Nokia ANSI ISUP Interface

Nokia ANSI ISUP InterfaceDescription and Statement ofCompliance Document

DN0692107Issue 1-0 en

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MSCDOCM14PDFCDMSC/HLR, Rel. M14.0, Product Documentation,v.2

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2 (123) # Nokia Siemens Networks DN0692107Issue 1-0 en

Nokia ANSI ISUP Interface Description and Statement of ComplianceDocument

Contents

Contents 3

List of tables 6

Summary of changes 11

1 Introduction 13

2 Interface modifications 152.1 Changes of the interface since the previous release 15

3 Interface description 173.1 Message 173.2 Parameters 213.3 ISDN user part messages and codes 253.3.1 Address complete (ACM), (ANSI T1.113.3, Table 5) 263.3.2 Answer (ANM), (ANSI T1.113.3, Table 6) 263.3.3 Call progress (CPG), (ANSI T1.113.3, Table 6A) 273.3.4 Circuit query response (CQR), (ANSI T1.113.3, Table 6B) 283.3.5 Circuit reservation (CRM), (ANSI T1.113.3, Table 6C) 293.3.6 Circuit validation response (CVR), (ANSI T1.113.3, Table 6D) 293.3.7 Closed User Group selection and validation request (CSVR), (ANSI

T1.113.3, Table 7) 303.3.8 Closed User Group selection and validation response (CSVS), (ANSI

T1.113.3, Table 8) 303.3.9 Confusion (CFN), (ANSI T1.113.3, Table 8A) 303.3.10 Continuity (COT), (ANSI T1.113.3, Table 9) 303.3.11 Exit (EXM), (ANSI T1.113.3, Table 9A) 313.3.12 Facility (FAC), (ANSI T1.113.3, Table 9B) 313.3.13 Facility information (FAI), (ANSI T1.113.3, Table 10) 313.3.14 Facility reject (FRJ), (ANSI T1.113.3, Table 11) 323.3.15 Information (INF), (ANSI T1.113.3, Table 12) 323.3.16 Information request (INR), (ANSI T1.113.3, Table 13) 323.3.17 Initial address (IAM), (ANSI T1.113.3, Table 14) 333.3.18 Release (REL), (ANSI T1.113.3, Table 14A) 353.3.19 Subsequent address (SAM), (ANSI T1.113.3, Table 15) 353.3.20 Forward transfer (FOT), (ANSI T1.113.3, Table 17) 353.3.21 Suspend Message(SUS), Resume Message (RES), (ANSI T1.113.3,

Table 17A) 363.3.22 Delayed Release (ANSI T1.113.3, Table 17B) 363.3.23 Blocking (BLO), Blocking acknowledgement Message (BLA), Continuity

Check Request (CCR), Reset Circuit Message (RSC), UnblockingMessage (UBL), Unblocking Acknowledgement Message (UBA),Unequipped Circuit Identification Code Message (UCIC), (ANSIT1.113.3, Table 18) 37

3.3.24 Circuit Reservation Acknowledgement (CRA), (ANSI T1.113.3, Table18) 37

3.3.25 Loop Back Acknowledgement Message (LPA), Release Complete (RLC),



Contents

(ANSI T1.113.3, Table 18) 383.3.26 Overload (OLM), (ANSI T1.113.3, Table 18) 383.3.27 Call Modification Completed Message (CMC), Call Modification Reject

Message (CMRJ), Call Modification Request Message (CMR), (ANSIT1.113.3, Table 19) 38

3.3.28 Circuit Group Blocking Message (CGB), Circuit group BlockingAcknowledgement Message (CGBA), Circuit Group UnblockingMessage (CGU), Circuit Group Unblocking AcknowledgementMessage (CGUA), (ANSI T1.113.3, Table 20) 38

3.3.29 Circuit Group Reset Message (GRS) 1), Circuit Group ResetAcknowledgement Message (GRA) 2), (ANSI T1.113.3, Table 21) 39

3.3.30 Circuit Group Query Message (CQM), (ANSI T1.113.3, Table 21) 403.3.31 Facility Accepted Message (FAA), Facility Deactivated Message (FAD),

Facility Request Message (FAR), (ANSI T1.113.3, Table 22) 403.3.32 Pass-Along Message (PAM), (ANSI T1.113.3, Table 23) 403.3.33 Circuit Validation Test (CVT), (ANSI T1.113.3, Table 18) 413.4 ISDN user part parameters 413.4.1 Access Transport (ATP) (ANSI T1.113 3.1A) 413.4.2 Automatic Congestion Level (ACL) (ANSI T1.113 3.2A) 423.4.3 Backward Call Indicator (ANSI T1.113 3.3) 423.4.4 Backward Closed User Group (CUG) Indicators 453.4.5 Business Group (ANSI T1.113 3.3A) 453.4.6 Call Modification Indicators (ANSI T1.113 3.4) 473.4.7 Call Reference (ANSI T1.113 3.5) 473.4.8 Called Party Number (ANSI T1.113 3.6) 483.4.9 Calling Party Number (ANSI T1.113 3.7) 503.4.10 Calling Party Category (ANSI T1.113 3.8) 533.4.11 Carrier Identification (ANSI T1.113 3.8A) 553.4.12 Carrier Selection Information (ANSI T1.113 3.8B) 563.4.13 Cause Indicators (ANSI T1.113 3.9) 573.4.14 Charge Number (ANSI T1.113 3.10) 623.4.15 Circuit Group Characteristic Indicator (ANSI T1.113 3.10A) 653.4.16 Circuit Assignment Map (ANSI T1.113 3.10B) 653.4.17 Circuit Group Supervision Message Type Indicator (ANSI T1.113 3.11) 653.4.18 Circuit Identification Name (ANSI T1.113 3.11A) 663.4.19 Circuit State Indicator (ANSI T1.113 3.11B) 673.4.20 Circuit Validation Response Indicator (ANSI T1.113 3.11C) 673.4.21 Closed User Group Check Response Indicators (ANSI T1.113 3.12) 673.4.22 Closed User Group Interlock Code (ANSI T1.113 3.13) 683.4.23 Common Language Location Identification (CLLI) code (ANSI T1.113

3.13A) 683.4.24 Connected Number (ANSI T1.113 3.14A) 683.4.25 Connection Request (ANSI T1.113 3.15) 693.4.26 Continuity Indicators (ANSI T1.113 3.16) 693.4.27 Egress Service (ANSI T1.113 3.16A) 693.4.28 End Of Optional Parameters Indicator (ANSI T1.113 3.17) 703.4.29 Event information (ANSI T1.113 3.17A) 703.4.30 Facility Indicator (ANSI T1.113 3.18) 713.4.31 Facility Information Indicators (ANSI T1.113 3.19) 713.4.32 Forward Call Indicators (ANSI T1.113 3.20) 713.4.33 Generic Address (ANSI T1.113 3.20A) 733.4.34 Generic Digits (ANSI T1.113 3.20B) 77



3.4.35 Generic Name (ANSI T1.113 3.20C) 783.4.36 Hop Counter (ANSI T1.113 3.20D) 783.4.37 Index (ANSI T1.113 3.21) 783.4.38 Information Indicators (ANSI T1.113 3.22) 783.4.39 Information Request Indicators (ANSI T1.113 3.23) 803.4.40 Jurisdiction Information (ANSI T1.113 3.23A) 813.4.41 Nature of Connection Indicators (ANSI T1.113 3.24) 813.4.42 Network Transport (ANSI T1.113 3.24A) 833.4.43 Notification Indicator (ANSI T1.113 3.24B) 833.4.44 Operator Services Information (ANSI T1.113 3.24D) 853.4.45 Optional Backward Call Indicators (ANSI T1.113 3.24C) 873.4.46 Optional Forward Call Indicators (ANSI T1.113 3.25) 883.4.47 Original Called Number (ANSI T1.113 3.26) 883.4.48 Originating Line Information (ANSI T1.113 3.26A) 913.4.49 Outgoing Trunk Group Number (ANSI T1.113 3.26B) 923.4.50 Precedence (ANSI T1.113 3.26C) 923.4.51 Range and Status (ANSI T1.113 3.27) 923.4.52 Redirecting Number (ANSI T1.113 3.27A) 943.4.53 Redirection Information (ANSI T1.113 3.29) 963.4.54 Redirection Number (ANSI T1.113 3.29A) 973.4.55 Remote Operations (ANSI T1.113 3.29B) 973.4.56 Service Activation (ANSI T1.113 3.29C) 983.4.57 Service Code Indicator (ANSI T1.113 3.29D) 983.4.58 Signalling Point Code (ANSI T1.113 3.30) 983.4.59 Special Processing Request (ANSI T1.113 3.30A) 983.4.60 Subsequent Number (ANSI T1.113 3.31) 993.4.61 Suspend/Resume Indicators (ANSI T1.113 3.31A) 993.4.62 Transaction Request (ANSI T1.113 3.31B) 993.4.63 Transit Network Selection (ANSI T1.113 3.31C) 1003.4.64 Transmission Medium Requirements (ANSI T1.113 3.32) 1023.4.65 Transmission Medium Used (ANSI T1.113 3.32) 1023.4.66 User Service Information Prime (ANSI T1.113 3.33A) 1023.4.67 User Service Information (ANSI T1.113 3.33) 1033.4.68 User-To-User Indicators (ANSI T1.113 3.34) 1033.4.69 User-To-User Information (ANSI T1.113 3.35) 1043.4.70 Calling Geodetic Location (ANSI T1.628. *) 1043.4.71 Global Call Reference (Nokia specific) 1063.5 Signalling procedures 1063.5.1 Timers in ANSI ISUP 1163.5.2 Priority Assignment For ISUP Messages 1183.6 Performance Objectives in the ISDN Application (T1.113.5) 1193.7 Interworking with other signalling systems or user parts 119

