1 Traffic Measurement_RG20

GSM/EDGE BSS, Rel. RG20(BSS), Operating Documentation, Issue 07

Reference

1 Traffic Measurement

DN9813827

Issue 13-5Approval Date 2011-09-30

Confidential

2 DN9813827Issue 13-5


Id:0900d8058087f108Confidential

The information in this document is subject to change without notice and describes only the product defined in the introduction of this documentation. This documentation is intended for the use of Nokia Siemens Networks customers only for the purposes of the agreement under which the document is submitted, and no part of it may be used, reproduced, modified or transmitted in any form or means without the prior written permission of Nokia Siemens Networks. The documentation has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using it. Nokia Siemens Networks welcomes customer comments as part of the process of continuous development and improvement of the documentation.

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DN9813827 3



Table of contentsThis document has 330 pages.

1 Summary of changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2 1 Traffic Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

3 Counters of Traffic Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313.1 001000 / SEIZURE ATTEMPTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313.2 001001 / SEIZURE ATTEMPTS WITH BUSY SDCCH . . . . . . . . . . . . . 313.3 001002 / TRANSACTIONS FAIL DUE TO BSS FAIL . . . . . . . . . . . . . . 323.4 001003 / TRANSACTIONS FAIL DUE TO RADIO FAIL . . . . . . . . . . . . 333.5 001004 / TRANSACTIONS FAIL DUE RADIO ON SOURCE CHANNEL

DURING HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333.6 001005 / TRANSACTIONS FAIL DUE RADIO ON TARGET CHANNEL343.7 001006 / SUCCESS SEIZURE FOR HO. . . . . . . . . . . . . . . . . . . . . . . . 353.8 001007 / SUCCESS SEIZURE FOR IMMEDIATE ASSIGNMENT . . . . 363.9 001008 / SUCCESS TCH SEIZURE FOR HO. . . . . . . . . . . . . . . . . . . . 363.10 001009 / SUCCESS TCH SEIZURE FOR NORMAL ASSIGNMENT . . 373.11 001010 / TCH REQUEST SUCCESS AND UNSUCCESS . . . . . . . . . . 373.12 001011 / TCH REQUEST REJECTED DUE TO LACK . . . . . . . . . . . . . 383.13 001012 / TRANSACTIONS ENDED DUE TO BSS PROBLEM. . . . . . . 393.14 001013 / TRANSACTIONS ENDED DUE RADIO FAIL. . . . . . . . . . . . . 403.15 001014 / TRANSACTIONS ENDED DUE SOURCE CHANNEL FAIL DUR-

ING HO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413.16 001015 / TRANSACTIONS ENDED DUE TARGET CHANNEL FAIL . . 423.17 001016 / CALL ATTEMPTS IN THE QUEUE . . . . . . . . . . . . . . . . . . . . 433.18 001017 / HANDOVER ATTEMPTS IN THE QUEUE. . . . . . . . . . . . . . . 433.19 001018 / AVE QUEUE LENGTH FOR CHANNEL SEIZURE REQUEST .

443.20 001019 / QUEUE DENOMINATOR 1 . . . . . . . . . . . . . . . . . . . . . . . . . . 443.21 001020 / AVE QUEUE TIME OF CALL ATTEMPTS . . . . . . . . . . . . . . . 453.22 001021 / QUEUE DENOMINATOR 2 . . . . . . . . . . . . . . . . . . . . . . . . . . 463.23 001022 / AVE QUEUE TIME OF HO ATTEMPTS. . . . . . . . . . . . . . . . . 463.24 001023 / QUEUE DENOMINATOR 3 . . . . . . . . . . . . . . . . . . . . . . . . . . 473.25 001024 / NOT SERVED QUEUED CALL ATTEMPTS . . . . . . . . . . . . . 473.26 001025 / NOT SERVED QUEUED HO ATTEMPTS . . . . . . . . . . . . . . . 483.27 001026 / TCH CALL REQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 493.28 001027 / SDCCH ACT FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503.29 001028 / TCH ACT FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 503.30 001029 / TCH TR FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 513.31 001030 / TCH TR FAIL SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 523.32 001031 / TCH TR FAIL TARGET. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 523.33 001032 / NOT RELEVANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533.34 001033 / SDCCH ABIS PROBL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 533.35 001034 / SDCCH A IF PROBL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543.36 001035 / SDCCH LAPD FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 553.37 001036 / SDCCH BTS FAIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

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3.38 001037 / SDCCH USER ACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 563.39 001038 / SDCCH BCSU RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 573.40 001039 / SDCCH NETW ACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 583.41 001040 / TRUNK RES INVOC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 583.42 001041 / SUCC TRUNK RES INVOC. . . . . . . . . . . . . . . . . . . . . . . . . . . 593.43 001042 / TRUNK RES INVOC RES REFUSED . . . . . . . . . . . . . . . . . . . 593.44 001043 / TCH REQ FACCH CALLSET . . . . . . . . . . . . . . . . . . . . . . . . . 603.45 001044 / TCH SEIZ FACCH CALL SET . . . . . . . . . . . . . . . . . . . . . . . . . 613.46 001045 / TCH ABIS PROBL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 613.47 001046 / TCH LAPD FAIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 623.48 001047 / TCH BTS FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.49 001048 / TCH USER ACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633.50 001049 / TCH BCSU RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 643.51 001050 / TCH NETW ACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 643.52 001051 / TCH A IF PROBL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 653.53 001052 / TRHO REQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 663.54 001053 / TRHO ENQUIRIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 663.55 001054 / FOR REL ASSIGN REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . . 673.56 001055 / FOR HO ASSIGN REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . . . 683.57 001056 / QUE ALL ASSIGN REQ ATT. . . . . . . . . . . . . . . . . . . . . . . . . . 683.58 001057 / QUE NALL ASSIGN REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . 693.59 001058 / FOR REL ASSIGN REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . 703.60 001059 / FOR HO ASSIGN REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . 703.61 001060 / QUE ALL ASSIGN REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . 713.62 001061 / QUE NALL ASSIGN REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . 723.63 001062 / FOR REL HO REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733.64 001063 / FOR HO HO REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733.65 001064 / QUE ALL HO REQ ATT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 743.66 001065 / QUE NALL HO REQ ATT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 753.67 001066 / FOR REL HO REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 753.68 001067 / FOR HO HO REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 763.69 001068 / QUE ALL HO REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 773.70 001069 / QUE NALL HO REQ FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 783.71 001070 / FORCED RELEASES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 783.72 001071 / FORCED HANDOVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 793.73 001072 / SDCCH ACT FAIL CALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 793.74 001073 / NOT RELEVANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 803.75 001074 / SDCCH ACT FAIL TARGET . . . . . . . . . . . . . . . . . . . . . . . . . . 803.76 001075 / SDCCH ABIS FAIL CALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 813.77 001076 / SDCCH ABIS FAIL SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . 823.78 001077 / SDCCH ABIS FAIL TARGET. . . . . . . . . . . . . . . . . . . . . . . . . . 833.79 001078 / SDCCH A IF FAIL CALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 843.80 001079 / SDCCH A IF FAIL SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . 843.81 001080 / SDCCH A IF FAIL TARGET . . . . . . . . . . . . . . . . . . . . . . . . . . 853.82 001081 / TCH ACT FAIL CALL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 863.83 001082 / NOT RELEVANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 863.84 001083 / TCH ACT FAIL TARGET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

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3.85 001084 / TCH ABIS FAIL CALL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 873.86 001085 / TCH ABIS FAIL SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 883.87 001086 / TCH ABIS FAIL NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 893.88 001087 / TCH A IF FAIL CALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903.89 001088 / TCH A IF FAIL SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 903.90 001089 / TCH A IF FAIL NEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 913.91 001090 / TCH REQ UND OVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 923.92 001091 / TCH SEIZ UND OVER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 933.93 001092 / TCH REJ REQ UND OVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 933.94 001093 / SUCC MOC TEST CALL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 943.95 001094 / FAIL MOC TEST CALL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 953.96 001095 / PRI SUBSCR TCH REQ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 953.97 001096 / PRI SUBSCR SUCC TCH SEIZ . . . . . . . . . . . . . . . . . . . . . . . 963.98 001097 / NO PRI SUBSCR REFUSED TCH REQ . . . . . . . . . . . . . . . . 963.99 001098 / TCH SEIZ ATT DUE SDCCH CON . . . . . . . . . . . . . . . . . . . . 973.100 001099 / TCH SEIZ DUE SDCCH CON . . . . . . . . . . . . . . . . . . . . . . . . 983.101 001100 / TRUNK TCH REJECTED FR REQ. . . . . . . . . . . . . . . . . . . . . 993.102 001101 / TRUNK TCH REJECTED HR REQ . . . . . . . . . . . . . . . . . . . . 993.103 001102 / FULL TCH REQ SUCC UNSUCC . . . . . . . . . . . . . . . . . . . . 1003.104 001103 / HALF TCH REQ SUCC UNSUCC . . . . . . . . . . . . . . . . . . . . 1013.105 001104 / TCH REQ FULL PREFERRED. . . . . . . . . . . . . . . . . . . . . . . 1033.106 001105 / TCH REQ HALF PREFERRED . . . . . . . . . . . . . . . . . . . . . . 1043.107 001106 / SUCC FULL TCH SEIZ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1053.108 001107 / SUCC HALF TCH SEIZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1063.109 001108 / FULL TCH SEIZ SPEECH VER 1. . . . . . . . . . . . . . . . . . . . . 1063.110 001109 / FULL TCH SEIZ SPEECH VER 2. . . . . . . . . . . . . . . . . . . . . 1073.111 001110 / FULL TCH SEIZ SPEECH VER 3. . . . . . . . . . . . . . . . . . . . . 1083.112 001111 / HALF TCH SEIZ SPEECH VER 1 . . . . . . . . . . . . . . . . . . . . 1103.113 001112 / HALF TCH SEIZ SPEECH VER 2 . . . . . . . . . . . . . . . . . . . . 1113.114 001113 / HALF TCH SEIZ SPEECH VER 3 . . . . . . . . . . . . . . . . . . . . 1113.115 001114 / FULL TCH SEIZ NORM ASSIGNMENT. . . . . . . . . . . . . . . . 1123.116 001115 / HALF TCH SEIZ NORM ASSIGNMENT. . . . . . . . . . . . . . . . 1133.117 001116 / FULL TCH SEIZ INT HO CH RATE . . . . . . . . . . . . . . . . . . . 1143.118 001117 / HALF TCH SEIZ INT HO CH RATE . . . . . . . . . . . . . . . . . . . 1153.119 001118 / REJ TCH REQ DUE LACK FR . . . . . . . . . . . . . . . . . . . . . . . 1153.120 001119 / REJ TCH REQ DUE LACK HR. . . . . . . . . . . . . . . . . . . . . . . 1163.121 001120 / FULL TCH REJ DUE HR TRAF . . . . . . . . . . . . . . . . . . . . . . 1173.122 001121 / HALF TCH REJ DUE FR TRAF . . . . . . . . . . . . . . . . . . . . . . 1183.123 001122 / TCH REJ DUE REQ CH A IF CRC. . . . . . . . . . . . . . . . . . . . 1193.124 001123 / FULL TCH REQ FACCH CALL. . . . . . . . . . . . . . . . . . . . . . . 1203.125 001124 / TCH FACCH CALL CH RATE NOT DEF . . . . . . . . . . . . . . . 1213.126 001125 / SUCC FULL TCH SEIZ FACCH CALL . . . . . . . . . . . . . . . . . 1223.127 001126 / SUCC HALF TCH SEIZ FACCH CALL. . . . . . . . . . . . . . . . . 1223.128 001127 / ENDED DUE TRANSC FR RATE 1 . . . . . . . . . . . . . . . . . . . 1233.129 001128 / ENDED DUE TRANSC FR RATE 2 . . . . . . . . . . . . . . . . . . . 1233.130 001129 / ENDED DUE TRANSC FR RATE 3 . . . . . . . . . . . . . . . . . . . 1243.131 001130 / ENDED DUE TRANSC HR RATE 1 . . . . . . . . . . . . . . . . . . . 125

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3.132 001131 / ENDED DUE TRANSC HR RATE 2 . . . . . . . . . . . . . . . . . . . 1253.133 001132 / ENDED DUE TRANSC HR RATE 3 . . . . . . . . . . . . . . . . . . . 1263.134 001133 / FULL TCH TR FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1273.135 001134 / HALF TCH TR FAIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1283.136 001135 / SDCCH SEIZ ATT FOR MOC . . . . . . . . . . . . . . . . . . . . . . . . 1283.137 001136 / SDCCH SEIZ ATT FOR MTC . . . . . . . . . . . . . . . . . . . . . . . . 1293.138 001137 / TCH SEIZ ATT FOR MOC. . . . . . . . . . . . . . . . . . . . . . . . . . . 1303.139 001138 / TCH SEIZ ATT FOR MTC . . . . . . . . . . . . . . . . . . . . . . . . . . . 1313.140 001139 / TCH REL BECAUSE OF RADIO FAIL . . . . . . . . . . . . . . . . . 1333.141 001140 / TCH REL DUE TO BSS FAIL . . . . . . . . . . . . . . . . . . . . . . . . 1333.142 001141 / TCH SEIZ FAILS DUE TO CONG . . . . . . . . . . . . . . . . . . . . . 1343.143 001142 / QUEUED URGENT HANDOVER ATTEMPTS . . . . . . . . . . . 1353.144 001143 / AVE QUE TIME OF URGENT HO ATTEMPTS. . . . . . . . . . . 1363.145 001144 / QUE DENOMINATOR 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1363.146 001145 / AVE QUE TIME OF NON URGENT HO ATTEMPTS . . . . . . 1373.147 001146 / QUE DENOMINATOR 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1383.148 001147 / QUEUED URG HO ATTS NOT SERVED . . . . . . . . . . . . . . . 1383.149 001148 / MS SUCC TCH SEIZURE FOR ASSIGNMENT COMPLETE 1393.150 001149 / CALLS ENDED BY USER DURING DADL/B SETUP . . . . . . 1403.151 001150 / SUCC TCH SEIZ WHEN GOOD QUAL IN ADJACENTS . . . 1403.152 001151 / TCH REQ REJ DUE TO BAD QUALITY IN ADJACENT . . . . 1413.153 001152 / SUCC TCH SEIZ WHEN QUAL BETW GOOD AND BAD IN AD-

JACENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1413.154 001153 / TCH REQ REJ WHEN QUAL BETW GOOD AND BAD IN ADJA-

CENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1423.155 001154 / DYNAMIC SDCCH RECONFIGURATION ATTEMPT. . . . . . 1423.156 001155 / UNSUCC IMM ASS SDCCH ATTEMPT . . . . . . . . . . . . . . . . 1433.157 001156 / HSCSD TCH REQ WITH 14,4 . . . . . . . . . . . . . . . . . . . . . . . . 1443.158 001157 / HSCSD SUCC TCH SEIZ WITH 14,4 . . . . . . . . . . . . . . . . . . 1453.159 001158 / HSCSD TRANSP TCH REQ . . . . . . . . . . . . . . . . . . . . . . . . . 1453.160 001159 / HSCSD SUCC TRANSP TCH SEIZ . . . . . . . . . . . . . . . . . . . 1463.161 001160 / HSCSD REQ FOR CALL SETUP . . . . . . . . . . . . . . . . . . . . . 1473.162 001161 / HSCSD TCH REQ FOR HO . . . . . . . . . . . . . . . . . . . . . . . . . 1473.163 001162 / HSCSD SUCC TCH SEIZ FOR CALL SETUP . . . . . . . . . . . 1483.164 001163 / HSCSD SUCC TCH SEIZ FOR HO. . . . . . . . . . . . . . . . . . . . 1483.165 001164 / HSCSD CON REL DUE TO FAIL . . . . . . . . . . . . . . . . . . . . . 1493.166 001165 / SUCCESS TCH SEIZURE FOR DIRECT ACCESS . . . . . . . 1503.167 001166 / TCH REQUEST FOR DIRECT ACCESS REJECTED DUE TO

LACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1503.168 001167 / TCH REQUEST FOR A BSC CONTROLLED TRHO PROCE-

DURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1513.169 001168 / SUCC TCH SEIZ FOR A BSC CONTROLLED TRHO . . . . . 1523.170 001169 / REJ TCH SEIZ FOR A BSC CONTROLLED TRHO DUE LACK

OF RESOURCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1523.171 001170 / SUCCESSFUL TCH SEIZURES FOR DADLB HO . . . . . . . . 1533.172 001171 / TCH REQUEST IN DADLB HO REJECTED . . . . . . . . . . . . . 1533.173 001172 / DADLB START DUE TO EXCEEDED LOAD . . . . . . . . . . . . 1543.174 001173 / REMOVAL FROM QUE DUE TO DR . . . . . . . . . . . . . . . . . . 155

DN9813827 7



3.175 001174 / GPRS TER UPGRD REQ. . . . . . . . . . . . . . . . . . . . . . . . . . . 1553.176 001175 / INCOMPL SERV GPRS TER UPGR REQ . . . . . . . . . . . . . . 1563.177 001176 / GPRS TER UG REJ DUE CSW TR . . . . . . . . . . . . . . . . . . . 1573.178 001177 / GPRS TER UG REJ DUE LACK PSW RES. . . . . . . . . . . . . 1573.179 001178 / GPRS TER UG REJ DUE LACK PCU CAP . . . . . . . . . . . . . 1583.180 001179 / GPRS TER DG DUE INC IN CSW TR . . . . . . . . . . . . . . . . . 1593.181 001180 / GPRS TER UG DUE DEC CSW TR. . . . . . . . . . . . . . . . . . . 1593.182 001181 / GPRS TER DOWNGRADE REQ . . . . . . . . . . . . . . . . . . . . . 1603.183 001182 / FULL TCH SEIZ INTRA AMR HO. . . . . . . . . . . . . . . . . . . . . 1603.184 001183 / HALF TCH SEIZ INTRA AMR HO . . . . . . . . . . . . . . . . . . . . 1613.185 001184 / TCH CALL REQ FOR AMR . . . . . . . . . . . . . . . . . . . . . . . . . 1623.186 001185 / SUCCESSFUL AMR CODEC SET DOWNGRADES . . . . . . 1623.187 001186 / UNSUCCESSFUL AMR CODEC SET DOWNGRADES . . . 1633.188 001187 / SUCCESSFUL AMR CODEC SET UPGRADES . . . . . . . . . 1633.189 001188 / UNSUCCESSFUL AMR CODEC SET UPGRADES . . . . . . 1643.190 001189 / TCH REQ FOR 96 DAT CALL . . . . . . . . . . . . . . . . . . . . . . . 1653.191 001190 / SUCC TCH SEIZ FOR 96 DAT CALL. . . . . . . . . . . . . . . . . . 1653.192 001191 / SDCCH DROP CALL AND HO. . . . . . . . . . . . . . . . . . . . . . . 1663.193 001192 / TCH REQUESTS FOR CALL ATTEMPT . . . . . . . . . . . . . . . 1663.194 001193 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT . . . 1673.195 001194 / TCH ACCESS REJECTED DUE LOW RX. . . . . . . . . . . . . . 1673.196 001195 / MSC O HO CMD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1683.197 001196 / BSC O HO CMD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1683.198 001197 / BTS HO ASSGN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1693.199 001198 / TCH REL DUE TO RADIO FAIL PH 9-11. . . . . . . . . . . . . . . 1693.200 001199 / TCH REL DUE TO BSS FAIL PH 2-3 . . . . . . . . . . . . . . . . . . 1703.201 001200 / TCH REL DUE TO BSS FAIL PH 9-11 . . . . . . . . . . . . . . . . . 1703.202 001201 / SDCCH FAIL PH 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1713.203 001202 / DROP AFTER TCH ASSIGN . . . . . . . . . . . . . . . . . . . . . . . . 1713.204 001203 / ERROR IND DURING LU. . . . . . . . . . . . . . . . . . . . . . . . . . . 1723.205 001204 / DROP TCH ASSCOMPL TO RFCH REL . . . . . . . . . . . . . . . 1723.206 001205 / TCH REL DUE RAD FAIL PH 2-3. . . . . . . . . . . . . . . . . . . . . 1743.207 001206 / TCH REL DUE RAD FAIL PH 12-14. . . . . . . . . . . . . . . . . . . 1743.208 001207 / TCH REL DUE BSS FAIL PH 12-14 . . . . . . . . . . . . . . . . . . . 1753.209 001208 / A IF CRC MISMATCH CALL SETUP . . . . . . . . . . . . . . . . . . 1753.210 001209 / GPRS TER DG REJ DUE STREAMING . . . . . . . . . . . . . . . 1763.211 001210 / GPRS TER DG REQ WHEN EQOS ON. . . . . . . . . . . . . . . . 1763.212 001211 / TCH REL BSC BSC CONFLICT CALL. . . . . . . . . . . . . . . . . 1773.213 001212 / TCH REL BSC BSC CONFLICT TARG . . . . . . . . . . . . . . . . 1773.214 001213 / GPRS TER UG REQ FROM CSW . . . . . . . . . . . . . . . . . . . . 1783.215 001214 / GPRS TER UG FROM CSW PARTIAL . . . . . . . . . . . . . . . . 1793.216 001215 / GPRS TER UG FROM CSW FAILED. . . . . . . . . . . . . . . . . . 1793.217 001216 / TCH REQ REJ DUE TO LACK OF RES PER BCSU . . . . . . 1803.218 001217 / INTERNAL TO EXTERNAL HO . . . . . . . . . . . . . . . . . . . . . . 1813.219 001218 / NOT CHANGED INTERNAL HO . . . . . . . . . . . . . . . . . . . . . 1813.220 001219 / IURG RELOCATION RESOURCE REQUEST. . . . . . . . . . . 182

8 DN9813827



3.221 001220 / IURG RELOCATION RESOURCE ALLOCATION SUCCESSFUL182

3.222 001221 / TCH TR FAILURE FOR IURG HO WITHOUT A INTERFACE . .183

3.223 001222 / IURG RELOCATION RESOURCE RELEASE. . . . . . . . . . . . 1833.224 001223 / SPARE001223. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1843.225 001224 / SPARE001224. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1843.226 001225 / SUCCESSFUL SDCCH ESTABLISHMENT LU EXCLUDED 1853.227 001226 / SDCCH DROP LU EXCLUDED. . . . . . . . . . . . . . . . . . . . . . . 1853.228 001227 / SUCCESSFUL SDCCH LU ESTABLISHMENT . . . . . . . . . . 1863.229 001228 / SDCCH LU DROP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1863.230 001229 / TCH ASSIGMENT FAILURE MS RETURN SDCCH . . . . . . . 1873.231 001230 / SDCCH DROP OTHER REASON . . . . . . . . . . . . . . . . . . . . . 1873.232 001231 / SDCCH LU ATTEMPTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1883.233 001232 / SDCCH LU ATTEMPTS FAIL . . . . . . . . . . . . . . . . . . . . . . . . 1883.234 001233 / DROPS AFTER DTM CS TCH ASSIGNMENT . . . . . . . . . . . 1893.235 001234 / DTM CS TCH DROPS BETWEEN ASSCOMPL AND RFCH REL

ACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1903.236 001235 / FORCED RELEASE AFTER FORCED HO. . . . . . . . . . . . . . 1903.237 001236 / CLASS 2 SUBSCRIBER FORCED RELEASE . . . . . . . . . . . 1913.238 001237 / TCH REQUESTS FOR CALL ATTEMPT CLASS 1. . . . . . . . 1913.239 001238 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT CLASS 1

1923.240 001239 / TCH REQUESTS FOR CALL ATTEMPT CLASS 2. . . . . . . . 1923.241 001240 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT CLASS 2

1933.242 001241 / TCH REQUESTS FOR CALL ATTEMPT CLASS 3. . . . . . . . 1943.243 001242 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT CLASS 3

1943.244 001243 / DR TRAU DOWNGRADE ATTEMPTED IN AMR HO . . . . . . 1953.245 001244 / DR TRAU DOWNGRADE ATTEMPT FAILED . . . . . . . . . . . 1953.246 001245 / DR TRAU UPGRADE ATTEMPTED IN AMR HO . . . . . . . . . 1963.247 001246 / DR TRAU UPGRADE ATTEMPT FAILED. . . . . . . . . . . . . . . 1963.248 001247 / SEIZURE IN AMR FR TO HR HO . . . . . . . . . . . . . . . . . . . . . 1973.249 001248 / SEIZURE IN AMR HR TO FR HO . . . . . . . . . . . . . . . . . . . . . 1973.250 001249 / INTERNAL AMR HO TO EXTERNAL . . . . . . . . . . . . . . . . . . 1983.251 001250 / SUCCESSFUL LRTCH SEIZURES. . . . . . . . . . . . . . . . . . . . 1983.252 001251 / TIME OF WB-AMR CALLS . . . . . . . . . . . . . . . . . . . . . . . . . . 1993.253 001252 / TCH REQUESTS FOR WB-AMR . . . . . . . . . . . . . . . . . . . . . 2003.254 001253 / TCH SEIZURES FOR WB-AMR . . . . . . . . . . . . . . . . . . . . . . 2003.255 001254 / TCH ENDED DUE TRANSCODER FAILURE CODEC 5 . . . 2013.256 001255 / CODEC TYPE CHANGE FROM AMR TO WB-AMR SUCCESS-

FUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2023.257 001256 / CODEC TYPE CHANGE FROM WB-AMR TO AMR SUCCESS-

FUL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2023.258 001257 / GPRS TERRITORY UPGRADE REQUEST DUE DLDC . . . 2033.259 001258 / GPRS TERRITORY UPGRADE DUE DLDC REJECT . . . . . 2033.260 001259 / TCH REQUEST WITHIN DL RX LEVEL WINDOW. . . . . . . . 204

DN9813827 9



3.261 001260 / TCH SEIZURE IN BCCH DUE TO DL RX LEVEL . . . . . . . . 2043.262 001261 / TCH REQUEST OUT OF DL RX LEVEL WINDOW . . . . . . . 2053.263 001262 / TCH SEIZURE IN NON-BCCH DUE TO DL RX LEVEL. . . . 2063.264 001263 / DHR MULTIPLEXING ATTEMPTS. . . . . . . . . . . . . . . . . . . . 2063.265 001264 / DHR MULTIPLEXING FAILURE DUE TO TCH RESOURCE 2073.266 001265 / CSDAP RESOURCE ALLOCATION ATTEMPTS FOR DHR 2073.267 001266 / DHR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

2083.268 001267 / DHR MULTIPLEXING FAILURE DUE TO OTHER REASON 2083.269 001268 / TCH REQ REJ DUE ABIS CONG . . . . . . . . . . . . . . . . . . . . 2093.270 001269 / CALL SETUP REJ DUE ABIS CONG. . . . . . . . . . . . . . . . . . 2103.271 001270 / GPRS TERR UG REJ DUE ABIS. . . . . . . . . . . . . . . . . . . . . 2103.272 001271 / SPARE001271 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2113.273 001272 / TCH REQUEST REJECT DUE TO ETP OVERLOAD . . . . . 2113.274 001273 / CALL SETUP REJECT DUE TO ETP OVERLOAD . . . . . . . 2123.275 001274 / MO LS CALL SUCCESSFUL . . . . . . . . . . . . . . . . . . . . . . . . 2123.276 001275 / MT LS CALL SUCCESSFUL . . . . . . . . . . . . . . . . . . . . . . . . 2133.277 001276 / LS ESTABLISHMENT UNSUCCESSFUL DUE TO CODEC 2143.278 001277 / LS RELEASE DUE TO INTER HO OUTSIDE LS AREA . . . 2143.279 001278 / LS RELEASE DUE TO EXTERNAL HO. . . . . . . . . . . . . . . . 2153.280 001279 / LS RELEASE DUE TO SUPPLEM SERVICE ESTABLISHMENT

2153.281 001280 / SPARE001280 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2163.282 001281 / SPARE001281 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2163.283 001282 / SPARE001282 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2173.284 001283 / SPARE001283 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2173.285 001284 / SPARE001284 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2173.286 001285 / SPARE001285 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2183.287 001286 / SPARE001286 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2183.288 001287 / SPARE001287 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2193.289 001288 / DFR MULTIPLEXING ATTEMPTS IN 8K TRAU MODE . . . 2193.290 001289 / TRAU DOWNGRADE ATTEMPTED IN DFR MULTIPLEXING .

2203.291 001290 / TRAU DOWNGRADE FAILED IN DFR MULTIPLEXING. . . 2203.292 001291 / TRAU UPGRADE ATTEMPTED IN DFR DEMULTIPLEXING . .

2213.293 001292 / TRAU UPGRADE FAILED IN DFR DEMULTIPLEXING . . . 2223.294 001293 / DFR MULTIPLEXING ATTEMPTS. . . . . . . . . . . . . . . . . . . . 2223.295 001294 / DFR MULTIPLEXING FAILURE DUE TO TCH RESOURCE 2233.296 001295 / CSDAP RESOURCE ALLOCATION ATTEMPTS FOR DFR 2233.297 001296 / DFR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

2243.298 001297 / DFR MULTIPLEXING FAILURE DUE TO OTHER REASON 2243.299 001298 / TCH REQUEST REJECTED DUE TO TX POWER . . . . . . . 2253.300 001299 / POWER BALANCING HANDOVER REQUESTED . . . . . . . 2263.301 001300 / POWER BALANCING HO REQUEST REJECTED . . . . . . . 2263.302 001301 / GPRS TER UG REJ DUE LACK TX POWER . . . . . . . . . . . 227

10 DN9813827



4 Signalling charts of Traffic Measurement . . . . . . . . . . . . . . . . . . . . . . . 228

5 Signalling charts of Dual Transfer Mode. . . . . . . . . . . . . . . . . . . . . . . . 310

DN9813827 11



List of figuresFigure 1 Basic call without counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228Figure 2 Basic call with counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229Figure 3 Basic call with priority subscriber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230Figure 4 FACCH call setup due to SDCCH congestion without counters . . . . . 231Figure 5 FACCH call setup due to SDCCH congestion with counters . . . . . . . . 232Figure 6 FACCH call setup due to SDCCH congestion, no free TCH channel. Op-

tional software directed retry is not activated. . . . . . . . . . . . . . . . . . . . 233Figure 7 Normal release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234Figure 8 Basic call, no free TCH and queuing or directed retry is not allowed . 235Figure 9 Successful TCH queuing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236Figure 10 Basic call, no free TCHs, unsuccessful queuing and directed retry not acti-

vated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 237Figure 11 TCH assignment failure due to MSC's inability to switch circuit pool. . 238Figure 12 Unsuccessful TCH activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239Figure 13 Unsuccessful TCH activation, timer expires while waiting for

CHANNEL_ACTIVATION_ACK message . . . . . . . . . . . . . . . . . . . . . . 240Figure 14 TCH assignment failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241Figure 15 TCH assignment failure, MSC sends CLEAR_COMMAND message . 242Figure 16 CONNECTION_FAILURE message with cause transcoder_failure during a

call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243Figure 17 TRX or TSL is blocked with different causes during a call. . . . . . . . . . 244Figure 18 SDCCH congestion, FACCH call setup is not activated . . . . . . . . . . . 245Figure 19 Unsuccessful SDCCH activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246Figure 20 Unsuccessful SDCCH activation, timer expires while waiting for

CHANNEL_ACTIVATION_ACK message . . . . . . . . . . . . . . . . . . . . . . 247Figure 21 Connection failure during SDCCH assignment . . . . . . . . . . . . . . . . . . 248Figure 22 SDCCH assignment failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249Figure 23 Unsuccessful SDCCH activation, timer expires while waiting for

PHYSICAL_CONTEXT_CONFIRM message . . . . . . . . . . . . . . . . . . . 250Figure 24 TRX/TSL is blocked with different causes during an SDCCH channel acti-

vation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251Figure 25 Successful trunk reservation. Counters updated: 001040, 001041 and ba-

sic call counters, see Figure 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252Figure 26 Unsuccessful trunk reservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253Figure 27 Successful internal intra-cell handover. Counters 001090 and 001091 are

updated only with underlay overlay handover.. . . . . . . . . . . . . . . . . . . 254Figure 28 Internal intra-cell handover, successful TCH queuing . . . . . . . . . . . . . 255Figure 29 Unsuccessful internal intra-cell handover, timer expires while waiting for

CHANNEL_ACTIVATION_ACK message . . . . . . . . . . . . . . . . . . . . . . 256Figure 30 Unsuccessful internal intra-cell handover, CONNECTION_FAILURE mes-

sage with cause remote_transcoder_failure comes to the target channel. 257

Figure 31 Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258

Figure 32 Unsuccessful underlay overlay internal intra-cell handover, queuing not al-lowed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259

Figure 33 Internal intra-cell handover, unsuccessful TCH queuing . . . . . . . . . . . 260

12 DN9813827



Figure 34 Internal directed retry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261Figure 35 Successful internal inter-cell handover . . . . . . . . . . . . . . . . . . . . . . . . . 262Figure 36 Unsuccessful internal inter-cell handover . . . . . . . . . . . . . . . . . . . . . . . 263Figure 37 Successful external handover, target . . . . . . . . . . . . . . . . . . . . . . . . . . 264Figure 38 Successful external handover, source . . . . . . . . . . . . . . . . . . . . . . . . . 265Figure 39 Unsuccessful external handover, source BSC, timer expires while waiting

for CLEAR_COMMAND message . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266Figure 40 Unsuccessful external handover, MS sends a handover failure . . . . . . 267Figure 41 Successful traffic reason handover, source . . . . . . . . . . . . . . . . . . . . . 268Figure 42 Successful SDCCH internal intra-cell handover . . . . . . . . . . . . . . . . . . 269Figure 43 Unsuccessful SDCCH internal intra-cell handover, timer expires while wait-

ing for CHANNEL_ACTIVATION_ACK message . . . . . . . . . . . . . . . . . 270Figure 44 Unsuccessful SDCCH internal intra-cell handover, unsuccessful channel

activation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271Figure 45 Unsuccessful SDCCH internal intra-cell handover,

CONNECTION_FAILURE message comes to the target channel during handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272

Figure 46 Successful SDCCH internal inter-cell handover . . . . . . . . . . . . . . . . . . 273Figure 47 Unsuccessful SDCCH internal inter-cell handover, BTS sends

CONNECTION_FAILURE message . . . . . . . . . . . . . . . . . . . . . . . . . . . 274Figure 48 Successful SDCCH external handover target. . . . . . . . . . . . . . . . . . . . 274Figure 49 Successful SDCCH external handover source. No counters updating. 275Figure 50 Unsuccessful SDCCH external handover, timer expires while waiting for

CLEAR_COMMAND message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276Figure 51 Successful forced release. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 277Figure 52 Unsuccessful forced release. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278Figure 53 Unsuccessful forced release with external handover . . . . . . . . . . . . . . 279Figure 54 Successful forced handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280Figure 55 Unsuccessful forced handover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281Figure 56 Unsuccessful forced handover with external handover . . . . . . . . . . . . 282Figure 57 Reconfiguration from TCH to SDCCH . . . . . . . . . . . . . . . . . . . . . . . . . 283Figure 58 Normal call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283Figure 59 Mobile originated HSCSD call setup. . . . . . . . . . . . . . . . . . . . . . . . . . . 284Figure 60 Successful internal inter-cell handover for HSCSD, target cell allocations

and activations for three channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285Figure 61 A CONNECTION_FAILURE message which comes during an HSCSD . .

286Figure 62 Internal intra-cell direct access from a regular DCCH to the super-reuse

TRX. Optional software direct access to super-reuse TRX in IUO activated.287

Figure 63 Unsuccessful internal intra-cell direct access from regular DCCH to the su-per-reuse TRX due to lack of resources. Optional software direct access to super-reuse TRX in IUO activated. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

Figure 64 Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE mes-sage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289

Figure 65 Average counter updating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290Figure 66 Successful handover due to DADL/B . . . . . . . . . . . . . . . . . . . . . . . . . . 290Figure 67 Unsuccessful DADL/B handover due to lack of resources . . . . . . . . . . 291Figure 68 Successful BSC controlled TRHO . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

DN9813827 13



Figure 69 Unsuccessful BSC controlled TRHO . . . . . . . . . . . . . . . . . . . . . . . . . . 292Figure 70 Dropped call between ASSIGNMENT COMPLETE and DISCONNECT. .

293Figure 71 Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RE-

LEASE ACK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294Figure 72 Circuit pool switching during call setup, chart 1/2 . . . . . . . . . . . . . . . . 295Figure 73 Circuit pool switching during call setup, chart 2/2 . . . . . . . . . . . . . . . . 296Figure 74 AMR packing or unpacking handover . . . . . . . . . . . . . . . . . . . . . . . . . 297Figure 75 Successful handover type reselection from an internal inter-cell TCH to

TCH handover to an external handover due to switching the circuit pool . 298

Figure 76 Internal inter-cell handover change to external handover due to circuit pool switching, target-cell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Figure 77 Internal intra-cell handover change to external due to circuit pool switching, source side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300

Figure 78 Internal intra-cell handover change to external due to circuit pool switching, target side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301

Figure 79 Circuit pool switch during inter-system handover, target-BSC. . . . . . . 302Figure 80 Circuit pool switch during external handover, target-BSC . . . . . . . . . . 303Figure 81 BSS Internal Handover with MSC Support - Local Handover . . . . . . . 304Figure 82 BSS Internal Handover with MSC Support - Distant Handover . . . . . . 305Figure 83 Intra BSC HO; interface type change from AoIP to AoTDM; TC in MGW .