4 Support protocol description 121

References 123



Contents

List of tables

Table 1. Messages 17

Table 2. Parameters 21

Table 3. Address complete (ACM) 26

Table 4. Answer (ANM) 26

Table 5. Call progress (CPG) 27

Table 6. Circuit group query response (CQR) 28

Table 7. Circuit reservation (CRM) 29

Table 8. Circuit validation response (CVR) 29

Table 9. Confusion Message (CFN) 30

Table 10. Continuity Message (COT) 30

Table 11. Exit Message (EXM) 31

Table 12. Facility (FAC) 31

Table 13. Information Message (INF) 32

Table 14. Information Request (INR) 32

Table 15. Initial Address Message (IAM) 33

Table 16. Release Message (REL) 35

Table 17. Forward Transfer Message (FOT) 35

Table 18. Suspend Message (SUS), Resume Message (RES) 36

Table 19. Blocking Message (BLO), Blocking Acknowledgement Message (BLA),Continuity Check Request (CCR), Reset Circuit Message (RSC),Unblocking Message (UBL), Unblocking Acknowledgement Message(UBA), Unequipped Circuit Identification Code Message (UCIC) 37

Table 20. Circuit Reservation Acknowledgement (CRA) 37

Table 21. Loop Back Acknowledgement Message (LPA), Release Complete(RLC) 38

Table 22. Circuit Group Blocking Message (CGB), Circuit Group BlockingAcknowledgement Message (CGBA), Circuit Group UnblockingMessage (CGU), Circuit Group Unblocking AcknowledgementMessage (CGUA) 38

Table 23. Circuit Group Reset Message (GRS) , Circuit Group ResetAcknowledgement Message (GRA) 39



Table 24. Circuit Group Query Message (CQM) 40

Table 25. Pass-Along Message (PAM) 40

Table 26. Circuit Validation Test (CVT) 41

Table 27. Access Transport 41

Table 28. Automatic Congestion Level 42

Table 29. Backward Call Indicator 42

Table 30. Backward Closed User Group (CUG) indicators 45

Table 31. Business Group 45

Table 32. Call Reference 47

Table 33. Called Party Number (CdPN) 48

Table 34. Calling Party Number (CgPN) 50

Table 35. Calling Party Category (CPC) 53

Table 36. Carrier Identification 55

Table 37. Carrier Selection Information 56

Table 38. Cause Indicators 57

Table 39. Charge Number 62

Table 40. Circuit-Group-Characteristic Indicator (CGC ) 65

Table 41. Circuit Assignment Map 65

Table 42. Circuit Group Supervision Message Type Indicator 65

Table 43. Circuit Identification Name 66

Table 44. Circuit State Indicator 67

Table 45. Circuit Validation Response Indicator 67

Table 46. Closed Usergroup Interlock Code (CUG indication ) 68

Table 47. Common Language Location Identification (CLLI) code 68

Table 48. Connection Request 69

Table 49. Continuity Indicators 69

Table 50. Egress Service 69

Table 51. End of Optional Parameters Indicator 70

Table 52. Event Information 70



List of tables

Table 53. Forward Call Indicators 71

Table 54. Generic Address 73

Table 55. Generic Digits 77

Table 56. Generic Name 78

Table 57. Hop Counter 78

Table 58. Information Indicators 78

Table 59. Information Request Indicators 80

Table 60. Jurisdiction Information 81

Table 61. Nature of Connection Indicators 81

Table 62. Network Transport 83

Table 63. Notification Indicator 83

Table 64. Operator Services Information 85

Table 65. Optional Backward Call Indicators 87

Table 66. Optional Forward Call Indicators 88

Table 67. Original Called Number 88

Table 68. Originating Line Information 91

Table 69. Outgoing Trunk Group Number 92

Table 70. Precedence 92

Table 71. Range and Status 92

Table 72. Redirecting Number 94

Table 73. Redirection Information 96

Table 74. Remote Operations 97

Table 75. Service Activation 98

Table 76. Service Code Indicator 98

Table 77. Special Processing Request 98

Table 78. Suspend/Resume Indicators 99

Table 79. Transaction Request 99

Table 80. Transit Network Selection 100

Table 81. Transmission Medium Used 102



Table 82. User Service Information Prime 102

Table 83. User Service Information 103

Table 84. User-To-User Indicators 103

Table 85. User-To-User Information 104

Table 86. Calling Geodetic Location 104

Table 87. Global Call Reference 106

Table 88. Signalling Procedures 106

Table 89. Timers in ANSI ISUP 116

Table 90. Priority Assignment For ISUP Messages 118



List of tables



Summary of changes

Changes between document issues are cumulative. Therefore, the latestdocument issue contains all changes made to previous issues.

Changes made in issue 1-0

This is the first issue of this document. This document replaces the earlierNokia ANSI ISUP Interface Description and Statement of ComplianceDocument customer specific documents.



Summary of changes



1 Introduction

This document specifies the interface of the American National StandardsInstitute ISDN User Part (ANSI ISUP) between Nokia's DX 200 MSC/MSSand Public Switched Telephone Network (PSTN) or Integrated ServicesDigital Network (ISDN), MSC/MSS and external Specialised ResourcePoint (SRP).

The document also introduces optional features that do not belong to thebasic software build. Some of the optional features are only applicable inNokia MSC/MSS network between two MSCs/MSSs.

The ISDN User Part (ISUP) is the Signalling System No.7 protocol whichprovides the signalling functions required to support basic bearer servicesand supplementary services for voice and non-voice applications in theISDN.

The ISDN User Part uses the services provided by the Message TransferPart (MTP) for the transfer of information between the ISDN User Parts.

This document covers the ANSI ISUP of the national Signalling System No7 with the application of the ANSI T1.113-2000 - Signalling System No. 7(SS7) - Integrated Services Digital Network (ISDN) User Part (Revision ofT1.113-1995; includes two Supplements: T1.113a-2000 & T1.113b-2001)in the USA.

Some items have been checked in the Bellcore's specifications BellcoreTR-NPL-000145, Issue 2, December 1993: Compatibility Information forInterconnection of a Wireless Services Provider and a Local ExchangeCarrier Network and Bellcore GR-317-CORE, Issue 1, February 1994:Switching System Generic Requirements for Call Control Using theIntegrated Services Digital Network User Part (ISDNUP)

The following abbreviations are used in the tables below:



Introduction

S supported

NS not supported

PS partially supported

The italics font style used in the table indicates a message or parameterthat exists in ANSI ISUP T1.113 but not in ITU.



2 Interface modifications

2.1 Changes of the interface since the previous release

There are no changes on the ISUP Interfaces since the previous release.



Interface modifications



3 Interface description

3.1 Message

Table 1. Messages

Message Abbr. Code Ref. ANSIT1.113.3

ANSIusage

Nokia'ssupport forsendingexchange

Nokia'ssupport forreceivingexchange

Nokia'ssupportforTransitexchange

AddressComplete

ACM 06 Table 5 S S S S

Answer ANM 09 Table 6 S S S S

Blocking BLO 13 Table 18 S S S NS 4)

BlockingAcknowledgement

BLA 15 Table 18 S S S NS 4)

CallModificationCompleted

CMC 1D Table 19 NS NS NS NS

CallModificationRejection

CMRJ 1E Table 19 NS NS NS NS

CallModificationRequest

CMR 1C Table 19 NS NS NS NS

Call Progress CPG 2C Table 6A S S S S

Circuit GroupBlocking

CGB 18 Table 20 S S S NS 4)



Interface description

Table 1. Messages (cont.)


ANSIusage




Circuit GroupBlockingAcknowledgement

CGBA 1A Table 20 S S S NS 4)

Circuit GroupReset

GRS 17 Table 21 S S S NS 4)

Circuit GroupResetAcknowledgement

GRA 29 Table 21 S S S NS 4)

Circuit GroupUnblocking

CGU 19 Table 20 S S S NS 4)

Circuit GroupUnblockingAcknowledgement

CGUA 1B Table 20 S S S NS 4)

Circuit Query CQM 2A Table 21 S NS S NS 4)

Circuit QueryResponse

CQR 2B Table 6B S S S NS 4)

CircuitReservation 2)

CRM EA Table 6C S NS NS NS

CircuitReservationAcknowledgement 2)

CRA E9 Table 18 S NS NS NS

CircuitValidationResponse

CVR EB Table 6D S S NS NS 4)

CircuitValidation Test

CVT EC Table 18 S NS S NS 4)

Closed UserGroupSelection AndValidationRequest

CSVR 25 Table 7 NS NS NS NS





ANSIusage




Closed UserGroupSelection AndValidationResponse

CSVS 26 Table 8 NS NS NS NS

Confusion CFN 2F Table 8A S S NS NS

Connect CON 07 NS NS NS 1) NS

Continuity COT 05 Table 9 S S S NS 4)

ContinuityCheck Request

CCR 11 Table 18 S S 3) S NS 4)

DelayedRelease

DRS 27 Table 17B NS NS NS 1) NS

Exit EXM ED Table 9A S NS S NS

Facility FAC 33 Table 9B S NS NS NS

FacilityAccepted

FAA 20 Table 22 NS NS NS NS

FacilityDeactivated

FAD 22 Table 22 NS NS NS NS

FacilityInformation

FAI 23 Table 10 NS NS NS NS

FacilityRejection

FRJ 21 Table 11 NS NS NS NS

Facility Request FAR 1F Table 22 NS NS NS NS

ForwardTransfer

FOT 08 Table 17 S NS NS S

Information INF 04 Table 12 S S S S

InformationRequest

INR 03 Table 13 S S S S

Initial Address IAM 01 Table 14 S S S S

Loop BackAcknowledgement

LPA 24 Table 18 S S S 3) S

NetworkResourceManagement

NRM 32 NS NS NS NS






ANSIusage




Overload OLM 30 Table 18 NS NS S NS

Pass-Along PAM 28 Table 23 S NS NS NS

Release REL 0C Table 14A S S S S

ReleaseCompleted

RLC 10 Table 18 S S S S

Reset Circuit RSC 12 Table 18 S S S NS 4)

Resume RES 0E Table 17A S NS S S

Segmentation 38 NS NS NS NS

SubsequentAddress

SAM 02 Table 15 NS NS NS 1) NS

Suspend SUS 0D Table 17A S S S S

Unblocking UBL 14 Table 18 S S S NS 4)

UnblockingAcknowledgement

UBA 16 Table 18 S S S NS 4)

UnequippedCIC

UCIC 2E Table 18 S S S NS 4)

User PartAvailable

UPA 35 NS NS NS NS

User Part Test UPT 34 NS NS NS NS

User-To-UserInformation

USR 2D NS NS NS NS

1) CFN message is sent if received.

2) Used only between IXCs (Bellcore).

3) Additional hardware (HW) is required (CASU units) ifsending is supported.

4) These messages are not supported in transitbecause they are point-to-point link-oriented.



3.2 Parameters


OPT optional feature

OPT1 optional feature, can only be used in own network.

Table 2. Parameters

Parameter Ref. ANSIT1.113.3

Code ANSIusage




Access Transport 3.1A 03 S S S S

AutomaticCongestion Level

3.1B 27 S OPT S NS 3)

Backward CallIndicators

3.3 11 S S S S

Backward CUGIndicators

D0 NS OPT1 OPT1 OPT1

Business Group 3.3A C6 S NS NS S

Call ModificationIndicators

3.4 17 NS NS NS NS

Call Reference 3.5 01 S NS NS S

Called PartyNumber

3.6 04 S S S S

Calling PartyNumber

3.7 0A S S S S

Calling PartyCategory

3.8 09 S S S S

Calling GeodeticLocation

81 S S NS S 4)

CarrierIdentification

3.8A C5 S S S S

Carrier SelectionInformation

3.8B EE S S S S

Cause Indicators 3.9 12 S S S S

Charge Number 3.10 EB S S S S




Table 2. Parameters (cont.)


Code ANSIusage




Circuit AssignmentMap

3.10B 25 S NS NS NS 3)

Circuit GroupCharacteristicIndicator

3.10A E5 S NS NS NS 3)

Circuit GroupSupervisionMessage TypeIndicator

3.11 15 S NS NS NS 3)

CircuitIdentificationName


Circuit StateIndicator

3.11B 26 S NS NS NS 3)

Circuit ValidationResponseIndicator

3.11C E6 S NS NS NS 3)

Closed UserGroup CheckResponseIndicators

3.12 1C NS NS NS NS

Closed UserGroup InterlockCode

3.13 1A NS OPT1 OPT1 OPT1

CommonLanguageLocationIdentification(CLLI) Code


ConnectedNumber

3.14A 21 NS NS NS S

ConnectionRequest

3.15 0D S NS NS S

ContinuityIndicators

3.16 10 S NS NS NS 3)

Egress Service 3.16A C3 S NS NS S

End Of OptionalParameters

3.17 00 S S S S





Code ANSIusage




Event Information 3.17A 24 S S S S

Facility Indicator 3.18 18 NS NS NS NS

Facility InformationIndicators

3.19 19 NS NS NS NS

Forward CallIndicators

3.20 07 S S S S

Generic Address 3.20A C0 S PS PS S

Generic Digits 3.20B C1 S PS NS S

Generic Name 3.20C C7 S NS NS S

Global CallReference

Nokia specific F2 S S S S

Hop Counter 3.20D 3D S NS NS S

Index 3.21 1B NS NS NS NS

InformationIndicators

3.22 0F S S 1) S 1) S

InformationRequest Indicators

3.23 0E S S 1) S 1) S

Jurisdiction 3.23A C4 S S S S

Nature OfConnectionIndicators

3.24 06 S S S S

Network Transport 3.24A EF S NS NS S

NotificationIndicator

3.24B E1 S S S S

Operator ServicesInformation

3.24D C2 S S S S

OptionalBackward CallIndicators

3.24C 29 S S S S

Optional ForwardCall Indicators

3.25 08 NS OPT1 OPT1 OPT1

Original CalledNumber

3.26 28 S S S S






Code ANSIusage




Originating LineInformation

3.26A EA S S S S

Outgoing TrunkGroup Number

3.26B E7 S NS S S

Precedence 3.26C 3A S S S S

Range And Status 3.27 16 S NS NS NS 3)

RedirectingNumber

3.28 0B S S S S

RedirectionInformation

3.29 13 S S S S

RedirectionNumber

3.29A 0C NS NS NS S

RemoteOperations

3.29B 32 S NS NS S

Service Activation 3.29C 33 S NS NS S

Service CodeIndicator

3.29D EC S NS NS S

Signalling PointCode

3.30 1E NS NS NS S

SpecialProcessingRequest

3.30A ED S NS NS S

SubsequentNumber

3.31 05 NS NS NS NS

Suspend/ResumeIndicators

3.31A 22 S NS NS NS

TransactionRequest

3.31B E3 S NS NS S

Transit NetworkSelection

3.31C 23 S S S S

TransmissionMediumRequirements

3.32 02 NS NS NS NS

TransmissionMedium Used

3.32A 35 S NS NS S





Code ANSIusage




User ServiceInformation 2)

3.33 1D S S S S

User ServiceInformation Prime

3.33A 30 S NS NS S

User-To-UserIndicators

3.34 2A S NS S S

User-To-UserInformation

3.35 20 S NS NS S

Note that in a transit exchange the order of the optional parameters at theoutgoing side can be different from the one at the incoming side.

1) Supported only in Information Field (INF) /Information Request Message (INR) messages.

2) ANSI-BC is different from GSM-BC.

3) These parameters are not supported in transitbecause the messages are point-to-point link-oriented.

4) ANSI T1.628 standard has not been finalised yet.

3.3 ISDN user part messages and codes


F mandatory, fixed-length parameter

V mandatory, variable-length parameter

O optional parameter of fixed- or variable-length


OPT1 optional feature, which is only used in its ownnetwork.




3.3.1 Address complete (ACM), (ANSI T1.113.3, Table 5)

Table 3. Address complete (ACM)

Parameter ANSIusage



Nokia'ssupport forTransitexchange

Message Type F S S S

Backward Call Indicators F S S S

Access Transport O S S S

Business Group O NS NS S

Call Reference O NS NS S

Cause Indicators O S S S

Connection Request O NS NS S

Information Indicators O NS NS S

Network Transport O NS NS S

Notification Indicator O S S S

Optional Backward Call Indicators O S S S

Redirection Information O NS NS NS

Remote Operations O NS NS S

Service Activation O NS NS S

Transmission Medium Used O NS NS S

User-to-User Indicators O S NS S

User-To-User Information O NS NS S

End Of Optional Parameters O S S S

3.3.2 Answer (ANM), (ANSI T1.113.3, Table 6)

Table 4. Answer (ANM)

Parameter ANSIusage







Table 4. Answer (ANM) (cont.)

Parameter ANSIusage





Backward Call Indicators O S S S

Backward Cug Indicators NS OPT1 OPT1 OPT1






Notification Indicator 1) O NS NS S





User-To-User Indicators O NS NS S


End of Optional Parameters O S S S

1) The parameter is repeated within the message.

3.3.3 Call progress (CPG), (ANSI T1.113.3, Table 6A)

Table 5. Call progress (CPG)

Parameter ANSIusage





Event Information F S S S





Table 5. Call progress (CPG) (cont.)

Parameter ANSIusage




Backward Call Indicators O S S S

Backward CUG Indicators NS OPT1 OPT1 OPT1



Cause Indicators O S S S



Notification Indicator (see Note) O S S S


Redirection Number NS NS NS NS




User-To-User Indicators O NS NS S



Note that the parameter is repeated within the message.

3.3.4 Circuit query response (CQR), (ANSI T1.113.3, Table 6B)

Table 6. Circuit group query response (CQR)

Parameter ANSIusage




Message type F S NS NS 2)

Range and Status 1) V S NS NS 2)

Circuit State Indicator V S NS NS 2)



1) The status subfield is not presented.

2) These are not supported in transit because themessage is point-to-point link-oriented.

3.3.5 Circuit reservation (CRM), (ANSI T1.113.3, Table 6C)

Table 7. Circuit reservation (CRM)

Parameter ANSIusage




Message Type F NS NS NS

Nature Of Connection Indicators F NS NS NS

3.3.6 Circuit validation response (CVR), (ANSI T1.113.3, Table 6D)

Table 8. Circuit validation response (CVR)

Parameter ANSIusage




Message Type F S NS NS 1)

Circuit Validation Response Indicator F S NS NS 1)

Circuit Group Characteristic Indicator F S NS NS 1)

Circuit Identification Name (sending end) O NS NS NS 1)

Common Language LocationIdentification (CLLI) Code (sending end)

O NS NS NS 1)

End of Optional Parameters O NS NS NS 1)





3.3.7 Closed User Group selection and validation request (CSVR), (ANSIT1.113.3, Table 7)

No procedures specified in the US networks.

3.3.8 Closed User Group selection and validation response (CSVS), (ANSIT1.113.3, Table 8)


3.3.9 Confusion (CFN), (ANSI T1.113.3, Table 8A)

Table 9. Confusion Message (CFN)

Parameter ANSIusage




Message Type F S NS 1) NS

Cause Indicators V S NS NS

End of Optional Parameters (see Note) O S NS NS

Note that the octet end of optional parameters indicates that this messagecan include optional parameters in the future.

1) Discarded when received.

3.3.10 Continuity (COT), (ANSI T1.113.3, Table 9)

Table 10. Continuity Message (COT)

Parameter ANSIusage




Message Type F S S NS 1)

Continuity Indicators F S S NS 1)




3.3.11 Exit (EXM), (ANSI T1.113.3, Table 9A)

Table 11. Exit Message (EXM)

Parameter ANSIusage




F NS S NS

Outgoing trunk group number O NS S NS

End of optional parameters O NS S NS

3.3.12 Facility (FAC), (ANSI T1.113.3, Table 9B)

Table 12. Facility (FAC)

Parameter ANSIusage





Remote Operations O NS NS NS

Service Activation O NS NS NS

End of Optional Parameter O NS NS NS

3.3.13 Facility information (FAI), (ANSI T1.113.3, Table 10)





3.3.14 Facility reject (FRJ), (ANSI T1.113.3, Table 11)


3.3.15 Information (INF), (ANSI T1.113.3, Table 12)

Table 13. Information Message (INF)

Parameter ANSIusage





Information Indicators F S S S




Calling Party Number O S S S

Calling Party Category O NS NS S

Charge Number O NS NS S


Originating Line Information O NS NS S

Redirecting Number O NS NS S

Redirection Information O NS NS S



3.3.16 Information request (INR), (ANSI T1.113.3, Table 13)

Table 14. Information Request (INR)

Parameter ANSIusage







Table 14. Information Request (INR) (cont.)