306Figure 84 TCH Drop Counters 1/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307Figure 85 TCH Drop Counters 2/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308Figure 86 TCH Drop Counters 3/3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309Figure 87 MO DTM call establishment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310Figure 88 MT DTM call establishment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311Figure 89 DTM call reallocation; too high CS connection interference . . . . . . . . 312Figure 90 DTM call reallocation; inadequate PS connection quality . . . . . . . . . . 313Figure 91 DTM call; internal inter-cell handover; CS connection power budget . 314Figure 92 DTM call; internal inter-cell handover; lack of resources in the PS territory

315Figure 93 DTM call; external handover, source BSC. . . . . . . . . . . . . . . . . . . . . . 316Figure 94 DTM call; external handover, target BSC . . . . . . . . . . . . . . . . . . . . . . 317Figure 95 DTM call release initiated by the MS . . . . . . . . . . . . . . . . . . . . . . . . . . 318Figure 96 DTM call release; packet data transfer end . . . . . . . . . . . . . . . . . . . . . 319Figure 97 DTM REQUEST rejected when IMSI data not available . . . . . . . . . . . 320Figure 98 Unsuccessful MO DTM; activation of a CS TCH in the PS territory fails, tim-

er expires while waiting for CHANNEL ACTIVATION ACK . . . . . . . . . 321Figure 99 Unsuccessful MT DTM; activation of a CS TCH in the PS territory fails, tim-

er expires while waiting for CHANNEL ACTIVATION ACK . . . . . . . . . 322Figure 100 Unsuccessful MT DTM; DTM ASSIGNMENT FAILURE received . . . . 323Figure 101 Timer T3107 expires while waiting for ASSIGNMENT COMPLETE . . 324Figure 102 DTM call reallocation failure; DTM ASSIGNMENT FAILURE received 325Figure 103 DTM CS connection drops after ASSIGNMENT COMPLETE; CONNEC-

TION FAILURE received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326Figure 104 DTM CS connection drops after ASSIGNMENT COMPLETE; RELEASE

INDICATION not received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327

14 DN9813827



Figure 105 Unsuccessful DTM call reallocation; timer T3107 expires while waiting for ASSIGNMENT COMPLETE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328

Figure 106 DTM TBF assignment failure; UL RLC block not received . . . . . . . . . . 329Figure 107 DTM-capable MS paging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330

DN9813827 15



List of tablesTable 1 Measurement description of Traffic Measurement . . . . . . . . . . . . . . . . 19Table 2 SDCCH attempts counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 3 SDCCH success counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Table 4 SDCCH failure counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 5 TCH requests and attempts counters . . . . . . . . . . . . . . . . . . . . . . . . . . 20Table 6 TCH success counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Table 7 TCH failure counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Table 8 Other counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Table 9 GPRS counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Table 10 Spare counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

16 DN9813827



DN9813827 17

1 Traffic Measurement Summary of changes

Id:0900d8058087f15cConfidential

1 Summary of changesChanges between document issues are cumulative. Therefore, the latest document issue contains all changes made to previous issues.

Changes made between issues 13-5 and 13-4Three new signalling charts are added in section Signalling charts of Traffic Measure-ment: Figures 84-86.

In the section Signalling charts of Traffic Measurement, Figures 81-83 have been mod-ified.

New counters 001298, 001299, 001300 and 001301 related to feature BSS21507: Flexible MCPA TX Power Pooling have been added.

Spare counters 001191 and 001230 have been made official.

Changes made between issues 13-4 and 13-3The Description field has been modified for the counters 001226 and 001228.

Spare counters 001191 and 001230 are taken into use related to RG301618: SDCCH Drop Counters due to Clear Request.

Changes made between issues 13-3 and 13-2The counter 001112 has been changed to not in use.

The Unit field for the counter 001251 has been updated.

Spare counters 001225, 001226, 001227, 001228 and 001229 have been made official.

Changes made between issues 13-2 and 13-1The Description and Updated fields are modified for the counters 001274, 001275, 001276, 001277, 001278 and 001279 related to BSS21327: Local Switching for Packet Abis.

New counters 001288, 001289, 001290, 001291 and 001292 related to BSS21325: 8K TRAU for OSC AMR FR have been added.

New counters 001293, 001294, 001295, 001296 and 001297 related to BSS21534: OSC Full Rate with SAIC MS have been added.

The Description and Updated fields are modified for the counters 001038, 001049, and 001216 related to feature BSS21530 mcBSC.

The Updated field is modified for the counter 001155 related to feature BSS21530 mcBSC.

Changes made between issues 13-1 and 13-0The Description field is modified for the counter 001011.

In the section Signalling charts of Traffic Measurement, the counter 001192 is added in Figures 2, 3, 5, 6, 8, 9, 10, 11, 26, 34, 51, 52, 54, 55, 72, 73.

The Description and Updated fields are modified for the counter 001267.

Changes made between issues 13-0 and 12-1New counters 001257 and 001258 related to BSS21343: DLDC Territory Procedures have been added.

18 DN9813827


Id:0900d8058087f15cConfidential

Summary of changes

New counters 001259, 001260, 001261, 001262 related to BSS21222: Energy Opti-mised TCH Allocation have been added.

New counters 001274, 001275, 001276, 001277, 001278 and 001279 related to BSS21327: Local Switching For Packet Abis have been added.

New counters 001268, 001269, 001270, 001272 and 001273 related to BSS21454: Packet Abis over IP/Ethernet, BSS21440: Packet Abis over TDM have been added.

New counters 001263, 001264, 001265, 001266 and 001267 related to BSS21309: OSC Half Rate with SAIC MS have been added.

Spare counters 001219, 001220, 001221 and 001222 have made official due to BSS21528: ISHO acceleration via Iur-g.

Spare counters 001271, 001280, 001281, 001282, 001283, 001284, 001285, 001286 and 001287 are introduced.

Updated, Definition Updated, Domain level features and Related to feature fields are modified for the counters 001174 and 001175 related to BSS21343: DLDC Territory Procedures.

Three new signalling charts are added in section Signalling charts of Traffic Measure-ment: Figures 81-83.

Changes made between issues 12-1 and 12-0The Description and Updated fields are modified for the counters 001018, 001052, 001090, 001091 and 001092.

DN9813827 19

1 Traffic Measurement 1 Traffic Measurement

Id:0900d8058087628cConfidential

2 1 Traffic MeasurementThe BSC traffic measurement registers information related to the stand alone dedicated control channels (SDCCH) and traffic channels (TCH). The BSC traffic measurement counters are divided into different classes. There are counters regarding the number of attempts to seize TCHs and SDCCHs, successful calls, lengths of the queue, the reasons for Failures and GPRS territory counters. This measurement collects one set of results for each BTS. Signalling charts are drawn with the accuracy of message inter-face.

Measurement description

Measurement counters

• SDCCH attempts counters

• SDCCH success counters

• SDCCH failure counters

MeasurementMeasurement IDMeasurement abbreviation

Traffic Measurement1TRAFFIC

Product BSC

Product software release S1

Target name BTS + Coverage area

Table 1 Measurement description of Traffic Measurement

Counter Counter number

Seizure attempts 001000

SDCCH seizure attempts for MOC 001135

SDCCH seizure attempts for MTC 001136

Dynamic SDCCH reconfiguration attempt 001154

SDCCH LU attempts 001231

Table 2 SDCCH attempts counters


Success seizure for HO 001006

Success seizure for immediate assignment 001007

SUCCESSFUL SDCCH ESTABLISHMENT LU EXCLUDED

001225

SUCCESSFUL SDCCH LU ESTABLISHMENT 001227

Table 3 SDCCH success counters

20 DN9813827




• TCH requests and attempts counters


Seizure attempts with busy SDCCH 001001

Transactions failed due to BSS failure 001002

Transactions failed due to radio failure 001003

Transact. failed due radio on source channel during HO

001004

Transact. failed due radio on target channel during HO 001005

SDCCH activation failure 001027

SDCCH Abis problems 001033

SDCCH A interface problems 001034

SDCCH LAPD failure 001035

SDCCH BTS failure 001036

SDCCH user actions 001037

SDCCH BCSU reset 001038

SDCCH network actions 001039

SDCCH activation failure call 001072

SDCCH activation failure target 001074

SDCCH Abis failure call 001075

SDCCH Abis failure source 001076

SDCCH Abis failure target 001077

SDCCH A interface failure call 001078

SDCCH A interface failure source 001079

SDCCH A interface failure target 001080

Unsuccess immediate assignment SDCCH attempt 001155

SDCCH failures in phase 3 001201

Error indication messages during Location Update 001203

SDCCH DROP LU EXCLUDED 001226

SDCCH LU DROP 001228

SDCCH LU attempts fail 001232

Table 4 SDCCH failure counters


TCH request success and unsuccess 001010

Call attempts in the queue 001016

Handover attempts in the queue 001017

Table 5 TCH requests and attempts counters

DN9813827 21



TCH call request 001026

Trunk reservation invocations 001040

TCH requests FACCH call setup 001043

Traffic reason HO requests 001052

Traffic reason HO enquiries 001053

Forced release assign request attempts 001054

Forced HO assign request attempts 001055

Queuing allowed assign request attempts 001056

Queuing not allowed assign request attempts 001057

Forced release HO request attempts 001062

Forced HO HO request attempts 001063

Queuing allowed HO request attempts 001064

Queuing not allowed HO request attempts 001065

TCH requests underlay overlay 001090

TCH seizure underlay overlay 001091

Priority subscriber TCH requests 001095

TCH seizure attempt due SDCCH congestion 001098

Full TCH requests success unsuccess 001102

Half TCH requests success unsuccess 001103

TCH requests full preferred 001104

TCH requests half preferred 001105

Full TCH requests FACCH call 001123

TCH FACCH call channel rate not defined 001124

TCH seizure attempts for MOC 001137

TCH seizure attempts for MTC 001138

Queued urgent handover attempts 001142

TCH requests for 14.4k data calls 001156

HSCSD transparent TCH request 001158

HSCSD request for call setup 001160

HSCSD TCH request for HO 001161

TCH request for a BSC controlled TRHO procedure 001167

DADLB start due to exceeded load 001172

TCH requests for AMR call 001184

TCH requests for 9.6k data calls 001189

TCH requests for call attempt 001192

HO commands in outgoing MSC-controlled handover 001195


Table 5 TCH requests and attempts counters (Cont.)

22 DN9813827




• TCH success counters

HO commands in outgoing BSC–controlled handover 001196

Assignment commands in intra-BTS handover 001197

TCH requests for call attempt class 1 001237



TCH requests for WB-AMR 001252

TCH request within DL RX level window 001259

TCH request out of DL RX level window 001261


Table 5 TCH requests and attempts counters (Cont.)


Success TCH seizure for HO 001008

Success TCH seizure for normal assignment 001009

Success trunk reservation invocations 001041

TCH seizure FACCH call setup 001044

Forced releases 001070

Forced handovers 001071

Priority subscriber success TCH seizure 001096

TCH seizure due SDCCH congestion 001099

Success full TCH seizure 001106

Success half TCH seizure 001107

Full TCH seizure speech ver 1 001108



Half TCH seizure speech ver 1 001111



Full TCH seizure normal assignment 001114

Half TCH seizure normal assignment 001115

Full TCH seizure internal HO channel rate 001116

Half TCH seizure internal HO channel rate 001117

Success full TCH seizure FACCH call 001125

Success half TCH seizure FACCH call 001126

MS success TCH seizure for assignment complete 001148

Calls ended by user during DADL/B setup 001149

Table 6 TCH success counters

DN9813827 23



• TCH failure counters

Success TCH seizure when good quality in adjacents 001150

Succ TCH seiz when qual betw good and bad in adj 001152

HSCSD success TCH seizure with 14.4 001157

HSCSD success transparent TCH seizure 001159

HSCSD success TCH seizure for call setup 001162

HSCSD success TCH seizure for HO 001163

Success TCH seizure for direct access 001165

Succ TCH seiz for a controlled TRHO 001168

Successful TCH seizures for DADLB HO 001170

Removal from queue due to DR 001173

Successful FR TCH seizures with AMR codecs for HO 001182

Successful HR TCH seizures with AMR codecs for HO 001183

Successful TCH seizures for call attempt 001193

Successful TCH seizures for call attempt class1 001238



Seizure in AMR FR to HR HO 001247

Seizure in AMR HR to FR HO 001248

Successful LRTCH seizures 001250

TCH seizures for WB-AMR 001253

TCH seizure in BCCH due to DL RX level 001260

TCH seizure in non-BCCH due to DL RX level 001262


Table 6 TCH success counters (Cont.)


TCH request rejected due to lack 001011

Transactions ended due to BSS problem 001012

Transactions ended due to radio failure 001013

Transact. ended due source channel failure during HO 001014

Transact. ended due target channel failure during HO 001015

Not served queued call attempts 001024

Not served queued HO attempts 001025

TCH activation failure 001028

TCH transcoder failure 001029

TCH transcoder failure source 001030

Table 7 TCH failure counters

24 DN9813827




TCH transcoder failure target 001031

Trunk reservation invocations result refused 001042

TCH Abis problems 001045

TCH LAPD failure 001046

TCH BTS failure 001047

TCH user actions 001048

TCH BCSU reset 001049

TCH network actions 001050

TCH A interface problems 001051

Forced release assign request failed 001058

Forced HO assign request failed 001059

Queuing allowed assign request failed 001060

Queuing not allowed assign request failed 001061

Forced release HO request failed 001066

Forced HO HO request failed 001067

Queuing allowed HO request failed 001068

Queuing not allowed HO request failed 001069

TCH activation failure call 001081

TCH activation failure target 001083

TCH Abis failure call 001084

TCH Abis failure source 001085

TCH Abis failure new 001086

TCH A interface failure call 001087

TCH A interface failure source 001088

TCH A interface failure new 001089

TCH rejected requests underlay overlay 001092

Non-priority subscriber refused TCH requests 001097

Trunk TCH rejected FR requests 001100

Trunk TCH rejected HR requests 001101

Rejected TCH requests due lack FR 001118

Rejected TCH requests due lack HR 001119

Full TCH rejected requests due HR traffic 001120

Half TCH rejected requests due FR traffic 001121

TCH rejected due requested channel A interface circuit 001122

Ended due transcoder FR rate 1 001127



Table 7 TCH failure counters (Cont.)

DN9813827 25




Ended due transcoder HR rate 1 001130



Full TCH transaction failures 001133

Half TCH transaction failures 001134

TCH release due to radio failure 001139

TCH release due to BSS failure 001140

TCH seizure failure due to congestion 001141

Queued urgent HO attempts not served 001147

TCH request rejected due to bad quality in adjacents 001151

TCH req rej when qual betw good and bad in adj 001153

HSCSD connection releases due to failure 001164

TCH request for direct access rejected due to lack 001166

Rej TCH seiz for BSC contr TRHO due lack of res 001169

TCH request in DADLB HO rejected 001171

TCH drop due to too low RX level 001194

TCH releases due to radio failures, updated in phases 9-11

001198

TCH releases due to BSS failures, updated in phases 2-3

001199

TCH releases due to BSS failures, updated in phases 9-11

001200

Dropped calls after TCH assignment 001202

Number of TCH drops between Assignment Complete and RF Channel Release messages

001204

Number of TCH releases due to radio failures, updated only in phases 2-3

001205

Number of TCH releases due to radio failures, updated only in phases 12-14

001206

Number of TCH releases due to BSS failures, updated only in phases 12-14

001207

Number of TCH requests rejected due to the mismatch between the types of the requested channel and the A interface circuit, updated only in call setup phase

001208

Number of TCH releases due to BSC-BSC conflict in call setup

001211

Number of TCH releases due to BSC-BSC conflict for target channel

001212



26 DN9813827




• Other counters

Number of TCH requests rejected due to lack of resources per BCSU

001216

TCH TR failure for IURG HO without a interface 001221

TCH ASSIGMENT FAILURE MS RETURN SDCCH 001229

Drops after DTM CS TCH assignment 001233

DTM CS TCH drops between ASSCOMPL and RFCH REL ACK

001234

TCH ended due transcoder failure codec 5 001254

TCH request reject due to Abis congestion 001268

Call setup reject due to Abis congestion 001269

TCH request reject due to ETP overload 001272

Call setup reject due todue to ETP overload 001273

TCH REQUEST REJECTED DUE TO TX POWER 001298




Average queue length for channel seizure request 001018

Queue denominator 1 001019

Average queue time of call attempts 001020


Average queue time of HO attempts 001022


Not relevant 001032

Not relevant 001073

Not relevant 001082

Successful MOC test call 001093

Unsuccessful MOC test call 001094

Average queuing time of urgent HO attempts 001143


Average queuing time of non-urgent HO attempts 001145


Successful AMR codec set downgrades 001185

Unsuccessful AMR codec set downgrades 001186

Successful AMR codec set upgrades 001187

Unsuccessful AMR codec set upgrades 001188

Table 8 Other counters

DN9813827 27



Internal to external HO 001217

Not changed internal HO 001218

IURG relocation resource request 001219

IURG relocation resource allocation successful 001220

IURG relocation resource release 001222

Forced release after forced HO 001235

Class 2 subscriber forced release 001236

DR TRAU downgrade attempted in AMR HO 001243

DR TRAU downgrade attempt failed 001244

DR TRAU upgrade attempted in AMR HO 001245

DR TRAU upgrade attempt failed 001246

Internal AMR HO to external 001249

Time of WB-AMR calls 001251

Codec type change from AMR to WB-AMR successful 001255

Codec type change from WB-AMR to AMR successful 001256

DHR multiplexing attempts 001263

DHR multiplexing failure due to TCH resource 001264

CSDAP resource allocation attempts for DHR 001265

DHR multiplexing failure due to CSDAP resource 001266

DHR multiplexing failure due to other reason 001267

MO LS call successful 001274

MT LS call successful 001275

LS establishment unsuccessful due to CODEC 001276

LS release due to inter handover outside LS area 001277

LS release due to external handover 001278

LS release due to supplementary service establisment 001279

DFR MULTIPLEXING ATTEMPTS IN 8K TRAU MODE

001288

TRAU DOWNGRADE ATTEMPTED IN DFR MULTI-PLEXING

001289

TRAU DOWNGRADE FAILED IN DFR MULTIPLEX-ING

001290

TRAU UPGRADE ATTEMPTED IN DFR DEMULTI-PLEXING

001291

TRAU UPGRADE FAILED IN DFR DEMULTIPLEX-ING

001292

DFR MULTIPLEXING ATTEMPTS 001293


Table 8 Other counters (Cont.)

28 DN9813827




• GPRS counters

• Spare counters

DFR MULTIPLEXING FAILURE DUE TO TCH RESOURCE

001294

CSDAP RESOURCE ALLOCATION ATTEMPTS FOR DFR

001295

DFR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

001296

DFR MULTIPLEXING FAILURE DUE TO OTHER REASON

001297

POWER BALANCING HANDOVER REQUESTED 001299

POWER BALANCING HO REQUEST REJECTED 001300


Table 8 Other counters (Cont.)


GPRS territory upgrade requests 001174

Incompletely served GPRS territory upgrade requests 001175

GPRS upgrade requests rejected due to CSW traffic 001176

GPRS upgrade requests rejected due to lack of PSW 001177

GPRS upgrade requests rejected due to to lack of PCU

001178

GPRS downgrades due to increase in CSW traffic 001179

GPRS upgrades due to decrease in CSW traffic 001180

GPRS territory downgrade requests 001181

GPRS territory downgrade rejected due to streaming traffic

001209

GPRS territory downgrade rejected due to need of CS resources.

001210

Number of GPRS territory upgrade requestes from CSW

001213

Number of GPRS territory upgrade requests from CSW, partially successful

001214

Number of GPRS territory upgrade requests from CSW, failed

011215

GPRS territory upgrade request due to DLDC 001257

GPRS territory upgrade request due to DLDC reject 001258

GPRS territory upgrade reject due to ABIS 001270

GPRS TER UG REJ DUE LACK TX POWER 001301

Table 9 GPRS counters

DN9813827 29



Related topics

• Counters of Traffic Measurement • Signalling charts of Traffic Measurement • Signalling charts of Dual Transfer Mode

Instructions

• BSC Statistics AdministrationFor information on using this measurement to test the activation of related software, see the testing instructions in:

• Activating and Testing BSS6071: EFR • Activating and Testing BSS6115: Half Rate • Activating and Testing BSS7003 and BSS7037: HSCSD and 14.4 kbit/s Data

Services • Activating and Testing BSS7036: Dynamic SDCCH • Activating and Testing BSS9006: GPRS • Activating and Testing BSS10004: AMR • Activating and Testing BSC3910: Pre-emption and BSS20869: Market Expansion

Toolkit • Activating and Testing BSS21274: Long Reach TSL (2G BTS) • Activating and Testing BSS20960: Wideband AMR

Reference

• BSC Measurement Counters Displaying Program (FOXMEA) • Performance Measurements

Descriptions

• Advanced Multilayer Handling • Direct Access to Desired Layer/Band


Spare001191 001191

Spare001223 001223

Spare001224 001224

Spare001230 001230

Spare001271 001271

Spare001280 001280

Spare001281 001281

Spare001282 001282

Spare001283 001283

Spare001284 001284

Spare001285 001285

Spare001286 001286

Spare001287 001287

Table 10 Spare counters

30 DN9813827




• Directed Retry in BSC • Dual Transfer Mode in BSC • Dynamic Abis • Dynamic Frequency and Channel Allocation in BSC • Dynamic SDCCH in Radio Channel Allocation • GPRS/EDGE System Feature Description • Enhanced Coverage by Frequency Hopping • Enhanced Speech Codecs: AMR and EFR • Extended Cell Range • FACCH Call Set-up • Half Rate in BSC • Handover Support for Coverage Enhancements • HSCSD and 14.4 kbit/s Data Services in BSC • Intelligent Underlay-Overlay • Multi BCF Control in BSC • Radio Resource Pre-emption and Queuing in BSC • Traffic Reason Handover in BSC • BSS20960: Wideband AMR • BSS21343: DLDC Territory Procedures • BSS21222: Energy Optimised TCH Allocation • BSS21454: Packet Abis over IP/Ethernet • BSS21440: Packet Abis over TDM • BSS21528: ISHO acceleration via Iur-g • BSS21309: OSC Half Rate with SAIC MS • BSS21325: 8K TRAU FOR OSC AMR FR • BSS21327: Local Switching for Packet Abis • BSS21534: OSC Full Rate with SAIC MS

DN9813827 31

1 Traffic Measurement Counters of Traffic Measurement

Id:0900d805808bd24bConfidential

3 Counters of Traffic Measurement

3.1 001000 / SEIZURE ATTEMPTS

3.2 001001 / SEIZURE ATTEMPTS WITH BUSY SDCCH

Counter ID: 001000 Network element name: SEIZURE ATTEMPTS

Version: 4.0 NetAct name: SDCCH_SEIZ_ATT

Description: Number of times when an MS attempts to seize an SDCCH.

Updated: When the RRM receives requests for SDCCH from an MS as the MS needs a channel for either a call or a HO.

See figures: - Basic call with counters- FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel - SDCCH congestion, FACCH call setup is not activated - Successful SDCCH internal intra-cell handover - Successful SDCCH internal inter-cell handover - Successful SDCCH external handover target - Reconfiguration from TCH to SDCCH

Logical type: Sum Trigger type: Event Sampling interval:

Unit: Integer number Range: Example values:

Dependencies with other counters:

Operability class:

Related to feature: Related to standard:

3GPP Measurement name (Clause header):

3GPP Measurement type:

Exceptions to related standard:

Used from release: S1 Definition updated in release:

Counter ID: 001001 Network element name: SEIZURE ATTEMPTS WITH BUSY SDCCH

Version: 4.0 NetAct name: SDCCH_BUSY_ATT

Description: Number of times when an MS attempts to seize an SDCCH but the attempt is unsuccessful because all SDCCHs are busy. This counter does not neces-sarily mean that the call attempt is lost, because the call may be established as an FACCH call setup using TCH instead of SDCCH. This counter is not triggered when the TCH reconfiguration is attempted because of dynamic SDCCH allocation. If the attempt fails, the SDCCH_busy_attempt is triggered together with 1155 UNSUCC_IMM_ASS_SDCCH_ATTEMPT.

32 DN9813827



Counters of Traffic Measurement

3.3 001002 / TRANSACTIONS FAIL DUE TO BSS FAIL

Updated: When the RRM has no SDCCHs to allocate for a call or HO attempts.

See figures: - FACCH call setup due to SDCCH congestion with counters - FACCH call setup because of SDCCH congestion - SDCCH congestion, FACCH call setup is not activated




Operability class:

Related to feature:

BSS20003: CS Statistics Enhancements

Related to standard:





Counter ID: 001002 Network element name: TRANSACTIONS FAIL DUE TO BSS FAIL

Version: 4.1 NetAct name: SDCCH_BSS_FAIL

Description: Number of SDCCH transactions ended because of a BSS failure.

Impact: See field descriptions of the counters 001033, 001034, 001035, and 001036.

Updated: When one of the counters 001033, 001034, 001035, or 001036 is updated. This counter represents their sum.

See figures: - Unsuccessful SDCCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - SDCCH assignment failure - Unsuccessful SDCCH activation, timer expires while waiting for PHYSICAL_CONTEXT_CONFIRM message - TRX/TSL is blocked with different causes during an SDCCH channel activation - Unsuccessful SDCCH internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful SDCCH external handover, timer expires while waiting for CLEAR_COMMAND message




DN9813827 33



3.4 001003 / TRANSACTIONS FAIL DUE TO RADIO FAIL

3.5 001004 / TRANSACTIONS FAIL DUE RADIO ON SOURCE CHANNEL DURING HO

Operability class:






Counter ID: 001003 Network element name: TRANSACTIONS FAIL DUE TO RADIO FAIL

Version: 4.1 NetAct name: SDCCH_RADIO_FAIL

Description: Number of SDCCH transactions ended because of a radio failure.

Impact: Call cleared

Reason for the Impact: External / Abis Interface

Updated: When an SDCCH transaction ends because of a radio failure (radio link timeout) and the RRM releases the SDCCH.

This counter is updated in call phases 1-8 only.

See figures: - TCH assignment failure - Connection failure during SDCCH assignment




Operability class:






Counter ID: 001004 Network element name: TRANSACTIONS FAIL DUE RADIO ON SOURCE CHANNEL DURING HO

34 DN9813827




3.6 001005 / TRANSACTIONS FAIL DUE RADIO ON TARGET CHANNEL

Version: 4.1 NetAct name: SDCCH_RF_OLD_HO

Description: Number of SDCCH transactions ended because of a radio failure on the source channel during a handover between SDCCH-SDCCH or SDCCH-TCH.

It is this counter in the source cell that is updated. If the target cell lies within the same BSC, also counter 001005 in the target cell is updated along with this counter.

Impact: HO failure and call cleared

Updated: When an SDCCH transaction ends because of a radio failure (HO failure) on the source channel during a handover attempt and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH internal inter-cell handover, BTS sends CONNECTION_FAILURE message.




001005: TRANSACTIONS FAIL DUE RADIO ON TARGET CHANNEL

Operability class:






Counter ID: 001005 Network element name: TRANSACTIONS FAIL DUE RADIO ON TARGET CHANNEL

Version: 4.1 NetAct name: SDCCH_RF_NEW_HO

Description: Number of SDCCH transactions ended because of a radio failure on the target channel during an SDCCH HO.

Impact: HO failure, the call may possibly be cleared

Reason for the impact: Since the MS cannot access the target channel, a radio failure occurs. The unsuccessful seizure may have been caused by a missing indication of call establishment, missing detection of HO, missing indication of the HO completed, or corrupted messages related to the HO.

DN9813827 35



3.7 001006 / SUCCESS SEIZURE FOR HO

Updated: When an SDCCH transaction ends because of a radio failure on the target channel during a handover attempt and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH internal intra-cell handover, CONNECTION_FAILURE message comes to the target channel during handover.




Operability class:






Counter ID: 001006 Network element name: SUCCESS SEIZURE FOR HO

Version: 4.0 NetAct name: SDCCH_HO_SEIZ

Description: Number of successful SDCCH seizures for a handover.

Updated: When the RRM allocates an SDCCH as a response to an SDCCH request in a handover attempt.

See figures:- Successful SDCCH internal intra-cell handover- Successful SDCCH internal inter-cell handover- Successful SDCCH external handover target




Operability class:






36 DN9813827




3.8 001007 / SUCCESS SEIZURE FOR IMMEDIATE ASSIGN-MENT

3.9 001008 / SUCCESS TCH SEIZURE FOR HO

Counter ID: 001007 Network element name: SUCCESS SEIZURE FOR IMMEDIATE ASSIGNMENT

Version: 4.0 NetAct name: SDCCH_ASSIGN

Description: Number of successful seizures of SDCCH for an immediate assignment.

Updated: When the RRM allocates an SDCCH for an immediate assignment in a call attempt.

See figures:- Basic call with counters- Reconfiguration from TCH to SDCCH




Operability class:






Counter ID: 001008 Network element name: SUCCESS TCH SEIZURE FOR HO

Version: 4.0 NetAct name: TCH_HO_SEIZ

Description: Number of successful requests for a TCH in a handover.

Updated: When the RRM allocates a TCH as a response to a TCH request in a handover attempt. The channel is reserved by the RRM, but the success of the HO is not known in this phase.

See figures:- Successful internal intra-cell handover- Internal intra-cell HO, successful TCH queuing- Successful internal inter-cell handover- Successful external handover, target




DN9813827 37



3.10 001009 / SUCCESS TCH SEIZURE FOR NORMAL ASSIGN-MENT

3.11 001010 / TCH REQUEST SUCCESS AND UNSUCCESS

Operability class:






Counter ID: 001009 Network element name: SUCCESS TCH SEIZURE FOR NORMAL ASSIGNMENT

Version: 4.0 NetAct name: TCH_NORM_SEIZ

Description: Number of successful requests for a TCH in a normal assignment.

Updated: When the RRM allocates a TCH as a response to a TCH request in a call attempt.

See figures:- Basic call with counters- Basic call with priority subscriber- Successful TCH queuing- Successful forced release- Successful forced handover




Operability class:






Counter ID: 001010 Network element name: TCH REQUEST SUCCESS AND UNSUCCESS

Version: 4.0 NetAct name: TCH_REQUEST

Description: Total number of requests for a TCH (successful and unsuccessful).

38 DN9813827




3.12 001011 / TCH REQUEST REJECTED DUE TO LACK

Updated: When the RRM receives a request for a TCH either in a call or a handover attempt.

See figures: - Basic call with counters - Basic call with priority subscriber - FACCH call setup due to SDCCH congestion with counters - FACCH call setup because of SDCCH congestion - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover




Operability class:






Counter ID: 001011 Network element name: TCH REQUEST REJECTED DUE TO LACK

Version: 4.1 NetAct name: TCH_REQ_REJ_LACK

DN9813827 39



3.13 001012 / TRANSACTIONS ENDED DUE TO BSS PROBLEM

Description: Number of requests for TCHs that are rejected because there are no radio resources available. All kinds of procedures used to request a TCH are consid-ered, that is, the TCH is rejected if there is no requested resources available for assignments using the normal TCH assignment procedure and assignments for all kinds of (incoming) handovers. This counter is also updated when a request for TCH is rejected because of a mismatch between the types of the requested channel and the A interface circuit.

See also counter 004079.

Updated: When the RRM has no TCHs available for either call or HO attemptrequests, or the RRM changes the A interface circuit pool before the TCH allocation.This counter may be updated immediately after a TCH request or, in case of queu-ing,when the queuing timer expires.NOTE! In case of DR this counter is updated as follows:1) When a call is removed from the queue because of a DR attempt, this counter isNOT updated on the SOURCE side, instead counter 001173 is updated.2) If queuing is not used or the queuing timer expires before a DR attempt, thiscounter is updated on the SOURCE side.3) On the TARGET side, this counter is updated in case of congestion (blocking).See figures:- Basic call without counters- Basic call, no free TCHs, unsuccessful queuing and directed retry not activated- TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed- Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed- Internal intra-cell handover, unsuccessful TCH queuing- Unsuccessful forced release- Unsuccessful forced release with external handover- Unsuccessful forced handover




004079: CAUSE DIR RETRY

Operability class:





Used from release: S1 Definition updated in release:S15

Counter ID: 001012 Network element name: TRANSACTIONS ENDED DUE TO BSS PROBLEM

40 DN9813827




3.14 001013 / TRANSACTIONS ENDED DUE RADIO FAIL

Version: 4.1 NetAct name: TCH_BSS_FAIL

Description: Number of TCH transactions ended because of BSS problems.

Impact: See descriptions of counters 001045, 001046, 001047 and 001051.

Updated: When one of the counters 001045, 001046, 001047, or 001051 is updated. This counter represents their sum.

See figures: - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure, MSC sends CLEAR_COMMAND message - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT




Operability class:






Counter ID: 001013 Network element name: TRANSACTIONS ENDED DUE RADIO FAIL

Version: 4.1 NetAct name: TCH_RADIO_FAIL

Description: Number of TCH transactions ended because of a radio failure.


DN9813827 41



3.15 001014 / TRANSACTIONS ENDED DUE SOURCE CHANNEL FAIL DURING HO

Updated: When a TCH transaction ends because of a radio failure and the RRM releases the TCH. This counter is typical in connection with coverage problems. ERROR INDICATION is sent by the BTS to the BSC in the following cases: - Sequence error in a received message (the case where retransmission is not possi-ble). - Timer T200 has expired N200 +1 times (MS does not respond any more). - Unsolicited DM response when link is established.

This counter is updated in call phases 1-8 or 15 only.

See figures: - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT




Operability class:






Counter ID: 001014 Network element name: TRANSACTIONS ENDED DUE SOURCE CHANNEL FAIL DURING HO

Version: 4.1 NetAct name: TCH_RF_OLD_HO

Description: Number of TCH transactions ended because of a radio failure on the source channel during a handover attempt.


Updated: When a TCH transaction ends because of a radio failure (HO failure) on the source channel during a handover attempt.


See figure Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared.




42 DN9813827




3.16 001015 / TRANSACTIONS ENDED DUE TARGET CHANNEL FAIL

Operability class:






Counter ID: 001015 Network element name: TRANSACTIONS ENDED DUE TARGET CHANNEL FAIL

Version: 4.1 NetAct name: TCH_RF_NEW_HO

Description: A TCH transaction ends because of a radio failure (HO failure) on the target channel during a handover attempt.

Counter 001088 is also updated along with this counter if the MS fails to return to the old channel during an inter-BSC handover.


Reason for the impact: Since the MS cannot access the target channel, a radio failure occurs. It may be caused by missing indication of call establishment, missing detec-tion of HO, missing indication of the HO completed or corrupted messages related to HO.

Updated: When a TCH transaction ends because of a radio failure on the target channel during a handover attempt.





001088: TCH A IF FAIL SOURCE

Operability class:






DN9813827 43



3.17 001016 / CALL ATTEMPTS IN THE QUEUE

3.18 001017 / HANDOVER ATTEMPTS IN THE QUEUE

Counter ID: 001016 Network element name: CALL ATTEMPTS IN THE QUEUE

Version: 4.0 NetAct name: TCH_QD_CALL_ATT

Description: Number of call attempts set in the queue for a TCH.

Counter 001010 is updated along with this counter.

Updated: When the RRM puts a TCH request for call attempt in the queue since it has no TCHs of the requested kind available.

See figures: - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated




001010: TCH REQUEST SUCCESS AND UNSUCCESS

Operability class:






Counter ID: 001017 Network element name: HANDOVER ATTEMPTS IN THE QUEUE

Version: 4.0 NetAct name: TCH_QD_HO_ATT

Description: Number of HO attempts set in the queue for a TCH.


Updated: When the RRM sets a TCH request for a handover attempt in the queue since it has no TCHs of the requested kind available.

See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing- Internal directed retry



44 DN9813827




3.19 001018 / AVE QUEUE LENGTH FOR CHANNEL SEIZURE REQUEST

3.20 001019 / QUEUE DENOMINATOR 1



Operability class:






Counter ID: 001018 Network element name: AVE QUEUE LENGTH FOR CHANNEL SEIZURE REQUEST

Version: 4.1 NetAct name: AVE_Q_SEIZ_REQ

Description: Average number of requests for channel seizure in the queue.

Updated: Every 20 seconds, as averaging takes place once in the measurement period. The sample counter is updated when a request is set in the queue or removed from it. Updated only for the normal coverage area.