Parameter ANSIusage




Information Request Indicators F S S S





3.3.17 Initial address (IAM), (ANSI T1.113.3, Table 14)

Table 15. Initial Address Message (IAM)

Parameter ANSIusage





Nature of Connection Indicators F S S S

Forward Call Indicators F S S S

Calling Party Category F S S S

User Service Information V S S S

Called Party Number V S S S




Calling Party Number O S S S

Calling Geodetic Location O S NS S

Carrier Identification O S S S

Carrier Selection Information O S S S

Charge Number O S S S

Circuit Assignment Map O NS NS S





Table 15. Initial Address Message (IAM) (cont.)

Parameter ANSIusage




Egress Service O NS NS S

Generic Address O PS PS S

Generic Digits (see note) O PS NS S

Generic Name O NS NS S

Global Call Reference O S S S

Hop Counter O NS NS S

Information Request Indicators O NS NS S

Jurisdiction O S S S


Operator Services Information O S S S

Original Called Number O S S S

Originating Line Information O S S S

Precedence O S S S

Redirecting Number O S S S

Redirection Information O S S S



Service Code Indicator O NS NS S

Special Processing Request O NS NS S

Transaction Request O NS NS S

Transit Network Selection O S S S

User Service Information Prime O NS NS S


End Of Optional Parameters O S S S

Note that the parameter may be repeated within the message.



3.3.18 Release (REL), (ANSI T1.113.3, Table 14A)

Table 16. Release Message (REL)

Parameter ANSIusage





Cause Indicators V S S S

Access Transport O NS NS S

Automatic Congestion Level O OPT S NS 2)


Charge Number O NS NS S

Generic Address 1) O NS NS S


User-to-User Information O NS NS S


1) The parameter may be repeated within the message.

2) The parameter is not supported in transit because itis point-to-point link-oriented.

3.3.19 Subsequent address (SAM), (ANSI T1.113.3, Table 15)

No procedures specified in the US networks .

3.3.20 Forward transfer (FOT), (ANSI T1.113.3, Table 17)

Table 17. Forward Transfer Message (FOT)

Parameter ANSIusage



Nokia'ssupportfor Transitexchange

Message Type F NS NS S





Table 17. Forward Transfer Message (FOT) (cont.)

Parameter ANSIusage




End of Optional Parameters O NS NS S

3.3.21 Suspend Message(SUS), Resume Message (RES), (ANSI T1.113.3,Table 17A)

Table 18. Suspend Message (SUS), Resume Message (RES)

Parameter ANSIusage




Message Type F NS S S

Suspend/Resume Indicators F NS S S


End of Optional Parameters O NS S S

3.3.22 Delayed Release (ANSI T1.113.3, Table 17B)




3.3.23 Blocking (BLO), Blocking acknowledgement Message (BLA),Continuity Check Request (CCR), Reset Circuit Message (RSC),Unblocking Message (UBL), Unblocking AcknowledgementMessage (UBA), Unequipped Circuit Identification Code Message(UCIC), (ANSI T1.113.3, Table 18)

Table 19. Blocking Message (BLO), Blocking Acknowledgement Message(BLA), Continuity Check Request (CCR), Reset Circuit Message(RSC), Unblocking Message (UBL), Unblocking AcknowledgementMessage (UBA), Unequipped Circuit Identification Code Message(UCIC)

Parameter ANSIusage




Message type F S S NS 1)

1) The parameter is not supported in transit becausethe messages are point-to-point link-oriented.

3.3.24 Circuit Reservation Acknowledgement (CRA), (ANSI T1.113.3, Table18)

Table 20. Circuit Reservation Acknowledgement (CRA)

Parameter ANSIusage








3.3.25 Loop Back Acknowledgement Message (LPA), Release Complete(RLC), (ANSI T1.113.3, Table 18)

Table 21. Loop Back Acknowledgement Message (LPA), Release Complete(RLC)

Parameter ANSIusage





3.3.26 Overload (OLM), (ANSI T1.113.3, Table 18)


3.3.27 Call Modification Completed Message (CMC), Call ModificationReject Message (CMRJ), Call Modification Request Message (CMR),(ANSI T1.113.3, Table 19)


3.3.28 Circuit Group Blocking Message (CGB), Circuit group BlockingAcknowledgement Message (CGBA), Circuit Group UnblockingMessage (CGU), Circuit Group Unblocking AcknowledgementMessage (CGUA), (ANSI T1.113.3, Table 20)

Table 22. Circuit Group Blocking Message (CGB), Circuit Group BlockingAcknowledgement Message (CGBA), Circuit Group UnblockingMessage (CGU), Circuit Group Unblocking AcknowledgementMessage (CGUA)

Parameter ANSIusage





Circuit Group Supervision Message TypeIndicator

F S S NS 1)



Table 22. Circuit Group Blocking Message (CGB), Circuit Group BlockingAcknowledgement Message (CGBA), Circuit Group UnblockingMessage (CGU), Circuit Group Unblocking AcknowledgementMessage (CGUA) (cont.)

Parameter ANSIusage




Range And Status V S S NS 1)

Note that in these messages, the status subfield is not presented when therange code is zero.


3.3.29 Circuit Group Reset Message (GRS) 1), Circuit Group ResetAcknowledgement Message (GRA) 2), (ANSI T1.113.3, Table 21)

Table 23. Circuit Group Reset Message (GRS) , Circuit Group ResetAcknowledgement Message (GRA)

Parameter ANSIusage





Range And Status V S S NS 4)

Circuit Assignment Map 3) O NS NS NS 4)

End of Optional Parameters O S S NS 4)

1) In this message the status subfield is not presented.

2) In the GRA message the status subfield is notpresented when the range code is zero.




3) This parameter can be included only in the GRS andGRA messages.


3.3.30 Circuit Group Query Message (CQM), (ANSI T1.113.3, Table 21)

Table 24. Circuit Group Query Message (CQM)

Parameter ANSIusage




Message Type F NS S NS 1)

Range And Status V NS S NS 1)

End of Optional Parameters O NS S NS 1)

1) These parameters are not supported in transitbecause the message is point-to-point link-oriented.

3.3.31 Facility Accepted Message (FAA), Facility Deactivated Message(FAD), Facility Request Message (FAR), (ANSI T1.113.3, Table 22)


3.3.32 Pass-Along Message (PAM), (ANSI T1.113.3, Table 23)

Table 25. Pass-Along Message (PAM)

Parameter ANSIusage







3.3.33 Circuit Validation Test (CVT), (ANSI T1.113.3, Table 18)

Table 26. Circuit Validation Test (CVT)

Parameter ANSIusage




Message Type F NS S NS 1)

1) The parameter is not supported in transit becausethe message is point-to-point link-oriented.

3.4 ISDN user part parameters

Spare and reserved indicators and indicator values are passed on in thecase of a transit exchange so that the transit node does not restrict thefunction. Indicators and indicator values that are not supported are passedon according to the ANSI T1.113 specification in the case of a transitexchange.



OPT1 optional feature, which is supported in its ownnetwork only.

3.4.1 Access Transport (ATP) (ANSI T1.113 3.1A)

Table 27. Access Transport

Octets ANSIusage




1-n: Information element(s) S S S S




3.4.2 Automatic Congestion Level (ACL) (ANSI T1.113 3.2A)

Table 28. Automatic Congestion Level

Bits ANSIusage




00000000 Spare NS NS NS NS 2)

00000001 Congestion level 1exceeded

S OPT S NS 2)


S OPT S NS 2)


S NS S 1) NS 2)

00000100 )

: ) Spare NS NS NS NS 2)

11111111 )

1) Congestion level 3 exceeded is mapped tocongestion level 2 in the MSC.

2) These are not supported in transit because theparameter is point-to-point link-oriented.

3.4.3 Backward Call Indicator (ANSI T1.113 3.3)

Table 29. Backward Call Indicator

Bits ANSIusage




BA: Charge indicator S S S S

00 No indication (default) S S S S

01 No charge S S S S

10 Charge NS NS NS NS

11 Spare NS NS NS NS



Table 29. Backward Call Indicator (cont.)

Bits ANSIusage




DC: Called party statusindicator

S S S S


01 Subscriber free S S S S

10 Connected when it isfree

NS NS NS NS

11 Excessive delay S NS NS NS

FE: Called party categoryindicator

S S S S


01 Ordinary subscriber S S S S

10 Payphone NS NS NS NS


HG: End-to-end methodindicator

S S S S

00 No end-to-end methodavailable

S S S S

01 Pass along methodavailable

S NS NS NS

10 SCCP method available S NS NS NS

11 Pass along and SCCPmethod available

S NS NS NS

I: Interworking indicator S S S S

0 No interworking isencountered

S S S S

1 Interworking isencountered

S S S S

J: IAM segmentationindicator

S S S S

0 No indication S S S S

1 Additional informationhas been received andincorporated into callsetup

S S S S

K: ISDN User Part indicator S S S S




Table 29. Backward Call Indicator (cont.)

Bits ANSIusage




0 ISDN User Part not usedall the way

S S S S

1 ISDN User Part used allthe way

S S S S

L: Holding indicator S S S S

0 Holding not required(default)

S S S S

1 Holding required NS NS NS NS

M: ISDN access indicator S S S S

0 Terminating access non-ISDN

S S S S

1 Terminating access ISDN S S S S

N: Echo control deviceindicator

S S S S

0 Incoming half echocontrol device is notincluded

S S S S

1 Incoming half echocontrol device included

S S S S

PO: SCCP method indicator S S S S


01 Connectionless methodavailable

NS NS NS NS

10 Connection orientedmethod is available

NS NS NS NS

11 Connectionless andconnection orientedmethod is available

NS NS NS NS

Note that bits between G - K constitute the protocol indicator.



3.4.4 Backward Closed User Group (CUG) Indicators

Table 30. Backward Closed User Group (CUG) indicators

Bits ANSIusage





00000001 CUG call NS OPT1 OPT1 OPT1

00000010 Non-CUG call NS OPT1 OPT1 OPT1


00000100 )

: ) Spare NS NS NS NS

11111111 )

3.4.5 Business Group (ANSI T1.113 3.3A)

Table 31. Business Group

ANSIusage




bit 7 1) Attendant status S NS NS S

0 No indication S NS NS S

1 Attendant line S NS NS S

bit 6 2) Business groupidentifier type

S NS NS S

0 Multi-location businessgroup identifier

S NS NS S

1 Interworking with privatenetworks identifier

S NS NS S

bit 5 3) Line privilegesinformation indicator

S NS NS S

0 Fixed line privileges S NS NS S

1 Customer defined lineprivileges

S NS NS S




Table 31. Business Group (cont.)