See figure Average counter updating.

Logical type: Sum Trigger type: Sample Sampling interval: 20 s



Operability class:

Related to feature:

BSS21277: 105km Extended Cell CS






Counter ID: 001019 Network element name: QUEUE DENOMINATOR 1

Version: 4.0 NetAct name: QUEUE_DENOM1

Description: Denominator of the average number of requests for channel seizure (always > 0).

Updated:

DN9813827 45



3.21 001020 / AVE QUEUE TIME OF CALL ATTEMPTS

Logical type: Sum Trigger type: Sample Sampling interval: 20 s



Operability class:






Counter ID: 001020 Network element name: AVE QUEUE TIME OF CALL ATTEMPTS

Version: 4.0 NetAct name: AVE_Q_TIM_CALL_ATT

Description: The average time for which call attempts are kept in the queue (the unit of the value is 10 ms).

In a successful case counters 001009 and 001021 are updated along with this counter. In an unsuccessful case counters 001021, 001024 and 001060 are updated along with this counter.

Updated: When a TCH request for a call attempt is removed from the queue (both in a successful and unsuccessful case).

See figures: - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated

Logical type: Sum Trigger type: Duration Sampling interval:

Unit: 10 ms Range: Example values:


001009: SUCCESS TCH SEIZURE FOR NORMAL ASSIGNMENT

001021: QUEUE DENOMINATOR 2

001024: NOT SERVED QUEUED CALL ATTEMPTS

001060: QUE ALL ASSIGN REQ FAIL

Operability class:






46 DN9813827





3.23 001022 / AVE QUEUE TIME OF HO ATTEMPTS



Description: Denominator of the average time for which call attempts are kept in the queue (always > 0).

Updated: See figures: - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated




Operability class:






Counter ID: 001022 Network element name: AVE QUEUE TIME OF HO ATTEMPTS

Version: 4.0 NetAct name: AVE_Q_TIM_HO_ATT

Description: The average time for which HO attempts are kept in the queue (the unit of the value is 10 ms).

In a successful case counters 001008 and 001023 are updated along with this counter. In an unsuccessful case counters 001023, 001025 and 001068 are updated along with this counter.

Updated: When a TCH request for a handover attempt is removed from the queue (both in a successful and unsuccessful case).

See figures: - Internal intra-cell HO, successful TCH queuing - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry



DN9813827 47




3.25 001024 / NOT SERVED QUEUED CALL ATTEMPTS


001008: SUCCESS TCH SEIZURE FOR HO


001025: NOT SERVED QUEUED HO ATTEMPTS

001068: QUE ALL HO REQ FAIL

Operability class:








Description: Denominator of the average time for which HO attempts are kept in the queue (always > 0).

Updated: See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing- Internal directed retry




Operability class:






Counter ID: 001024 Network element name: NOT SERVED QUEUED CALL ATTEMPTS

Version: 4.0 NetAct name: UNSRV_QD_CALL_ATT

48 DN9813827




3.26 001025 / NOT SERVED QUEUED HO ATTEMPTS

Description: Number of call attempts in the queue which were not served.

Counters 001020, 001021 and 001060 are updated along with this counter.

Updated: When a call attempt is removed from the queue because a timer expires, or the call attempt is substituted by another attempt of higher priority. NOTE! This counter is not updated in DR (neither in a successful or unsuccessful DR).

See figure Basic call, no free TCHs, unsuccessful queuing and directed retry not acti-vated.




001020: AVE QUEUE TIME OF CALL ATTEMPTS


001060: QUE ALL ASSIGN REQ FAIL

Operability class:






Counter ID: 001025 Network element name: NOT SERVED QUEUED HO ATTEMPTS

Version: 4.0 NetAct name: UNSRV_QD_HO_ATT

Description: Number of HO attempts in the queue which were not served.


Updated: When a handover attempt is removed from the queue because a timer expires, or the HO attempt is substituted by another attempt of higher priority.

See figure Internal intra-cell handover, unsuccessful TCH queuing.




001022: AVE QUEUE TIME OF HO ATTEMPTS



DN9813827 49



3.27 001026 / TCH CALL REQ

Operability class:






Counter ID: 001026 Network element name: TCH CALL REQ

Version: 4.0 NetAct name: TCH_CALL_REQ

Description: Number of TCH requests for a normal assignment (both successful and unsuccessful).


Updated: When the RRM receives a TCH request in a call attempt.

See figures: - Basic call with counters - Basic call with priority subscriber - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Internal directed retry - Successful forced release - Unsuccessful forced release - Successful forced handover - Unsuccessful forced handover





Operability class:






50 DN9813827




3.28 001027 / SDCCH ACT FAIL

3.29 001028 / TCH ACT FAIL

Counter ID: 001027 Network element name: SDCCH ACT FAIL

Version: 4.1 NetAct name: SDCCH_ACT_FAIL

Description: Number of SDCCH transactions that are ended because of a failure in the activation of a channel either during a call or HO attempt.

Impact:- Call cleared- HO failure

Reason for the impact: External / Abis interface

Updated: When either of the counters 001072 and 001074 is updated. This counter represents their sum.

See figures:- Unsuccessful SDCCH activation- Unsuccessful SDCCH internal intra-cell handover, unsuccessful channel activation




Operability class:






Counter ID: 001028 Network element name: TCH ACT FAIL

Version: 4.1 NetAct name: TCH_ACT_FAIL

Description: Number of TCH transactions that are ended because of a failure in the activation of a channel either during a call or HO attempt.


Reason for the impact: Abis Interface

DN9813827 51



3.30 001029 / TCH TR FAIL

Updated: When either of the counters 001081 and 001083 is updated. This counter represents their sum.

See figures:- Unsuccessful TCH activation- Unsuccessful internal inter-cell handover




Operability class:






Counter ID: 001029 Network element name: TCH TR FAIL

Version: 4.1 NetAct name: TCH_TR_FAIL

Description: Number of TCH transactions that are ended because of a transcoder failure.


Updated: When a TCH transaction ends because of a transcoder failure during a call attempt and the RRM releases the TCH. These failures can also contain situations when the timer T3109 expires in a BSC in call release phase while waiting for the Release Indication. The MS subscriber does not see these failures caused by the T3109 expiry as real drop calls.


See figure CONNECTION_FAILURE message with cause transcoder_failure during a call.




Operability class:




52 DN9813827




3.31 001030 / TCH TR FAIL SOURCE

3.32 001031 / TCH TR FAIL TARGET



Counter ID: 001030 Network element name: TCH TR FAIL SOURCE

Version: 4.1 NetAct name: TCH_TR_FAIL_OLD

Description: Number of TCH transactions that are ended because of a transcoder failure on the source channel during a handover on a TCH.


Updated: When a TCH transaction ends because of a transcoder failure on the source channel during a handover attempt and the RRM releases the TCH. This happens before the RRM receives a message from the MS stating that the HO or assignment is completed.





Operability class:






Counter ID: 001031 Network element name: TCH TR FAIL TARGET

Version: 4.1 NetAct name: TCH_TR_FAIL_NEW

Description: Number of TCH transactions that are ended because of a transcoder failure on the target channel during a handover on a TCH.


DN9813827 53



3.33 001032 / NOT RELEVANT

3.34 001033 / SDCCH ABIS PROBL

Updated: When a TCH transaction ends because of a transcoder failure on the target channel during a handover attempt and the RRM releases the TCH. This happens before the RRM receives a message from the MS stating that the HO or assignment is completed.


See figure Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel.




Operability class:






Counter ID: 001032 Network element name: NOT RELEVANT

Version: 4.0 NetAct name: SDCCH_FAST_SEIZ

Description: This counter is not in use

Updated: This counter is not updated

Logical type: Trigger type: Sampling interval:

Unit: Range: Example values:


Operability class:






Counter ID: 001033 Network element name: SDCCH ABIS PROBL

Version: 4.1 NetAct name: SDCCH_ABIS_FAIL

54 DN9813827




3.35 001034 / SDCCH A IF PROBL

Description: Number of SDCCH transactions that are ended because of a failure in the Abis interface.



Updated: When any of the counters 001075, 001076 or 001077 is updated. This counter represents their sum.

See figures: - Unsuccessful SDCCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful SDCCH activation, timer expires while waiting for PHYSICAL_CONTEXT_CONFIRM message - TRX/TSL is blocked with different causes during an SDCCH channel activation - Unsuccessful SDCCH internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message




Operability class:






Counter ID: 001034 Network element name: SDCCH A IF PROBL

Version: 4.1 NetAct name: SDCCH_A_IF_FAIL

Description: Number of SDCCH transactions that are ended because of a failure in the A interface.


Reason for the impact: External / A interface

DN9813827 55



3.36 001035 / SDCCH LAPD FAIL

Updated: When any of the counters 001078, 001079, and 001080 is updated. This counter represents their sum.

See figures: - SDCCH assignment failure - Unsuccessful SDCCH external handover, timer expires while waiting for CLEAR_COMMAND message




Operability class:






Counter ID: 001035 Network element name: SDCCH LAPD FAIL

Version: 4.1 NetAct name: SDCCH_LAPD_FAIL

Description: Number of SDCCH transactions that are ended because of an LAPD failure. (The blocked TRX is in one of these substates: signalling link fault or PCM fault.)



Updated: When an SDCCH transaction ends because of a TRX blocked by an LAPD failure and the RRM releases the SDCCH.

See figure TRX/TSL is blocked with different causes during an SDCCH channel acti-vation.




Operability class:




56 DN9813827




3.37 001036 / SDCCH BTS FAIL

3.38 001037 / SDCCH USER ACT



Counter ID: 001036 Network element name: SDCCH BTS FAIL

Version: 4.1 NetAct name: SDCCH_BTS_FAIL

Description: Number of SDCCH transactions that are ended because of a BTS failure. (The blocked TRX is in one of these substates: FU fault, CU fault, BTS reset, BCF reset, both CU and FU fault, BCF fault.)


Updated: When an SDCCH transaction ends because of a TRX being blocked by a BTS failure and the RRM releases the SDCCH.





Operability class:






Counter ID: 001037 Network element name: SDCCH USER ACT

Version: 4.1 NetAct name: SDCCH_USER_ACT

Description: Number of SDCCH transactions that are ended because of user actions. (The TRX/TSL is in substate blocked by the user.)


DN9813827 57



3.39 001038 / SDCCH BCSU RESET

Updated: When the user disconnects a busy SDCCH by blocking the TSL/TRX with an MML command. The transaction ends and the SDCCH is released.





Operability class:






Counter ID: 001038 Network element name: SDCCH BCSU RESET

Version: 4.1 NetAct name: SDCCH_BCSU_RESET

Description: Number of SDCCH transactions that are ended because of a BCSU/BCXU restart.


Reason for the impact: BCSU/BCXU restart

Updated: When an SDCCH transaction ends because of a TRX blocked by a BCSU/BCXU restart and the RRM releases the SDCCH.




Operability class:






58 DN9813827




3.40 001039 / SDCCH NETW ACT

3.41 001040 / TRUNK RES INVOC

Counter ID: 001039 Network element name: SDCCH NETW ACT

Version: 4.1 NetAct name: SDCCH_NETW_ACT

Description: Number of SDCCH transactions ended because of a reconfiguration of the radio network. (The TRX blocked is in substate blocked by the system.)


Reason for the impact: See Radio Network Management, Service Block Description, for radio network reconfiguration.

Updated: When an SDCCH transaction ends because of a TRX blocked by a failure which leads to TRX reconfiguration. The failure may occur both during call and HO attempts.





Operability class:






Counter ID: 001040 Network element name: TRUNK RES INVOC

Version: 4.0 NetAct name: TRUNK_RES_INVOC

Description: Total number of Trunk Reservation function invocations.

Updated: When Trunk Reservation is applied during call setup or handover in Radio Resource Management.

See figures:- Successful trunk reservation- Unsuccessful trunk reservation



DN9813827 59



3.42 001041 / SUCC TRUNK RES INVOC

3.43 001042 / TRUNK RES INVOC RES REFUSED


Operability class:

Related to feature:

BSC1006: Trunk Reservation






Counter ID: 001041 Network element name: SUCC TRUNK RES INVOC

Version: 4.0 NetAct name: TRUNK_RES_INVOC_SUCC

Description: Number of successful Trunk Reservation function invocations.

Updated: When Trunk Reservation allows resources to be allocated in call setup or handover in Radio Resource Management.

See figure Successful trunk reservation.




Operability class:

Related to feature:







Counter ID: 001042 Network element name: TRUNK RES INVOC RES REFUSED

Version: 4.0 NetAct name: TRUNK_RES_INVOC_REFUSED

Description: Number of Trunk Reservation function invocations that result in resource allocation being refused.

60 DN9813827




3.44 001043 / TCH REQ FACCH CALLSET

Updated: When Trunk Reservation denies access and does not allow resources to be allocated in call setup or handover in Radio Resource Management.

See figure Unsuccessful trunk reservation.




Operability class:

Related to feature:







Counter ID: 001043 Network element name: TCH REQ FACCH CALLSET

Version: 4.0 NetAct name: TCH_FAST_REQ

Description: Number of TCH requests for FACCH call setup during SDCCH conges-tion (both successful and unsuccessful).

Counters 001010 and 001098 are updated along with this counter.

Updated: When the RRM receives a request for an SDCCH but there are no SDCCHs idle and a TCH is tried to be allocated as part of the FACCH call setup. It is indicated in the received SDCCH request whether a FACCH setup is allowed or not.

See figures: - FACCH call setup due to SDCCH congestion with counters - FACCH call setup because of SDCCH congestion





001098: TCH SEIZ ATT DUE SDCCH CON

Operability class:

Related to feature:

BSS5290: FACCH Call Setup due to SDCCH Congestion




DN9813827 61



3.45 001044 / TCH SEIZ FACCH CALL SET

3.46 001045 / TCH ABIS PROBL



Counter ID: 001044 Network element name: TCH SEIZ FACCH CALL SET

Version: 4.0 NetAct name: TCH_FAST_SEIZ

Description: Number of successful seizures of TCHs in FACCH call setup.


Updated: When the RRM allocates a TCH as a response to an SDCCH request as part of the FACCH call setup because of no SDCCHs being idle.

See figure FACCH call setup due to SDCCH congestion with counters.




001099: TCH SEIZ DUE SDCCH CON

Operability class:

Related to feature:







Counter ID: 001045 Network element name: TCH ABIS PROBL

Version: 4.1 NetAct name: TCH_ABIS_FAIL

Description: Number of TCH transactions that are ended because of a failure in the Abis interface.

Impact:- The call may possibly be cleared- HO failure

Reason for the impact: External / Abis Interface

62 DN9813827




3.47 001046 / TCH LAPD FAIL

Updated: When any of the counters 001084, 001085, and 001086 is updated. This counter represents their sum.

See figures: - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT




Operability class:






Counter ID: 001046 Network element name: TCH LAPD FAIL

Version: 4.1 NetAct name: TCH_LAPD_FAIL

Description: Number of TCH transactions that are ended because of an LAPD failure. (The blocked TRX is in one of these substates: signalling link fault or PCM fault.)


Updated: When a TCH transaction ends because of a TRX blocked by an LAPD failure and the RRM releases the TCH.

See figure TRX or TSL is blocked with different causes during a call.




Operability class:




DN9813827 63



3.48 001047 / TCH BTS FAIL

3.49 001048 / TCH USER ACT



Counter ID: 001047 Network element name: TCH BTS FAIL

Version: 4.1 NetAct name: TCH_BTS_FAIL

Description: Number of TCH transactions that are ended because of a BTS failure. (The blocked TRX is in one of these substates: FU fault, CU fault, BTS reset, BCF reset, both CU and FU fault, BCF fault.)


Updated: When a TCH transaction ends because of a TRX blocked by a BTS failure and the RRM releases the TCH.





Operability class:






Counter ID: 001048 Network element name: TCH USER ACT

Version: 4.1 NetAct name: TCH_USER_ACT

Description: Number of TCH transactions that are ended because of user actions. (The TRX/TSL is in substate blocked by the user.)


Updated: When the user disconnects a busy TCH by blocking the TSL/TRX with an MML command. The transaction ends and the TCH is released.



64 DN9813827




3.50 001049 / TCH BCSU RESET

3.51 001050 / TCH NETW ACT



Operability class:






Counter ID: 001049 Network element name: TCH BCSU RESET

Version: 4.1 NetAct name: TCH_BCSU_RESET

Description: Number of TCH transactions that are ended because of a BCSU/BCXU restart.


Reason for the impact: BCSU/BCXU restart

Updated: When a TCH transaction ends because of a TRX blocked by a BCSU/BCXU restart and the RRM releases the TCH.




Operability class:






Counter ID: 001050 Network element name: TCH NETW ACT

Version: 4.1 NetAct name: TCH_NETW_ACT

DN9813827 65



3.52 001051 / TCH A IF PROBL

Description: Number of TCH transactions ended because of a reconfiguration of the radio network. (The blocked TRX is in substate blocked by the system.)

Reason for the impact: See Radio Network Management for radio network reconfig-uration.

Updated: When a TCH transaction ends because of a TRX blocked by a failure which leads to TRX reconfiguration.





Operability class:






Counter ID: 001051 Network element name: TCH A IF PROBL

Version: 4.1 NetAct name: TCH_A_IF_FAIL

Description: Number of TCH transactions that are ended because of a failure in the A interface.

Impact:- Call is possibly cleared- HO failure


Updated: When any of the counters 001087, 001088 or 001089 is updated. This counter represents their sum.

See figures: - TCH assignment failure, MSC sends CLEAR_COMMAND message - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure




66 DN9813827




3.53 001052 / TRHO REQ

3.54 001053 / TRHO ENQUIRIES

Operability class:






Counter ID: 001052 Network element name: TRHO REQ

Version: 4.1 NetAct name: TRHO_REQ

Description: Number of HOs because of traffic reasons.

Updated: When a handover (under the control of the MSC and because of a traffic reason procedure) is started as a response to the TRAFFIC_REASON_HO_CANDIDATE_ENQUIRY message from the A interface. The counter indicates the number of mobile stations to be handed over, as deter-mined by the MSC. Updated only for the normal coverage area.

See figure Successful traffic reason handover, source.




Operability class:

Related to feature:


BSC1005: Traffic Reason Handover






Counter ID: 001053 Network element name: TRHO ENQUIRIES

Version: 4.0 NetAct name: TRHO_ENQ

Description: Number of enquiries about traffic reason HO.

DN9813827 67



3.55 001054 / FOR REL ASSIGN REQ ATT

Updated: When the RRM starts a handover by sending a message enquiring about the traffic reason to the Abis interface.

See figure Successful traffic reason handover, source.




Operability class:

Related to feature:

BSC1005: Traffic Reason Handover






Counter ID: 001054 Network element name: FOR REL ASSIGN REQ ATT

Version: 4.0 NetAct name: FOR_REL_ASS_REQ_ATT

Description: Number of call attempt requests capable of doing a forced release for a call in progress.


Updated: When the RRM receives a TCH request for a call attempt which is capable of doing a forced release for a call in progress.

See figures:- Basic call with priority subscriber- Successful forced release- Unsuccessful forced release





Operability class:

Related to feature:

BSC3910: Queuing and Priority





68 DN9813827




3.56 001055 / FOR HO ASSIGN REQ ATT

3.57 001056 / QUE ALL ASSIGN REQ ATT


Counter ID: 001055 Network element name: FOR HO ASSIGN REQ ATT

Version: 4.0 NetAct name: FOR_HO_ASS_REQ_ATT

Description: Number of call attempt requests capable of doing a forced HO for a call in progress.


Updated: When the RRM receives a TCH request for a call attempt which is capable of doing a forced HO for a call in progress.

See figures:- Basic call with priority subscriber- Successful forced handover- Unsuccessful forced handover





Operability class:

Related to feature:







Counter ID: 001056 Network element name: QUE ALL ASSIGN REQ ATT

Version: 4.0 NetAct name: QUE_ALL_ASS_REQ_ATT

Description: Number of requests for a call attempt with queuing allowed.


DN9813827 69



3.58 001057 / QUE NALL ASSIGN REQ ATT

Updated: When the RRM receives a TCH request for a call attempt which is allowed to queue for channels.

See figures: - Basic call with counters - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation





Operability class:

Related to feature:







Counter ID: 001057 Network element name: QUE NALL ASSIGN REQ ATT

Version: 4.0 NetAct name: QUE_NALL_ASS_REQ_ATT

Description: Number of requests for a call attempt with queuing not allowed.


Updated: When the RRM receives a TCH request for a call attempt which is not allowed to queue for channels.

See figures: - Basic call with counters - Basic call, no free TCH and queuing or directed retry is not allowed - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation





Operability class:

70 DN9813827




3.59 001058 / FOR REL ASSIGN REQ FAIL

3.60 001059 / FOR HO ASSIGN REQ FAIL

Related to feature:







Counter ID: 001058 Network element name: FOR REL ASSIGN REQ FAIL

Version: 4.0 NetAct name: FOR_REL_ASS_REQ_FAIL

Description: Number of rejected call attempt requests capable of doing a forced release for a call in progress.


Reason for the impact: There is no suitable call for release in the cell or the pre-emption software is not in use in the BSC.

Updated: When the RRM rejects a TCH request for a call attempt which is capable of doing a forced release for a call in progress. The high priority TCH request is rejected because of lack of a suitable call for release or because pre-emption software is not in use in the BSC.

See figure Unsuccessful forced release.




001011: TCH REQUEST REJECTED DUE TO LACK

001141: TCH SEIZ FAILS DUE TO CONG

Operability class:

Related to feature:







Counter ID: 001059 Network element name: FOR HO ASSIGN REQ FAIL

DN9813827 71



3.61 001060 / QUE ALL ASSIGN REQ FAIL

Version: 4.0 NetAct name: FOR_HO_ASS_REQ_FAIL

Description: Number of rejected call attempt requests capable of doing a forced HO for a call in progress.


Reason for the impact: There is no suitable call for a forced handover in the cell or the pre-emption software is not in use in the BSC.

Updated: When the RRM rejects a TCH request for a call attempt which is capable of doing a forced handover for a call in progress. The high priority TCH request is rejected because of a lack of suitable calls for a forced handover or because the pre-emption software is not in use in the BSC.

See figure Unsuccessful forced handover.






Operability class:

Related to feature:







Counter ID: 001060 Network element name: QUE ALL ASSIGN REQ FAIL

Version: 4.0 NetAct name: QUE_ALL_ASS_REQ_FAIL

Description: Number of rejected call attempt requests with queuing allowed.


Reason for the impact: This may be because of queuing is not allowed in the BTS, or the request is removed from the queue because of expiry of a timer, or the request is replaced by a request with higher priority.

72 DN9813827




3.62 001061 / QUE NALL ASSIGN REQ FAIL

Updated: When the RRM rejects a TCH request for a call attempt which is allowed to queue.

See figures: - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation




Operability class:

Related to feature:







Counter ID: 001061 Network element name: QUE NALL ASSIGN REQ FAIL

Version: 4.0 NetAct name: QUE_NALL_ASS_REQ_FAIL

Description: Number of rejected call attempt requests with queuing not allowed.


Reason for the impact: There are no radio resources available.

Updated: When the RRM rejects a TCH request for a call attempt which is not allowed to queue.

See figures: - Basic call, no free TCH and queuing or directed retry is not allowed - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation






Operability class:

DN9813827 73



3.63 001062 / FOR REL HO REQ ATT

3.64 001063 / FOR HO HO REQ ATT

Related to feature:







Counter ID: 001062 Network element name: FOR REL HO REQ ATT

Version: 4.0 NetAct name: FOR_REL_HO_REQ_ATT

Description: Number of requests for a handover capable of doing a forced release for a call in progress.


Updated: When the RRM receives a TCH request for a handover attempt which is capable of doing a forced release for a call in progress.

See figure Unsuccessful forced release with external handover.





Operability class:

Related to feature:







Counter ID: 001063 Network element name: FOR HO HO REQ ATT

Version: 4.0 NetAct name: FOR_HO_HO_REQ_ATT

Description: Number of requests for a handover capable of doing a forced HO for a call in progress.


74 DN9813827




3.65 001064 / QUE ALL HO REQ ATT

Updated: When the RRM receives a TCH request for a handover attempt which is capable of doing a forced HO for a call in progress.

See figure Unsuccessful forced handover with external handover.





Operability class:

Related to feature:







Counter ID: 001064 Network element name: QUE ALL HO REQ ATT

Version: 4.0 NetAct name: QUE_ALL_HO_REQ_ATT

Description: Number of requests for a handover with queuing allowed.


Updated: When the RRM receives a TCH request for a handover attempt which is allowed to queue for radio resources.

See figures: - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target





Operability class:

Related to feature:




DN9813827 75



3.66 001065 / QUE NALL HO REQ ATT

3.67 001066 / FOR REL HO REQ FAIL




Counter ID: 001065 Network element name: QUE NALL HO REQ ATT

Version: 4.0 NetAct name: QUE_NALL_HO_REQ_ATT

Description: Number of requests for HO with queuing not allowed.


Updated: When the RRM receives a TCH request for a handover attempt which is not allowed to queue for radio resources.

See figures: - Successful internal intra-cell handover - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Successful internal inter-cell handover - Successful external handover, target





Operability class:

Related to feature:







Counter ID: 001066 Network element name: FOR REL HO REQ FAIL

Version: 4.0 NetAct name: FOR_REL_HO_REQ_FAIL

76 DN9813827




3.68 001067 / FOR HO HO REQ FAIL

Description: Number of rejected requests for a handover capable of doing a forced release for a call in progress.


Reason for the impact: There is no suitable call for release in the cell or the pre-emption software is not in use in BSC.

Updated: When the RRM rejects a TCH request for a handover attempt which is capable of doing a forced release for a call in progress. The high priority TCH request is rejected because of a lack of suitable calls for release or because the pre-emption software is not in use in the BSC.

See figure Unsuccessful forced release with external handover.





Operability class:

Related to feature:







Counter ID: 001067 Network element name: FOR HO HO REQ FAIL

Version: 4.0 NetAct name: FOR_HO_HO_REQ_FAIL

Description: Number of rejected requests for a handover capable of doing a forced HO for a call in progress.


Reason for the impact: There is no suitable call for a forced handover in the cell or the pre-emption software is not in use in the BSC.

Updated: When the RRM rejects a TCH request for a handover attempt which is capable of doing a forced handover for a call in progress. The high priority TCH request is rejected because of a lack of suitable calls for a forced handover or because the pre-emption software is not in use in the BSC.

See figure Unsuccessful forced handover with external handover.


DN9813827 77



3.69 001068 / QUE ALL HO REQ FAIL




Operability class:

Related to feature:







Counter ID: 001068 Network element name: QUE ALL HO REQ FAIL

Version: 4.0 NetAct name: QUE_ALL_HO_REQ_FAIL

Description: Number of the rejected requests for a handover with queuing allowed.


Reason for the impact: This may be because queuing is not allowed in the BTS, or the request is removed from the queue because of expiry of a timer, or the request is replaced by another with higher priority.

Updated: When the RRM rejects a TCH request for a handover attempt which is allowed to queue.






Operability class:

Related to feature:







78 DN9813827




3.70 001069 / QUE NALL HO REQ FAIL

3.71 001070 / FORCED RELEASES

Counter ID: 001069 Network element name: QUE NALL HO REQ FAIL

Version: 4.0 NetAct name: QUE_NALL_HO_REQ_FAIL

Description: Number of rejected requests for a handover with queuing not allowed.


Reason for the impact: There are no radio resources available.

Updated: When the RRM rejects a TCH request for a handover attempt which is not allowed to queue.

See figure Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed.




Operability class:

Related to feature:







Counter ID: 001070 Network element name: FORCED RELEASES

Version: 4.0 NetAct name: FORCED_RELEASES

Description: Number of forced releases.

Updated: When the RRM starts to terminate a call in progress forcefully by sending a release request to the Abis interface.

See figure Successful forced release.




Operability class:

Related to feature:



DN9813827 79



3.72 001071 / FORCED HANDOVERS

3.73 001072 / SDCCH ACT FAIL CALL





Counter ID: 001071 Network element name: FORCED HANDOVERS

Version: 4.0 NetAct name: FORCED_HANDOVERS

Description: Number of forced HOs.

Updated: When the RRM receives an acknowledgement from the Handover Attempt Supervisor of the Abis interface to its request for a forced HO.

See figure Successful forced handover.




Operability class:

Related to feature:







Counter ID: 001072 Network element name: SDCCH ACT FAIL CALL

Version: 4.1 NetAct name: SDCCH_ACT_FAIL_CALL

Description: Number of SDCCH transactions that are ended because of a failure in the activation of a channel during a call.


Reason for the impact: Abis Interface

80 DN9813827





3.75 001074 / SDCCH ACT FAIL TARGET

Updated: When an SDCCH transaction ends because of a failure to activate a channel in the BTS and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH activation.




Operability class:







Version: 4.0 NetAct name:






Operability class:






Counter ID: 001074 Network element name: SDCCH ACT FAIL TARGET

Version: 4.1 NetAct name: SDCCH_ACT_FAIL_NEW

DN9813827 81



3.76 001075 / SDCCH ABIS FAIL CALL

Description: Number of SDCCH transactions that are ended because of a failure to activate the target channel during an SDCCH HO.

Impact: HO failure and possibly call cleared


Updated: When an SDCCH transaction ends because of a failure to activate the target channel during a handover attempt and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH internal intra-cell handover, unsuccessful channel activation.




Operability class:

Related to feature:

BSC1003: SDCCH Handover






Counter ID: 001075 Network element name: SDCCH ABIS FAIL CALL

Version: 4.1 NetAct name: SDCCH_ABIS_FAIL_CALL

Description: Number of SDCCH transactions that are ended because of a failure in the Abis interface during a call in progress. There is no acknowledgement of channel activation, no indication of call establishment received, i.e., ghosts.



82 DN9813827




3.77 001076 / SDCCH ABIS FAIL SOURCE

Updated: When an SDCCH transaction ends because of signalling problems in the Abis interface and the RRM releases the SDCCH.


Reasons that trigger the counter: - Phantom RACHs that have a valid establishment cause. - The BTS can hear the MS, but the MS cannot hear the BTS, and so the MS does not respond to the IMMEDIATE ASSIGNMENT message with a SABM. - MS is accessing the network at the limit of sensitivity and messages are lost. - Poor Radio conditions. - MS is accessing network through another BTS (co-channel, co-BSIC interference).

See figures: - Unsuccessful SDCCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful SDCCH activation, timer expires while waiting for PHYSICAL_CONTEXT_CONFIRM message - TRX/TSL is blocked with different causes during an SDCCH channel activation




Operability class:






Counter ID: 001076 Network element name: SDCCH ABIS FAIL SOURCE

Version: 4.1 NetAct name: SDCCH_ABIS_FAIL_OLD

Description: Number of SDCCH transactions that are ended because of a failure in the Abis interface on the source channel during SDCCH-SDCCH or SDCCH-TCH HO.


Reason for the impact: External / Abis interface.

Updated: When an SDCCH transaction ends because of a failure in the Abis interface on the source channel during a handover and the RRM releases the SDCCH.


DN9813827 83



3.78 001077 / SDCCH ABIS FAIL TARGET




Operability class:

Related to feature:


BSS6115: Radio Channel Allocation Enhancements






Counter ID: 001077 Network element name: SDCCH ABIS FAIL TARGET

Version: 4.1 NetAct name: SDCCH_ABIS_FAIL_NEW

Description: Number of SDCCH transactions that are ended because of a failure in the Abis interface on the target channel during a handover.



Updated: When an SDCCH transaction ends because of a failure in the Abis interface on the target channel during a handover and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message.




Operability class:

Related to feature:







84 DN9813827




3.79 001078 / SDCCH A IF FAIL CALL

3.80 001079 / SDCCH A IF FAIL SOURCE

Counter ID: 001078 Network element name: SDCCH A IF FAIL CALL

Version: 4.1 NetAct name: SDCCH_A_IF_FAIL_CALL

Description: Number of SDCCH transactions ended because of a failure in the A inter-face during a call attempt.


Reason for the impact: External / A interface. There may be a failure in the SDCCH signalling connection.

Updated: When an SDCCH transaction ends because of signalling problems in the A interface during a call attempt and the RRM releases the SDCCH.


See figure SDCCH assignment failure.




Operability class:






Counter ID: 001079 Network element name: SDCCH A IF FAIL SOURCE

Version: 4.1 NetAct name: SDCCH_A_IF_FAIL_OLD

Description: Number of SDCCH transactions ended because of a failure in the A inter-face on the source channel during an SDCCH-SDCCH or SDCCH-TCH HO.



DN9813827 85



3.81 001080 / SDCCH A IF FAIL TARGET

Updated: When an SDCCH transaction ends because of signalling problems in the A interface during an SDCCH-SDCCH or SDCCH-TCH HO and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH external handover, timer expires while waiting for CLEAR_COMMAND message.




Operability class:

Related to feature:


BSC1004: Directed Retry






Counter ID: 001080 Network element name: SDCCH A IF FAIL TARGET

Version: 4.1 NetAct name: SDCCH_A_IF_FAIL_NEW

Description: Number of SDCCH transactions ended because of a failure in the A inter-face on the target channel during an SDCCH HO.



Updated: When an SDCCH transaction ends because of signalling problems in the A interface during an SDCCH HO and the RRM releases the SDCCH.


See figure Unsuccessful SDCCH external handover, timer expires while waiting for CLEAR_COMMAND message




Operability class:

86 DN9813827




3.82 001081 / TCH ACT FAIL CALL


Related to feature:







Counter ID: 001081 Network element name: TCH ACT FAIL CALL

Version: 4.1 NetAct name: TCH_ACT_FAIL_CALL

Description: Number of TCH transactions that are ended because of a failure to activate a channel during a call attempt.


Updated: When a TCH transaction ends because of a failure to activate a channel in the BTS and the RRM releases the TCH.


See figure Unsuccessful TCH activation.




Operability class:












DN9813827 87



3.84 001083 / TCH ACT FAIL TARGET

3.85 001084 / TCH ABIS FAIL CALL


Operability class:






Counter ID: 001083 Network element name: TCH ACT FAIL TARGET

Version: 4.1 NetAct name: TCH_ACT_FAIL_NEW

Description: Number of TCH transactions that are ended because of a failure to activate the target channel during an SDCCH-TCH or TCH-TCH HO.


Reason for the impact: The RRM receives the CHANNEL_ACTIVATION_NACK message.

Updated: When a TCH transaction ends because of a failure to activate the target channel during a TCH HO attempt and the RRM releases the TCH.


See figure Unsuccessful internal inter-cell handover.




Operability class:






Counter ID: 001084 Network element name: TCH ABIS FAIL CALL

Version: 4.1 NetAct name: TCH_ABIS_FAIL_CALL

88 DN9813827




3.86 001085 / TCH ABIS FAIL SOURCE

Description: Number of TCH transactions ended because of a failure in the Abis inter-face during a call in progress.



The signalling problems may include missing acknowledgement of channel activation, missing indication of call establishment, receipt of an error indication, corrupted mes-sages, missing measurement results from the BTS, excessive timing advance or some internal reasons. These failures can also contain situations when the timer T3109 expires in a BSC in call release phase while waiting for the Release Indication. The MS subscriber does not see these failures caused by the T3109 expiry as real drop calls.

Updated: When a TCH transaction ends because of signalling problems in the Abis interface and the RRM releases the TCH.


See figures: - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TRX or TSL is blocked with different causes during a call - Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:






Counter ID: 001085 Network element name: TCH ABIS FAIL SOURCE

Version: 4.1 NetAct name: TCH_ABIS_FAIL_OLD

DN9813827 89



3.87 001086 / TCH ABIS FAIL NEW

Description: Number of TCH transactions ended because of a failure in the Abis inter-face on the source channel during a TCH HO.



Updated: When a TCH transaction ends because of a failure in the Abis interface on the source channel during a TCH HO and the RRM releases the TCH.





Operability class:






Counter ID: 001086 Network element name: TCH ABIS FAIL NEW

Version: 4.1 NetAct name: TCH_ABIS_FAIL_NEW

Description: Number of TCH transactions ended because of a failure in the Abis inter-face on the new channel during a TCH handover.



Updated: When a TCH transaction ends because of a failure in the Abis interface on the new channel during a TCH handover and the RRM releases the TCH.


See figure Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message.




Operability class:


90 DN9813827




3.88 001087 / TCH A IF FAIL CALL

3.89 001088 / TCH A IF FAIL SOURCE





Counter ID: 001087 Network element name: TCH A IF FAIL CALL

Version: 4.1 NetAct name: TCH_A_IF_FAIL_CALL

Description: Number of TCH transactions ended because of a failure in the A interface during a call in progress.


Reason for the impact: External / A interface. The signalling problems may include the CLEAR_COMMAND message from the MSC during the call setup phase before the MSC receives an indication of the completion of the assignment from the MS and the ABNORMAL_CLEAR_ RECEIVED_DUE_TO_A_INTERFACE message (reset circuit, SCCP cleared by RLSD).