ANSIusage




bits 4-1 4) Party selector S NS NS S

0000 No indication S NS NS S

0001 Calling party number S NS NS S

0010 Called party number S NS NS S

0011 Connected party number S NS NS S

0100 Redirecting number S NS NS S

0101 Original called number S NS NS S

0110 )


1111 )

3 octects 5) Business groupidentifier

S NS NS S

A code is expressed inpure binaryrepresentation, where thenumber is allocated to abusiness group. Number1 indicates the publicnetwork. Number 0signifies "no indication".

S NS NS S

2 octects 6) Sub-group identifier S NS NS S

A code is expressed inpure binaryrepresentation where thenumber is allocated to asub-group within abusiness group. The “allzeros” code indicatesabsence of sub-groups.

S NS NS S

1 octect 7) Line privileges S NS NS S

Originatingrestrictions(bits 8-5)Terminatingrestrictions(bits 4-1)

a) Line privilegesinformation indicator = 0

0000 Unrestricted S NS NS S

0001 Semi-restricted S NS NS S



Table 31. Business Group (cont.)

ANSIusage




0010 Fully restricted S NS NS S

0011 Fully restricted, intra-switch

S NS NS S

0100 Denied S NS NS S

0101 )


1111 )

b) Line privilegesinformation indicator = 1

00000000 )

: ) Customer is defined byline privileges codes

S NS NS S

11111111 )

3.4.6 Call Modification Indicators (ANSI T1.113 3.4)


3.4.7 Call Reference (ANSI T1.113 3.5)

Table 32. Call Reference

ANSIusage




1) Call identity S NS NS S

2) Point code S NS NS S




3.4.8 Called Party Number (ANSI T1.113 3.6)

Table 33. Called Party Number (CdPN)

Bits ANSIusage




1) (bit 8) Odd/even indicator S S S S

0 Even number of addresssignals

S S S S

1 Odd number of addresssignals

S S S S

2) (bits 7 - 1) Nature of addressindicator

S S S S

0000000 Spare (no interpretation) NS NS NS NS

0000001 Subscriber number S S S S

0000010 Spare, reserved fornational use (nointerpretation)

NS NS NS NS

0000011 National (significant)number

S S S S

0000100 International number S S S S

0000101 )

: ) Spare (nointerpretation)

NS NS NS NS

1110000 )

1110001 Subscriber number,operator requested

S S S S

1110010 National numberrequested by theoperator

S S S S

1110011 International numberrequested by theoperator

S S S S

1110100 No number requested bythe operator is presented

S S S S

1110101 No number, cut-throughcall to carrier, ispresented,

S NS NS NS



Table 33. Called Party Number (CdPN) (cont.)

Bits ANSIusage




1110110 950+ call from localexchange carrier, publicstation, hotel/motel, ornon-exchange accessend office

S NS NS NS

1110111 Test line test code S NS NS NS

1111000 )

: ) Reserved for networkspecific use (nointerpretation)

NS NS NS NS

1111110 )


bit 8 ANSI: spare NS NS NS NS

3) (bits 5-7)(bits 1-4spare)

Numbering plan indicator S S S S

000 Unknown (nointerpretation)

NS NS NS NS

001 ISDN (telephone)numbering plan

S S S S


011 Reserved (CCITT: Datanumbering plan)

NS NS NS NS

100 Reserved (CCITT: Telexnumbering plan)

NS NS NS NS

101 Private numbering plan S NS NS NS



4) Address signal S S S S

0000 Digit 0 S S S S









Table 33. Called Party Number (CdPN) (cont.)

Bits ANSIusage









1011 Code 11 S S S S




1111 ST (end of pulse)RESERVED (nointerpretation)

NS NS NS NS

5) Filler (default = 0000) S S S S

3.4.9 Calling Party Number (ANSI T1.113 3.7)

Table 34. Calling Party Number (CgPN)

Bits ANSIusage






S S S S


S S S S

2) (bits 7-1) Nature of addressindicator

S S S S


0000001 Unique subscribernumber

S S S S



Table 34. Calling Party Number (CgPN) (cont.)

Bits ANSIusage





NS NS NS NS

0000011 Unique national(significant) number

S S S S

0000100 Unique internationalnumber

S S S S

0000101 )


NS NS NS NS

1110000 )

1110001 Non-unique subscribernumber

S S S S


NS NS NS NS

1110011 Non-unique national(significant) number

S S S S

1110100 Non-unique internationalnumber

S S S S



1110111 Test line test code (Note) S NS S NS

1111000 )


NS NS NS NS

1111110 )



3) (bits 7-5) Numbering plan indicator S S S S

000 Unknown (see Note) S NS S NS


S S S S






Bits ANSIusage





NS NS NS NS

100 Reserved (CCITT:Telexnumbering plan)

NS NS NS NS




4) (bits 4-3) Address presentationrestricted indicator

S S S S

00 Presentation allowed S S S S

01 Presentation restricted(default)

S S S S



5) (bits 2-1) Screening indicator S S S S

00 Reserved (user provided,not screened)

NS S S S

01 User provided, screeningpassed

S S S S

10 Reserved (user provided,screening failed)

NS S S S

11 Network provided S S S S















Bits ANSIusage









1111 Reserved for ST NS NS NS NS


3.4.10 Calling Party Category (ANSI T1.113 3.8)

Table 35. Calling Party Category (CPC)

Bits ANSIusage




00000000 Calling party categoryunknown (default)

S S S S

00000001 Operator language,French

NS NS NS NS

00000010 Operator language,English

NS NS NS NS

00000011 Operator language,German

NS NS NS NS

00000100 Operator language,Russian

NS NS NS NS

00000101 Operator language,Spanish

NS NS NS NS

00000110 ) Available forAdministration

00000111 ) Selecting a particularlanguage

NS NS NS NS

00001000 ) By mutual agreement




Table 35. Calling Party Category (CPC) (cont.)

Bits ANSIusage




00001001 Reserved (CCITT rec.Q.104) see Note 1)

NS NS NS NS

00001010 Ordinary callingsubscriber

S S S S

00001011 Calling subscriber withpriority

NS NS NS NS

00001100 Data call (voice banddata)

NS NS NS NS

00001101 Test call S S S S


00001111 Payphone NS NS NS NS

00010000 )


11011111 )

11100000 Emergency service call S S S S

11100001 High priority emergencyservice call

S S S S

11100010 National Security andEmergencyPreparedness (NS/EP)call

S S S S

11100011 )

: ) ANSI spare NS NS NS NS

11011111 )

11110000 )

: ) Network specific use NS NS NS NS

11111110 )

11111111 Reserved for expansion NS NS NS NS

1) In national networks code 00001001 may be used toindicate that the calling party is a national operator.



3.4.11 Carrier Identification (ANSI T1.113 3.8A)

Table 36. Carrier Identification

Bits ANSIusage




1) Type of networkidentification

S S S S



010 National networkidentification

S S S S

Others Spare (no interpretation) NS NS NS NS

2) Network identificationplan

S S S S


S NS NS NS

0001 3-digit carrieridentification with circuitcode

S S S S

0010 4-digit carrieridentification with circuitcode

S S S S

0011 )

: ) Reserved (nointerpretation)

NS NS NS NS

0111 )

1000 )


NS NS NS NS

1111 )

3) Digits 1-3 or 1-4 S S S S









Table 36. Carrier Identification (cont.)

Bits ANSIusage















NS NS NS NS

3.4.12 Carrier Selection Information (ANSI T1.113 3.8B)

Table 37. Carrier Selection Information

Bits ANSIusage





00000001 Selected carrieridentification pre-subscribed and is notinput by calling party

S S S S

00000010 Selected carrieridentification pre-subscribed and is inputby calling party

S S S S



Table 37. Carrier Selection Information (cont.)

Bits ANSIusage




00000011 Selected carrieridentification pre-subscribed, input bycalling partyundetermined

S S S S

00000100 Selected carrieridentification not pre-subscribed and input bycalling party

S S S S

00000101 )


11111110 )

11111111 Reserved NS NS NS NS

3.4.13 Cause Indicators (ANSI T1.113 3.9)

Table 38. Cause Indicators

ANSIusage




1) Extension indicator S S S S

0 Octet continues throughthe next octet

S S S S

1 Last octet S S S S

2) Coding standard S S S S

00 CCITT standard (default) S S S S

01 Reserved for otherinternational standards

NS NS NS NS

10 ANSI standard S NS S S


3) Location S S S S

0000 User S S S S




Table 38. Cause Indicators (cont.)

ANSIusage




0001 Local private network S NS S S

0010 Local local network S S S S

0011 Transit network S NS S S

0100 Remote local network S S S S

0101 Remote private network S NS S S

0110 Local interface iscontrolled by thissignalling link

S NS S S

0111 International network S NS S S

1010 Network beyond is aninterworking point(default)

S NS S S

All other values arereserved.

4) Cause value S S S S

a) CCITT standard (Codingstandard 00)

S S S S

Class 000, normal event

0001 (1) Unallocated(unassigned) number

S S S S

0010 2) No route to specifictransit network

NS NS NS NS

0011 (3) No route todestination

S S S S

0100 (4) Send specialinformation tone

S S S S

0101 (5) Misdialled trunkprefix

NS NS NS NS

1000 (8) Pre-emption S NS S S

1001 (9) Pre-emption - circuitreserved for reuse

S NS S S


0000 (16) Normal call iscleared

S S S S

0001 (17) User is busy S S S S




ANSIusage




0010 (18) No user responds S S S S

0011 (19) No answer comesfrom the user (useralerted)

S S S S

0100 (20) Subscriber isabsent

S S S S

0101 (21) Call is rejected S S S S

0110 (22) Number is changed S S S S

1011 (27) Destination is out oforder

S S S S

1100 (28) Invalid numberformat (addressincomplete)

S S S S

1101 (29) Facility is rejected S S S S

1111 (31) Normal isunspecified (default)

S S S S

Class 010, resourceunavailable

0010 (34) No circuit/channel isavailable

S S S S

0110 (38) Network is out oforder

S S S S

1001 (41) Temporary failure S S S S

1010 (42) Switchingequipment congestion

S S S S

1011 (43) Access informationis discarded

S NS S S

1100 (44) Requested circuit/channel is not available

S S S S

1110 (46) Precedence call isblocked

S NS S S

1111 (47) Resource isunavailable and isunspecified (default)

S S S S

Class 011, service oroption not available





ANSIusage




0010 (50) Requested facility isnot subscribed

S S S S

0101 (53) Outgoing calls arebarred within CUG 1)

NS OPT OPT OPT

0111 (55) Incoming calls arebarred within CUG 1)

NS OPT OPT OPT

1001 (57) Bearer capability isnot authorised.

S S S S

1010 (58) Bearer capability isnot presently available.

S S S S

1110 (62) There isInconsistency indesignated outgoingaccess information andsubscriber class.

S NS S S

1111 (63) Service/option is notavailable - unspecified(default)

S S S S

Class 100, service oroption not implemented

0001 (65) Bearer capability isnot implemented.

S S S S

0101 (69) Requested facility isnot implemented.

S NS S S

0110 (70) Only restricteddigital information bearercapability is available.

S NS S S

1111 (79) Service or option isnot implemented -unspecified (default)

S S S S

Class 101, invalidmessage (for exampleparameter out of range)

0111 (87) User is not memberof CUG 1)

NS OPT OPT OPT

1000 (88) Incompatibledestination

S S S S

1010 (90) Non-existent CUG NS OPT1 OPT1 OPT1




ANSIusage




1011 (91) Invalid transitnetwork selection

S S S S

1111 (95) Invalid message,unspecified (default)

S S S S

Class 110, protocol error(for example, unknownmessage)

0001 (97) Message type isnon-existent or non-implemented

S S S S

0011 (99) Informationelement/parameter isnon-existent or notimplemented - discarded

S NS S S

0110 (102) Recovery is ontimer expiry

S S S S

0111 (103) Parameter is non-existent or notimplemented - it ispassed on

S NS NS NS

1110 (110) Message withunrecognised parameteris discarded

S NS NS NS

1111 (111) Protocol error isunspecified (default)

S S S S

Class 111, interworking

1111 (127) Interworking isunspecified (default)

S S S S

b) ANSI standard (Codingstandard 10) NOTE

S NS S S


0111 (23) Unallocateddestination number

S NS S S

1000 (24) Undefined businessgroup

S NS S S

1001 (25) Exchange routingerror

S NS S S

Class 010, resourceunavailable





ANSIusage




1101 (45) Pre-emption (usedby T1.113-1988 andT1.619-1992)

S NS S S

1110 (46) Precedence call isblocked

(used by T1.113-1988and T1.619-1992)

S NS S S

Class 011, service oroption not available

0011 (51) Call type isincompatible withservice requested

S NS S S

0110 (54) Call blocked due togroup restrictions

S NS S S

5) Diagnostics S NS NS NS

Note that spare values in the ANSI standard domain of values areinterpreted as value '127' in the CCITT domain of values.

3.4.14 Charge Number (ANSI T1.113 3.10)

Table 39. Charge Number

Bits ANSIusage






S S S S


S S S S

2) (bits 7 - 1) Nature of addressindicator

S S S S



Table 39. Charge Number (cont.)

Bits ANSIusage





0000001 ANI of the calling party;subscriber number

S S S S

0000010 ANI is not available ornot provided

S S S S

0000011 ANI of the calling party;national number

S S S S


0000101 ANI of the called party;subscriber number

S S S S

0000110 ANI of the called party;no number presented

S S S S

0000111 ANI of the called party;national number

S S S S

0001000 )


1110111 )

1111000 )

: ) Reserved for networkspecific use

NS NS NS NS

1111110 )






NS NS NS NS


S S S S



NS NS NS NS


NS NS NS NS




Table 39. Charge Number (cont.)

Bits ANSIusage
















1000 digit 8 S S S S








NS NS NS NS




3.4.15 Circuit Group Characteristic Indicator (ANSI T1.113 3.10A)

Table 40. Circuit-Group-Characteristic Indicator (CGC )

ANSIusage




Circuit groupcharacteristic indicator

S S NS NS 1)

1) It is not supported in transit because the message ispoint-to-point link-oriented.

3.4.16 Circuit Assignment Map (ANSI T1.113 3.10B)

Table 41. Circuit Assignment Map

ANSIusage




Circuit Assignment Map S NS NS NS 1)

1) This is not supported in transit because themessages are point-to-point link-oriented.

3.4.17 Circuit Group Supervision Message Type Indicator (ANSI T1.1133.11)

Table 42. Circuit Group Supervision Message Type Indicator

Bits ANSIusage



Nokia'ssupport forTransit ex-change

BA: Circuit group blockingtype indicator

S S S NS 2)

00 Block without release S S S NS 2)




Table 42. Circuit Group Supervision Message Type Indicator (cont.)

Bits ANSIusage



Nokia'ssupport forTransit ex-change

01 Block with immediaterelease

S S S NS 2)

10 Reserved for nationaluse (NOTE)

NS NS S 1) NS 2)

11 Spare (no interpretation) NS NS NS NS 2)

H-C Spare NS NS NS NS 2)

Note that this value may be received from the ANSI T1.113-1988exchanges. The treatment of this value in the current version is a vendoroption. In a multi-vendor situation the applicable default value (00 or 01) isdetermined by a mutual agreement between the vendors.

1) The action is as with `block without release'.

2) These are not supported in transit because themessages are point-to-point link-oriented.

3.4.18 Circuit Identification Name (ANSI T1.113 3.11A)

Table 43. Circuit Identification Name

ANSIusage




Circuit IdentificationName

S NS NS NS 1)

1) This is not supported in transit because the messageis point-to-point link-oriented.



3.4.19 Circuit State Indicator (ANSI T1.113 3.11B)

Table 44. Circuit State Indicator

ANSIusage




Circuit state indicator S S S NS 1)


3.4.20 Circuit Validation Response Indicator (ANSI T1.113 3.11C)

Table 45. Circuit Validation Response Indicator

ANSIusage




Circuit validationresponse indicator

S S NS NS 1)


3.4.21 Closed User Group Check Response Indicators (ANSI T1.113 3.12)





3.4.22 Closed User Group Interlock Code (ANSI T1.113 3.13)

Table 46. Closed Usergroup Interlock Code (CUG indication )

ANSIusage




a) Network identity (NI) NS OPT1 OPT1 OPT1

b) Binary code NS OPT1 OPT1 OPT1

3.4.23 Common Language Location Identification (CLLI) code (ANSI T1.1133.13A)

Table 47. Common Language Location Identification (CLLI) code

ANSIusage




Common LanguageLocation Identification(CLLI) Code

S NS NS NS 1)


3.4.24 Connected Number (ANSI T1.113 3.14A)




3.4.25 Connection Request (ANSI T1.113 3.15)

Table 48. Connection Request

ANSIusage




Connection request S NS NS S

3.4.26 Continuity Indicators (ANSI T1.113 3.16)

Table 49. Continuity Indicators

Bit ANSIusage




A: Continuity indicator S NS S NS 1)

0 Continuity check failed S S S NS 1)

1 Continuity checksuccessful

S S S NS 1)

H-B Spare NS NS NS NS 1)


3.4.27 Egress Service (ANSI T1.113 3.16A)

Table 50. Egress Service

ANSIusage




Egress service S NS NS S




3.4.28 End Of Optional Parameters Indicator (ANSI T1.113 3.17)

Table 51. End of Optional Parameters Indicator

ANSIusage




End of optionalparameters indicator

S S S S

3.4.29 Event information (ANSI T1.113 3.17A)

Table 52. Event Information

Bits ANSIusage




GFEDCBA: 1) Event indicator S S S S


0000001 ALERTING S S S S

0000010 PROGRESS S S S S

0000011 In-band information or anappropriate pattern isnow available

S S S S

0000100 Call forwarded on busy NS NS NS NS

0000101 Call forwarded on noreply

NS NS NS NS

0000110 Call forwardedunconditional

NS NS NS NS

0001000 Notification forsupplementary service

S NS S S

0001001 )


NS NS NS NS

1101110 )

1101111 Service informationincluded

S NS NS S



Table 52. Event Information (cont.)

Bits ANSIusage




1110000 )


NS NS NS NS

1111110 )

1111111 Reserved (nointerpretation)

NS NS NS NS

H: 2) Event presentationrestricted indicator

S S S S


1 Presentation restricted S NS S S

3.4.30 Facility Indicator (ANSI T1.113 3.18)


3.4.31 Facility Information Indicators (ANSI T1.113 3.19)


3.4.32 Forward Call Indicators (ANSI T1.113 3.20)

Table 53. Forward Call Indicators

Bits ANSIusage




A: Incoming internationalcall indicator

S S S S

0 Not an incominginternational call

S S S S

1 Incoming internationalcall

S S S S




Table 53. Forward Call Indicators (cont.)

Bits ANSIusage




CB: End-to-end methodindicator

S S S S

00 No end-to-end methodavailable

S S S S

01 Pass along methodavailable

S NS NS NS

10 SCCP method available S NS NS NS

11 Pass along and SCCPmethods available

S NS NS NS

D: Interworking indicator S S S S

0 No interworkingencountered (No 7signalling all the way)

S S S S

1 Interworking encountered S S S S

E: IAM segmentationindicator

S S S S


1 Additional information inan unsolicited informationmessage

S S S S

F: ISDN user part indicator S S S S

0 ISDN user part is notused all the way

S S S S

1 ISDN user part is usedall the way

S S S S

HG: ISDN user partpreference indicator

S S S S

00 ISDN user part ispreferred all the way(default)

S S S S

01 ISDN user part is notrequired all the way

S S S S

10 ISDN user part isrequired all the way

S S S S


I: ISDN access indicator S S S S



Table 53. Forward Call Indicators (cont.)