Updated: When a TCH transaction ends because of signalling problems in the A inter-face during a call and the RRM releases the TCH.


See figure TCH assignment failure, MSC sends CLEAR_COMMAND message.




Operability class:






Counter ID: 001088 Network element name: TCH A IF FAIL SOURCE

Version: 4.1 NetAct name: TCH_A_IF_FAIL_OLD

DN9813827 91



3.90 001089 / TCH A IF FAIL NEW

Description: Number of TCH transactions ended because of a failure in the A interface on the source channel during a handover attempt.



Updated: When a TCH transaction ends because of an A interface failure (HO failure) on the source channel during a TCH HO attempt and the RRM releases the TCH.

This counter is updated in the source cell. If the target cell lies within the same BSC, also counter 001015 in the target cell is updated along with this counter.

This counter is also updated if the MS fails to return to the old channel during an inter-BSC handover.

This counter is updated in phases 9-11 only.

See figure Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message.




001015: TRANSACTIONS ENDED DUE TARGET CHANNEL FAIL

Operability class:






Counter ID: 001089 Network element name: TCH A IF FAIL NEW

Version: 4.1 NetAct name: TCH_A_IF_FAIL_NEW

Description: Number of TCH transactions ended because of a failure in the A interface on the new channel during a handover attempt.



92 DN9813827




3.91 001090 / TCH REQ UND OVER

Updated: When a TCH transaction ends because of a failure in the A interface (HO failure) on the new channel during a handover attempt and the RRM releases the TCH.


See figure Unsuccessful external handover, MS sends a handover failure.




Operability class:






Counter ID: 001090 Network element name: TCH REQ UND OVER

Version: 4.1 NetAct name: TCH_REQUEST_UND_OVER

Description: Number of TCH requests for an underlay-overlay HO. Updated only for the normal coverage area.

Counter 001010 TCH REQUEST SUCCESS AND UNSUCCESS is updated along with this counter.

Updated: When the RRM receives a TCH request for an underlay overlay HO.

See figures:- Successful internal intra-cell handover- Internal intra-cell HO, successful TCH queuing- Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed- Internal directed retry- Successful internal inter-cell handover





Operability class:

DN9813827 93



3.92 001091 / TCH SEIZ UND OVER

3.93 001092 / TCH REJ REQ UND OVE

Related to feature:


BSC4016: Intelligent Underlay-Overlay






Counter ID: 001091 Network element name: TCH SEIZ UND OVER

Version: 4.1 NetAct name: TCH_SEIZ_UND_OVER

Description: Number of TCH seizures for an underlay-overlay HO.

Counter 001008 SUCCESS TCH SEIZURE FOR HO is updated along with this counter.

Updated: When the RRM allocates a TCH as a response to a TCH request for an underlay-overlay HO. Updated only for the normal coverage area.

See figures:- Successful internal intra-cell handover- Internal intra-cell HO, successful TCH queuing- Successful internal inter-cell handover





Operability class:

Related to feature:








Counter ID: 001092 Network element name: TCH REJ REQ UND OVE

94 DN9813827




3.94 001093 / SUCC MOC TEST CALL

Version: 4.1 NetAct name: TCH_REJ_UND_OVER

Description: Number of TCH requests for an underlay-overlay HO rejected because of a lack of resources.

Counter 001011 TCH REQUEST REJECTED DUE TO LACK is updated along with this counter.

Updated: When the RRM rejects a TCH request for an underlay-overlay HO because of lack of resources. Updated only for the normal coverage area.

See figure Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed.





Operability class:

Related to feature:








Counter ID: 001093 Network element name: SUCC MOC TEST CALL

Version: 4.0 NetAct name: SUCC_MOC_TEST_CALL

Description: Number of successful MOC test calls during a scheduled test.

Updated: When the RRM receives a message from the BTTEST.




Operability class:

Related to feature:

BSC4531: BTS Testing: Scheduled MOC





DN9813827 95



3.95 001094 / FAIL MOC TEST CALL

3.96 001095 / PRI SUBSCR TCH REQ


Counter ID: 001094 Network element name: FAIL MOC TEST CALL

Version: 4.0 NetAct name: FAIL_MOC_TEST_CALL

Description: Number of unsuccessful MOC test calls during a scheduled test.

Updated: When the RRM receives a message from the BTTEST.




Operability class:

Related to feature:

BSC4531: BTS Testing: Scheduled MOC






Counter ID: 001095 Network element name: PRI SUBSCR TCH REQ

Version: 4.0 NetAct name: TCH_PRI_SUBSCR_REQ

Description: Number of TCH requests of the type priority subscriber.


Updated: When the RRM receives a TCH request either in a call or HO attempt and the MS priority level in the priority information element (PIE) indicates that the MS is a priority subscriber.

See figures:- Basic call with priority subscriber- Unsuccessful forced release- Unsuccessful forced release with external handover- Unsuccessful forced handover- Unsuccessful forced handover with external handover





96 DN9813827




3.97 001096 / PRI SUBSCR SUCC TCH SEIZ

3.98 001097 / NO PRI SUBSCR REFUSED TCH REQ

Operability class:

Related to feature:

BSS5190: Enhanced Trunk Reservation






Counter ID: 001096 Network element name: PRI SUBSCR SUCC TCH SEIZ

Version: 4.0 NetAct name: TCH_PRI_SUBSCR_SUCC_SEIZ

Description: Number of successful TCH seizures of the type priority subscriber.

Counter 001008 or 001009 is updated along with this counter.

Updated: When the RRM allocates a TCH as a response to a TCH request in either a call or HO attempt and the MS priority level in the priority information element (PIE) indicates that the MS is a priority subscriber.

See figure Basic call with priority subscriber.






Operability class:

Related to feature:







Counter ID: 001097 Network element name: NO PRI SUBSCR REFUSED TCH REQ

Version: 4.0 NetAct name: TCH_NO_PRI_SUBSCR_REFUSED_REQ

DN9813827 97



3.99 001098 / TCH SEIZ ATT DUE SDCCH CON

Description: Number of TCH requests of the type non-priority subscriber that are rejected because there are no resources available to subscribers other than priority subscribers.


Updated: When the RRM rejects a TCH request because of no resources available to subscribers other than priority subscribers.





001042: TRUNK RES INVOC RES REFUSED

Operability class:

Related to feature:







Counter ID: 001098 Network element name: TCH SEIZ ATT DUE SDCCH CON

Version: 4.0 NetAct name: TCH_SEIZ_ATT_DUE_SDCCH_CON

Description: Number of attempts to seize a TCH because of SDCCH congestion.


Updated: When the RRM attempts to allocate a TCH as a response to a request for an SDCCH seizure during SDCCH congestion. The RRM does this if the TCH alloca-tion (=FACCH setup) is allowed in the message carrying the request for the SDCCH seizure.

See figures: - FACCH call setup due to SDCCH congestion with counters - FACCH call setup because of SDCCH congestion



98 DN9813827




3.100 001099 / TCH SEIZ DUE SDCCH CON



001043: TCH REQ FACCH CALLSET

Operability class:

Related to feature:







Counter ID: 001099 Network element name: TCH SEIZ DUE SDCCH CON

Version: 4.0 NetAct name: TCH_SEIZ_DUE_SDCCH_CON

Description: Number of successful TCH seizures because of congestion on the SDCCH.

This counter is updated along with counter 001044.

Updated: When the RRM allocates a TCH as a response to a request for SDCCH seizure during congestion on the SDCCHs. The RRM allocates a TCH if the TCH allo-cation (=FACCH setup) is allowed in the message carrying the request for the SDCCH seizure.





001044: TCH SEIZ FACCH CALL SET

Operability class:

Related to feature:







DN9813827 99



3.101 001100 / TRUNK TCH REJECTED FR REQ

3.102 001101 / TRUNK TCH REJECTED HR REQ

Counter ID: 001100 Network element name: TRUNK TCH REJECTED FR REQ

Version: 4.0 NetAct name: TCH_TRUNK_REFUSED_FR_REQ

Description: Number of requests for trunk reservation function that result in the rejec-tion of TCH allocation when FR or preferred FR TCH has been requested.


Updated: When the RRM denies access by applying the trunk reservation function and FR or preferred FR TCH has been requested.






Operability class:

Related to feature:


BSS5010: Half Rate






Counter ID: 001101 Network element name: TRUNK TCH REJECTED HR REQ

Version: 4.0 NetAct name: TCH_TRUNK_REFUSED_HR_REQ

Description: Number of requests for trunk reservation function that result in rejection of TCH allocation when HR or preferred HR TCH has been requested.


Updated: When the RRM denies access by applying the trunk reservation function and HR or preferred HR TCH has been requested.




100 DN9813827




3.103 001102 / FULL TCH REQ SUCC UNSUCC



Operability class:

Related to feature:


BSS5010: Half Rate






Counter ID: 001102 Network element name: FULL TCH REQ SUCC UNSUCC

Version: 4.0 NetAct name: TCH_FULL_REQ_SUCC_UNSUCC

Description: Number of requests for FR TCH (both successful and unsuccessful).


DN9813827 101



3.104 001103 / HALF TCH REQ SUCC UNSUCC

Updated: When the RRM receives a TCH request either in a call or in a handover attempt and FR TCH channel is requested.

NOTE! This counter is updated when the channel rate of the requested TCH is defined to be FR only; the type of the TCH may be limited either by an assignment request or a handover request from the A interface, or it may be because of the BSC restricting the selection of channel type in TCH allocation.

See figures: - Basic call with counters - Basic call with priority subscriber - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover





Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001103 Network element name: HALF TCH REQ SUCC UNSUCC

102 DN9813827




Version: 4.0 NetAct name: TCH_HALF_REQ_SUCC_UNSUCC

Description: Number of requests for HR TCH requests (both successful and unsuc-cessful).


Updated: When the RRM receives a TCH request either in a call or HO attempt and HR TCH channel is requested. NOTE! This counter is updated when the channel rate of the requested TCH is defined to be HR only; the type of the TCH may be limited either by an assignment request or a handover request from the A interface, or it may be because of the BSC restricting the selection of channel type in TCH allocation.

See figures: - Basic call with counters - Basic call with priority subscriber - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover





Operability class:

Related to feature:

BSS5010: Half Rate






DN9813827 103



3.105 001104 / TCH REQ FULL PREFERRED

Counter ID: 001104 Network element name: TCH REQ FULL PREFERRED

Version: 4.0 NetAct name: TCH_FULL_REQ_PREFERRED

Description: Number of TCH requests with FR preferred (both successful and unsuc-cessful).


Updated: When the RRM receives a TCH request either in a call or HO attempt and FR or HR TCH channel is requested alternatively with FR preferred.

NOTE! The preferred channel rate can be defined either by an assignment request or HO request received from the A interface or by software which is activated on the BSC for controlling the selection of the channel type in TCH allocation. In the latter case the preferred channel type can be quite the opposite to the one initially set by the MSC.

See figures: - Basic call with counters - Basic call with priority subscriber - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover





Operability class:

Related to feature:

BSS5010: Half Rate


104 DN9813827




3.106 001105 / TCH REQ HALF PREFERRED





Counter ID: 001105 Network element name: TCH REQ HALF PREFERRED

Version: 4.0 NetAct name: TCH_HALF_REQ_PREFERRED

Description: Number of TCH requests with HR preferred (both successful and unsuc-cessful).


Updated: When the RRM receives a TCH request either in a call or HO attempt and FR or HR TCH channel is requested alternatively with HR preferred.

NOTE! The preferred channel rate can be defined either by assignment request or HO request received from the A interface or by softwares which are activated on the BSC for controlling the selection of the channel type in TCH allocation. In the latter case the preferred channel type can be quite the opposite to the one initially set by the MSC.

See figures: - Basic call with counters - Basic call with priority subscriber - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover



DN9813827 105



3.107 001106 / SUCC FULL TCH SEIZ



Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001106 Network element name: SUCC FULL TCH SEIZ

Version: 4.0 NetAct name: TCH_FULL_SUCC_SEIZ

Description: Number of successful FR TCH seizures.

Either counter 001008 or counter 001009 is updated along with this counter.

Updated: When the RRM allocates an FR TCH as a response to a TCH request.

See figures: - Basic call with counters - Basic call with priority subscriber - Successful TCH queuing - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Successful forced handover






Operability class:

Related to feature:

BSS5010: Half Rate





106 DN9813827




3.108 001107 / SUCC HALF TCH SEIZ

3.109 001108 / FULL TCH SEIZ SPEECH VER 1


Counter ID: 001107 Network element name: SUCC HALF TCH SEIZ

Version: 4.0 NetAct name: TCH_HALF_SUCC_SEIZ

Description: Number of successful HR TCH seizures.

Either counter 001008 or counter 001009 is updated along with this counter.

Updated: When the RRM allocates an HR TCH as a response to a TCH request.

See figures: - Basic call with counters - Basic call with priority subscriber - Successful TCH queuing - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Successful internal inter-cell handover - Successful external handover, target - Successful forced release - Successful forced handover






Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001108 Network element name: FULL TCH SEIZ SPEECH VER 1

Version: 4.0 NetAct name: TCH_FULL_SEIZ_SPEECH_VER1

Description: Number of successful FR TCH seizures when speech FR version 1 is in use.

DN9813827 107




Updated: When an FR TCH allocated for speech is released and the FR codec version 1 is in use.

See figures: - Normal release - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message- Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel- Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared - Unsuccessful internal inter-cell handover - Successful external handover, source - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Successful forced release - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT- Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:

Related to feature:

BSS5010: Half Rate








108 DN9813827







See figures: - Normal release - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message- TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message- Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel- Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared- Unsuccessful internal inter-cell handover - Successful external handover, source - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message- Unsuccessful external handover, MS sends a handover failure - Successful forced release - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT- Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:

Related to feature:

BSS5010: Half Rate







DN9813827 109






See figures: - Normal release - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message- TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message- CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel- Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared- Unsuccessful internal inter-cell handover - Successful external handover, source - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message- Unsuccessful external handover, MS sends a handover failure - Successful forced release - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message- Dropped call between ASSIGNMENT COMPLETE and DISCONNECT- Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:

Related to feature:

BSS5010: Half Rate






110 DN9813827




3.112 001111 / HALF TCH SEIZ SPEECH VER 1

Counter ID: 001111 Network element name: HALF TCH SEIZ SPEECH VER 1

Version: 4.0 NetAct name: TCH_HALF_SEIZ_SPEECH_VER1

Description: Number of successful HR TCH seizures when speech FR version 1 is in use.

Updated: When an HR TCH allocated for speech is released and the HR codec version 1 is in use.

See figures: - Normal release - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel - Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared - Unsuccessful internal inter-cell handover - Successful external handover, source - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Successful forced release - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT - Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:

Related to feature:

BSS5010: Half Rate






DN9813827 111







Description: This counter is not in use.

Updated: This counter is not updated.




Operability class:

Related to feature:

BSS5010: Half Rate








Description: Number of successful HR TCH seizures when speech FR version 3 is in use.

112 DN9813827




3.115 001114 / FULL TCH SEIZ NORM ASSIGNMENT

Updated: When an HR TCH allocated for speech is released and the HR codec version 3 is in use.

See figures: - Normal release - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel - Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared - Unsuccessful internal inter-cell handover - Successful external handover, source - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Successful forced release - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message - Dropped call between ASSIGNMENT COMPLETE and DISCONNECT - Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001114 Network element name: FULL TCH SEIZ NORM ASSIGNMENT

Version: 4.0 NetAct name: TCH_FULL_SEIZ_NORM_ASS

DN9813827 113



3.116 001115 / HALF TCH SEIZ NORM ASSIGNMENT

Description: Number of successful FR TCH seizures for a normal assignment.


Updated: When the RRM allocates an FR TCH as a response to a TCH request in a call attempt.






Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001115 Network element name: HALF TCH SEIZ NORM ASSIGNMENT

Version: 4.0 NetAct name: TCH_HALF_SEIZ_NORM_ASS

Description: Number of successful HR TCH seizures for a normal assignment.


Updated: When the RRM allocates an HR TCH as a response to a TCH request in a call attempt.



114 DN9813827




3.117 001116 / FULL TCH SEIZ INT HO CH RATE




Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001116 Network element name: FULL TCH SEIZ INT HO CH RATE

Version: 4.0 NetAct name: TCH_FULL_SEIZ_INT_HO_CH_RATE

Description: Number of successful FR TCH seizures for an internal HO when the channel rate changes.


Updated: When the RRM allocates an FR TCH for an internal HO as a response to a TCH request and the channel rate is changed from HR to FR.






001106: SUCC FULL TCH SEIZ

Operability class:

Related to feature:

BSS5010: Half Rate






DN9813827 115



3.118 001117 / HALF TCH SEIZ INT HO CH RATE

3.119 001118 / REJ TCH REQ DUE LACK FR

Counter ID: 001117 Network element name: HALF TCH SEIZ INT HO CH RATE

Version: 4.0 NetAct name: TCH_HALF_SEIZ_INT_HO_CH_RATE

Description: Number of successful HR TCH seizures for an internal HO when the channel rate changes.


Updated: When the RRM allocates an HR TCH for an internal HO as a response to a TCH request and the channel rate is changed from FR to HR.






001107: SUCC HALF TCH SEIZ

Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001118 Network element name: REJ TCH REQ DUE LACK FR

Version: 4.0 NetAct name: TCH_REJ_REQ_DUE_LACK_FR

Description: Number of TCH requests that are rejected because of a lack of resources when FR or preferred FR TCH is requested.


116 DN9813827




3.120 001119 / REJ TCH REQ DUE LACK HR

Updated: When no TCHs are available when requested from the RRM either in a call or HO attempt and either FR or preferred FR TCH was requested. The counter may be updated immediately after the TCH request or, in case of queuing, after the queuing timer expires.

See figures: - Basic call, no free TCH and queuing or directed retry is not allowed - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Unsuccessful forced release - Unsuccessful forced release with external handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover





Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001119 Network element name: REJ TCH REQ DUE LACK HR

Version: 4.0 NetAct name: TCH_REJ_REQ_DUE_LACK_HR

Description: Number of TCH requests that are rejected because of a lack of resources, when HR or preferred HR TCH is requested.


DN9813827 117



3.121 001120 / FULL TCH REJ DUE HR TRAF

Updated: When no TCHs are available when requested from the RRM either in a call or HO attempt and either HR or preferred HR TCH was requested. The counter may be updated immediately after the TCH request or, in case of queuing after the queuing, timer expires.

See figures: - Basic call, no free TCH and queuing or directed retry is not allowed - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Unsuccessful forced release - Unsuccessful forced release with external handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover





Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001120 Network element name: FULL TCH REJ DUE HR TRAF

Version: 4.0 NetAct name: TCH_FULL_REJ_DUE_HR_TRAF

Description: Number of requests for FR TCHs that are rejected because of HR traffic, whether queuing occurred or not.

118 DN9813827




3.122 001121 / HALF TCH REJ DUE FR TRAF

Updated: When no FR TCH is available in a situation where HR calls are being main-tained in DR TSLs and there are free HR TCHs among the DR or permanent HR resources for at least two HR calls.

NOTE! The counter is incremented on receipt of the request for the FR TCH, regard-less of whether the request is set in the queue, pre-empted, subjected to directed retry or some other procedure of the kind.

See figures: - FACCH call setup due to SDCCH congestion, no free TCH channel - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover




Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001121 Network element name: HALF TCH REJ DUE FR TRAF

Version: 4.0 NetAct name: TCH_HALF_REJ_DUE_FR_TRAF

Description: Number of requests for HR TCHs that are rejected because of FR traffic, whether queuing occurred or not.

DN9813827 119



3.123 001122 / TCH REJ DUE REQ CH A IF CRC

Updated: When no HR TCH is available in a situation where a FR call is being main-tained in a DR TSL and at the same time there is a permanent FR type TSL free.

NOTE! The counter is incremented on receipt of the request for HR TCH, regardless of whether the request is set in the queue, pre-empted, subjected to directed retry or some other procedure of the kind

See figures: - FACCH call setup due to SDCCH congestion, no free TCH channel - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - Unsuccessful trunk reservation - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Successful forced release - Unsuccessful forced release - Unsuccessful forced release with external handover - Successful forced handover - Unsuccessful forced handover - Unsuccessful forced handover with external handover




Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001122 Network element name: TCH REJ DUE REQ CH A IF CRC

Version: 4.0 NetAct name: TCH_REJ_DUE_REQ_CH_A_IF_CRC

Description: Number of requests for TCHs that are rejected because of a mismatch between the types of the requested channel and the A interface circuit, whether queuing occurred or not.

Counter 001011 and counter 001118 or 001119 are updated along with this counter.

120 DN9813827




3.124 001123 / FULL TCH REQ FACCH CALL

Updated: When the RRM changes the A interface circuit pool before TCH allocation.

See figure TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed.





001118: REJ TCH REQ DUE LACK FR

001119: REJ TCH REQ DUE LACK HR

Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001123 Network element name: FULL TCH REQ FACCH CALL

Version: 4.0 NetAct name: TCH_FULL_REQ_FAST_CALL

Description: Number of requests for FR TCH in FACCH call setup during SDCCH con-gestion (both successful and unsuccessful).


Updated: When the RRM receives a request for SDCCH allocation but no idle SDCCHs exist and TCH allocation (=FACCH call setup) is allowed in the request which also indicates that the TCH rate should be FR.

See figures: - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel







Operability class:

DN9813827 121



3.125 001124 / TCH FACCH CALL CH RATE NOT DEF

Related to feature:

BSS5010: Half Rate






Counter ID: 001124 Network element name: TCH FACCH CALL CH RATE NOT DEF

Version: 4.0 NetAct name: TCH_FAST_CALL_CH_RATE_NOT_DET

Description: Number of requests for TCHs in FACCH call setup during SDCCH con-gestion when the TCH rate is not defined to be uniquely FR or HR (both successful and unsuccessful).


Updated: When the RRM receives a request for SDCCH allocation but no idle SDCCHs exist and TCH allocation (=FACCH call setup) is allowed in the request which also indicates that either of the two possible channel rates is accepted to be allocated.

See figures: - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel







Operability class:

Related to feature:

BSS5010: Half Rate






122 DN9813827




3.126 001125 / SUCC FULL TCH SEIZ FACCH CALL

3.127 001126 / SUCC HALF TCH SEIZ FACCH CALL

Counter ID: 001125 Network element name: SUCC FULL TCH SEIZ FACCH CALL

Version: 4.0 NetAct name: TCH_SUCC_FULL_SEIZ_FAST_CALL

Description: Number of successful FR TCHs seizures for a FACCH call setup.


Updated: When the RRM allocates an FR TCH as a response to an SDCCH request as part of the FACCH call setup during SDCCH congestion.






Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001126 Network element name: SUCC HALF TCH SEIZ FACCH CALL

Version: 4.0 NetAct name: TCH_SUCC_HALF_SEIZ_FAST_CALL

Description: Number of successful HR TCHs seizures for a FACCH call setup.


Updated: When the RRM allocates an HR TCH as a response to an SDCCH request as part of the FACCH call setup during SDCCH congestion.






DN9813827 123



3.128 001127 / ENDED DUE TRANSC FR RATE 1


Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001127 Network element name: ENDED DUE TRANSC FR RATE 1

Version: 4.0 NetAct name: TCH_ENDED_DUE_TRANSC_FR_RATE1

Description: Number of radio TCH transactions that are ended because of a transcoder failure when speech FR version 1 is in use.

Updated: When one of the transcoder failure counters 001029, 001030 or 001031 is updated and the FR codec version 1 is in use.

See figures: - CONNECTION_FAILURE message with cause transcoder_failure during a call - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel




Operability class:

Related to feature:

BSS5010: Half Rate








124 DN9813827











Operability class:

Related to feature:

BSS5010: Half Rate














Operability class:

Related to feature:

BSS5010: Half Rate


DN9813827 125



3.131 001130 / ENDED DUE TRANSC HR RATE 1






Counter ID: 001130 Network element name: ENDED DUE TRANSC HR RATE 1

Version: 4.0 NetAct name: TCH_ENDED_DUE_TRANSC_HR_RATE1

Description: Number of radio TCH transactions that are ended because of a transcoder failure when speech HR version 1 is in use.

Updated: When one of the transcoder failure counters 001029, 001030 or 001031 is updated and the HR codec version 1 is in use.





Operability class:









126 DN9813827










Operability class:

Related to feature:

BSS5010: Half Rate










See figures:- CONNECTION_FAILURE message with cause transcoder_failure during a call- Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel




Operability class:

Related to feature:

BSS5010: Half Rate




DN9813827 127



3.134 001133 / FULL TCH TR FAIL



Counter ID: 001133 Network element name: FULL TCH TR FAIL

Version: 4.0 NetAct name: TCH_FULL_TR_FAIL

Description: Total number of FR TCH transaction failures.

Updated: When an FR TCH transaction ends because of any abnormal reason, that is, some specific failure counter has been updated, and the RRM releases the FR TCH.

See figures: - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel - Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared - Unsuccessful internal inter-cell handover - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message




Operability class:

Related to feature:

BSS5010: Half Rate






128 DN9813827




3.135 001134 / HALF TCH TR FAIL

3.136 001135 / SDCCH SEIZ ATT FOR MOC

Counter ID: 001134 Network element name: HALF TCH TR FAIL

Version: 4.0 NetAct name: TCH_HALF_TR_FAIL

Description: Total number of HR TCH transaction failures.

Updated: When an HR TCH transaction ends because of any abnormal reason, that is, some specific failure counter has been updated, and the RRM releases the HR TCH.

See figures: - Unsuccessful TCH activation - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure - TCH assignment failure, MSC sends CLEAR_COMMAND message - CONNECTION_FAILURE message with cause transcoder_failure during a call - TRX or TSL is blocked with different causes during a call - Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel - Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared - Unsuccessful internal inter-cell handover - Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message - Unsuccessful external handover, MS sends a handover failure - Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message




Operability class:

Related to feature:

BSS5010: Half Rate






Counter ID: 001135 Network element name: SDCCH SEIZ ATT FOR MOC

Version: 4.0 NetAct name: SDCCH_MOC_SEIZ_ATT

DN9813827 129



3.137 001136 / SDCCH SEIZ ATT FOR MTC

Description: Number of SDCCH seizure attempts for an MOC.


Updated: When a request for a SDCCH is received from an MS as the MS needs a channel for an MOC. Note that this counter contains all requests for an SDCCH in originating direction, for example Mobile Originating calls, Location Updates, Supple-mentary Service requests and SMS on SDCCH.

In case of an SMS, this counter is triggered even if the SMS would eventually be sent on TCH instead of SDCCH.

In case of an external handover and handovers after external handover, this counter is not updated. In case of an intra-cell or inter-cell (SDCCH to SDCCH) handover, this counter is updated.

See figures: - Basic call with counters - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel - SDCCH congestion, FACCH call setup is not activated - Successful SDCCH internal intra-cell handover - Successful SDCCH internal inter-cell handover - Reconfiguration from TCH to SDCCH




001000: SEIZURE ATTEMPTS

Operability class:






Counter ID: 001136 Network element name: SDCCH SEIZ ATT FOR MTC

Version: 4.0 NetAct name: SDCCH_MTC_SEIZ_ATT

Description: Number of SDCCH seizure attempts for an MTC.


130 DN9813827




3.138 001137 / TCH SEIZ ATT FOR MOC

Updated: When a request for a SDCCH is received from an MS as the MS needs a channel for an MTC. Note that this counter contains all requests for an SDCCH in ter-minating direction, for example Mobile Terminating calls and SMS on SDCCH.

In case of an SMS, this counter is triggered even if the SMS would eventually be sent on TCH instead of SDCCH.

In case of an external handover and handovers after external handover this counter is not incremented. In case of an intra-cell or inter-cell (SDCCH to SDCCH) handover this counter is updated.

See figures: - Basic call with counters - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel - SDCCH congestion, FACCH call setup is not activated - Successful SDCCH internal intra-cell handover - Successful SDCCH internal inter-cell handover - Reconfiguration from TCH to SDCCH





Operability class:






Counter ID: 001137 Network element name: TCH SEIZ ATT FOR MOC

Version: 4.0 NetAct name: TCH_MOC_SEIZ_ATT

Description: Number of TCH seizure attempts during an MOC, in call setup phase before connection acknowledgement. In case of an external handover and handovers after external handover this counter is not incremented. In case of an intra-cell or inter-cell (TCH to TCH or SDCCH to TCH) handover this counter is updated.


DN9813827 131



3.139 001138 / TCH SEIZ ATT FOR MTC

Updated: When RRM receives requests for a TCH for an MOC. In FACCH call setup RRM attempts to allocate a TCH as a response to a request for an SDCCH seizure during SDCCH congestion.

See figures: - Basic call with counters - Basic call with priority subscriber - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful forced release - Unsuccessful forced release - Successful forced handover - Unsuccessful forced handover





Operability class:






Counter ID: 001138 Network element name: TCH SEIZ ATT FOR MTC

Version: 4.0 NetAct name: TCH_MTC_SEIZ_ATT

132 DN9813827




Description: Number of TCH seizure attempts during an MTC, in call setup phase before connection acknowledgement. In case of an external handover and handovers after external handover this counter is not incremented. In case of an intra-cell or inter-cell (TCH to TCH or SDCCH to TCH) handover this counter is updated.


Updated: When RRM receives requests for a TCH for an MTC. In FACCH call setup RRM attempts to allocate a TCH as a response to a request for an SDCCH seizure during SDCCH congestion.

See figures: - Basic call with counters - Basic call with priority subscriber - FACCH call setup due to SDCCH congestion with counters - FACCH call setup due to SDCCH congestion, no free TCH channel - Basic call, no free TCH and queuing or directed retry is not allowed - Successful TCH queuing - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful trunk reservation - Successful internal intra-cell handover - Internal intra-cell HO, successful TCH queuing - Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed - Internal intra-cell handover, unsuccessful TCH queuing - Internal directed retry - Successful internal inter-cell handover - Successful forced release - Unsuccessful forced release - Successful forced handover - Unsuccessful forced handover





Operability class:






DN9813827 133



3.140 001139 / TCH REL BECAUSE OF RADIO FAIL

3.141 001140 / TCH REL DUE TO BSS FAIL

Counter ID: 001139 Network element name: TCH REL BECAUSE OF RADIO FAIL

Version: 4.1 NetAct name: TCH_REL_DUE_RADIO_FAIL

Description: Number of TCH releases because of radio failures, in call setup phase before connection acknowledgement. This counter is also updated in an intra-cell or inter-cell handover, if the TCH is released because of a radio failure before the con-versation phase (handover is started and it fails before a connection acknowledge-ment message is received).


Updated: When a TCH is released because of a radio failure.

This counter is updated in call phases 2, 3, 5, or 8-14 only.

See figure Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message.




001013: TRANSACTIONS ENDED DUE RADIO FAIL

Operability class:






Counter ID: 001140 Network element name: TCH REL DUE TO BSS FAIL

Version: 4.1 NetAct name: TCH_REL_DUE_BSS_FAIL

Description: Number of TCH releases because of BSS failures, in call setup phase before connection acknowledgement. This counter is also updated in intra-cell or inter-cell handover, if the TCH is released because of BSS problems before conver-sation phase (handover is started and fails before connection acknowledgement message is received).


134 DN9813827




3.142 001141 / TCH SEIZ FAILS DUE TO CONG

Updated: When a TCH is released because of BSS problems.

This counter is updated in call phases 2, 3, 5, or 8-14 only.

See figures: - Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message - TCH assignment failure, MSC sends CLEAR_COMMAND message




001012: TRANSACTIONS ENDED DUE TO BSS PROBLEM

Operability class:






Counter ID: 001141 Network element name: TCH SEIZ FAILS DUE TO CONG

Version: 4.0 NetAct name: TCH_SEIZ_FAILS_DUE_CONG

Description: Number of TCH seizure failures because of congestion during call setup before connection acknowledgement. This counter is also updated in intra-cell or inter-cell handover, if the TCH attempt fails because of congestion before conversa-tion phase (handover is started and fails before connection acknowledgement message is received). In case of an external handover and handovers after external handover this counter is not incremented.


Updated: When RRM rejects a TCH request because of congestion.

This counter is updated in phases 2, 3, 5, or 8 only.

See figures: - FACCH call setup due to SDCCH congestion, no free TCH channel - Basic call, no free TCH and queuing or directed retry is not allowed - Basic call, no free TCHs, unsuccessful queuing and directed retry not activated - TCH assignment failure with cause switch_circuit_pool, queuing and directed retry not allowed - Unsuccessful forced release - Unsuccessful forced handover

DN9813827 135



3.143 001142 / QUEUED URGENT HANDOVER ATTEMPTS





Operability class:






Counter ID: 001142 Network element name: QUEUED URGENT HANDOVER ATTEMPTS

Version: 4.0 NetAct name: QUE_URG_HO_ATT

Description: Number of queued urgent handover attempts.


Updated: When a TCH request for an urgent handover attempt is put to the queue because of a lack of available TCH resources requested.

See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessfulTCH queuing





001064: QUE ALL HO REQ ATT

Operability class:

Related to feature:







136 DN9813827




3.144 001143 / AVE QUE TIME OF URGENT HO ATTEMPTS

3.145 001144 / QUE DENOMINATOR 4

Counter ID: 001143 Network element name: AVE QUE TIME OF URGENT HO ATTEMPTS


Description: Numerator of average queuing time of queued urgent handover attempts (unit of the value is 10 ms).

In a successful case counters 001008, 001022 and 001144 are updated along with this counter. In an unsuccessful case counters 001022, 001025, 001068 and 001144 are updated along with this counter.

Updated: When a TCH request for an urgent handover attempt is removed from the queue (both in a successful and an unsuccessful case).

See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing








001144: QUE DENOMINATOR 4

Operability class:

Related to feature:







Counter ID: 001144 Network element name: QUE DENOMINATOR 4


Description: Denominator of average queuing time of queued urgent handover attempts.


DN9813827 137



3.146 001145 / AVE QUE TIME OF NON URGENT HO ATTEMPTS

Updated: See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing




001143: AVE QUE TIME OF URGENT HO ATTEMPTS

Operability class:

Related to feature:







Counter ID: 001145 Network element name: AVE QUE TIME OF NON URGENT HO ATTEMPTS


Description: Numerator of average queuing time of queued non-urgent handover attempts.

In a successful case counters 001008, 001022 and 001146 are updated along with this counter. In an unsuccessful case counters 001022, 001025, 001068 and 001146 are updated along with this counter.

Updated: When a TCH request for a non-urgent HO attempt is removed from the queue (both in a successful and unsuccessful case).

See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing








001146: QUE DENOMINATOR 5

Operability class:

138 DN9813827




3.147 001146 / QUE DENOMINATOR 5

3.148 001147 / QUEUED URG HO ATTS NOT SERVED

Related to feature:







Counter ID: 001146 Network element name: QUE DENOMINATOR 5


Description: Denominator of average queuing time of queued urgent HO attempts.


Updated: See figures:- Internal intra-cell HO, successful TCH queuing- Internal intra-cell handover, unsuccessful TCH queuing




001145: AVE QUE TIME OF NON URGENT HO ATTEMPTS

Operability class:

Related to feature:







Counter ID: 001147 Network element name: QUEUED URG HO ATTS NOT SERVED

Version: 4.0 NetAct name: QUE_URG_HO_ATT_NOT_SERVED

Description: Number of queued urgent handover attempts not served.

Counters 001022, 001025, 001068 and 001143 are updated along with this counter.

DN9813827 139



3.149 001148 / MS SUCC TCH SEIZURE FOR ASSIGNMENT COMPLETE

Updated: When the urgent HO attempt is removed from the queue because of queuing timer expiry or substitution by a higher priority queuing item.








001143: AVE QUE TIME OF URGENT HO ATTEMPTS

Operability class:

Related to feature:







Counter ID: 001148 Network element name: MS SUCC TCH SEIZURE FOR ASSIGNMENT COMPLETE

Version: 4.0 NetAct name: MS_TCH_SUCC_SEIZ_ASSIGN_CMPLT

Description: Number of times when a MS is successfully on the TCH after an ASSIGNMENT_COMPLETE message.

Updated: When an ASSIGNMENT_COMPLETE message is received from the MS via BTS to TCH. The TCH is reserved and the MS is moved from the SDCCH to the TCH.

This counter is updated only when a call is established for the first time, not during handovers. This counter is not updated with softwares FACCH call setup because of SDCCH congestion, directed retry procedure in BSC, TCH assignment to super reuse TRX in IUO and direct access to super re-use TRX in IUO.

See figure Normal call.




140 DN9813827




3.150 001149 / CALLS ENDED BY USER DURING DADL/B SETUP

3.151 001150 / SUCC TCH SEIZ WHEN GOOD QUAL IN ADJA-CENTS

Operability class:

Related to feature:

BSS11083: Measurement Improvements






Counter ID: 001149 Network element name: CALLS ENDED BY USER DURING DADL/B SETUP

Version: 4.0 NetAct name: CALLS_ENDED_USER_DADLB_SETUP

Description: Number of CALLS RELEASED BY USER in a call setup phase during DADL/B handover.

Updated: When the user releases the call in call setup phase and BSC has started to evaluate the potential target cells for DADL/B handover.




Operability class:





Used from release: S7 Definition updated in release:S11.5

Counter ID: 001150 Network element name: SUCC TCH SEIZ WHEN GOOD QUAL IN ADJACENTS

Version: 4.0 NetAct name: TCH_SUCC_SEIZ_GOOD_QUAL_ADJ





DN9813827 141



3.152 001151 / TCH REQ REJ DUE TO BAD QUALITY IN ADJACENT

3.153 001152 / SUCC TCH SEIZ WHEN QUAL BETW GOOD AND BAD IN ADJACENT


Operability class:






Counter ID: 001151 Network element name: TCH REQ REJ DUE TO BAD QUALITY IN ADJACENT

Version: 4.0 NetAct name: TCH_REQ_REJ_BAD_QUAL_ADJ






Operability class:






Counter ID: 001152 Network element name: SUCC TCH SEIZ WHEN QUAL BETW GOOD AND BAD IN ADJACENT

Version: 4.0 NetAct name: TCH_SUCC_SEIZ_BETW_QUAL_ADJ






142 DN9813827




3.154 001153 / TCH REQ REJ WHEN QUAL BETW GOOD AND BAD IN ADJACENT

3.155 001154 / DYNAMIC SDCCH RECONFIGURATION ATTEMPT

Operability class:






Counter ID: 001153 Network element name: TCH REQ REJ WHEN QUAL BETW GOOD AND BAD IN ADJACENT

Version: 4.0 NetAct name: TCH_REQ_REJ_BETW_QUAL_ADJ






Operability class:






Counter ID: 001154 Network element name: DYNAMIC SDCCH RECON-FIGURATION ATTEMPT

Version: 4.0 NetAct name: SDCCH_DYNAMIC_RECONF_ATT

Description: Number of SDCCH reconfiguration attempts for immediate assignment.


DN9813827 143



3.156 001155 / UNSUCC IMM ASS SDCCH ATTEMPT

Updated: When an SDCCH channel is needed for an immediate assignment and no free SDCCHs are available and the request is sent for reconfiguring a TCH channel to an SDCCH channel. This counter is not updated if reconfiguration is done from SDCCH to TCH channel.

See figure Reconfiguration from TCH to SDCCH.





001007: SUCCESS SEIZURE FOR IMMEDIATE ASSIGNMENT

Operability class:

Related to feature:

BSS7036: Dynamic SDCCH Allocation






Counter ID: 001155 Network element name: UNSUCC IMM ASS SDCCH ATTEMPT

Version: 4.1 NetAct name: SDCCH_UNSUCC_IMM_ASSIGN_ATT

Description: Number of unsuccessful SDCCH allocation attempts for immediate assignment.


Updated: When the SDCCH channel allocation does not succeed because of a lack of SDCCH resources at the time of the immediate assignment. When SDCCH is released with the dx-cause rtsl_reconf_fail_c.

Triggered for example when a dynamic SDCCH allocation (1154 DYNAMIC_SDCCH_RECONFIGURATION_ATTEMPT) is tried but it fails. Failure can be caused for example by the following situations.

- In the BCSU/BCXU there cannot be more SDCCH allocated. - All TCHs are busy and cannot be reallocated. - RRM has reconfigured a TCH to SDCCH but ABI cannot do the same. In this case the dynamic SDCCH seized by RRM is released with cause rtsl_reconf_fail and the call attempt fails (blocking).

See figure FACCH call setup because of SDCCH congestion with counters.

144 DN9813827




3.157 001156 / HSCSD TCH REQ WITH 14,4




001001: SEIZURE ATTEMPTS WITH BUSY SDCCH

Operability class:

Related to feature:

BSS7036: Dynamic SDCCH Allocation






Counter ID: 001156 Network element name: HSCSD TCH REQ WITH 14,4

Version: 4.0 NetAct name: HSCSD_TCH_REQ_14400

Description: Number of TCH requests for 14.4 kbit/s data.

NOTE! Despite its name, this counter is not related to High Speed Circuit Switched Data (HSCSD), but the single slot 14.4 kbit/s data services.

Dependencies: Counters for a TCH request.

Updated: When the RRM receives a TCH request for a single slot 14.4 kbit/s data con-nection in a call or a handover attempt.

See figures: - Mobile originated HSCSD call setup - Successful internal inter-cell handover for HSCSD, target cell allocations and acti-vations for three channels





Operability class:

Related to feature:

BSS7003: High Speed Circuit Switched Data (HSCSD)






DN9813827 145



3.158 001157 / HSCSD SUCC TCH SEIZ WITH 14,4

3.159 001158 / HSCSD TRANSP TCH REQ

Counter ID: 001157 Network element name: HSCSD SUCC TCH SEIZ WITH 14,4

Version: 4.0 NetAct name: HSCSD_TCH_SUCC_SEIZ_14400

Description: Number of successful TCH seizures for 14.4 kbit/s data.

NOTE! Despite of its name, this counter is not related to High Speed Circuit Switched Data (HSCSD), but the single slot 14.4 kbit/s data services.

Dependencies: Counters for a successful TCH seizures.

Updated: When the RRM allocates a TCH/F as a response to a single slot 14.4 kbit/s request in a call or handover attempt.





Operability class:

Related to feature:







Counter ID: 001158 Network element name: HSCSD TRANSP TCH REQ

Version: 4.0 NetAct name: HSCSD_TRANSP_TCH_REQ

Description: Number of transparent HSCSD TCH requests.


Updated: When TCH/F(s) is / are requested for a transparent HSCSD service from the RRM in a call or a handover attempt.


146 DN9813827




3.160 001159 / HSCSD SUCC TRANSP TCH SEIZ




001160: HSCSD REQ FOR CALL SETUP

001161: HSCSD TCH REQ FOR HO

Operability class:

Related to feature:







Counter ID: 001159 Network element name: HSCSD SUCC TRANSP TCH SEIZ

Version: 4.0 NetAct name: HSCSD_TRANSP_TCH_SUCC_SEIZ

Description: Number of successful transparent HSCSD TCH seizures.


Updated: When TCH/F has been successfully allocated for transparent HSCSD service by RRM. Incrementation is made only by the HSCSD main channel allocation.





001162: HSCSD SUCC TCH SEIZ FOR CALL SETUP

001163: HSCSD SUCC TCH SEIZ FOR HO

Operability class:

Related to feature:






DN9813827 147



3.161 001160 / HSCSD REQ FOR CALL SETUP

3.162 001161 / HSCSD TCH REQ FOR HO


Counter ID: 001160 Network element name: HSCSD REQ FOR CALL SETUP

Version: 4.0 NetAct name: HSCSD_REQ_CALL_SETUP

Description: Number of HSCSD TCH requests for a call set-up.


Updated: When the HSCSD data connection is requested from the RRM in a call attempt.

See figure Mobile originated HSCSD call setup.





Operability class:

Related to feature:







Counter ID: 001161 Network element name: HSCSD TCH REQ FOR HO

Version: 4.0 NetAct name: HSCSD_TCH_REQ_HO

Description: Number of HSCSD TCH requests for a HO.


Updated: When the HSCSD data connection is requested from the RRM in a handover attempt.

See figure Successful internal inter-cell handover for HSCSD, target cell allocations and activations for three channels.



148 DN9813827




3.163 001162 / HSCSD SUCC TCH SEIZ FOR CALL SETUP

3.164 001163 / HSCSD SUCC TCH SEIZ FOR HO



Operability class:

Related to feature:







Counter ID: 001162 Network element name: HSCSD SUCC TCH SEIZ FOR CALL SETUP

Version: 4.0 NetAct name: HSCSD_TCH_SUCC_SEIZ_CALL_SETUP

Description: Number of successful HSCSD TCH seizures for a call set-up.


Updated: When the RRM allocates a main HSCSD TCH/F as a response to an HSCSD call attempt.

See figure Mobile originated HSCSD call setup.





Operability class:

Related to feature:







Counter ID: 001163 Network element name: HSCSD SUCC TCH SEIZ FOR HO

DN9813827 149



3.165 001164 / HSCSD CON REL DUE TO FAIL

Version: 4.0 NetAct name: HSCSD_TCH_SUCC_SEIZ_HO

Description: Number of successful HSCSD TCH seizures for a HO.


Updated: When the RRM allocates a main HSCSD TCH/F as a response to a handover attempt.

See figure Successful internal inter-cell handover for HSCSD, target cell allocations and activations for three channels.





Operability class:

Related to feature:







Counter ID: 001164 Network element name: HSCSD CON REL DUE TO FAIL

Version: 4.0 NetAct name: HSCSD_CON_REL_DUE_FAIL

Description: Number of HSCSD connection releases because of a failure.

Impact: HO failure, Call cleared

Updated: When the HSCSD main TCH/F is released with dx_cause indicating a failure.

See figure A CONNECTION_FAILURE message which comes during an HSCSD.




Operability class:

Related to feature:




150 DN9813827




3.166 001165 / SUCCESS TCH SEIZURE FOR DIRECT ACCESS

3.167 001166 / TCH REQUEST FOR DIRECT ACCESS REJECTED DUE TO LACK




Counter ID: 001165 Network element name: SUCCESS TCH SEIZURE FOR DIRECT ACCESS

Version: 4.0 NetAct name: TCH_SUCC_SEIZ_FOR_DIR_ACC

Description: Number of successful seizures for a TCH in direct accesses to a super-reuse TRX during the call setup phase.


Updated: When the RRM allocates a TCH as a response to a TCH request in a call attempt using direct access to a super-reuse TRX procedure.

See figure Internal intra-cell direct access from a regular DCCH to the super-reuse TRX.





001091: TCH SEIZ UND OVER

Operability class:

Related to feature:

BSS7057: Direct Access to Super Re-use TRX in IUO






Counter ID: 001166 Network element name: TCH REQUEST FOR DIRECT ACCESS REJECTED DUE TO LACK

Version: 4.0 NetAct name: TCH_REQ_DIR_ACC_REJ_DUE_LACK

DN9813827 151



3.168 001167 / TCH REQUEST FOR A BSC CONTROLLED TRHO PROCEDURE

Description: Number of requests for a direct access to a super-reuse TRX that are rejected because of a lack of resources during the call setup phase.


Updated: When the RRM has no TCHs available for assignment requests in a direct access attempt to a super-reuse TRX.

See figure Unsuccessful internal intra-cell direct access from regular DCCH to the super-reuse TRX due to lack of resources.





001092: TCH REJ REQ UND OVE

Operability class:

Related to feature:

BSS7057: Direct Access to Super Re-use TRX in IUO






Counter ID: 001167 Network element name: TCH REQUEST FOR A BSC CONTROLLED TRHO PROCEDURE

Version: 4.0 NetAct name: TCH_REQ_BSC_TRHO

Description: Number of TCH requests for a BSC-controlled TRHO procedure.

Updated: When the RRM receives a TCH request in a BSC-controlled TRHO attempt.

See figure Successful BSC controlled TRHO.




Operability class:

Related to feature:

BSS8123: Advanced Multilayer Handling




152 DN9813827




3.169 001168 / SUCC TCH SEIZ FOR A BSC CONTROLLED TRHO

3.170 001169 / REJ TCH SEIZ FOR A BSC CONTROLLED TRHO DUE LACK OF RESOURCES



Counter ID: 001168 Network element name: SUCC TCH SEIZ FOR A BSC CONTROLLED TRHO

Version: 4.0 NetAct name: TCH_SUCC_SEIZ_BSC_TRHO

Description: Number of successful TCH seizures for a BSC-controlled TRHO

Updated: When the RRM allocates a TCH as a response to a TCH request in a BSC-controlled TRHO attempt.

See figure Successful BSC controlled TRHO.




Operability class:

Related to feature:

BSS8123: Advanced Multilayer Handling






Counter ID: 001169 Network element name: REJ TCH SEIZ FOR A BSC CONTROLLED TRHO DUE LACK OF RESOURCES

Version: 4.0 NetAct name: TCH_REQ_REJ_BSC_TRHO_DUE_LACK

Description: Number of rejected TCH requests for a BSC-controlled TRHO procedure because of exceeded load in the target cell.

Updated: When the RRM rejects traffic channel allocation because of exceeded load in the target cell in a BSC-controlled TRHO.

See figure Unsuccessful BSC controlled TRHO.




DN9813827 153



3.171 001170 / SUCCESSFUL TCH SEIZURES FOR DADLB HO

3.172 001171 / TCH REQUEST IN DADLB HO REJECTED

Operability class:






Counter ID: 001170 Network element name: SUCCESSFUL TCH SEIZURES FOR DADLB HO

Version: 4.0 NetAct name: TCH_SUCC_SEIZ_DADLB_HO

Description: The number of successful TCH seizures because of DADL/B handover.

Updated: The counter is updated when a TCH allocation in the target cell during DADL/B handover is successful. BSC internal handover case.

See figure Successful handover due to DADL/B.




Operability class:

Related to feature:

BSS8032: Direct Access to Desired Layer/Band






Counter ID: 001171 Network element name: TCH REQUEST IN DADLB HO REJECTED

Version: 4.0 NetAct name: TCH_REQ_REJ_DADLB_HO

Description: Number of TCH requests in DADL/B handover rejected because of a lack of TCH.

Updated: The counter is updated when a TCH allocation in the target cell during DADL/B handover is unsuccessful because of lack of TCH. BSC internal handover case.

See figure Unsuccessful DADL/B handover due to lack of resources.

154 DN9813827




3.173 001172 / DADLB START DUE TO EXCEEDED LOAD




Operability class:

Related to feature:







Counter ID: 001172 Network element name: DADLB START DUE TO EXCEEDED LOAD

Version: 4.0 NetAct name: DADLB_START_DUE_EXCEEDED_LOAD

Description: Number of DADL/B handover attempts, started because of exceeded load in accessed cell.

Counter 004129 is updated if DADL/B HO is started.

Updated: This counter is updated when channel request is rejected because of exces-sive load and Radio Resource management requests a DADL/B handover. If the target cell is found within MaxTimeLimitDR, the DADL/B handover is started and also the counter 004129 is updated. If this timer triggers the DADL/B handover is not started.

See figures: - Successful handover due to DADL/B - Unsuccessful DADL/B handover due to lack of resources




004129: HO ATT DUE TO DADLB

Operability class:

Related to feature:






DN9813827 155



3.174 001173 / REMOVAL FROM QUE DUE TO DR

3.175 001174 / GPRS TER UPGRD REQ


Counter ID: 001173 Network element name: REMOVAL FROM QUE DUE TO DR

Version: 4.0 NetAct name: REMOVAL_FROM_QUE_DUE_TO_DR

Description: Number of requests removed from the queue because of start of DR.

Updated: This counter is updated when a request is removed from the queue by the RRM because of the start of DR.

See figure Internal directed retry.




Operability class:






Counter ID: 001174 Network element name: GPRS TER UPGRD REQ

Version: 4.1 NetAct name: GPRS_TER_UPGRD_REQ

Description: Number of territory upgrade requests received from the Packet Controller Unit.

156 DN9813827




3.176 001175 / INCOMPL SERV GPRS TER UPGR REQ

Updated: "When the Radio Resource Management receives from the Packet Control-ler Unit a request for new radio time slots to be added into the GPRS territory. The PCU can request an upgrade after BSC has fulfilled the default territory defined by the operator parameters.

The upgrade of the GPRS territory may be started for various reasons, for example when GPRS is set enabled in a BTS, GPRS-TRX is created or deblocked, TSL inside the GPRS territory is deblocked or CS load decreases, but this counter is not triggered in these cases.

This counter is triggered only when GPRS Territory Upgrade is started by Packet Switched Radio Resource Management requesting additional GPRS capacity.

Incase of DLDC territory upgrade request, this counter is updated together with counter 001257 - GPRS TERRITORY UPGRADE REQUEST DUE DLDC"




001257: GPRS TERRITORY UPGRADE REQUEST DUE DLDC

Operability class:

Related to feature:

BSS21343: DLDC Territory Procedures

BSS09006: General Packet Radio Service (GPRS)






Counter ID: 001175 Network element name: INCOMPL SERV GPRS TER UPGR REQ

Version: 4.1 NetAct name: INCOMPL_SERV_GPRS_TER_UPGR_REQ

Description: Number of territory upgrade requests that have been served with less radio time slots than requested.

Updated: When Radio Resource Management upgrades the GPRS territory with less RTSLs than the Packet Controller Unit requested for. This counter is updated also when DLDC territory upgrade request is fulfilled with less TSLs than requested



DN9813827 157



3.177 001176 / GPRS TER UG REJ DUE CSW TR

3.178 001177 / GPRS TER UG REJ DUE LACK PSW RES


Operability class:

Related to feature:








Counter ID: 001176 Network element name: GPRS TER UG REJ DUE CSW TR

Version: 4.0 NetAct name: GPRS_TER_UG_REJ_DUE_CSW_TR

Description: Number of territory upgrade requests that have been rejected because of the high load of the circuit switched traffic.

Updated: When Radio Resource Management rejects a GPRS territory upgrade request from the PCU because of high traffic load in BTS and maintaining the margin of idle TCHs for circuit switched traffic does not allow the upgrade.




Operability class:

Related to feature:







Counter ID: 001177 Network element name: GPRS TER UG REJ DUE LACK PSW RES

Version: 4.0 NetAct name: GPRS_TER_UG_REJ_DUE_LACK_PSW

Description: Number of territory upgrade requests that have been rejected because there are not enough resources capable of GPRS in the BTS.

158 DN9813827




3.179 001178 / GPRS TER UG REJ DUE LACK PCU CAP

Updated: When Radio Resource Management rejects a GPRS territory upgrade request of the PCU because all TRXs capable of GPRS traffic are already within the GPRS territory.




Operability class:

Related to feature:







Counter ID: 001178 Network element name: GPRS TER UG REJ DUE LACK PCU CAP

Version: 4.0 NetAct name: GPRS_TER_UG_REJ_DUE_LACK_PCU

Description: Number of territory upgrade requests that have been rejected because the capacity of the Packet Controller Unit the BTS is connected to is already totally in use.

Updated: When Radio Resource Management rejects a GPRS territory upgrade request from the PCU because the maximum number of TSLs, which the PCU is capable to handle are already in use.




Operability class:

Related to feature:







DN9813827 159



3.180 001179 / GPRS TER DG DUE INC IN CSW TR

3.181 001180 / GPRS TER UG DUE DEC CSW TR

Counter ID: 001179 Network element name: GPRS TER DG DUE INC IN CSW TR

Version: 4.0 NetAct name: GPRS_TER_DG_DUE_INC_IN_CSW_TR

Description: Number of GPRS territory downgrades made because of the increase in the circuit switched traffic load.

Updated: When the Radio Resource Management starts a GPRS territory downgrade in order to maintain the margin of idle TCHs for circuit switched traffic after a circuit switched channel allocation, or when the BSC during TCH congestion in the CSW ter-ritory directly allocates a TCH belonging to the GPRS territory.




Operability class:

Related to feature:







Counter ID: 001180 Network element name: GPRS TER UG DUE DEC CSW TR

Version: 4.0 NetAct name: GPRS_TER_UG_DUE_DEC_CSW_TR

Description: Number of GPRS territory upgrades made to fulfill the default GPRS ter-ritory as a consequence of decrease in the circuit switched traffic load.

Updated: When the Radio Resource Management starts a GPRS territory upgrade in order to fulfill the defined default GPRS territory after the traffic load in the BTS has decreased as a consequence of a circuit switched channel release.




Operability class:

Related to feature:




160 DN9813827




3.182 001181 / GPRS TER DOWNGRADE REQ

3.183 001182 / FULL TCH SEIZ INTRA AMR HO




Counter ID: 001181 Network element name: GPRS TER DOWNGRADE REQ

Version: 4.0 NetAct name: GPRS_TER_DOWNGRADE_REQ

Description: Number of territory downgrade requests received from the Packet Con-troller Unit.

Updated: When the Radio Resource Management receives from the Packet Control-ler Unit a request for a GPRS territory downgrade. The PCU can request for a down-grade for GPRS RTSLs beyond the default territory defined by the operator parameters. A GPRS territory downgrade is initiated because of increase of CS load. PCU can initiate GPRS resource downgrade to additional GPRS resources. For example, when PCU has previously requested GPRS territory upgrade and addi-tional channels has been given for GPRS use. When there is no more need for addi-tonal GPRS capacity PCU requests for downgrade, the additional channels are removed from GPRS territory and this counter is triggered.




Operability class:

Related to feature:







Counter ID: 001182 Network element name: FULL TCH SEIZ INTRA AMR HO

Version: 4.0 NetAct name: FULL_TCH_SEIZ_INTRA_AMR_HO

Description: Number of successful FR TCH seizures for an intra-cell HO when the channel rate changes and AMR speech codecs are in use.


DN9813827 161



3.184 001183 / HALF TCH SEIZ INTRA AMR HO

Updated: When the Radio Resource Management allocates a FR TCH for intra-cell HO as a response to a TCH request and the channel rate is changed from HR to FR and speech codec versions 3 are in use.

Updated only in AMR unpacking handover.




001116: FULL TCH SEIZ INT HO CH RATE

Operability class:

Related to feature:

BSS10004: Adaptive Multi Rate (AMR) Speech Codec






Counter ID: 001183 Network element name: HALF TCH SEIZ INTRA AMR HO

Version: 4.0 NetAct name: HALF_TCH_SEIZ_INTRA_AMR_HO

Description: Number of successful HR TCH seizures for intra-cell HO when the channel rate changes and AMR speech codecs are in use.


Updated: When the Radio Resource Management allocates a HR TCH for intra-cell HO as a response to a TCH request and the channel rate is changed from FR to HR and speech codec versions 3 are in use.

Updated only in AMR packing handover.




001117: HALF TCH SEIZ INT HO CH RATE

Operability class:

Related to feature:





162 DN9813827




3.185 001184 / TCH CALL REQ FOR AMR

3.186 001185 / SUCCESSFUL AMR CODEC SET DOWNGRADES



Counter ID: 001184 Network element name: TCH CALL REQ FOR AMR

Version: 4.0 NetAct name: TCH_CALL_REQ_FOR_AMR

Description: Number of TCH requests for an AMR call.

Counter 001026 is updated along with this counter in case of call setup.

Updated: When the Radio Resource Management receives a TCH request in a call setup or HO attempt and speech codec version 3 is the most preferred one.




001026: TCH CALL REQ

Operability class:

Related to feature:







Counter ID: 001185 Network element name: SUCCESSFUL AMR CODEC SET DOWNGRADES

Version: 4.0 NetAct name: SUCC_AMR_CODEC_SET_DOWNGR

Description: Number of successful AMR codec set downgrades during internal HOs for the source side AMR codec set. Downgrade is made to align the source side AMR codec set with the one chosen for the target side in order to utilize the one-way downlink speech path connection for the target side during the internal HO. The utili-zation of one-way downlink speech path connection decreases the amount of muting experienced in the speech path connection. Downgrade decision during internal HO depends on the parameter AMR codec mode set downgrades and upgrades enabled.

Updated: By the Abis interface services after successful mode modify procedures for BTS and MS.



DN9813827 163



3.187 001186 / UNSUCCESSFUL AMR CODEC SET DOWN-GRADES

3.188 001187 / SUCCESSFUL AMR CODEC SET UPGRADES


Operability class:

Related to feature:







Counter ID: 001186 Network element name: UNSUCCESSFUL AMR CODEC SET DOWNGRADES

Version: 4.0 NetAct name: UNSUCC_AMR_CODEC_SET_DOWNGR

Description: Number of unsuccessful AMR codec set downgrades during internal HOs for the source side AMR codec set. Alignment between the source side AMR codec set and the one chosen for the target side has failed and usage of one-way speech path downlink connection for the target side during the internal HO is not pos-sible.

Updated: By the Abis interface services after an unsuccessful mode modify procedure for BTS or MS.




Operability class:

Related to feature:







Counter ID: 001187 Network element name: SUCCESSFUL AMR CODEC SET UPGRADES

Version: 4.0 NetAct name: SUCC_AMR_CODEC_SET_UPGR

164 DN9813827




3.189 001188 / UNSUCCESSFUL AMR CODEC SET UPGRADES

Description: Number of successful AMR codec set upgrades after internal HOs for the target side AMR codec set. Upgrade is made to utilize the original AMR codec set of the target BTS which set was not chosen for the target side because of target side alignment with the source side during internal HO. This alignment is made in order to utilize the one-way downlink speech path connection for the target side during the internal HO. The utilization of one-way speech path downlink connection decreases the amount of muting experienced in the speech path connection. Upgrade decision after internal HO depends on the parameters AMR codec mode set downgrades and upgrades enabled and AMR multirate configuration in handovers.

Updated: By the Abis interface services after successful mode modify procedures for BTS and MS.




Operability class:

Related to feature:







Counter ID: 001188 Network element name: UNSUCCESSFUL AMR CODEC SET UPGRADES

Version: 4.0 NetAct name: UNSUCC_AMR_CODEC_SET_UPGR

Description: Number of unsuccessful AMR codec set upgrades after internal HOs for the target side AMR codec set. The target side continues to use the currently used AMR codec set.

Updated: By the Abis interface services after an unsuccessful mode modify procedure for BTS or MS.




Operability class:

Related to feature:





DN9813827 165



3.190 001189 / TCH REQ FOR 96 DAT CALL

3.191 001190 / SUCC TCH SEIZ FOR 96 DAT CALL



Counter ID: 001189 Network element name: TCH REQ FOR 96 DAT CALL

Version: 4.0 NetAct name: TCH_REQ_FOR_96_DAT_CALL

Description: Number of TCH requests for 9.6 kbit/s data call.

Updated: When the Radio Resource Management receives a TCH request for a single slot 9.6 kbit/s data connection in a call or a handover attempt.




Operability class:






Counter ID: 001190 Network element name: SUCC TCH SEIZ FOR 96 DAT CALL

Version: 4.0 NetAct name: SUCC_TCH_SEIZ_FOR_96_DAT_CALL

Description: Number of successful TCH seizures for 9.6 kbit/s data call.

Updated: When the Radio Resource Management allocates a TCH/F as a response to a single slot 9.6 kbit/s request in a call or handover attempt.




Operability class:






166 DN9813827




3.192 001191 / SDCCH DROP CALL AND HO

3.193 001192 / TCH REQUESTS FOR CALL ATTEMPT

Counter ID: 001191 Network element name: SDCCH DROP CALL AND HO

Version: 4.2 NetAct name: SDCCH_DROP_CALL_AND_HO

Description: Number of SDCCH drops in call setup and handover.

Updated: When 'CLEAR REQUEST' message is sent by BSC between 'CM SERVICE REQUEST' - 'ASSIGNMENT REQUEST' (call setup) and between 'HANDOVER COMPLETE' - 'ASSIGNMENT REQUEST' (SDCCH-SDCCH handover).

Logical type: Trigger type: Event Sampling interval:



Operability class:

Related to feature:

RG301618: SDCCH Drop Counters due to Clear Request





Used from release: S10.5ED

Definition updated in release:S15

Counter ID: 001192 Network element name: TCH REQUESTS FOR CALL ATTEMPT

Version: 4.0 NetAct name: TCH_REQUESTS_CALL_ATTEMPT

Description: Number of TCH channel requests for a call

Updated: Updated when a TCH is requested for a call. The counter is updated only once for every call attempt, that is, it is not updated for TCH-TCH handover attempts.

In segment environment, if the seizure of TCH is successful, the counter is updated to the BTS from which the TCH was successfully seizured. If the seizure is unsuc-cessful, the counter is updated to the BCCH BTS.




Operability class:




DN9813827 167



3.194 001193 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT

3.195 001194 / TCH ACCESS REJECTED DUE LOW RX



Definition updated in release:S11, S12 (Name changed)

Counter ID: 001193 Network element name: SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT

Version: 4.0 NetAct name: SUCC_TCH_SEIZ_CALL_ATTEMPT

Description: Number of succesful TCH channel seizures for a call

Updated: When a TCH is successfully allocated for a call.

The counter is updated only once for every call attempt, that is, it is not updated for TCH-TCH handover attempts.




Operability class:






Definition updated in release:S11, S12 (Name changed)

Counter ID: 001194 Network element name: TCH ACCESS REJECTED DUE LOW RX

Version: 4.0 NetAct name: TCH_ACC_REJ_DUE_LOW_RX

Description: Number of unsuccessful call setup attempts because of a too low RX level.

Updated: RRM updates the counter if a call setup fails because of a too low RX level.




Operability class:


168 DN9813827




3.196 001195 / MSC O HO CMD

3.197 001196 / BSC O HO CMD





Definition updated in release:S11.5

Counter ID: 001195 Network element name: MSC O HO CMD

Version: 4.0 NetAct name: MSC_O_HO_CMD

Description: Number of handover commands sent by the BSC in an outgoing MSC-controlled handover (SDCCH-SDCCH, TCH-TCH or SDCCH-TCH HO)

Updated: See figure Successful external handover, source.




Operability class:

Related to feature:







Counter ID: 001196 Network element name: BSC O HO CMD

Version: 4.0 NetAct name: BSC_O_HO_CMD_ASSGN

Description: Number of all handover commands sent by the BSC in an outgoing BSC-controlled handover (SDCCH-SDCCH, TCH-TCH or SDCCH-TCH HO).

Updated: See figures:-Internal directed retry-Successful internal inter-cell handover-Successful SDCCH internal inter-cell handover




Operability class:

DN9813827 169



3.198 001197 / BTS HO ASSGN

3.199 001198 / TCH REL DUE TO RADIO FAIL PH 9-11

Related to feature:







Counter ID: 001197 Network element name: BTS HO ASSGN

Version: 4.0 NetAct name: BTS_HO_ASSGN

Description: Number of assignment commands sent in intra-BTS handovers (SDCCH-SDCCH, TCH-TCH or SDCCH-TCH).

Updated: See figures:-Successful internal intra-cell handover-Successful SDCCH internal intra-cell handover




Operability class:

Related to feature:







Counter ID: 001198 Network element name: TCH REL DUE TO RADIO FAIL PH 9-11

Version: 4.0 NetAct name: TCH_REL_DUE_RADIO_FAIL_PH_9_11

Description: Number of TCH releases because of radio failures.

Updated: This counter is updated in call phases 9-11 only (Outgoing handovers before CONNECT_ACK).



170 DN9813827




3.200 001199 / TCH REL DUE TO BSS FAIL PH 2-3

3.201 001200 / TCH REL DUE TO BSS FAIL PH 9-11


Operability class:

Related to feature:







Counter ID: 001199 Network element name: TCH REL DUE TO BSS FAIL PH 2-3

Version: 4.0 NetAct name: TCH_REL_DUE_BSS_FAIL_PH_2_3

Description: Number of TCH releases because of BSS failures.

Updated: This counter is updated in call phases 2-3 only.

See figures:-Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message-TCH assignment failure, MSC sends CLEAR_COMMAND message




Operability class:

Related to feature:







Counter ID: 001200 Network element name: TCH REL DUE TO BSS FAIL PH 9-11


Description: Number of TCH releases because of BSS failures. Same DX causes as in counter 001140.

DN9813827 171



3.202 001201 / SDCCH FAIL PH 3

3.203 001202 / DROP AFTER TCH ASSIGN

Updated: This counter is updated in call phases 9-11 only (Outgoing handovers before CONNECT_ACK).




Operability class:

Related to feature:







Counter ID: 001201 Network element name: SDCCH FAIL PH 3

Version: 4.0 NetAct name: SDCCH_FAIL_PH_3

Description: Number of all the failures on SDCCH in call phase 3 that do not trigger any TCH failure counter in the same phase.

Updated:




Operability class:

Related to feature:







Counter ID: 001202 Network element name: DROP AFTER TCH ASSIGN

Version: 4.0 NetAct name: DROP_AFTER_TCH_ASSIGN

Description: Number of dropped calls after the TCH is assigned.

172 DN9813827




3.204 001203 / ERROR IND DURING LU

3.205 001204 / DROP TCH ASSCOMPL TO RFCH REL

Updated: When the drop occurs between ASSIGNMENT_COMPLETE and DISCON-NECT.

See figures:-CONNECTION_FAILURE message with cause transcoder_failure during a call-Dropped call between ASSIGNMENT COMPLETE and DISCONNECT




Operability class:

Related to feature:







Counter ID: 001203 Network element name: ERROR IND DURING LU

Version: 4.0 NetAct name: ERROR_IND_DURING_LU

Description: Number of Error indication messages received during the Location Update procedure.

Updated:




Operability class:

Related to feature:







Counter ID: 001204 Network element name: DROP TCH ASSCOMPL TO RFCH REL

DN9813827 173



Version: 4.0 NetAct name: DROP_TCH_ASSCOMPL_TO_RFCH_REL

Description: Number of TCH drops between the Assignment Complete and the RF Channel Release Ack messages.

Some of the counters 001013, 001014, 001029, 001030, 001046, 001047, 001048, 001049, 001050, 001051, 001070, 001081, 001084, 001085, 001087, 001088, and 001202 may be updated together with this counter.

Updated: When the TCH transaction ends in a phase between the Assignment Complete and the RF Channel Release Ack messages.

See figures:- CONNECTION_FAILURE message with cause transcoder_failure during a call- Dropped call between ASSIGNMENT COMPLETE and DISCONNECT- Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK




001013: TRANSACTIONS ENDED DUE RADIO FAIL

001014: TRANSACTIONS ENDED DUE SOURCE CHANNEL FAIL DURING HO

001029: TCH TR FAIL

001030: TCH TR FAIL SOURCE

001046: TCH LAPD FAIL

001047: TCH BTS FAIL

001048: TCH USER ACT

001049: TCH BCSU RESET

001050: TCH NETW ACT

001051: TCH A IF PROBL

001070: FORCED RELEASES

001081: TCH ACT FAIL CALL

001084: TCH ABIS FAIL CALL

001085: TCH ABIS FAIL SOURCE

001087: TCH A IF FAIL CALL

001088: TCH A IF FAIL SOURCE

001202: DROP AFTER TCH ASSIGN

Operability class:

Related to feature:

BSS115168: CS Statistics Improvements




174 DN9813827




3.206 001205 / TCH REL DUE RAD FAIL PH 2-3

3.207 001206 / TCH REL DUE RAD FAIL PH 12-14


Used from release: S11.5 Definition updated in release:

Counter ID: 001205 Network element name: TCH REL DUE RAD FAIL PH 2-3

Version: 4.1 NetAct name: TCH_REL_DUE_RAD_FAIL_PH_2_3

Description: Number of the TCH releases because of the radio failures.

Counter 001139 is updated together with this counter.

Updated: When the TCH is released in call phase 2 (MM signalling) or 3 (Basic assignment) because of a radio failure.

See figure Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message.




Operability class:

Related to feature:







Counter ID: 001206 Network element name: TCH REL DUE RAD FAIL PH 12-14

Version: 4.1 NetAct name: TCH_REL_DUE_RAD_FAIL_PH_12_14

Description: Number of the TCH releases because of radio failures. Counter 001139 is updated together with this counter.

Updated: When the TCH is released during the Handover phases (12-14) because of a radio failure.




Operability class:

DN9813827 175



3.208 001207 / TCH REL DUE BSS FAIL PH 12-14

3.209 001208 / A IF CRC MISMATCH CALL SETUP

Related to feature:







Counter ID: 001207 Network element name: TCH REL DUE BSS FAIL PH 12-14


Description: Number of the TCH releases because of the BSS failures. Counter 001140 is updated together with this counter.

Updated: When the TCH is released during the Handover phases (12-14) because of a BSS failure.




001140: TCH REL DUE TO BSS FAIL

Operability class:

Related to feature:







Counter ID: 001208 Network element name: A IF CRC MISMATCH CALL SETUP

Version: 4.0 NetAct name: A_IF_CRC_MISMATCH_CALL_SETUP

Description: Number of the TCH requests rejected because of the mismatch between the types of the requested channel and the A interface circuit, updated in call setup phase only.

Counter 001122 is updated together with this counter

176 DN9813827




3.210 001209 / GPRS TER DG REJ DUE STREAMING

3.211 001210 / GPRS TER DG REQ WHEN EQOS ON

Updated: When the RRM changes the A interface circuit pool before the TCH alloca-tion.




001122: TCH REJ DUE REQ CH A IF CRC

Operability class:

Related to feature:







Counter ID: 001209 Network element name: GPRS TER DG REJ DUE STREAMING

Version: 4.0 NetAct name: GPRS_TER_DG_REJ_DUE_STREAMING






Operability class:





Used from release: S11.5 Definition updated in release:S12

Counter ID: 001210 Network element name: GPRS TER DG REQ WHEN EQOS ON

Version: 4.0 NetAct name: GPRS_TER_DG_REQ_WHEN_EQOS_ON

DN9813827 177



3.212 001211 / TCH REL BSC BSC CONFLICT CALL

3.213 001212 / TCH REL BSC BSC CONFLICT TARG






Operability class:






Counter ID: 001211 Network element name: TCH REL BSC BSC CONFLICT CALL

Version: 4.1 NetAct name: TCH_REL_BSC_BSC_CONFLICT_CALL

Description: Number of TCH releases because of a BSC-BSC conflict.