Bits ANSIusage




0 Originating access non-ISDN

S S S S

1 Originating access ISDN S S S S

KJ: SCCP method indicator S S S S


01 Connectionless methodavailable

NS NS NS NS

10 Connection orientedmethod available

NS NS NS NS

11 Connectionless andconnection orientedmethod available

NS NS NS NS

L: Spare NS NS NS NS

M: NPDB query indicator S S S S

0 NPDB query is notperformed (Number nottranslated)

S S S S

1 NPDB query isperformed (Numbertranslated)

S S S S

N-P: Reserved for nationaluse

NS NS NS NS

3.4.33 Generic Address (ANSI T1.113 3.20A)

Table 54. Generic Address

Bits ANSIusage




1) (bit 8-1) Type of Address S PS PS S

00000000 Dialled number S NS NS S

00000001 Destination number S NS NS S




Table 54. Generic Address (cont.)

Bits ANSIusage




00000010 Supplemental user isprovided by callingaddress - failed networkscreening

S NS NS S

00000011 Supplemental user isprovided by callingaddress - not screened

S NS NS S

00000100 Completion number S NS NS S

00000101 )

: ) CCITT spare NS NS NS NS

01111111 )

10000000 )

: ) Network specific usage NS NS NS NS

10111110 )

10111111 Network specific usage(used only in ownnetwork )

NS OPT NS NS

11000000 Ported dialled number S S S S

11000001 )


11110111 )

11111000 transfer number 6 S NS NS S

11111001 transfer number 5 S NS NS S

11111010 Transfer number 4 S NS NS S



11111101 Ttransfer number 1 S NS NS S

11111110 Caller's EmergencyService Identification(CESID)

S NS NS S

11111111 reserved for expansion NS NS NS NS

2) (bit 8) Odd/even indicator S PS PS S


S S S S




Bits ANSIusage





S NS NS S

3) (bit 7-1) Nature of addressindicator

S PS PS S

0000000 Spare NS OPT NS NS

0000001 Subscriber number S NS NS S

0000010 Spare reserved, fornational use

S NS NS S

0000011 National S S S S

0000100 International number S NS NS S


0000110 Abbreviated number S NS NS S

0000111 )


1111111 )


4) (bit7-5) Numbering plan indicator S PS PS S


NS OPT NS NS


S S S S



NS NS NS NS


NS NS NS NS

101 Private numbering plan S NS NS S



5) (bit4-3) Address presentationrestricted indicator

S PS NS S

00 Presentation is allowed S NS NS S

01 Presentation is restricted S OPT NS S





Bits ANSIusage






bit 2-1 ANSI: reserved NS NS NS NS

6) Address signal S OPT NS S

0000 Digit 0 S OPT NS S


0010 Ddigit 2 S OPT NS S








1010 Spare (no interpretation) NS OPT NS NS

1011 Code 11 S OPT NS S

1100 Code 12 S OPT NS S




NS OPT NS NS

7) Filler (default = 0000 ) S NS NS S



3.4.34 Generic Digits (ANSI T1.113 3.20B)

Table 55. Generic Digits

ANSIusage




1) (bit 5-1) Type of Digits S PS NS S

00000 Account code S NS NS S

00001 Authorisation code S NS NS S

00010 Private network travellingclass mark

S NS NS S

00011 ) S NS NS S

: ) ANSI spare S NS NS S

01100 )

01101 Reserved for E911 calls S S NS S

01110 ANSI spare NS NS NS NS

01111 Bill-to-number S NS NS NS

10000 )


01110 )

11110 Reserved for networkspecific use

NS NS NS NS

11111 Reserved for extension NS NS NS NS

2) (bit 3-1) Encoding scheme S PS NS S

000 BCD even S S NS S

001 BCD odd S S NS S

010 IA5 S NS NS NS

011 Binary S NS NS NS

100 )


111 )

3) Digits S S NS S

Generic digits S NS NS S

Generic digits S NS NS S




3.4.35 Generic Name (ANSI T1.113 3.20C)

Table 56. Generic Name

ANSIusage




Generic name S NS NS S

3.4.36 Hop Counter (ANSI T1.113 3.20D)

Table 57. Hop Counter

ANSIusage




Hop counter S NS NS S

3.4.37 Index (ANSI T1.113 3.21)


3.4.38 Information Indicators (ANSI T1.113 3.22)

Table 58. Information Indicators

Bits ANSIusage




BA: Calling party addressresponse indicator

S S S S

00 Calling party address isnot included

S S S S



Table 58. Information Indicators (cont.)

Bits ANSIusage




01 Calling party address isnot available

S S S S


11 Calling party address isincluded

S S S S

C: Hold provided indicator S S S S

0 Hold is not provided(default)

S S S S

1 Hold provided NS NS NS NS

E-D: Spare NS NS NS NS

F: Calling party categoryresponse indicator

S S S S

0 Calling party category isnot included

S S S S

1 Calling party category isincluded

NS NS NS NS

G: Charge informationresponse indicator

S S S S

0 Charge information is notincluded

S S S S

1 Charge information isincluded

NS NS NS NS

H: Solicited informationindicator

S S S S

0 Solicited S S S S

1 Unsolicited S S S S

K-O: Spare NS NS NS NS

P: Multi-location businessgroup informationresponse indicator

S S S S

0 Multi-location businessgroup information is notincluded

S S S S

1 Multi-location businessgroup information isincluded

S NS NS NS




3.4.39 Information Request Indicators (ANSI T1.113 3.23)

Table 59. Information Request Indicators

Bits ANSIusage




A: Calling party addressrequest indicator

S S S S

0 Calling party address isnot requested

S S S S

1 Calling party address isrequested

S S S S

B: Holding indicator S S S S

0 Holding is not requested S S S S

1 Holding is requested NS NS NS NS

C: Spare NS NS NS NS

D: Calling party categoryrequest indicator

S S S S

0 Calling party category isnot requested

S S S S

1 Calling party category isrequested

NS NS NS NS

E: Charge informationrequest indicator

S S S S

0 Charge information is notrequested

S S S S

1 Charge information isrequested

NS NS NS NS

G-F: Spare NS NS NS NS

H: Malicious callidentification requestindicator

S S S S

0 Malicious callidentification is notrequested (default)

S S S S

1 Malicious callidentification is requested

NS NS NS NS



Table 59. Information Request Indicators (cont.)

Bits ANSIusage




I: Spare NS NS NS NS

J-O: Spare (no interpretation) NS NS NS NS

P: Multi-location businessgroup informationindicator

S S S S

0 Multi-location businessgroup information is notrequested

S S S S

1 Multi-location businessgroup information isincluded

S NS NS NS

3.4.40 Jurisdiction Information (ANSI T1.113 3.23A)

Table 60. Jurisdiction Information

ANSIusage




Jurisdiction information S S S S

3.4.41 Nature of Connection Indicators (ANSI T1.113 3.24)

Table 61. Nature of Connection Indicators

Bits ANSIusage




BA: Satellite indicator S S S S

00 No satellite circuit is inthe connection

S S S S




Table 61. Nature of Connection Indicators (cont.)

Bits ANSIusage




01 One satellite circuit is inthe connection

S S S S

10 Two satellite circuits arein the connection

S S S S

11 Three or more satellitecircuits are in theconnection

S NS S 1) S

DC: Continuity check indicator S S S S

00 Continuity check is notrequired (default)

S S S S

01 Continuity check isrequired on this circuit

S S S S

10 Continuity check isperformed on a previouscircuit

S S S S

11 Spare NS NS NS S

E: Echo control deviceindicator

S S S S

0 Outgoing half echocontrol device is notincluded

S S S S

1 Outgoing half echocontrol device is included

S S S S

F-H: Spare NS NS NS NS

1) Treated as two satellite circuits in the connection.



3.4.42 Network Transport (ANSI T1.113 3.24A)

Table 62. Network Transport

Bits ANSIusage




Network transport S NS NS S

1 Name of ISDN User Partparameter 1

S NS NS S

2 Length indicator ofparameter 1

S NS NS S

3 Contents of parameter 1 S NS NS S

... ...

n Name of ISDN User Partparameter n

S NS NS S

n Length indicator ofparameter n

S NS NS S

n Contents of parameter n S NS NS S

3.4.43 Notification Indicator (ANSI T1.113 3.24B)

Table 63. Notification Indicator

Bits ANSIusage




1) Extension indicator (ext) S S S S

0 Octet continues throughthe next octet

S NS NS S

1 Last octet S S S S

2) Notification indicator S S S S

0000000 )


NS NS NS NS

0000011 )




Table 63. Notification Indicator (cont.)

Bits ANSIusage




0000100 Call completion delay S NS NS S

0000101 )


NS NS NS NS

1011111 )

1100000 Call is a waiting call S S S S

1100001 Reserved for transfer isin progess

NS NS NS NS

1100010 Reserved for call isisolated from conferencecall

NS NS NS NS

1100011 Reserved for call is splitfrom conference call

NS NS NS NS

1100100 Reserved for call is re-attached to conferencecall

NS NS NS NS

1100101 Reserved for call isadded to conference call

NS NS NS NS

1100110 )


NS NS NS NS

1101000 )

1101001 Call transfer, alerting S NS S S

1101010 Call transfer, active S S S S

1101011 )


NS NS NS NS

1111000 )

1111001 Remote hold S S S S

1111010 Remote hold is released S S S S

1111011 Call is forwarded S S S S

1111100 )


NS NS NS NS



Table 63. Notification Indicator (cont.)

Bits ANSIusage




1111110 )

1111111 Reserved (nointerpretation)

NS NS NS NS

3.4.44 Operator Services Information (ANSI T1.113 3.24D)

Table 64. Operator Services Information

Bits ANSIusage




1) (bit 8-5) Information type S S S S

0001 Original access prefix S S S S

0010 Bill-to information entrytype and handling type

S NS NS NS

0011 Bill-to type S NS NS NS

0100 Bill-to specific information S NS NS NS

0101 Special handling S NS NS NS

0110 Spare S NS NS NS

0111 Access signalling S S S S

2) (bit 4-1) Information value S S S S

a) For information type0001

0000 Unknown S S S S

0001 1+ or 011+ S S S S

0010 0+ or 01+ S S S S

0011 0- S S S S

0100 )

: ) spare S NS NS NS

1001 )




Table 64. Operator Services Information (cont.)