Updated: When a TCH is released (with cause bc_t_bsc_bsc_conflict_c in call phases 1-8 or 15)




Operability class:

Related to feature:

BSS11052: Dynamic Frequency and Channel Allocation (DFCA)






Counter ID: 001212 Network element name: TCH REL BSC BSC CONFLICT TARG

178 DN9813827




3.214 001213 / GPRS TER UG REQ FROM CSW

Version: 4.1 NetAct name: TCH_REL_BSC_BSC_CONFLICT_TARG

Description: Number of TCH releases because of a BSC-BSC conflict.

Updated: When a TCH is released (with cause bc_t_bsc_bsc_conflict_c in call phases 12-14)




Operability class:

Related to feature:

BSS11052: Dynamic Frequency and Channel Allocation (DFCA)






Counter ID: 001213 Network element name: GPRS TER UG REQ FROM CSW

Version: 4.0 NetAct name: GPRS_TER_UG_REQ_FROM_CSW

Description: Number of territory upgrade requests to PCU initiated by the CSW.

Dependencies: 001214 and 001215

Updated: When the RRM initiates a PSW territory upgrade to the PCU.




001214: GPRS TER UG FROM CSW PARTIAL

001215: GPRS TER UG FROM CSW FAILED

Operability class:

Related to feature:

BSS115171: Dynamic Abis Enhancements






DN9813827 179



3.215 001214 / GPRS TER UG FROM CSW PARTIAL

3.216 001215 / GPRS TER UG FROM CSW FAILED

Counter ID: 001214 Network element name: GPRS TER UG FROM CSW PARTIAL

Version: 4.0 NetAct name: GPRS_TER_UG_FROM_CSW_PARTIAL

Description: Number of territory upgrade requests from the CSW RRM to the PCU that have been served with less radio time slots than requested, i.e. partially success-ful PSW territory upgrade in the PCU.

Dependencies: 001213

Updated: When the PCU upgrades the GPRS territory with less RTSLs than the RRM requested for.




001213: GPRS TER UG REQ FROM CSW

Operability class:

Related to feature:







Counter ID: 001215 Network element name: GPRS TER UG FROM CSW FAILED

Version: 4.0 NetAct name: GPRS_TER_UG_FROM_CSW_FAILED

Description: Number of territory upgrade requests from the CSW RRM to the PCU where the upgrade of the single new radio time slots to the PCU was not successful.

Dependencies: 001213

Updated: When the PCU rejects the whole PSW territory upgrade, i.e. no single new RTSL was upgraded to the PCU.




001213: GPRS TER UG REQ FROM CSW

180 DN9813827




3.217 001216 / TCH REQ REJ DUE TO LACK OF RES PER BCSU

Operability class:

Related to feature:







Counter ID: 001216 Network element name: TCH REQ REJ DUE TO LACK OF RES PER BCSU

Version: 4.1 NetAct name: TCH_REQ_REJ_DUE_NO_RES_BCSU

Description: Number of TCH requests rejected because of lack of capacity in one of the BCSU/BCXU units.

Updated: When there is no BCSU/BCXU capacity available for either call or HO attempt requests. This counter may be updated either immediately after a TCH request or, in case of queuing, when the queuing timer expires.

When the TCH request is rejected in case of directed retry (DR), this counter is updated as follows:

1) When a call is removed from the queue due to a DR attempt, this counter is NOT updated on the SOURCE side. Instead, counter 001173 is updated.

2) If queuing is not used or the queuing timer expires before a DR attempt, this counter is updated on the SOURCE side.

3) On the TARGET side, this counter is updated in case of congestion (blocking).




001173: REMOVAL FROM QUE DUE TO DR

Operability class:

Related to feature:

BSS115173: Soft Channel Capacity






DN9813827 181



3.218 001217 / INTERNAL TO EXTERNAL HO

3.219 001218 / NOT CHANGED INTERNAL HO

Counter ID: 001217 Network element name: INTERNAL TO EXTERNAL HO

Version: 4.0 NetAct name: NBR_OF_INT_HO_TO_EXT

Description: Number of internal handovers changed to external handovers.

Updated: When an internal handover is aborted by changing it to an external han-dover.




Operability class:

Related to feature:

BSS20117: TCSM3i





Used from release: S11.5 Definition updated in release:S12 (Name changed)

Counter ID: 001218 Network element name: NOT CHANGED INTERNAL HO

Version: 4.0 NetAct name: NBR_OF_NOT_CHANGED_INT_HO

Description: Number of internal handovers that should be changed to external han-dovers, but for which the change is not allowed.

Updated: When an internal handover should be changed to an external handover, but the change is not allowed due to too high A interface load.




Operability class:

Related to feature:

BSS20117: TCSM3i





Used from release: S11.5 Definition updated in release:S12 (Name changed)

182 DN9813827




3.220 001219 / IURG RELOCATION RESOURCE REQUEST

3.221 001220 / IURG RELOCATION RESOURCE ALLOCATION SUCCESSFUL

Counter ID: 001219 Network element name: IURG RELOCATION RESOURCE REQUEST

Version: 4.1 NetAct name: IURG_RELOC_RES_REQ

Description: Number of enhanced relocation resource requests on Iur-g

Updated: When BSC receives Enhanced Relocation Resource Request from RNC




Operability class:

Related to feature:

BSS21528: ISHO acceleration via Iur-g





Used from release: S11.5 Definition updated in release:S15 (name changed)

Counter ID: 001220 Network element name: IURG RELOCATION RESOURCE ALLOCATION SUCCESSFUL

Version: 4.1 NetAct name: IURG_RELOC_RES_ALLOC_SUCC

Description: Number of successful TCH allocations forenhanced relocation resource requests on Iur-g

Updated: When BSC allocates TCH successfully for Enhanced Relocation Resource Request




Operability class:

Related to feature:







DN9813827 183



3.222 001221 / TCH TR FAILURE FOR IURG HO WITHOUT A INTERFACE

3.223 001222 / IURG RELOCATION RESOURCE RELEASE

Counter ID: 001221 Network element name: TCH TR FAILURE FOR IURG HO WITHOUT A INTERFACE

Version: 4.1 NetAct name: TCH_TR_FAIL_FOR_IURG_HO_WO_A

Description: Number of remote transcoder failures when A-interface resource has not been allocated for Iur-g relocation procedure related handover

Updated: When BSC receives Connection Failure Indication with cause "remote transcoder failure" from BTS for TCH that has been allocated due to Enhanced Relo-cation Resource Request and A-interface circuit for this TCH has not been allocated yet




Operability class:

Related to feature:







Counter ID: 001222 Network element name: IURG RELOCATION RESOURCE RELEASE

Version: 4.1 NetAct name: IURG_RELOC_RES_RELEASE

Description: Number of TCH releases related to Enhanced Relocation Resource Release procedure

Updated: When BSC receives Enhanced Relocation Resource Release Command from RNC and releases TCH




Operability class:

Related to feature:




184 DN9813827




3.224 001223 / SPARE001223

3.225 001224 / SPARE001224




Counter ID: 001223 Network element name: SPARE001223

Version: 4.0 NetAct name: SPARE001223

Description: Reserved for future use.

Updated:




Operability class:









Updated:




Operability class:






DN9813827 185



3.226 001225 / SUCCESSFUL SDCCH ESTABLISHMENT LU EXCLUDED

3.227 001226 / SDCCH DROP LU EXCLUDED

Counter ID: 001225 Network element name: SUCCESSFUL SDCCH ESTABLISHMENT LU EXCLUDED

Version: 4.1 NetAct name: SDCCH_ESTAB_SUCC_LU_EXCLUDED

Description: Number of successful SDCCH establisments without LU.

Updated: When the BSC receives 'Establish Indication' message from the BTS and the MS has successfully moved to SDCCH. Counter is not updated for ESTABLISH INDICATION messages where SDCCH requested for Location Update.




Operability class:

Related to feature:

BSS101595: SDCCH Statistics Enhancement






Counter ID: 001226 Network element name: SDCCH DROP LU EXCLUDED

Version: 4.2 NetAct name: SDCCH_DROP_LU_EXCLUDED

Description: Number of dropped SDCCH without LU after SDCCH is successfully assigned.

This counter does not include phase 1 (before ESTABLISH INDICATION onSDCCH) and phase 4 (SDCCH release phase). Also the cases where call is dropped on SDCCH channel because of ASSIGNMENT FAILURE are excluded.

Updated: When the BSC requests to release a SDCCH connection due to a failure leading drop of connection on SDCCH. Counter is not updated for releases of SDCCH connections reserved for Location Update.




Operability class:

186 DN9813827




3.228 001227 / SUCCESSFUL SDCCH LU ESTABLISHMENT

3.229 001228 / SDCCH LU DROP

Related to feature:







Counter ID: 001227 Network element name: SUCCESSFUL SDCCH LU ESTABLISHMENT

Version: 4.1 NetAct name: SDCCH_LU_ESTABLISHMENT_SUCC

Description: Number of successful LU SDCCH establisments.

Updated: When the BSC receives 'Establish Indication' message from the BTS for a Location Update request and the MS has successfully moved to SDCCH.




Operability class:

Related to feature:







Counter ID: 001228 Network element name: SDCCH LU DROP

Version: 4.2 NetAct name: SDCCH_LU_DROP

Description: Number of dropped LU SDCCH after SDCCH is successfully assigned.

This counter does not include phase 1 (before ESTABLISH INDICATION onSDCCH) and phase 4 (SDCCH release phase). Also the cases where call is dropped on SDCCH channel because of ASSIGNMENT FAILURE are excluded.

Updated: When the BSC requests to clear SDCCH connection reserved for Location Update due to a failure that leads to a dropped SDCCH.



DN9813827 187



3.230 001229 / TCH ASSIGMENT FAILURE MS RETURN SDCCH

3.231 001230 / SDCCH DROP OTHER REASON


Operability class:

Related to feature:







Counter ID: 001229 Network element name: TCH ASSIGMENT FAILURE MS RETURN SDCCH

Version: 4.1 NetAct name: TCH_ASS_FAIL_MS_RETURN_SDCCH

Description: Number of TCH assigment failures where the MS has returned to SDCCH.

Updated: When the BSC receives 'Assignment Failure' message from the MS via the BTS indicating that the MS has returned to SDCCH.




Operability class:

Related to feature:







Counter ID: 001230 Network element name: SDCCH DROP OTHER REASON

Version: 4.2 NetAct name: SDCCH_DROP_OTHER_REASON

Description: Number of SDCCH drops excluding call setup and handover SDCCH drops.

Updated: When 'CLEAR REQUEST' message is sent by BSC and procedure is not call setup or handover.

188 DN9813827




3.232 001231 / SDCCH LU ATTEMPTS

3.233 001232 / SDCCH LU ATTEMPTS FAIL

Logical type: Trigger type: Event Sampling interval:



Operability class:

Related to feature:

RG301618: SDCCH Drop Counters due to Clear Request






Counter ID: 001231 Network element name: SDCCH LU ATTEMPTS

Version: 4.0 NetAct name: SDCCH_LU_ATTEMPT

Description: Number of SDCCH location update requests.

Counter 001000 is updated before this counter.

Updated: When a location update is received as SDCCH request type.





Operability class:

Related to feature:







Counter ID: 001232 Network element name: SDCCH LU ATTEMPTS FAIL

Version: 4.0 NetAct name: SDCCH_LU_ATTEMPT_FAIL

Description: Number of failed SDCCH location update requests.

Counter 001231 is updated before this counter.

DN9813827 189



3.234 001233 / DROPS AFTER DTM CS TCH ASSIGNMENT

Updated: When a channel allocation for SDCCH location update fails.




001231: SDCCH LU ATTEMPTS

Operability class:

Related to feature:







Counter ID: 001233 Network element name: DROPS AFTER DTM CS TCH ASSIGNMENT

Version: 4.0 NetAct name: DROP_AFTER_DTM_TCH_ASSIGN

Description: Number of DTM CS TCHs dropped after the CS TCH has been assigned.

Updated: When a CS TCH drop in the PS territory occurs between ASSIGNMENT COMPLETE and DISCONNECT messages.

This counter is updated in call phases 2, 3, 9, 10, 11 and 15 only.

See figure DTM CS connection drops after ASSIGNMENT COMPLETE; CONNEC-TION FAILURE received.




Operability class:

Related to feature:

BSS20088: Dual Transfer Mode (DTM)






190 DN9813827




3.235 001234 / DTM CS TCH DROPS BETWEEN ASSCOMPL AND RFCH REL ACK

3.236 001235 / FORCED RELEASE AFTER FORCED HO

Counter ID: 001234 Network element name: DTM CS TCH DROPS BETWEEN ASSCOMPL AND RFCH REL ACK

Version: 4.0 NetAct name: DROP_DTM_TCH_ASCMPL_RFCH_REL

Description: Number of DTM CS TCHs dropped between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK messages.

Updated: When a CS TCH drop in the PS territory occurs between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK messages.

This counter is updated in call phases 2, 3, 4, 9, 10, 11 and 15 only.

See figures:- DTM CS connection drops after ASSIGNMENT COMPLETE; CONNECTION FAILURE received- DTM CS connection drops after ASSIGNMENT COMPLETE; RELEASE INDICA-TION not received




Operability class:

Related to feature:

BSS20088: Dual Transfer Mode (DTM)






Counter ID: 001235 Network element name: FORCED RELEASE AFTER FORCED HO

Version: 3.0 NetAct name: FCD_RELEASE_AFTER_FCD_HO_ATT

Description: Number of started forced releases after an unsuccessful forced handover attempt.

Updated: When a BSC starts the forced release procedure due to an unsuccessful forced handover attempt.



DN9813827 191



3.237 001236 / CLASS 2 SUBSCRIBER FORCED RELEASE

3.238 001237 / TCH REQUESTS FOR CALL ATTEMPT CLASS 1


Operability class:

Related to feature:

BSS20869: Market Expansion Toolkit






Counter ID: 001236 Network element name: CLASS 2 SUBSCRIBER FORCED RELEASE

Version: 3.0 NetAct name: CL_2_SUBS_FORCED_RELEASE

Description: Number of forced releases of class 2 subscriber TCHs.

Updated: When a TCH of a class 2 subscriber is released with cause preemption. The MSC sends CLEAR COMMAND message using the cause Preemption to the BSC.




Operability class:

Related to feature:







Counter ID: 001237 Network element name: TCH REQUESTS FOR CALL ATTEMPT CLASS 1

Version: 3.0 NetAct name: TCH_REQUESTS_CALL_ATT_CL_1

Description: Number of TCH channel requests for a call from class 1 subscribers.

Updated: When a TCH is requested for a call by class 1 subscriber. The counter is updated only once for every call attempt, that is, it is not updated for the TCH-TCH handover attempts. In segment environment, if the seizure of a TCH is successful, the counter is updated to the BTS from where the TCH was successfully seizured. If the seizure is unsuccessful, the counter is updated to the BCCH BTS.

192 DN9813827




3.239 001238 / SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT CLASS 1





Operability class:

Related to feature:







Counter ID: 001238 Network element name: SUCCESSFUL TCH SEIZURES FOR CALL ATTEMPT CLASS 1

Version: 3.0 NetAct name: SUCC_TCH_SEIZ_CALL_ATT_CL_1

Description: Number of successful TCH channel seizures for a call from class 1 sub-scribers.

Updated: When a TCH is successfully allocated for a class 1 subscriber's call. The counter is updated only once for every call attempt, that is, it is not updated for the TCH-TCH handover attempts.




Operability class:

Related to feature:









DN9813827 193





Updated: When a TCH is requested for a call by class 2 subscriber. The counter is updated only once for every call attempt, that is, it is not updated for the TCH-TCH handover attempts. In segment environment, if the seizure of a TCH is successful, the counter is updated to the BTS from where the TCH was successfully seizured. If the seizure is unsuccessful, the counter is updated to the BCCH BTS.




Operability class:

Related to feature:














Operability class:

Related to feature:







194 DN9813827









Updated: When a TCH is requested for a call by class 3 subscriber. The counter is updated only once for every call attempt, that is, it is not updated for the TCH-TCH handover attempts. In segment environment if the seizure of a TCH is successful, the counter is updated to the BTS from where the TCH was successfully seizured. If the seizure is unsuccessful, the counter is updated to the BCCH BTS.




Operability class:

Related to feature:














Operability class:

Related to feature:




DN9813827 195



3.244 001243 / DR TRAU DOWNGRADE ATTEMPTED IN AMR HO

3.245 001244 / DR TRAU DOWNGRADE ATTEMPT FAILED




Counter ID: 001243 Network element name: DR TRAU DOWNGRADE ATTEMPTED IN AMR HO

Version: 3.0 NetAct name: DR_TRAU_DG_ATT_IN_AMR_HO

Description: Number of intra-BSC AMR FR to AMR HR handovers where the TRAU mode is attempted to be changed from FR to DR TRAU mode before handover.

Updated: When changing from FR TRAU to DR TRAU mode during AMR FR to AMR HR handover in source BTS (The Mode Modify with 8 kbps TRAU bit set is sent to the source BTS).




Operability class:

Related to feature:

BSS20588: TRAU Bicasting in AMR FR/HR Handover






Counter ID: 001244 Network element name: DR TRAU DOWNGRADE ATTEMPT FAILED

Version: 3.0 NetAct name: DR_TRAU_DG_ATT_FAILED

Description: Number of intra-BSC AMR FR to AMR HR handovers where the TRAU mode changing from FR to DR TRAU fails.

Updated: When changing from FR TRAU to DR TRAU mode during AMR FR to AMR HR handover fails in source BTS (The Mode Modify Nack is received from source BTS or supervision timer for the Mode Modify Ack expires).




Operability class:

196 DN9813827




3.246 001245 / DR TRAU UPGRADE ATTEMPTED IN AMR HO

3.247 001246 / DR TRAU UPGRADE ATTEMPT FAILED

Related to feature:







Counter ID: 001245 Network element name: DR TRAU UPGRADE ATTEMPTED IN AMR HO

Version: 3.0 NetAct name: DR_TRAU_UG_ATT_IN_AMR_HO

Description: Number of intra-BSC AMR HR to AMR FR handovers where the TRAU mode is attempted to be changed from DR to FR TRAU mode after handover.

Updated: When changing from DR TRAU to FR TRAU mode during AMR HR to AMR FR handover in target BTS (The Mode Modify with 8 kbps TRAU bit cleared is sent to the target BTS).




Operability class:

Related to feature:







Counter ID: 001246 Network element name: DR TRAU UPGRADE ATTEMPT FAILED

Version: 3.0 NetAct name: DR_TRAU_UG_ATT_FAILED

Description: Number of intra-BSC AMR HR to AMR FR handovers where the TRAU mode changing from DR to FR TRAU fails.

Updated: When changing from DR TRAU to FR TRAU mode during AMR HR to AMR FR handover fails in target BTS(The Mode Modify Nack is received from target BTS or supervision timer for the Mode Modify Ack expires).


DN9813827 197



3.248 001247 / SEIZURE IN AMR FR TO HR HO

3.249 001248 / SEIZURE IN AMR HR TO FR HO



Operability class:

Related to feature:







Counter ID: 001247 Network element name: SEIZURE IN AMR FR TO HR HO

Version: 3.0 NetAct name: SEIZ_AMR_FR_TO_HR

Description: Number of successful TCH seizures in intra-BSC AMR FR to AMR HR handovers.

Updated: When an AMR HR channel is allocated in intra-BSC handover and the source channel mode is AMR FR.




Operability class:

Related to feature:







Counter ID: 001248 Network element name: SEIZURE IN AMR HR TO FR HO

Version: 3.0 NetAct name: SEIZ_AMR_HR_TO_FR

Description: Number of successful TCH seizures in intra-BSC AMR HR to AMR FR handovers.

198 DN9813827




3.250 001249 / INTERNAL AMR HO TO EXTERNAL

3.251 001250 / SUCCESSFUL LRTCH SEIZURES

Updated: When an AMR FR channel is allocated in intra-BSC handover and the source channel mode is AMR HR.




Operability class:

Related to feature:







Counter ID: 001249 Network element name: INTERNAL AMR HO TO EXTERNAL

Version: 3.0 NetAct name: INT_AMR_HO_TO_EXT

Description: Number of intra-BSC AMR FR to AMR HR and AMR HR to AMR FR han-dovers that are changed to MSC controlled in order to reduce break in DL speech path.

Updated: When an intra-BSC AMR FR to AMR HR or AMR HR to AMR FR handover is aborted and handover is changed to external in order to reduce break in DL speech path.




Operability class:

Related to feature:







Counter ID: 001250 Network element name: SUCCESSFUL LRTCH SEIZURES

DN9813827 199



3.252 001251 / TIME OF WB-AMR CALLS

Version: 3.0 NetAct name: SUCC_LRTCH_SEIZ

Description: Number of succesful Long Reach TCH seizures.

Updated: When a BSC allocates Long Reach TCH for incoming external handover.




Operability class:

Related to feature:

BSS21274: Long Reach TSL (2G BTS)






Counter ID: 001251 Network element name: TIME OF WB-AMR CALLS

Version: 2.1 NetAct name: TIME_OF_AMR_WB_CALLS

Description: Number of times in a second when WB-AMR calls are active in the cell.

Updated: The BSC keeps record of the time the speech codec version 5 (WB-AMR) that is used.

The time is updated to counter when BSC receives the CHANNEL MODE MODIFY ACK message where WB-AMR changes to another codes or the channel is released. Because the call can be longer than measurement period, counter of one measure-ment period can show longer value than the expected while counter of another mea-surement period shows value that seems to be low.

When values are considered the daily basis allocation time does not exceed the total time of the measurement periods.


Unit: s Range: Example values:


Operability class:

Related to feature:

BSS20960: Wideband AMR





200 DN9813827




3.253 001252 / TCH REQUESTS FOR WB-AMR

3.254 001253 / TCH SEIZURES FOR WB-AMR


Counter ID: 001252 Network element name: TCH REQUESTS FOR WB-AMR

Version: 2.0 NetAct name: TCH_REQUESTS_FOR_AMR_WB

Description: Number of TCH requests for a WB-AMR call.

Updated: When the BSC receives a TCH request in a call setup or HO attempt and speech codec version 5 (WB-AMR) is the most preferred one.




001026: TCH CALL REQ

Operability class:

Related to feature:







Counter ID: 001253 Network element name: TCH SEIZURES FOR WB-AMR

Version: 2.0 NetAct name: TCH_SEIZURES_FOR_AMR_WB

Description: Number of successful WB-AMR TCH seizures when speech codec version 5 (WB-AMR) is in use.

Updated: When a TCH allocated for speech is released and the speech codec version 5 (WB-AMR) is or has been in use during the call.




Operability class:

Related to feature:




DN9813827 201



3.255 001254 / TCH ENDED DUE TRANSCODER FAILURE CODEC 5




Counter ID: 001254 Network element name: TCH ENDED DUE TRANSCODER FAILURE CODEC 5

Version: 2.0 NetAct name: TCH_ENDED_TRANSC_FAIL_CODEC_5

Description: Number of radio TCH transactions that are ended because of a transcoder failure when the speech codec version 5 (WB-AMR) is in use.

Updated: When a TCH transaction ends because of a transcoder failure during a call attempt or handover and the speech codec version 5 (WB-AMR) is in use.

In case of call attempt, transaction failures can also happen in a situation when the timer T3109 expires in a BSC in call release phase while waiting for the Release Indi-cation. The MS subscriber does not see these failures caused by the T3109 expiry as real drop calls.

In case of handover the transcoder failure can happen before a message is received from the MS stating that the HO or assignment is completed.

This counter is updated together with one of the transcoder failure counters 001029: TCH TR FAIL, 001030: TCH TR FAIL SOURCE or 001031: TCH TR FAIL TARGET.




001029: TCH TR FAIL

001030: TCH TR FAIL SOURCE

001031: TCH TR FAIL TARGET

Operability class:

Related to feature:







202 DN9813827




3.256 001255 / CODEC TYPE CHANGE FROM AMR TO WB-AMR SUCCESSFUL

3.257 001256 / CODEC TYPE CHANGE FROM WB-AMR TO AMR SUCCESSFUL

Counter ID: 001255 Network element name: CODEC TYPE CHANGE FROM AMR TO WB-AMR SUCCESSFUL

Version: 2.0 NetAct name: SUCC_CHANGE_AMR_TO_AMR_WB

Description: Number of successful codec type changes from AMR to WB-AMR.

Updated: When a CHANNEL MODE MODIFY ACK message is received by BSC and the codec type change is successful.




Operability class:

Related to feature:







Counter ID: 001256 Network element name: CODEC TYPE CHANGE FROM WB-AMR TO AMR SUCCESSFUL

Version: 2.0 NetAct name: SUCC_CHANGE_AMR_WB_TO_AMR

Description: Number of successful codec type changes from WB-AMR to AMR.

Updated: When a CHANNEL MODE MODIFY ACK message is received by BSC and the codec type change is successful.




Operability class:

Related to feature:






DN9813827 203



3.258 001257 / GPRS TERRITORY UPGRADE REQUEST DUE DLDC

3.259 001258 / GPRS TERRITORY UPGRADE DUE DLDC REJECT


Counter ID: 001257 Network element name: GPRS TERRITORY UPGRADE REQUEST DUE DLDC

Version: 1.0 NetAct name: GPRS_TER_UPGRD_REQ_DUE_DLDC

Description: Number of GPRS territory upgrade requests with DLDC reason.

Updated: When Radio Resource Management receives a request from a Packet Con-troller Unit(PCU) for new radio time slots to be added into the GPRS territory and the request is identified with DLDC specific reason for upgrade. The PCU can request an upgrade after BSC has fulfilled the default territory defined by the operator parame-ters. Counter is updated only when DLDC TRX is required and the second TRX is tried to be added to the territory.




001174: GPRS TER UPGRD REQ

Operability class:

Related to feature:







Counter ID: 001258 Network element name: GPRS TERRITORY UPGRADE DUE DLDC REJECT

Version: 1.0 NetAct name: GPRS_TER_UPGRD_DUE_DLDC_REJ

Description: Number of rejected GPRS territory upgrades with DLDC reason.

Updated: When Radio Resource Management rejects territory upgrade request by itself or it receives DLDC specific rejection from the Packet Controller Unit for the ter-ritory upgrade request. Counter is updated only when DLDC TRX was required and upgrading of the second TRX to territory has failed.



204 DN9813827




3.260 001259 / TCH REQUEST WITHIN DL RX LEVEL WINDOW

3.261 001260 / TCH SEIZURE IN BCCH DUE TO DL RX LEVEL


Operability class:

Related to feature:







Counter ID: 001259 Network element name: TCH REQUEST WITHIN DL RX LEVEL WINDOW

Version: 1.0 NetAct name: TCH_REQ_IN_DL_RX_LEV_WINDOW

Description: Number of TCH requests with DL RX level being within DL RX level window. All TCH requests (call setups and handovers) having DL RX level within DL RX level window are included. DL RX level measurement is never present in external handover requests, so external handovers are not visible in this counter.

Updated: Counter is updated when TCH is requested and DL RX level is within DL RX level window.




Operability class:

Related to feature:

BSS21222: Energy Optimised TCH Allocation






Counter ID: 001260 Network element name: TCH SEIZURE IN BCCH DUE TO DL RX LEVEL

Version: 1.0 NetAct name: TCH_SEIZ_BCCH_DUE_RX_LEV

DN9813827 205



3.262 001261 / TCH REQUEST OUT OF DL RX LEVEL WINDOW

Description: Number of TCH seizures in BCCH layer due to DL RX level being within DL RX level window. TCH seizures in call setups and internal handovers are included in this counter. DL RX level measurement is never present in external handovers, so external handovers are not visible in this counter.

Updated: Counter is updated when TCH is allocated in BCCH TRX and DL RX level is within DL RX level window.




Operability class:

Related to feature:







Counter ID: 001261 Network element name: TCH REQUEST OUT OF DL RX LEVEL WINDOW

Version: 1.0 NetAct name: TCH_REQ_OUT_DL_RX_LEV_WINDOW

Description: Number of TCH requests with DL RX level being out of DL RX level window. All TCH requests (call setups and handovers) having DL RX level out of DL RX level window are included. DL RX level measurement is never present in external handover requests, so external handovers are not visible in this counter.

Updated: Counter is updated when TCH is requested and DL RX level is out of DL RX level window.




Operability class:

Related to feature:







206 DN9813827




3.263 001262 / TCH SEIZURE IN NON-BCCH DUE TO DL RX LEVEL

3.264 001263 / DHR MULTIPLEXING ATTEMPTS

Counter ID: 001262 Network element name: TCH SEIZURE IN NON-BCCH DUE TO DL RX LEVEL

Version: 1.0 NetAct name: TCH_SEIZ_NON_BCCH_DUE_RX_LEV

Description: Number of TCH seizures in non-BCCH layer due to DL RX level being out of DL RX level window. TCH seizures in call setups and internal handovers are included in this counter. DL RX level measurement is never present in external han-dovers, so external handovers are not visible in this counter.

Updated: Counter is updated when TCH is allocated in non-BCCH TRX and DL RX level is out of DL RX level window.




Operability class:

Related to feature:







Counter ID: 001263 Network element name: DHR MULTIPLEXING ATTEMPTS

Version: 1.0 NetAct name: DHR_MULTIPLEXING_ATTEMPTS

Description: Number of times the load criteria for OSC Double Half Rate multiplexing is triggered.

Updated: When the Radio Resource Management concludes the need for double half rate multiplexing at the reception of Rx level and power control information from the HO&PC algorithm.




Operability class:

Related to feature:

BSS21309: OSC Half Rate with SAIC MS



DN9813827 207



3.265 001264 / DHR MULTIPLEXING FAILURE DUE TO TCH RESOURCE

3.266 001265 / CSDAP RESOURCE ALLOCATION ATTEMPTS FOR DHR




Counter ID: 001264 Network element name: DHR MULTIPLEXING FAILURE DUE TO TCH RESOURCE

Version: 1.0 NetAct name: DHR_MULTIPLX_FAIL_DUE_TCH_RES

Description: Number of times a suitable pair of AMR calls for OSC Double Half Rate multiplexing cannot be found.

Updated: When the Radio Resource Management fails to allocate calls for double half rate multiplexing.




Operability class:

Related to feature:







Counter ID: 001265 Network element name: CSDAP RESOURCE ALLOCA-TION ATTEMPTS FOR DHR

Version: 1.0 NetAct name: CSDAP_RES_ALLOC_ATT_FOR_DHR

Description: Number of CSDAP resource allocation attempts for OSC Double Half Rate.

Updated: When Radio Resource Management requests CSDAP resources for double half rate multiplexing.




Operability class:

208 DN9813827




3.267 001266 / DHR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

3.268 001267 / DHR MULTIPLEXING FAILURE DUE TO OTHER REASON

Related to feature:







Counter ID: 001266 Network element name: DHR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

Version: 1.0 NetAct name: DHR_MPLX_FAIL_DUE_CSDAP_RES

Description: Number of times OSC Double Half Rate multiplexing is triggerred but CSDAP resource allocation fails because of- CSDAP congestion- CSDAP being out of order due to failure- CSDAP hunting timer expiry or- CSDAP hunting error.

Updated: After double half rate multiplexing attempt has been cancelled.




Operability class:

Related to feature:







Counter ID: 001267 Network element name: DHR MULTIPLEXING FAILURE DUE TO OTHER REASON

Version: 1.1 NetAct name: DHR_MPLX_FAIL_DUE_OTHER

Description: Number of times double half rate multiplexing is rejected because the state of the call is unsuitable or the licence capacity limit has been reached.

DN9813827 209



3.269 001268 / TCH REQ REJ DUE ABIS CONG

Updated: When the Radio Resource Management rejects the triggered double half rate multiplexing procedure because the licensed capacity is already fully in use, or when the Call Control rejects the initiated double half rate multiplexing handover request because the state of the call is unsuitable.




Operability class:

Related to feature:







Counter ID: 001268 Network element name: TCH REQ REJ DUE ABIS CONG

Version: 1.0 NetAct name: TCH_REQ_REJ_DUE_ABIS_CONG

Description: Number of requests for TCHs that are rejected because of Abis conges-tion.

Updated: Updated after TCH request is rejected because of Abis congestion during the call setup and conversation phase including handover rejections.





Operability class:

Related to feature:

BSS21454: Packet Abis over IP/Ethernet

BSS21440: Packet Abis over TDM






210 DN9813827




3.270 001269 / CALL SETUP REJ DUE ABIS CONG

3.271 001270 / GPRS TERR UG REJ DUE ABIS

Counter ID: 001269 Network element name: CALL SETUP REJ DUE ABIS CONG

Version: 1.0 NetAct name: CALL_SETUP_REJ_DUE_ABIS_CONG

Description: Number of requests for TCH that are rejected because of Abis conges-tion during call setup before connection acknowledgement.

Updated: Updated after TCH request is rejected because of Abis congestion during call setup before ASSIGNMENT COMPLETE message sent to MSC.This counter is also updated in intra-cell or inter-cell handover, if the TCH request is rejected because of Abis congestion before conversation phase. In case of an external handover and handovers after external handover this counter is not incre-mented. TCH REQUEST REJECTS DUE ABIS CONGESTION 001268 is updated along with this counter.





Operability class:

Related to feature:








Counter ID: 001270 Network element name: GPRS TERR UG REJ DUE ABIS

Version: 1.0 NetAct name: GPRS_TERR_UG_REJ_DUE_ABIS

Description: Number of GPRS territory upgrade requests that have been rejected because of Packet Abis congestion.

Updated: Updated when territory upgrade request has been rejected because of Packet Abis congestion.BSC can start rejecting GPRS upgrade requests when BSC receives congestion detection information from BTS that is based on exceeding Abis Thoughtput BU2 threshold or Percentage of packet loss of Abis PL2 threshold. BSC stops rejecting GPRS upgrade requests due to congestion when BTS informs that measured congestion levels are lower than related hysteresis BU2_Hy or PL2_Hy thresholds.


DN9813827 211



3.272 001271 / SPARE001271

3.273 001272 / TCH REQUEST REJECT DUE TO ETP OVERLOAD



Operability class:

Related to feature:











Updated:




Operability class:






Counter ID: 001272 Network element name: TCH REQUEST REJECT DUE TO ETP OVERLOAD

Version: 1.0 NetAct name: TCH_REQ_REJ_DUE_ETP_OVERLOAD

Description: Number of requests for TCHs that are rejected because of ETP overload.

Updated: Updated after TCH request is rejected because of ETP overload.Counter 001011 is updated along this counter.



212 DN9813827




3.274 001273 / CALL SETUP REJECT DUE TO ETP OVERLOAD

3.275 001274 / MO LS CALL SUCCESSFUL



Operability class:

Related to feature:








Counter ID: 001273 Network element name: CALL SETUP REJECT DUE TO ETP OVERLOAD

Version: 1.0 NetAct name: CALL_SETUP_REJ_DUE_ETP_OVER

Description: Number of TCH seizure failures because of ETP overload during call setup before connection acknowledgement.

Updated: When TCH seizure failures due to ETP overload during call setup before connection acknowledgement.This counter is also updated in intra-cell or inter-cell handover, if the TCH attempt fails because of ETP overload before conversation phase. In case of an external handover and handovers after external handover this counter is not incremented.





Operability class:

Related to feature:








Counter ID: 001274 Network element name: MO LS CALL SUCCESSFUL

DN9813827 213



3.276 001275 / MT LS CALL SUCCESSFUL

Version: 1.1 NetAct name: MO_LS_CALL_SUCCESS

Description: Number of successful basic mobile originated speech calls, which have a locally switched speech path

Updated: When local switching establishment is successful for mobile originated calls




Operability class:

Related to feature:

BSS21327: Local Switching For Packet Abis






Counter ID: 001275 Network element name: MT LS CALL SUCCESSFUL

Version: 1.1 NetAct name: MT_LS_CALL_SUCCESS

Description: Number of successful basic mobile terminated speech calls, which have a locally switched speech path

Updated: When local switching establishment is successful for mobile terminated calls




Operability class:

Related to feature:







214 DN9813827




3.277 001276 / LS ESTABLISHMENT UNSUCCESSFUL DUE TO CODEC

3.278 001277 / LS RELEASE DUE TO INTER HO OUTSIDE LS AREA

Counter ID: 001276 Network element name: LS ESTABLISHMENT UNSUCCESSFUL DUE TO CODEC

Version: 1.1 NetAct name: LS_ESTAB_UNSUCC_DUE_CODEC

Description: Number of unsuccessful Local Switching establishments due to different speech codecs on local call peers

Updated: Updated after TCH allocation, when local switching cannot be established because of mismatch between chosen codec and codec used by peer




Operability class:

Related to feature:







Counter ID: 001277 Network element name: LS RELEASE DUE TO INTER HO OUTSIDE LS AREA

Version: 1.1 NetAct name: LS_REL_DUE_INTER_HO_OUT_LS

Description: Number of Local Switching releases due to inter-cell handover outside of the LS Area

Updated: When inter-cell handover is triggered outside LS area for a locally switched call. This is updated before handover command is sent to mobile




Operability class:

Related to feature:





DN9813827 215



3.279 001278 / LS RELEASE DUE TO EXTERNAL HO

3.280 001279 / LS RELEASE DUE TO SUPPLEM SERVICE ESTABLISHMENT



Counter ID: 001278 Network element name: LS RELEASE DUE TO EXTERNAL HO

Version: 1.1 NetAct name: LS_REL_DUE_EXTERNAL_HO

Description: Number of Local Switching releases due to external handover

Updated: When inter-bsc handover is triggered for a locally switched call. This is updated before handover command is sent to mobile




Operability class:

Related to feature:







Counter ID: 001279 Network element name: LS RELEASE DUE TO SUPPLEM SERVICE ESTABLISHMENT

Version: 1.1 NetAct name: LS_REL_DUE_SUPPL_SERV_ESTAB

Description: Number of Local Switching releases due to establishment of supplemen-tary services, which require speech path control of MSC

Updated: When local-switching is released due to start of supplementary services




Operability class:

Related to feature:




216 DN9813827




3.281 001280 / SPARE001280

3.282 001281 / SPARE001281







Updated:




Operability class:









Updated:




Operability class:






DN9813827 217



3.283 001282 / SPARE001282

3.284 001283 / SPARE001283

3.285 001284 / SPARE001284




Updated:




Operability class:









Updated:




Operability class:









218 DN9813827




3.286 001285 / SPARE001285

3.287 001286 / SPARE001286

Updated:




Operability class:









Updated:




Operability class:









Updated:




Operability class:

DN9813827 219



3.288 001287 / SPARE001287

3.289 001288 / DFR MULTIPLEXING ATTEMPTS IN 8K TRAU MODE









Updated:




Operability class:






Counter ID: 001288 Network element name: DFR MULTIPLEXING ATTEMPTS IN 8K TRAU MODE

Version: 1.0 NetAct name: DFR_MULTIPLX_ATT_8K_TRAU_MODE

Description: Number of DFR multiplexing attempts in 8k TRAU mode

Updated: When Radio Resource Management starts DFR multiplexing attempt to 8k TRAU mode. General counter DFR MULTIPLEXING ATTEMPS contains also DFR multiplexing attempts to 8k TRAU mode.




Operability class:

220 DN9813827




3.290 001289 / TRAU DOWNGRADE ATTEMPTED IN DFR MULTI-PLEXING

3.291 001290 / TRAU DOWNGRADE FAILED IN DFR MULTIPLEX-ING

Related to feature:

BSS21325: 8K TRAU FOR OSC AMR FR






Counter ID: 001289 Network element name: TRAU DOWNGRADE ATTEMPTED IN DFR MULTIPLEXING

Version: 1.0 NetAct name: TRAU_DG_ATT_IN_DFR_MULTIPLX

Description: Number of DFR multiplexing procedures where the TRAU mode is attempted to be changed from FR TRAU to 8k TRAU mode in target channel before multiplexing handover

Updated: When target channel is changed from FR TRAU to 8k TRAU mode during DFR multiplexing. BSC Call Control modifies the target channel to 8k TRAU mode.




Operability class:

Related to feature:







Counter ID: 001290 Network element name: TRAU DOWNGRADE FAILED IN DFR MULTIPLEXING

Version: 1.0 NetAct name: TRAU_DG_FAIL_IN_DFR_MULTIPLX

Description: Number of DFR multiplexing procedures that have failed because the TRAU mode changing from FR TRAU to 8k TRAU fails in target channel.

DN9813827 221



3.292 001291 / TRAU UPGRADE ATTEMPTED IN DFR DEMULTI-PLEXING

Updated: When the changing target channel from FR TRAU to 8k TRAU mode fails during DFR multiplexing. BSC Call Control does not receive acknowledge to modifi-cation request or, receives negative acknowledge from BTS. This counter is also updated if the decrease of connection bandwidth in group switch fails in BSC.




Operability class:

Related to feature:







Counter ID: 001291 Network element name: TRAU UPGRADE ATTEMPTED IN DFR DEMULTIPLEXING

Version: 1.0 NetAct name: TRAU_UG_ATT_IN_DFR_DEMULTIPLX

Description: Number of DFR demultiplexing, neighbour OSC sub channel handover and, neighbour OSC sub channel release procedures where TRAU mode is attempted to be changed from 8k TRAU to 16k TRAU mode in source channel after the procedure.

Updated: When source channel is changed from 8k TRAU to 16k TRAU mode after DFR demultiplexing or, neighbour OSC sub channel handover or, neighbour OSC sub channel release procedure. BSC Call Control modifies the source channel to FR TRAU mode.




Operability class:

Related to feature:







222 DN9813827




3.293 001292 / TRAU UPGRADE FAILED IN DFR DEMULTIPLEX-ING

3.294 001293 / DFR MULTIPLEXING ATTEMPTS

Counter ID: 001292 Network element name: TRAU UPGRADE FAILED IN DFR DEMULTIPLEXING

Version: 1.0 NetAct name: TRAU_UG_FAIL_IN_DFR_DEMULTPLX

Description: Number of DFR demultiplexing, neighbour OSC sub channel handover and, neighbour OSC sub channel release procedures where the source channel is left in 8k TRAU mode because TRAU mode changing from 8k TRAU to FR TRAU fails.

Updated: When changing source channel from 8k TRAU to FR TRAU mode fails after DFR demultiplexing or, neighbour OSC sub channel handover or, neighbour OSC sub channel release procedure. BSC Call Control does not receive acknowledge to mod-ification request or, receives negative acknowledge from BTS.This counter is also updated if the increase of connection bandwidth in group switch fails in BSC.




Operability class:

Related to feature:







Counter ID: 001293 Network element name: DFR MULTIPLEXING ATTEMPTS

Version: 1.0 NetAct name: DFR_MULTIPLEXING_ATTEMPTS

Description: Number of times the load criteria for double full rate multiplexing has trig-gered.

Updated: When the Radio Resource Management concludes the need for double full rate multiplexing at the reception of Rx level and power control information from the HO&PC algorithm.




Operability class:

DN9813827 223



3.295 001294 / DFR MULTIPLEXING FAILURE DUE TO TCH RESOURCE

3.296 001295 / CSDAP RESOURCE ALLOCATION ATTEMPTS FOR DFR

Related to feature:

BSS21534: OSC Full Rate with SAIC MS






Counter ID: 001294 Network element name: DFR MULTIPLEXING FAILURE DUE TO TCH RESOURCE

Version: 1.0 NetAct name: DFR_MULTIPLX_FAIL_DUE_TCH_RES

Description: Number of times a suitable pair of AMR FR calls for double full rate mul-tiplexing cannot be found.

Updated: When the Radio Resource Management fails to allocate calls for double full rate multiplexing at the reception of Rx level and power control information from the HO&PC algorithm.




Operability class:

Related to feature:







Counter ID: 001295 Network element name: CSDAP RESOURCE ALLOCA-TION ATTEMPTS FOR DFR

Version: 1.0 NetAct name: CSDAP_RES_ALLOC_ATT_FOR_DFR

Description: Number of CSDAP resource allocation attempts for OSC Full Rate.

Updated: When Radio Resource Management requests CSDAP resources for double full rate multiplexing.


224 DN9813827




3.297 001296 / DFR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

3.298 001297 / DFR MULTIPLEXING FAILURE DUE TO OTHER REASON



Operability class:

Related to feature:







Counter ID: 001296 Network element name: DFR MULTIPLEXING FAILURE DUE TO CSDAP RESOURCE

Version: 1.0 NetAct name: DFR_MPLX_FAIL_DUE_CSDAP_RES

Description: double full rate multiplexing has triggerred but CSDAP resource alloca-tion fails because of CSDAP congestion, CSDAP being out of order due to failure, CSDAP hunting timer expiry or CSDAP hunting error.

Updated: After double full rate multiplexing attempt has been cancelled.




Operability class:

Related to feature:







Counter ID: 001297 Network element name: DFR MULTIPLEXING FAILURE DUE TO OTHER REASON

Version: 1.0 NetAct name: DFR_MPLX_FAIL_DUE_OTHER

DN9813827 225



3.299 001298 / TCH REQUEST REJECTED DUE TO TX POWER

Description: Number of times double full rate multiplexing is rejected due to unsuitable state of the call

Updated: When Call Control rejects the initiated double full rate multiplexing handover request due to unsuitable state of the call.




Operability class:

Related to feature:







Counter ID: 001298 Network element name: TCH REQUEST REJECTED DUE TO TX POWER

Version: 1.0 NetAct name: TCH_REQ_REJ_DUE_TO_TX_POWER

Description: Number of rejected TCH requests when not enough TX power available.

Updated: When BSC rejects traffic channel allocation because there is not enough TX power available in any Traffic channel






Operability class:

Related to feature:

BSS21507: Flexible MCPA TX Power Pooling






226 DN9813827




3.300 001299 / POWER BALANCING HANDOVER REQUESTED

3.301 001300 / POWER BALANCING HO REQUEST REJECTED

Counter ID: 001299 Network element name: POWER BALANCING HANDOVER REQUESTED

Version: 1.0 NetAct name: POWER_BALANCING_HO_REQUESTED

Description: Number of times the BTS has informed about too high compression rate.

Updated: When BSC receives message COMPRESSION RATE INDICATION from BTS.




Operability class:

Related to feature:







Counter ID: 001300 Network element name: POWER BALANCING HO REQUEST REJECTED

Version: 1.0 NetAct name: POWER_BALANCING_HO_REQ_REJ

Description: Number of rejected requests for Power balancing handover due to no better channel available.

Updated: When BSC does not start the power balancing handover procedure because there is no channel available with smaller TX power sum than the source channel.When BSC telecom rejects traffic channel allocation request for power balancing handover because there is not channel available with smaller TX power sum than the source channel.




Operability class:

Related to feature:




DN9813827 227



3.302 001301 / GPRS TER UG REJ DUE LACK TX POWER




Counter ID: 001301 Network element name: GPRS TER UG REJ DUE LACK TX POWER

Version: 1.0 NetAct name: GPRS_TER_UG_REJ_DUE_LACK_POW

Description: Number of rejected territory upgrade requests because there is not enough TX power available.

Updated: When Radio Resource Management rejects a GPRS territory upgrade request of the PCU because there is not enough TX power available.




001174: GPRS TER UPGRD REQ

Operability class:

Related to feature:







228 DN9813827


Id:0900d805808cec53Confidential

Signalling charts of Traffic Measurement

4 Signalling charts of Traffic MeasurementThe following figures show the signalling charts of Traffic Measurement:

Figure 1 Basic call without counters

Immediate assign command

BSC:MS: BTS: MSC:

PagingPaging commandPaging request

Radio access part on CCCH

Paging part

Channel request Channel required

Channel activationChannel activation ack

Immediate assign

DDCH establishment part

Sabm Establish indication Paging response

Ciphering mode complete

SDCCH signalling part

SetupSetupCall proceeding Call proceeding

Assignment requestPhysical context requestPhysical context confirm

Channel activationChannel activation ack

Assignment command

TCH seized, FACCH signalling part

Ua

Sabm Establish indicationUa

Assignment complete Assignment completeRf channel release

Rf channel release ackAlert AlertConnect Connect

Connect ackConnect ack

Conversation phase

Release completeClear command

Clear completeChannel releaseDeactivate SACCHDisc

Ua Release indicationRf channel release

Rf channel release ack

Release by MS

Disconnect DisconnectReleaseRelease

Release complete

Authentification requestAuthentification requestAuthentification response Authentification response

Identification requestIdentification requestIdentification response Identification response

Ciphering mode commandEncryption commandCiphering mode commandCiphering mode complete

DN9813827 229

1 Traffic Measurement Signalling charts of Traffic Measurement


Figure 2 Basic call with counters

230 DN9813827




Figure 3 Basic call with priority subscriber

DN9813827 231



Figure 4 FACCH call setup due to SDCCH congestion without counters

BSC:MS: MSC:BTS:

Mode modify request


Channel activation

Channel activation ack


Immediate assign

SetupSetup

Call proceeding Call proceeding

Assignment request

Mode modify ack

Channel mode modification

Channel mode modification ack

Assignment complete

Alert Alert

Connect Connect


Channel mode modification

Channel mode modification ack

Conversation phase

Release by MS


TCH, FACCH signalling part


Paging part

232 DN9813827




Figure 5 FACCH call setup due to SDCCH congestion with counters

DN9813827 233



Figure 6 FACCH call setup due to SDCCH congestion, no free TCH channel. Optional software directed retry is not activated

234 DN9813827




Figure 7 Normal release


Paging part



Conversation phase

Release by MS

Disconnect Disconnect

ReleaseRelease

Release complete Release complete

Clear command

Channel release

Deactive sacch

Disc

Ua

Release indication

Rf channel rel

Rf channel rel ack

Clear complete


001108

001109

001110

001111

001112

001113

FR TCH speech FR ver 1orFR TCH speech FR ver 2orFR TCH speech FR ver 3orHR TCH speech HR ver 1orHR TCH speech HR ver 2orHR TCH speech HR ver 3

BSC:MS: MSC:BTS:

DN9813827 235



Figure 8 Basic call, no free TCH and queuing or directed retry is not allowed

236 DN9813827




Figure 9 Successful TCH queuing

DN9813827 237



Figure 10 Basic call, no free TCHs, unsuccessful queuing and directed retry not acti-vated

238 DN9813827




Figure 11 TCH assignment failure due to MSC's inability to switch circuit pool

DN9813827 239



Figure 12 Unsuccessful TCH activation

BTS: MSC:MS: BSC:

Assignment failure

Clear command

Channel release

Deactive SACCH

Disc

Ua

Release indication

Clear complete

Basic call signalling, see figure 1

TCH activation fail 001028

SDCCH Rf channel rel

SDCCH Rf channel rel ack

Rf channel rel ack

Physical context request

Assignment request

Physical context confirm

Channel activation

Channel activation nack

Rf channel rel

Failure

TCH transact end due ch act fail 001081

001133

001134

FR TCH transactions failorHR TCH transactions fail


001108

001109

001110

001111

001112

001113

240 DN9813827




Figure 13 Unsuccessful TCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message

MSC:BSC:BTS:MS:

TCH rel due BSS fail 001140

TCH transact end due BSS probl 001012

Start timer T9103



Rf channel rel ack

Assignment failure

Clear command

Channel release

Deactive SACCHDisc

Ua Release indication

Clear complete


Assignment request


Channel activation

Rf channel rel


TCH transact end due Abis fail 001045

TCH transact end due Abis fail 001084

001133

001134


001108

001109

001110

001111

001112

001113


Timer T9103 expires

TCH rel due to BSS fail PH 2-3 001199

DN9813827 241



Figure 14 TCH assignment failure

MSC:BSC:BTS:MS:



Assignment failure

Clear command

Channel release

Deactive SACCHDisc

UaRelease indication

Clear complete

Failure

TCH Rf channel rel ack

Assignment request

Assignment command

Assignment failure

TCH Rf channel release



Channel activation



SDCCH trans end due radio fail 001003

001108

001109

001110

001111

001112

001113


001133

001134


242 DN9813827




Figure 15 TCH assignment failure, MSC sends CLEAR_COMMAND message

MSC:BSC:BTS:MS:



TCH Rf channel rel ack


Paging part


Sabm

Disc


Ua

Channel release

Release indication

TCH Rf channel release

Establish indicationClear command

Clear complete

Deactive SACCH



TCH transact end due A int fail 001051


001108

001109

001110

001111

001112

001113


001133

001134


TCH rel due BSS fail 001140

TCH rel due to BSS fail PH 2-3 001199

DN9813827 243



Figure 16 CONNECTION_FAILURE message with cause transcoder_failure during a call

MSC:BSC:BTS:MS:

Failure

TCH transact end due transc fail 001029

Rf channel rel ack

Conversation phase

Clear request

Disc

Ua

Channel release

Release indication

Rf channel release

Connection failure

Clear command

Clear complete

Deactive SACCH

001108

001109

001110

001111

001112

001113


001127

001128

001129

001130

001131

001132

TCH transc fail FR speech ver 1orTCH transc fail FR speech ver 2orTCH transc fail FR speech ver 3orTCH transc fail HR speech ver 1orTCH transc fail HR speech ver 2orTCH transc fail HR speech ver 3

001133

001134


Drop after TCH assign 001202

Drop TCH asscompl to RFCH rel 001204

244 DN9813827




Figure 17 TRX or TSL is blocked with different causes during a call

Figure TRX or TSL is blocked with different causes during a call: Counters updated with cause LAPD_failure: 001012 and 001046. Counters updated with cause BTS_failure: 001012 and 001047. Counter 001048 is updated with cause USER_actions. Counter 001050 is updated with cause NETW_actions. Counters updated with cause ABIS_failure: 001012, 001045 and 001084. Counter 001108, 001109, 001110, 001111, 001112 or 001113 and counter 001133 or 001134 are always updated with these causes.

MSC:BSC:BTS:MS:

TCH transact end due LAPD fail 001046

TCH Abis probl 001045


TRX / TSL is blocked

Clear complete

Rf channel rel ack

Conversation phase

Clear request

Disc

Ua

Channel release

Rf channel release

Clear command

Deactive SACCH

TCH transact end due BTS fail 001047

TCH transact end due USER act 001048

TCH transact end due NETW act 001050

TCH transact end due Abis int fail 001084

001133

001134


001108

001109

001110

001111

001112

001113


DN9813827 245



Figure 18 SDCCH congestion, FACCH call setup is not activated

BSC:

Unsucc imm ass SDCCH att001155

SDCCH seiz att for MOC001135 or

SDCCH seiz att for MTC

001136

SDCCH attempts

001000

Seiz att with busy SDCCH

001001

MS: MSC:BTS:

Immediate assignment reject

Channel required

Channel request

Paging part


246 DN9813827




Figure 19 Unsuccessful SDCCH activation

BSC:

SDCCH transact end due ch act fail

001072

SDCCH activation failure

001027

MS: MSC:BTS:

Failure

Channel request

Channel required

Channel activation


Rf channel release




Paging part

DN9813827 247



Figure 20 Unsuccessful SDCCH activation, timer expires while waiting for CHANNEL_ACTIVATION_ACK message

MSC:BSC:BTS:MS:

SDCCH transact end dueBSS fail

Start timer T9103

Channel request

Channel required

Channel activation

Paging part

Rf channel release




Timer T9103 expires

SDCCH transact end duefail in Abis int

SDCCH transact end due fail in Abis intduring a call

001002

001033

001075

248 DN9813827




Figure 21 Connection failure during SDCCH assignment

BTS:

Failure

MSC:MS: BSC:

SDCCH transact ended due radio fail

001003


Channel activation



Immediate assign

Connection failure

Channel release

Deactive SACCHDisc

Ua

Release indication

Rf channel release



Paging part


DN9813827 249



Figure 22 SDCCH assignment failure

BTS: MSC:MS: BSC:

SDCCH transact end due fail in A -intduring a call

001078

SDCCH transact end due fail in A -int001034

SDCCH transact end due BSS fail001002

Failure

Assignment request

Channel release

Deactive SACCHDisc

Ua

Release indication

Rf channel release


Assignment failure

Clear command

Clear complete


250 DN9813827




Figure 23 Unsuccessful SDCCH activation, timer expires while waiting for PHYSICAL_CONTEXT_CONFIRM message

MSC:BSC:BTS:MS:



SDCCH transact end due fail in Abis intduring a call

001002

001033

001075

Timer T9108 expires

Start timer T9108

Assignment request


Assignment failure


Clear command

Rf channel release


Channel release

Deactive SACCHDisc


Clear complete

DN9813827 251



Figure 24 TRX/TSL is blocked with different causes during an SDCCH channel acti-vation

Figure TRX/TSL is blocked with different causes during an SDCCH channel activation: Counters updated with cause LAPD_failure: 001002 and 001035. Counters updated with cause BTS_failure: 001002 and 001036. Counter 001037 is updated with cause USER_actions. Counter 001039 is updated with cause NETW_actions. Counters updated with cause ABIS_failure: 001002, 001033 and 001075.

MSC:BSC:BTS:MS:



001002

001033

TRX / TSL is blocked

Channel requestChannel required

Channel activation

Paging part

Rf channel release



SDCCH transaction end dueLAPD fail 001035

SDCCH transact ended dueBTS fail 001036

SDCCH transact end dueuser actions 001037

SDCCH transact end duenetw act fail 001039

SDCCH transact end due fail in Abis intduring a call 001075


252 DN9813827




Figure 25 Successful trunk reservation. Counters updated: 001040, 001041 and basic call counters, see Figure 2.

BSC:

Succ trunk reservations

001041

Trunk reservations

001040

MS: MSC:BTS:


Assignment request


Channel activation


Assignment command



DN9813827 253



Figure 26 Unsuccessful trunk reservation

254 DN9813827




Figure 27 Successful internal intra-cell handover. Counters 001090 and 001091 are updated only with underlay overlay handover.

MSC:BSC:BTS:MS:

TCH requests 001010

Meas report Meas result



HO measurement, Old TCH channel

Channel activation


Assignment command

Assignment command

Sabm Establish indication

Ua

Rr HO performed

Rf channel release


Assignment completeAssignment complete

001137

001138

TCH seiz att for MOCorTCH seiz att for MTC

001064

001065

Att to req HO, que allowedorAtt to req HO, que not allowed

001102 or001103 or001104 or001105

FR TCH requestsHR TCH requestsFR pref TCH requestsHR pref TCH requests

TCH req for underlay/overlay HO 001090

Succ TCH req for HO 001008

TCH seiz for underlay/overlay HO 001091

001106 or001107

FR TCH succ seizHR TCH succ seiz

Succ seiz of FR TCH in int HOwith ch rate changesorSucc seiz of HR TCH in int HOwith ch rate changes

001116

001117

Old TCH channel release

Signalling on new TCH channel

Signalling on old TCH channel

New TCH channel reservation and activation

BTS HO assgn 001197

DN9813827 255



Figure 28 Internal intra-cell handover, successful TCH queuing

Figure Internal intra-cell handover, successful TCH queuing: Counters 001090 and 001091 are updated only with underlay overlay handover. Counters 001142, 001143 and 001144 are updated only if the handover is started by cause urgent_handover. 001145 and 001146 are updated only if the handover is started by cause non_urgent_handover.

MSC:BSC:BTS:MS:

TCH requests 001010

Meas report Meas resultPhysical context request


Channel activation

Rf channel releaseRf channel release ack

001102 or001103 or001104 or001105



001106 or001107




Att to req HO, que allowed 001064

No free TCH, request is set in queue

001120

001121

FR TCH req rej due HR trafficorHR TCH req rej due FR traffic

TCH channel is released, request is taken from queue

HO signalling, see figure 27

001137 or001138

TCH seiz att for MOCTCH seiz att for MTC

HO att set in queue for TCH 001017

Queued urgent HO attempt 001142

001023

001022

Queue denominator 3

Ave queue time of ho attempt

001143

001145

Ave queue time of urgent ho attorAve queue time of non urgent ho att

Queue denominator 4Queue denominator 4

001144 or001146



Succ FR TCH int HO with ch rt chorSucc HR TCH int HO with ch rt ch

001116

001117

256 DN9813827




Figure 29 Unsuccessful internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message

MSC:BSC:BTS:MS:


Start timer T9103

Timer T9103 expires




Channel activation

Call going on the TCH channel

Rf channel release


HO measurement, HO decision


Normal HO counters updated, see figure 27

TCH Abis probl 001045

TCH transact end due Abis int failon new channel

001108

001109

001110

001111

001112

001113



001133

001134

Call continuous on the old TCH channel

001086

DN9813827 257



Figure 30 Unsuccessful internal intra-cell handover, CONNECTION_FAILURE message with cause remote_transcoder_failure comes to the target channel

MSC:BSC:BTS:MS:


Physical context requestPhysical context confirm

Channel activation




TCH transact end due transcfail on target


001133

001134

001031


Call continuous on the old TCH channel

Signalling on FACCH TCH (old channel)

Assignment command

Connection failure

Assignment command

Rf channel release


HO failure HO failure

Signalling on FACCH TCH (new channel), channel release

001108

001109

001110

001111

001112

001113


001127

001128

001129

001130

001131

001132

TCH transc fail FR speech ver 1orTCH transc fail FR speech ver 2orTCH transc fail FR speech ver 3orTCH transc fail HR speech ver 1orTCH transc fail HR speech ver 2orTCH transc fail HR speech ver 3

258 DN9813827




Figure 31 Unsuccessful internal intra-cell handover, timer expires on the source channel, call cleared

MSC:BSC:BTS:MS:

Meas report Meas resultPhysical context request


FR TCH transactions failHR TCH transactions fail

001133 or001134

Start timer T3107


Channel activation


Assignment commandAssignment command


Rf channel release


Clear request

Clear command


Clear complete




Signalling on new TCH channel


Timer T3107 expires

New channel release

001108 or001109 or001110 or001111 or001112 or001113

FR TCH speech FR ver 1FR TCH speech FR ver 2FR TCH speech FR ver 3HR TCH speech HR ver 1HR TCH speech HR ver 2HR TCH speech HR ver 3

001133 or001134

FR TCH transactions failHR TCH transactions fail

Old TCH channel release

TCH transact end due fail on source 001014

001108 or001109 or001110 or001111 or001112 or001113

FR TCH speech FR ver 1FR TCH speech FR ver 2FR TCH speech FR ver 3HR TCH speech HR ver 1HR TCH speech HR ver 2HR TCH speech HR ver 3

DN9813827 259



Figure 32 Unsuccessful underlay overlay internal intra-cell handover, queuing not allowed

BSC: MSC:BTS:MS:





Call continuous on old channel


No free TCH, queueing not allowed

TCH requests 001010

001137

001138

TCH seiz att for MOCorTCH seiz att for MTC

001102

001103

001104

001105

FR TCH requestsorHR TCH requestsorFR pref TCH requestsorHR pref TCH requests

Att to req HO, que not allowed 001065


TCH req rej due to lack 001011

001118

001119

FR TCH req rej due to lackorHR TCH req rej due to lack

001120

001121


HO req fail, queueing not allowed 001069

TCH req for underlay/overlay HOrej due lack 001092

260 DN9813827




Figure 33 Internal intra-cell handover, unsuccessful TCH queuing

Figure Internal intra-cell handover, unsuccessful TCH queuing: Counters 001142, 001143, 001144 and 001147 are updated only if the handover is started by cause urgent_handover. Counters 001145 and 001146 are updated only if the handover is started by cause non_urgent_handover.

MSC:BSC:BTS:MS:

TCH requests 001010




001102 or001103 or001104 or001105




No free TCH, request is set in queue

001120

001121


001137 or001138


HO att set in queue for TCH 001017

Queued urgent HO attempt 001142


Ave queue time of ho attempt 001022

Att to req HO, queueing allowed 001064

Call continous on old TCH channel

No suitable TCH released in time


HO att in queue not served 001025

HO req rej, queueing allowed 001068

001144 or001146

Queue denominator 4Queue denominator 5

Queued urgent HO att not served 001147

001143

001145

Ave queue time of urgent ho attorAve queue time of non urgent ho att

001118 or001119

FR TCH req rej due to lackHR TCH req rej due to lack

DN9813827 261



Figure 34 Internal directed retry

262 DN9813827




Figure 35 Successful internal inter-cell handover

Figure Successful internal inter-cell handover: Counters 001090 and 001091 are updated only with underlay overlay handover.

MSC:BSC:BTS:MS:


Channel activation


HO command

HO command

HO access HO detection

Physical info

Ua

Rr HO performed

Rf channel release


HO complete HO complete

TCH requests 001010


HO measurement, Old TCH channel in the old BTS

Signalling on the old TCH channel in the old BTS

Signalling on the new TCH channel in the new BTS

Old TCH channel release in the old BTS

New TCH channel reservation and activation in the new BTS

001137 or001138


001064 or001065

Att to req HO, que allowedAtt to req HO, que not allowed


001102 or001103 or001104 or001105




001106 or001107


Succ seiz of FR TCH in int HOwith ch rate changesSucc seiz of HR TCH in int HOwith ch rate changes

001116 or

001117

BTS O HO cmd 001196

DN9813827 263



Figure 36 Unsuccessful internal inter-cell handover

MSC:BSC:BTS:MS:


TCH activation fail 001028


Channel activation


New TCH channel reservation and activation in new BTS

Call continuous on the old channel

Rf channel release



New channel release

TCH transact end due TCH actfail in target

001108

001109

001110

001111

001112

001113


001133

001134


001083

264 DN9813827




Figure 37 Successful external handover, target

MSC:BSC:BTS:MS:

TCH requests 001010

HO request

Channel activation


HO request ack

HO access HO detection HO detection

Physical info


Ua

HO complete

Rr

HO complete HO completed

001064

001065

Att to req HO, que allowedorAtt to req HO, que not allowed

001102

001103

001104

001105



001106

001107

FR TCH succ seizorHR TCH succ seiz

DN9813827 265



Figure 38 Successful external handover, source

BTS: MSC:MS: BSC:

FR TCH speech FR ver 1001108 or



HR TCH speech HR ver 1001111 or

HR TCH speech HR ver 2001112 or

HR TCH speech HR ver 3001113

HO command

Rf channel release


HO requiredMeas report Meas result

Clear complete

HO command

HO command

Clear command

MSC O HO cmd 001195

266 DN9813827




Figure 39 Unsuccessful external handover, source BSC, timer expires while waiting for CLEAR_COMMAND message

MSC:BSC:BTS:MS:

Timer T8 expires

Start timer T8


Meas report Meas result HO required

HO command



Clear command

Rf channel release


Clear request

HO commandHO command

Clear complete

Call cleared


TCH transact end due A int failon source

001108

001109

001110

001111

001112

001113


001133

001134


001088

DN9813827 267



Figure 40 Unsuccessful external handover, MS sends a handover failure

MSC:BSC:BTS:MS:


HO request


Channel activation




HO request ack

Clear command

Rf channel release


HO failure HO failure HO failure

Clear complete

HO commandHO commandHO command

New TCH channel reservation and activation in new BSC


Signalling on old BSC, MS sends HO failure

Signalling on new BSC, channel is released



TCH transact end due A int fail onnew

001108

001109

001110

001111

001112

001113


001133

001134


001089

268 DN9813827




Figure 41 Successful traffic reason handover, source

MSC:BSC:BTS:MS:

HO s due to traffic reasons 001052

Rf resource indication

Resource request

Resource indication

HO candidate enquiry

HO required

HO candidate response

HO commandHO commandHO command

Enquiries of traffic reason HO 001053

DN9813827 269



Figure 42 Successful SDCCH internal intra-cell handover

MSC:BSC:BTS:MS:

SDCCH attempts 001000




HO measurement, Old SDCCH channel

Channel activation


Assignment command

Assignment command


Ua

Assignment complete

Rr HO performed

Rf channel release


New SDCCH channel reservation and activation

001135

001136

SDCCH seiz att for MOCorSDCCH seiz att for MTC

Succ SDCCH seiz for HO 001006

Signalling on old SDCCH channel

Signalling on new SDCCH channel

Old SDCCH channel release

BTS HO assgn 001197

270 DN9813827




Figure 43 Unsuccessful SDCCH internal intra-cell handover, timer expires while waiting for CHANNEL_ACTIVATION_ACK message

MSC:BSC:BTS:MS:

Timer T9103 expires

Start timer T9103




Channel activation

HO measurement, old SDCCH channel

Rf channel release



SDCCH transact end due BSSprobl

Signalling continuous on old SDCCH channel

SDCCH transact end due Abisint fail

SDCCH transact end due Abis int failon target

001002

001033

001077

DN9813827 271



Figure 44 Unsuccessful SDCCH internal intra-cell handover, unsuccessful channel activation

BSC:

SDCCH transact end duech act fail on target

001074

SDCCH transact end duech act fail

001027

MS: MSC:BTS:




Channel activation

Rf channel release



HO measurement, old SDCCH channel


Signalling continuous on old SDCCH channel

272 DN9813827




Figure 45 Unsuccessful SDCCH internal intra-cell handover, CONNECTION_FAILURE message comes to the target channel during handover

MSC:BSC:BTS:MS:





Channel activation




UaConnection failure

Signalling continuous on old channel

Rf channel release





SDCCH transact end dueradio fail on target 001005

DN9813827 273



Figure 46 Successful SDCCH internal inter-cell handover

MSC:BSC:BTS:MS:





HO measurement, Old SDCCH channel in old BTS

Channel activation


New SDCCH channel reserv. and activ. in new BTS

Signalling on the old SDCCH channel in the old BTS

HO command

HO command

Signalling on new SDCCH channel in new BTS


Physical info

Ua

Rr HO performed

Old SDCCH channel release in the old BTS

Rf channel release



001135

001136


BTS O HO cmd 001196

274 DN9813827




Figure 47 Unsuccessful SDCCH internal inter-cell handover, BTS sends CONNECTION_FAILURE message

Figure 48 Successful SDCCH external handover target

MSC:BSC:BTS:MS:


Rf channel release



Channel activation

Connection failure




Rf channel release


Clear request

Clear command

Clear complete

SDCCH transact end due radiofail on source 001004

MSC:BSC:BTS:MS:


HO request

Channel activation


HO request ack

HO access HO detection HO detection

Physical info


Ua

HO complete

Rr

HO complete HO completed


DN9813827 275



Figure 49 Successful SDCCH external handover source. No counters updating.

BSC:MS: MSC:BTS:

HO command

Rf channel release


HO required


Clear complete


Clear command

276 DN9813827




Figure 50 Unsuccessful SDCCH external handover, timer expires while waiting for CLEAR_COMMAND message

MSC:BSC:BTS:MS:

SDCCH transact end due A int fail 001034

SDCCH transact end due BSS fail 001002

Timer T8 expires

Start timer T8

HO command

Rf channel release


HO requiredMeas report Meas result

Clear complete


Clear command

Clear request

Signalling on SDCCH source channel


Rf channel release

Clear command

Clear complete

SDCCH transact end due A int failon source

Signalling on SDCCH target channel

SDCCH transact end due BSS fail 001002

SDCCH transact end due A int fail 001034

SDCCH transact end due A int failon target

001079

001080

DN9813827 277



Figure 51 Successful forced release

278 DN9813827




Figure 52 Unsuccessful forced release

DN9813827 279



Figure 53 Unsuccessful forced release with external handover

MSC:BSC:BTS:MS:

TCH requests 001010


HO request

Queuing indication

Priority call going on the TCH channel

Clear command

Rf channel release


HO failure

Clear complete


New TCH channel reservation and activation in new BSC

Att to req HO with forced rel 001062

TCH req with prior subscriber 001095

001102

001103

001104

001105


001120

001121


No suitable TCH for forced release, forced release timer exp ires

001119



HO req rej with forced release 001066


001118

280 DN9813827




Figure 54 Successful forced handover

DN9813827 281



Figure 55 Unsuccessful forced handover

282 DN9813827




Figure 56 Unsuccessful forced handover with external handover

MSC:BSC:BTS:MS:


TCH req with prior subscriber 001095

TCH requests 001010

Att to req HO with forced HO 001063

HO req rej with forced HO 001067


HO request


Queuing indication

New TCH channel reservation

No suitable TCH for forced handover,

Priority call going on the TCH channel


Clear command

Rf channel release


HO failure

Clear complete

001102

001103

001104

001105


001120

001121


001118

001119


forced handover timer expires

and activation in new BSC

DN9813827 283



Figure 57 Reconfiguration from TCH to SDCCH

Figure 58 Normal call

MSC:BSC:BTS:MS:

SDCCH attempt 001000

Channel requestChannel required

Channel activation

Paging part


001135

001136


Reconfiguration from idle TCH to active SDCCH

Dynamic SDCCH reconf attempt 001154

SDCCH succ seiz for imm assign 001007

Basic call signalling continuos, see figure 1

MSC:BSC:BTS:MS:

Succ TCH seiz for ass complete 001148




Assignment complete

Assignment complete

Sabm

Ua

Establish indication

284 DN9813827




Figure 59 Mobile originated HSCSD call setup

MSC:BSC:BTS:MS:

HSCSD req for call setup 001160

Classmark change Classmark update

Setup Setup

Normal signalling

Call proceedingCall proceeding

Channel activation


Assignment request

Physical context requestPhysical context confirm

Channel activation


Assignment command


Assignment complete Assignment completeRf channel release

Rf channel release ackAlert AlertConnect Connect


Release completeClear command

Clear completeChannel release

Deactivate SACCHDisc



Disconnect DisconnectReleaseRelease

Release complete

Normal signalling

HSCSD TCH req with 14,4HSCSD transp TCH req

001156 or001158

001157 or001159

HSCSD succ TCH req with 14,4HSCSD succ transp TCH seiz

HSCSD succ TCH 001162

Counters for TCH request and


Conversation phase

Release by MS

succesful TCH seizures are also updated, see figure 2

seiz for call setup

DN9813827 285



Figure 60 Successful internal inter-cell handover for HSCSD, target cell allocations and activations for three channels

MSC:BSC:BTS:MS:

HSCSD TCH request for HO 001161

HSCSD transp TCH request 001158

HSCSD TCH request with 14,4 001156



HO measurement, Old TCH channel in the old BTS

Channel activation





Physical info

Ua

Rr HO performed

Rf channel release



Channel activation


Channel activation



Normal handover counters are updated, see figure 35

HSCSD succ TCH seiz with 14,4 001157

HSCSD succ transp TCH seiz 001159

HSCSD succ TCH seiz for HO 001163

Signalling on the new TCH channel in the new BTS

Old TCH channel release in the old BTS

286 DN9813827




Figure 61 A CONNECTION_FAILURE message which comes during an HSCSD

MSC:BSC:BTS:MS:

Failure

HSCSD conn rel due to fail 001164

Rf channel rel ack

Conversation phase

Clear request

Disc

Ua

Channel release

Release indication

Rf channel release

Connection failure

Clear command

Clear complete

Deactive SACCH

DN9813827 287



Figure 62 Internal intra-cell direct access from a regular DCCH to the super-reuse TRX. Optional software direct access to super-reuse TRX in IUO activated.

MSC:BSC:BTS:MS:

Succ TCH seiz for dir acc 1165

Assignment request




Channel activation



Assignment command

Assignment command

Ua

Rr

Assignment complete

Rf channel release


Assignment complete Assignment complete

Alert Alert


Connect Connect

Physical context information

Direct access to super-reuse TRX

TCH reservation and activation

Signalling on SDCCH

Signalling on FACCH - TCH

SDCCH release

Connection

Conversation phase

288 DN9813827




Figure 63 Unsuccessful internal intra-cell direct access from regular DCCH to the super-reuse TRX due to lack of resources. Optional software direct access to super-reuse TRX in IUO activated.

MSC:BSC:BTS:MS:

TCH req for dir acc rej due lack 1166

Assignment request




Physical context information

Unsuccessful direct access attempt to super-reuse TRX

Signalling continuous on old channel

DN9813827 289



Figure 64 Timer T3107 expires while waiting for ASSIGNMENT_COMPLETE message

MSC:BSC:BTS:MS:

TCH transact end due radio fail 001013

Timer T3107 expires

Start timer T3107



Rf channel rel ack

Assignment failure

Clear command

Channel release

Deactive SACCHDisc


Clear complete

Physical context requestAssignment request


Channel activation

Rf channel rel




Sabm

Establish indicationUa

001108

001109

001110

001111

001112

001113


001133

001134


TCH rel due radio fail 001139

TCH rel due rad fail PH 2-3 001205

290 DN9813827




Figure 65 Average counter updating

Figure 66 Successful handover due to DADL/B

MSC:BSC:BTS:MS:

Timer is started

After 20 seconds

Timer expires

Timer is started again

After 20 seconds

Timer expires

Average queue length for channelseizure request

Average queue length for channelseizure request

1018

1018

BTS: MSC:MS: BSC:

Succ TCH seiz for DADL/B HO001170

DADL/B start due to exceeded load001172

Channel activation


Assignment request



Signalling

Signalling continues

DN9813827 291



Figure 67 Unsuccessful DADL/B handover due to lack of resources

Figure 68 Successful BSC controlled TRHO

BTS: MSC:MS: BSC:

TCH request in DADL/B HO rejected001171

DADL/B start due to exceeded load001172

Assignment request



Signalling

DR and queuing possible

BTS: MSC:MS: BSC:

Succ TCH seiz for BSC contr TRHO

001168

TCH request for BSC contr TRHO

001167

Channel activation


Normal HO signalling



HO decision

292 DN9813827




Figure 69 Unsuccessful BSC controlled TRHO

BTS: MSC:MS: BSC:

Rej TCH seiz for BSC contr TRHO due to lack

001169

TCH request for BSC contr TRHO

001167

HO decision

New TCH channel reservation

HO ends and signalling continuous on

and activation in the new BTS

the old TCH channel in the old BTS

DN9813827 293



Figure 70 Dropped call between ASSIGNMENT COMPLETE and DISCONNECT

MSC:BSC:BTS:MS:

Paging/initial MS on CCCH

Clear request

Channel release

Clear command

Clear complete

Deactive SACCH

MM signalling

Basic assignment

AlertAlert

ConnectConnect

Connect ack Connect ack

Conversation

Radio Link Failure

Connection failure

DISC

UA

Release indication

RF channel release

001108FR TCH speech FR ver 1orFR TCH speech FR ver 2orFR TCH speech FR ver 3orHR TCH speech HR ver 1orHR TCH speech HR ver 2orHR TCH speech HR ver 3

001109

001110

001111

001112

001113

TCH transact end due radio fail

001012

TCH Abis probl

Drop after TCH assign

Drop TCH asscompl to RFCH rel

001013

TCH transact end due BSS probl

001045

001202

001204

RF channel release ack

294 DN9813827




Figure 71 Dropped call between ASSIGNMENT COMPLETE and RF CHANNEL RELEASE ACK

MSC:BSC:BTS:MS:

Paging/initial MS on CCCH

Channel release

Clear command

Clear complete

Deactive SACCH

MM signalling

Basic assignment

AlertAlert

ConnectConnect

Connect ack Connect ack

Conversation

Timer T3109 expires

DISC

UA

RF channel release ack


001109

001110

001111

001112

TCH transact end due Abis fail

Drop TCH asscompl to RFCH rel

001113

001204

RF channel release

Release by MS

DisconnectDisconnect

ReleaseRelease

Release complete Release complete

DISC

Release indication notreceived

001084

001108

DN9813827 295



Figure 72 Circuit pool switching during call setup, chart 1/2

296 DN9813827




Figure 73 Circuit pool switching during call setup, chart 2/2

DN9813827 297



Figure 74 AMR packing or unpacking handover

MS BTS BSC MSC

MEASUREMENT REPORT MEASUREMENT RESULT

004076 CELL_TCH_TCH_AT

R F C H A N N E L R E L E A S E

R F C H A N N E L R E L E A S E A C K

004142 HO_ATT_FOR_AMR_TO_HR or004143 HO_ATT_FOR_AMR_TO FR

CHANNEL ACTIVATION

CHANNEL ACTIVATION ACK

ASSIGNMENT COMMAND

ASSIGNMENT COMMAND

SABM ESTABLISH INDICATION

UA

ASSIGNMENT COMPLETE ASSIGNMENT COMPLETE

RR

HANDOVER PERFORMED

004073 CELL_TCH_TCH

004018 CELL_SUCC_HO

004205 HO_SUCC_AMR_FR_TO_HR or004206 HO_SUCC_AMR_HR_TO_FR

BSC-internal intra-cell HO started due to AMR

packing or unpacking HO

PHYSICAL CONTEXT CONFIRM

PHYSICAL CONTEXT REQUEST

298 DN9813827




Figure 75 Successful handover type reselection from an internal inter-cell TCH to TCH handover to an external handover due to switching the circuit pool

MS BSC MSC

HANDOVER COMMAND

CLEAR COMMAND

004203 BSC_O_SUCC_HO_TO_EXT

004067 BSC_O_TCH_TCH_AT

004059 BSC_I_TCH_TCH_AT (updated for target cell)

004096 BSC_O_UNSUCC_A_INT_CIRC_TYPE

004099 HO_ATT_DUE_SWITCH_CIRC_POOL

004094 MSC_O_ATT_SWITCH_CIRC_POOL

004052 MSC_O_TCH_TCH_AT

004097 BSC_I_UNSUCC_A_INT_CIRC_TYPE(updated for target cell)

004004 MSC_O_SUCC_HO

004049 MSC_O_TCH_TCH

004095 MSC_O_SUCC_SWITCH_CIRC_POOL

004005 MSC_O_HO_RQ_MSG

004009 MSC_O_HO_COMM

004030 CAUSE_INTFER_DWN

HANDOVER COMMANDHANDOVER COMMAND

MSC switches circuit pool

Decision to start pool switching procedure is made

BSC-internal inter-cell HO started due to high

interference on downlink, for example

BTS

Channel reservation and activation in the target cell

Source-TCH is released

HO signalling in the target cell

HANDOVER REQUIRED (switch circuit pool)

MEASUREMENT RESULTMEASUREMENT REPORT

DN9813827 299



Figure 76 Internal inter-cell handover change to external handover due to circuit pool switching, target-cell

BTSMS BSC MSC

HO decision of the circuit pool switch made in the source cell

HO signalling in the source cell, the MSC sends a HO command

HANDOVER REQUEST

HANDOVER ACCESS HANDOVER DETECTIONHANDOVER DETECTION

HANDOVER COMPLETE HANDOVER COMPLETE HANDOVER COMPLETE

004092 MSC_I_ATT_SWITCH_CIRC_POOL

004046 MSC_I_TCH_TCH_AT

PHYSICAL INFO


UA

RR

004000 MSC_I_SUCC_HO

004043 MSC_I_TCH_TCH

004093 MSC_I_SUCC_SWITCH_CIRC_POOL

CHANNEL ACTIVATION

004202 BSC_I_INT_SUCC_HO_TO_EXT

HANDOVER REQUEST ACKNOWLEDGECHANNEL ACTIVATION ACK

300 DN9813827




Figure 77 Internal intra-cell handover change to external due to circuit pool switching, source side

MS BTS BSC MSC

004076 CELL_TCH_TCH_AT

HO signalling in the target side

Channel reservation and activation in the new target side, HO command from the MSC

HANDOVER COMMAND

004030 CAUSE_INTFER_DWN

004098 HO_UNSUCC_A_INT_CIRC_TYPE

004099 HO_ATT_DUE_SWITCH_CIRC_POOL

004094 MSC_O_ATT_SWITCH_CIRC_POOL




004095 MSC_O_SUCC_SWITCH_CIRC_POOL



HANDOVER COMMANDHANDOVER COMMAND

MEASUREMENT REPORT MEASUREMENT RESULT



BSC-internal intra-cell HO started due to high

interference on downlink, for example

Source-TCH is released

CLEAR COMMAND

HANDOVER REQUIRED (switch circuit pool)



DN9813827 301



Figure 78 Internal intra-cell handover change to external due to circuit pool switching, target side

MS BTS BSC MSC

Ho decision of the circuit pool switch made in the source side

HO signalling in the source side, the MSC sends a HO command

HANDOVER REQUEST

HANDOVER ACCESS

HANDOVER DETECTIONHANDOVER DETECTION

HANDOVER COMPLETE HANDOVER COMPLETE

HANDOVER COMPLETE

004204 INT_SUCC_HO_TO_EXT






PHYSICAL INFO

SABM

ESTABLISH INDICATION

UA

RR

CHANNEL ACTIVATION


HANDOVER REQUEST ACKNOWLEDGE

302 DN9813827




Figure 79 Circuit pool switch during inter-system handover, target-BSC

BTSMS BSC MSC

HANDOVER REQUEST

HANDOVER ACCESS HANDOVER DETECTIONHANDOVER DETECTION

HANDOVER COMPLETE HANDOVER COMPLETE HANDOVER COMPLETE

HANDOVER REQUEST

HO measurements and external HO decision made in the source cell, MSC sends HO request

Signalling on the target cell, connection



004208 MSC_I_WCDMA_SUCC_POOL_SWITCH

CHANNEL ACTIVATION

PHYSICAL INFO


UA

004149 MSC_HO_WCDMA_RAN_SUCC

004153 MSC_GEN_SYS_WCDMA_RAN_HO_REQ

004154 MSC_GEN_SYS_WCDMA_RAN_HO_COM

04144 MSC_TCH_HO_FROM_WCDMA_RAN_ATT

004207 MSC_I_WCDMA_UNSUC_POOL_SWITCH

04144 MSC_TCH_HO_FROM_WCDMA_RAN_ATT

HANDOVER FAILURE (switch circuit pool)

CHANNEL ACTIVATION ACK HANDOVER REQUEST ACKNOWLEDGE

DN9813827 303



Figure 80 Circuit pool switch during external handover, target-BSC

HANDOVER COMPLETE HANDOVER COMPLETE

HO measurements and external HO decision made in source-BSC, the MSC sends HO a request

Signalling on the new BTS, connection





PHYSICAL INFO


UA





HANDOVER REQUEST ACKNOWLEDGE

HANDOVER COMPLETE

BTSMS BSC MSC

HANDOVER ACCESS HANDOVER DETECTION

HO measurements and external HO decision made in the source-BSC, the MSC sends HO a request




004101 MSC_CONTROLLED_IN_HO



CHANNEL ACTIVATION








HANDOVER DETECTION

HANDOVER REQUEST

HANDOVER REQUEST

HANDOVER COMPLETE

HO measurements and external HO decision made in source-BSC, the MSC sends HO a request







UA





BTSMS BSC MSC

HO measurements and external HO decision made in the source-BSC, the MSC sends a HO request




004101 MSC_CONTROLLED_IN_HO










HANDOVER FAILURE (switch circuit pool)

304 DN9813827




Figure 81 BSS Internal Handover with MSC Support - Local Handover

Codec change with non matching codec configuration from FR AMR to HR AMR, target L-BTS2 allows only HR-mode; TC in MGW

L-BTS1 L-BSC MGW MSSL-BTS2

Packet Abis AoIP

MEASUREMENT RESULT

INTERNAL HANDOVER REQUIRED

MEASUREMENT REPORT

L-MS

Um

BSC decides HO required due to e.g. radio network quality.Relevant handover cause counter updated

No matching codec configuration, MSS controlled HO required



004244 BSS_INT_HO_REQ_REQUESTS

INTERNAL HANDOVER COMMAND

004245 BSS_INT_HO_COMMANDS

001010 TCH_REQUEST

057016 TCH_SEIZURES

001008 TCH_HO_SEIZ

001184 TCH_CALL_REQ_FOR_AMR

001102 TCH_FULL_REQ_SUCC_UNSUCC

001104 TCH_FULL_REQ_PREFERRED

CHANNEL ACTIVATION


HANDOVER COMMAND

001196 BSC_O_HO_CMD_ASSGN

HANDOVER ACCESS

HANDOVER DETECTION

PHYSICAL INFO

SABM

ESTABLISH INDICATIONUA

HANDOVER COMPLETE

RR

004248 BSS_INT_HO_SUCCESSFUL

057034 TCH_HO_ASSIGN

CLEAR COMMAND

051013 INTERNAL_INTER_HO_SUCC

057012 INT_INTER_HO_SUCC



RF CHANNEL RELEASE

RF CHANNEL RELEASE ACK

Packet Abis AoIP

004246 BSS_INT_HO_SRC_SUCC

001118 TCH_REJ_REQ_DUE_LACK_FR

HANDOVER COMMAND

HANDOVER COMPLETE

HANDOVER COMPLETE

Um

DN9813827 305



Figure 82 BSS Internal Handover with MSC Support - Distant Handover

Codec change with non matching codec configuration from FR AMR to HR AMR, target L-BTS2 allows only HR-mode; TC in MGW

D-BSCMSS D-BTS2

Packet AbisAoIP

INTERNAL HANDOVER ENQUIRY

D-MS

Um

Packet AbisAoIP Um

D-BTS1


004249 BSS_INT_HO_ENQUIRY





004142 HO_ATT_FOR_AMR_TO_HR

001010 TCH_REQUEST

057016 TCH_SEIZURES

001008 TCH_HO_SEIZ

001184 TCH_CALL_REQ_FOR_AMR

001103 TCH_HALF_REQ_SUCC_UNSUCC

001105 TCH_HALF_REQ_PREFERRED

001107 TCH_HALF_SUCC_SEIZ

001117 TCH_HALF_SEIZ_INT_HO_CH_RATE

001183 HALF_TCH_SEIZ_INTRA_AMR_HO

CHANNEL ACTIVATION


HANDOVER COMMAND

HANDOVER COMMAND


HANDOVER ACCESS

HANDOVER DETECTION

PHYSICAL INFO

SABM


UA

HANDOVER COMPLETE

RR004248 BSS_INT_HO_SUCCESSFUL


CLEAR COMMAND

RF CHANNEL RELEASE


HANDOVER COMPLETE

HANDOVER COMPLETE






306 DN9813827




Figure 83 Intra BSC HO; interface type change from AoIP to AoTDM; TC in MGW

BTS1 BSC MGW MSSBTS2

Packet Abis AoIP

MEASUREMENT RESULT


MEASUREMENT REPORT

MS

Um

BSC decides HO required from IP BTS tolegacy BTS due to e.g. radio network quality

No matching interface type available, MSS controlled HO required






001010 TCH_REQUEST

057016 TCH_SEIZURES

001008 TCH_HO_SEIZ

CHANNEL ACTIVATION


HANDOVER COMMAND


HANDOVER ACCESS

HANDOVER DETECTION

PHYSICAL INFO

SABM


HANDOVER COMPLETE

RR

004248 BSS_INT_HO_SUCCESSFUL


CLEAR COMMAND





RF CHANNEL RELEASE


Abis AoTDM

HANDOVER COMMAND

HANDOVER COMPLETE

HANDOVER COMPLETE

Um

CLEAR COMPLETED



DN9813827 307



Figure 84 TCH Drop Counters 1/3

MS BTS BSC MSC

ASSIGNMENT_REQUEST

Start T9108PHYSICAL_CONTEXT_REQUEST

PHYSICAL_CONTEXT_CONFIRMATION

Start T9103CHANNEL_ACTIVATION

AUTHENTICATION_REQUESTAUTHENTICATION_REQUEST

AUTHENTICATION_RESPONSE AUTHENTICATION_RESPONSE

CIPHERING_MODE_COMMANDENCRYPTION_COMMAND

CIPHERING_MODE_COMMAND

CIPHERING_MODE_COMPLETE CIPHERING_MODE_COMPLETE

SETUPSETUP

CALL_PROCEEDING CALL_PROCEEDING

(TA INFO)

Stop T9108

SDCCH signalling up to TCH seizure

IDENTIFICATION_REQUESTIDENTIFICATION_REQUEST

IDENTIFICATION_RESPONSE IDENTIFICATION_RESPONSE

TCH_RADIO_FAIL 001013

TCH_RF_OLD_HO 001014

TCH_ABIS_FAIL_CALL 001084

TCH_ABIS_FAIL_OLD 001085

TCH_A_IF_FAIL_CALL 001087

TCH_A_IF_FAIL_OLD 001088

TCH_TR_FAIL 001029

TCH_TR_FAIL_OLD 001030

TCH_LAPD_FAIL 001046

TCH_BTS_FAIL 001047

TCH_USER_ACT 001048

TCH_BCSU_RESET 001049

TCH_NETW_ACT 001050

TCH_ACT_FAIL_CALL 001081

001199

TCH_REL_DUE_BSS_FAIL_PH_2_3

CHANNEL_ACTIVATION_ACKStop T9103

ASSIGNMENT_COMMANDStart

T10,T3107

TCH seized

COUNTERS OF TCH DROPSAFTER SEIZURE STARTS

ASSIGNMENT_COMMAND (SDCCH)

308 DN9813827





MS BTS BSC MSC

Start T200SABM (FACCH)

ESTABLISH_INDICATION

UA (FACCH)Stop T200

ASSIGNMENT_COMPLETE

(FACCH)ASSIGNMENT_COMPLETE

Stop T10,T3107

ASSIGNMENT_COMPLETE

COUNTERS OF TCH DROPSAFTER ASSIGNMENT STARTS

RF_CHANNEL_RELEASE_ACK

ALERT

SDCCH signalling: MS moves on TCH, SDCCH released

MS on TCH

Alert

CONNECTCONNECT

CONNECT_ACK

CONNECT_ACK

Conversation

ALERT SDCCH released

001202

DROP_AFTER_TCH_ASSIGN

001205TCH_REL_DUE_RAD_FAIL_PH_2_3

RF_CHANNEL_RELEASE

DN9813827 309




Related topics1 Traffic Measurement


MS BTS BSC MSC

DISCONNECT

TCH released normally by MS

DISCONNECT

RELEASERELEASE

RELEASE COMPLETE RELEASE COMPLETE

CLEAR COMMAND

CLEAR COMPLETE

CHANNEL RELEASE

DEACTIVATE SACCH

RELEASE INDICATION

RF CHANNEL RELEASE

RF CHANNEL ACK

T3109DISC

UA

TCH_RADIO_FAIL 001013

TCH_RF_OLD_HO 001014

TCH_ABIS_FAIL_CALL 001084

TCH_ABIS_FAIL_OLD 001085

TCH_A_IF_FAIL_CALL 001087

TCH_A_IF_FAIL_OLD 001088

TCH_TR_FAIL 001029

TCH_TR_FAIL_OLD 001030

TCH_LAPD_FAIL 001046

TCH_BTS_FAIL 001047

TCH_USER_ACT 001048

TCH_BCSU_RESET 001049

TCH_NETW_ACT 001050

TCH_ACT_FAIL_CALL 001081

DROP_AFTER_TCH_ASSIGN001202

COUNTERS OFSTOPS

TCH DROPSAFTER SEIZURE

COUNTERS OF

ASSIGNMENT STOPS

TCHDROPS AFTER

310 DN9813827


Id:0900d8058081a1d4Confidential

Signalling charts of Dual Transfer Mode

5 Signalling charts of Dual Transfer ModeThe following figures show the signalling charts of Dual Transfer Mode:

Figure 87 MO DTM call establishment

MS BTS BSC MSC

MEASUREMENT REPORT

CHANNEL ACTIVATION


SABM


UA

ASSIGNMENT COMPLETE

RR

HANDOVER PERFORMED

RF CHANNEL RELEASE


106000 MO_DTM_CALL_REQUESTS_INI

DTM REQUEST

MEASUREMENT RESULT



DTM ASSIGNMENT COMMAND

105016 DTM_REQ_1_UL_PS_TSL or105017 DTM_REQ_2_UL_PS_TSL

105009 DTM_ALLOCATIONS_INITIAL

105015 PEAK_DTM_CS_SIMULTAN

105021 DTM_ALLOC_1_UL_PS_TSL or105022 DTM_ALLOC_2_UL_PS_TSL

Start T3107

051189 INTRA_DTM_MO_CS_TO_PS

106018 DTM_ASSIGN_COMMANDS

071038 REPORTING_TIME_BY_DTM_MS

071037 TCH_RESERV_BY_DTM_MS

MS in dedicated mode

PS data transfer in dual transfer mode

Stop T3107

DUMMY RLC BLOCK

UL RLC BLOCK

105026 UL_DTM_TBF_ESTABLISHMENTS

DN9813827 311

1 Traffic Measurement Signalling charts of Dual Transfer Mode


Figure 88 MT DTM call establishment

MS BTS BSC MSC

SABM

UA

RR

105000 MT_DTM_CALL_REQUESTS_INI

SGSN

LLC PDU

MEASUREMENTREPORT MEASUREMENT RESULT



ASSIGNMENT COMPLETE

HANDOVER PERFORMED



CHANNEL ACTIVATION

RF CHANNEL RELEASE




105023 DTM_ALLOC_1_DL_PS_TSL or105024 DTM_ALLOC_2_DL_PS_TSL


051190 INTRA_DTM_MT_CS_TO_PS



105018 DTM_REQ_1_DL_PS_TSL or105019 DTM_REQ_2_DL_PS_TSL


PS data transfer in dual transfer mode

105027 DL_DTM_TBF_ESTABLISHMENTS

(EGPRS) PACKET DOWNLINK ACK/NACK

DL RLC BLOCK


312 DN9813827




Figure 89 DTM call reallocation; too high CS connection interference

MS BTS BSC MSC

MEASUREMENT REPORT

CHANNEL ACTIVATION



SABM


UA

ASSIGNMENT COMPLETE

RRHANDOVER PERFORMED

RF CHANNEL RELEASE



MEASUREMENT RESULT

CS connection controldetects too high CSconnection interference





106006 DTM_REALLO_CS_REQUESTS

MS has a DTM allocation with one UL PS TSL allocation

DTM call continues on the new resources

105010 DTM_REALLOCATIONS



DN9813827 313



Figure 90 DTM call reallocation; inadequate PS connection quality

MS BTS BSC MSC

CHANNEL ACTIVATION


SABMESTABLISH INDICATION

UA

ASSIGNMENT COMPLETE

RR

HANDOVER PERFORMED

RF CHANNEL RELEASE


MEASUREMENT REPORT


PS quality control detectsinadequate quality

MEASUREMENT RESULT





051191 INTRA_DTM_MT_PS_TO_PS



105005 DTM_REALLO_REQ_PS_QUAL

MS has a DTM allocation with one DL PS TSL allocation

DTM call continues on the new resources

105018 DTM_REQ_1_DL_PS_TSL or105019 DTM_REQ_2_DL_PS_TSL


314 DN9813827




Figure 91 DTM call; internal inter-cell handover; CS connection power budget

BTS1 BTS2 BSC MSC

CHANNEL ACTIVATION

HANDOVER ACCESS

MS

PHYSICAL INFO

SABM

UA

RR

DTM INFORMATION

MS has a DTM allocation



MEASUREMENT REPORT

MEASUREMENT RESULT

CS connection control startsa power budget handover

HANDOVER COMMAND

HANDOVER DETECTION


HANDOVER COMPLETE

HANDOVER PERFORMED

RF CHANNEL RELEASE

CS connection continues in the CS territory of the target cell.The DTM call is then re-established in the target cell.

105011 DTM_DURATION_SUM_FR

004199 DTM_CALL_HO_SUCC_TO_DTM_CELL

072202 DL_TBF_RELEASES_DUE_DTM

072201 UL_TBF_RELEASES_DUE_DTM

004198 DTM_CALL_HO_ATT_TO_DTM_CELL

106013 DTM_RELEASES_DUE_CS_HO



HANDOVER COMPLETE

004194 DTM_CALL_HO_FROM_DTM_CELL

DN9813827 315



Figure 92 DTM call; internal inter-cell handover; lack of resources in the PS territory

BTS1 BTS2 BSC MSC

HANDOVER ACCESS

MS

PHYSICAL INFO

SABM

UA

RR

DTM INFORMATION



HANDOVER PERFORMED

CHANNEL ACTIVATION

HANDOVER COMMAND

HANDOVER DETECTION


HANDOVER COMPLETE

HANDOVER COMPLETE

RF CHANNEL RELEASE

004194 DTM_CALL_HO_FROM_DTM_CELL



004195DTM_HO_DUE_LACK_OF_RESOURCES







No free resources in the PS territory


316 DN9813827




Figure 93 DTM call; external handover, source BSC

MS BTS BSC MSC

RF CHANNEL RELEASE


MEASUREMENT RESULT

MEASUREMENT REPORT

HANDOVER REQUIRED

HANDOVER COMMAND

CLEAR COMMAND

CLEAR COMPLETE









MS has a DTM allocation

Channel reservation and activation in the target BSC

HO signalling in the target BSC


DN9813827 317



Figure 94 DTM call; external handover, target BSC

MS BTS BSC MSC

CHANNEL ACTIVATION


HANDOVER ACCESS

HANDOVER DETECTION

PHYSICAL INFO

SABM


UA

HANDOVER COMPLETE

RR

DTM INFORMATION

HANDOVER REQUEST

HANDOVER REQUESTACKNOWLEDGE

External handover decision in the source BSC

HO signalling in the source BSC, the MSC sends a HO command

Old resources released in the source BSC

The DTM call is then re-established in the target cell.CS connection continues in the CS territory of the target cell.

318 DN9813827




Figure 95 DTM call release initiated by the MS

MS BTS BSC MSC

DISCONNECT

RELEASE

RELEASE COMPLETE

CLEAR COMMAND

106012 DTM_RELEASES_DUE_CS_RELEASE

CLEAR COMPLETE

CHANNEL RELEASE

DEACTIVATE SACCH

UA

DISC

RELEASE INDICATION

RF CHANNEL RELEASE


MS has a DTM allocation with ongoing UL and/or DL TBFs






START TIMER T3111

TIMER T3111 EXPIRES

DN9813827 319



Figure 96 DTM call release; packet data transfer end

MS BTS BSC MSC

SABM

UA

106011 DTM_RELEASES_DUE_PS_RELEASE

SGSN

Last LLC PDU

RR

DL Data Frame (final block), polling

UNACK MODE: Packet Control Ack

ASSIGNMENT COMMAND


ASSIGNMENT COMPLETE

HANDOVER PERFORMED


ACK MODE: (EGPRS) Packet DL Ack /Nack (final ack)



CHANNEL ACTIVATION

RF CHANNEL RELEASE

051192 INTRA_DTM_PS_TO_CS




CS connection continues in the CS territory


RR


320 DN9813827




Figure 97 DTM REQUEST rejected when IMSI data not available

MS BTS BSC MSC

CHANNEL REQUEST

CHANNEL ACTIVATION


IMMEDIATE ASSIGNMENT


UA

CLASSMARK CHANGE

CHANNEL ACTIVATION


ASSIGNMENT COMMAND


UA

ASSIGNMENT COMPLETE

DTM REQUEST

RF CHANNEL RELEASE


CONNECT ACK

CONNECT

DTM REJECT

106002 MO_DTM_CALL_REJECTS_INI

GPRS INFORMATION

SETUP

CALL PROCEEDING

ALERT

RR

SGSN

LLC PDU

CM SERVICE REQUEST

CLASSMARK UPDATE

COMMON ID (not received)


106017 DTM_IMSI_NOT_AVAILABLE



Authentication, identity request and ciphering

MS continues in dedicated mode.

ASSIGNMENT REQUEST

DN9813827 321



Figure 98 Unsuccessful MO DTM; activation of a CS TCH in the PS territory fails, timer expires while waiting for CHANNEL ACTIVATION ACK

MS BTS BSC

MEASUREMENT REPORT

CHANNEL ACTIVATION




CHANNEL ACTIVATION ACK (not received)

Start T9103

T9103 expires

RF CHANNEL RELEASE


DTM REQUEST

MEASUREMENT RESULT




106002 MO_DTM_CALL_REJECTS_INI

CS call continues on the old TCH channel


322 DN9813827




Figure 99 Unsuccessful MT DTM; activation of a CS TCH in the PS territory fails, timer expires while waiting for CHANNEL ACTIVATION ACK

SGSNMS BTS BSC

MEASUREMENT REPORT

CHANNEL ACTIVATION

Start T9103

T9103 expires

RF CHANNEL RELEASE


105000 MT_DTM_CALL_REQUESTS_INI

DL LLC PDU

MEASUREMENT RESULT


CHANNEL ACTIVATION ACK (not received)


105019 DTM_REQ_2_DL_PS_TSL105018 DTM_REQ_1_DL_PS_TSL or


105002 MT_DTM_CALL_REJECTS_INI




DN9813827 323



Figure 100 Unsuccessful MT DTM; DTM ASSIGNMENT FAILURE received

MS BTS BSC

SABM


UA

DTM ASSIGNMENT FAILURE

RF CHANNEL RELEASE


RR


106008 DTM_ASSIGN_FAILURES_INI



MT DTM call establishment started; see MT DTM scenario untilDTM ASSIGNMENT COMMAND in figure MT DTM call establishment



324 DN9813827




Figure 101 Timer T3107 expires while waiting for ASSIGNMENT COMPLETE

MS BTS BSC MSC

SABM


RF CHANNEL RELEASE


RF CHANNEL RELEASE


106010 MS_LOST_DURING_ASSIGNMENT

CLEAR REQUEST

CLEAR COMMAND

CLEAR COMPLETE


UA

ASSIGNMENT COMPLETE (not received)

T3107 expires




Release of the new TCH channel

Release of the old TCH channel

MO or MT DTM call establishment started; see MT DTM scenario untilDTM ASSIGNMENT COMMAND in figure MT DTM call establishment

Start T3107



DN9813827 325



Figure 102 DTM call reallocation failure; DTM ASSIGNMENT FAILURE received

MS BTS BSC



MEASUREMENT REPORT

CHANNEL ACTIVATION


RR

106009 DTM_ASSIGN_FAILURES_REALLO

RF CHANNEL RELEASE



PS quality control detectsinadequate quality

MEASUREMENT RESULT


DTM ASSIGNMENT FAILURE




DTM call continues on the old resources



326 DN9813827




Figure 103 DTM CS connection drops after ASSIGNMENT COMPLETE; CONNEC-TION FAILURE received

MS BTS BSC MSC

HANDOVER PERFORMED

DISC

CLEAR COMMAND

CHANNEL RELEASE

DEACTIVATE SACCH

UA


RF CHANNEL RELEASE

RELEASE INDICATION

CLEAR COMPLETE

CONNECTION FAILURECLEAR REQUEST

001234 DROP_DTM_TCH_ASCMPL_RFCH_REL

Radio Link Failure detected

ASSIGNMENT COMPLETE

MS has a DTM allocation with ongoing UL and/or DL TBFs;for example, see figure MO DTM call establishment

001233 DROP_AFTER_DTM_TCH_ASSIGN




072202 DL_TBF_RELEASES_DUE_DTM072201 UL_TBF_RELEASES_DUE_DTM or


RF CHANNEL RELEASE

106014 DTM_RELEASES_DUE_OTHER

051189 INTRA_DTM_MO_CS_TO_PS



DN9813827 327



Figure 104 DTM CS connection drops after ASSIGNMENT COMPLETE; RELEASE INDICATION not received

MS BTS BSC MSC

RELEASE

RELEASE COMPLETE

CLEAR COMMAND

CHANNEL RELEASE

DEACTIVATE SACCH SCCP RELEASE COMPLETE

SCCP RELEASE

DISCONNECT


RF CHANNEL RELEASE


DISC (not received)

RELEASE INDICATION (not received)

T3109 expires

Start T3109

MS has a DTM allocation with ongoing UL and/or DL TBFs; for example, see figureMO DTM call establishment




CLEAR COMPLETE

106012 DTM_RELEASES_DUE_CS_RELEASE



328 DN9813827




Figure 105 Unsuccessful DTM call reallocation; timer T3107 expires while waiting for ASSIGNMENT COMPLETE

MS BTS BSC MSC

CHANNEL ACTIVATION


SABM


MEASUREMENT REPORT


T3107 expires

RF CHANNEL RELEASE


RF CHANNEL RELEASE


CLEAR REQUEST

CLEAR COMMAND

CLEAR COMPLETE

106024 MS_LOST_DURING_REALLOCATION




T3111 expires

PS quality control detects inadequate quality


105018 DTM_REQ_1_DL_PS_TSL or

105019 DTM_REQ_2_DL_PS_TSL

105023 DTM_ALLOC_1_DL_PS_TSL or

105024 DTM_ALLOC_2_DL_PS_TSL

001233 DROP_AFTER_DTM_TCH_ASSIGN


Release of the old TCH channel

Release of the new TCH channel

MS has a DTM allocation with one DL PS TSL allocation


DTM ASSIGNMENT COMMAND DTM ASSIGNMENT COMMAND


MEASUREMENT RESULT


ASSIGNMENT COMPLETE (not received)

DN9813827 329



Figure 106 DTM TBF assignment failure; UL RLC block not received

MS BTS BSC MSC

CHANNEL ACTIVATION


UL RLC block (not received)



MS requests a UL TBF

dummy RLC block

Expiry of DTM_CALL_ASSIGN_TIMER

105008 DTM TBF ASSIGNMENT FAILURES


ASSIGNMENT COMMAND


ASSIGNMENT COMPLETE

HANDOVER PERFORMED

RF CHANNEL RELEASE

051198 INTRA_DTM_PS_TO_CS



RR

106011 DTM_RELEASES_DUE_PS_RELEASE


105016 DTM_REQ_1_UL_PS_TSL or

105017 DTM_REQ_2_UL_PS_TSL

105021 DTM_ALLOC_1_UL_PS_TSL or

105022 DTM_ALLOC_2_UL_PS_TSL

105015 PEAK_DTM_CS_SIMULTANUA

MEASUREMENT RESULT

ASSIGNMENT COMMAND

dummy RLC block

ASSIGNMENT COMPLETEASSIGNMENT COMPLETE

CS connection continues in the CS territory

DTM ASSIGNMENT COMMAND DTM ASSIGNMENT COMMAND







CHANNEL ACTIVATION


MS in dedicated mode, MO call

DTM REQUEST DTM REQUEST

MEASUREMENT REPORT

RR

SABM

ASSIGNMENT COMPLETE

Start DTM_CALL_ASSIGN_TIMER

330 DN9813827




Figure 107 DTM-capable MS paging

Related topics

• 1 Traffic Measurement • Counters of Traffic Measurement

• 4 Handover Measurement • Counters of Handover Measurement

• 51 BSC Level Clear Code (PM) Measurement • Counters of 51 BSC Level Clear Code (PM) Measurement

• 71 MS Capability Indication Measurement • Counters of MS Capability Indication Measurement

• 72 Packet Control Unit Measurement • Counters of Packet Control Unit Measurement

• 105 PS DTM Measurement • Counters of PS DTM Measurement

• 106 CS DTM Measurement • Counters of CS DTM Measurement

Documents

1 Traffic Measurement_RG20