Bits ANSIusage




1010 )


S NS NS NS

1111 )

b) For information type0010

S NS NS NS

c) For information type 0011 S NS NS NS

d) For information type0100

S NS NS NS

e) For information type0101

S NS NS NS

f) For information type 0111

0000 Unknown S S S S

0001 Dial pulse S NS NS NS

0010 Dual tone multifrequency S S S S

0011 )

: ) Spare S NS NS NS

1001 )

1010 )


S NS NS NS

1111 )



3.4.45 Optional Backward Call Indicators (ANSI T1.113 3.24C)

Table 65. Optional Backward Call Indicators

Bits ANSIusage




A: Inband InformationIndicator

S S S S


1 In-band information or anappropriate pattern isnow available

S S S S

B: Call Forwarding MayOccur Indicator

S S S S


1 Call forwarding mayoccur

NS NS NS NS

C-D: Spare NS NS NS NS

E-F: Reserved for nationaluse

NS NS NS NS

G: Network Excessive DelayIndicator

S S S S


1 Network excessive delayencountered

S NS NS NS

H: User-Network InteractionIndicator 1)

S S S S


1 User-network interactionoccurs, cut through inboth directions

S NS S S

1) Not supported (NS) if received before ACM.




3.4.46 Optional Forward Call Indicators (ANSI T1.113 3.25)

Table 66. Optional Forward Call Indicators

Bit ANSIusage




BA Closed user group callindicator

NS OPT OPT OPT

00 Non-CUG call NS OPT OPT OPT


10 CUG call, outgoingaccess allowed

NS OPT OPT OPT

11 CUG call, outgoingaccess is not allowed

NS OPT OPT OPT

H-C Spare NS NS NS NS

3.4.47 Original Called Number (ANSI T1.113 3.26)

Table 67. Original Called Number

Bits ANSIusage






S S S S


S S S S


S S S S



S S S S


NS NS NS NS



Table 67. Original Called Number (cont.)

Bits ANSIusage





S S S S


S S S S

0000101 )


NS NS NS NS

1110000 )


S S S S


NS NS NS NS


S S S S


S S S S




1111000 )


NS NS NS NS

1111110 )






NS NS NS NS


S S S S






Bits ANSIusage





NS NS NS NS


NS NS NS NS





S S S S



S S S S




















NS NS NS NS




Bits ANSIusage





3.4.48 Originating Line Information (ANSI T1.113 3.26A)

Table 68. Originating Line Information

Bits ANSIusage




0000000 )

: ) Binary equivalent of theII digits (administered bythe North AmericanNumbering PlanAdministration atBellcore)

S NS S S

00111100 )

00111101 Cellular service (type 1) S S S S

00111110 Cellular service (type 2) S S S S

00111111 Cellular service (roaming) S S S S

01000000 )

) Binary equivalent of theII digits (administered bythe North AmericanNumbering PlanAdministration atBellcore)

S NS S S

01100011 )

01100100 )

: ) Reserved for futureexpansion (nointerpretation)

NS NS NS NS

11111111 )




3.4.49 Outgoing Trunk Group Number (ANSI T1.113 3.26B)

Table 69. Outgoing Trunk Group Number

ANSIusage




Outgoing trunk groupnumber

S NS S NS

3.4.50 Precedence (ANSI T1.113 3.26C)

Table 70. Precedence

ANSIusage




Precedence S S S S

3.4.51 Range and Status (ANSI T1.113 3.27)

Table 71. Range and Status

ANSIusage




1) Range S S S NS 1)



Table 71. Range and Status (cont.)

ANSIusage




A number in pure binaryrepresentation rangingfrom 0 to 23 (31internationally). Rangecode 0 indicatesabsence of the statusfield. The numberrepresented by a non-zero range code plus 1indicates the range ofcircuits affected by themessage.

2) Status S S S NS 1)

The status bits arecoded as follows:

a) in CGB messages

0 no blocking

1 blocking

b) in CGBA messages

0 no blockingacknowledgement

1 blockingacknowledgement

c) in CGU messages

0 no unblocking

1 unblocking

d) in CGUA messages

0 no unblockingacknowledgement

1 unblockingacknowledgement

e) in GRA messages

0 no blocking

1 blocked





3.4.52 Redirecting Number (ANSI T1.113 3.27A)

Table 72. Redirecting Number

Bits ANSIusage






S S S S


S S S S


S S S S



S S S S


NS NS NS NS


S S S S


S S S S

0000101 )


NS NS NS NS

1110000 )


S S S S


NS NS NS NS


S S S S


S S S S






Table 72. Redirecting Number (cont.)

Bits ANSIusage




1111000 )


NS NS NS NS

1111110 )






NS NS NS NS


S S S S



NS NS NS NS


NS NS NS NS





S S S S



S S S S











Table 72. Redirecting Number (cont.)

Bits ANSIusage
















NS NS NS NS


3.4.53 Redirection Information (ANSI T1.113 3.29)

Table 73. Redirection Information

Bits ANSIusage




1) bits 3-1 Redirecting indicator NS NS NS NS

bit 4 Reserved NS NS NS NS

2) bits 8-5 Original redirectionreason

S S S S

0000 Unknown / not available(default)

S S S S

0001 User is busy S S S S

0010 No reply S S S S



Table 73. Redirection Information (cont.)

Bits ANSIusage




0011 Unconditional S S S S

0100 )


1110 )


3) bits 4-1 Redirection counter 1) S S S S

4) bits 8-5: Redirecting reason S S S S

0000 Unknown / is notavailable (default)

S S S S

0001 User is busy S S S S

0010 No reply S S S S

0011 Unconditional S S S S

0100 )


1111 )

1) Only bits from 3 to 1 are used.

3.4.54 Redirection Number (ANSI T1.113 3.29A)


3.4.55 Remote Operations (ANSI T1.113 3.29B)

Table 74. Remote Operations

ANSIusage




Remote operations S NS NS S




3.4.56 Service Activation (ANSI T1.113 3.29C)

Table 75. Service Activation

ANSIusage




Service Activation S NS NS S

3.4.57 Service Code Indicator (ANSI T1.113 3.29D)

Table 76. Service Code Indicator

ANSIusage




Service Code Indicator S NS NS S

3.4.58 Signalling Point Code (ANSI T1.113 3.30)


3.4.59 Special Processing Request (ANSI T1.113 3.30A)

Table 77. Special Processing Request

ANSIusage




Special processingrequest

S NS NS S



3.4.60 Subsequent Number (ANSI T1.113 3.31)


3.4.61 Suspend/Resume Indicators (ANSI T1.113 3.31A)

Table 78. Suspend/Resume Indicators

Bits ANSIusage




A Suspend/resume indicator S NS S S

0 ISDN subscriber initiated NS NS NS NS

1 Network initiated S NS S S

B-H: Spare NS NS NS NS

3.4.62 Transaction Request (ANSI T1.113 3.31B)

Table 79. Transaction Request

ANSIusage




Transaction request S NS NS S




3.4.63 Transit Network Selection (ANSI T1.113 3.31C)

Table 80. Transit Network Selection

Bits ANSIusage




1) Type of networkidentification

S S S S

000 CCITT-standardisedidentification

S NS NS NS

010 National networkidentification

S S S S

Others Reserved (nointerpretation)

NS NS NS NS

2) Network identification plan S S S S

a) For CCITT-standard zedidentification


S NS NS NS

0011 Public data networkidentification code (DNIC,CCITT RecommendationX.121)

S NS NS NS

0110 Public land mobile networkidentification code (MNIC,CCITT RecommendationX.121)

S NS NS NS

Others Reserved (nointerpretation)

NS NS NS NS

b) For national networkidentification


S NS NS NS

0001 3-digit carrier identificationwith circuit code

S S S S

0010 4-digit carrier identificationwith circuit code

S S S S

0011 )

: ) Reserved (nointerpretation)

NS NS NS NS

0111 )



Table 80. Transit Network Selection (cont.)

Bits ANSIusage




1000 )


NS NS NS NS

1111 )

3) Digits 1-3 or 1-4 S S S S

















NS NS NS NS

4) Circuit code S S S S

0000 Unspecified S S S S

0001 International call, nooperator requested

S S S S

0010 International call, operatorrequested

S S S S

0011 )

: ) Spare (no interpretation) NS NS NS NS

0111 )




Table 80. Transit Network Selection (cont.)

Bits ANSIusage




1000 )


S S S S

1111 )

3.4.64 Transmission Medium Requirements (ANSI T1.113 3.32)


3.4.65 Transmission Medium Used (ANSI T1.113 3.32)

Table 81. Transmission Medium Used

ANSIusage




Transmission mediumused

S NS NS S

3.4.66 User Service Information Prime (ANSI T1.113 3.33A)

Table 82. User Service Information Prime

ANSIusage




User service informationprime

S NS NS S



3.4.67 User Service Information (ANSI T1.113 3.33)

Table 83. User Service Information

ANSIusage




User service information S S S S

3.4.68 User-To-User Indicators (ANSI T1.113 3.34)

Table 84. User-To-User Indicators

Bits ANSIusage




A Type S S S S

0 Request NS NS NS NS

1 Response S S S S

If bit A equals 1(response):

CB: Service 1 NS NS NS NS

ED: Service 2 NS NS NS NS

GF: Service 3 NS NS NS NS

H: Network discard indicator S S S S

0 No information NS NS NS NS

1 User-to-user informationdiscarded by the network

S S S S




3.4.69 User-To-User Information (ANSI T1.113 3.35)

Table 85. User-To-User Information

ANSIusage




User-to-user information S NS NS S

3.4.70 Calling Geodetic Location (ANSI T1.628. *)

Table 86. Calling Geodetic Location

Bits ANSIusage




1) (bits 1-4) Screening indicator S S NS S

00 User provided, notverified

S S NS S

01 User provided, verifiedand passed

S S NS S

10 User provided, verifiedand failed

S S NS S

11 Network provided S S NS S

2) (bits 4-6) Location presentationrestricted indicator

S S NS S

00 Presentation is allowed S S NS S

01 Presentation is restricted S S NS S

10 Location is not available1)

S S NS S


3) (bits 5-8) Spare NS NS NS NS

4) (bits 8-15) Type of shape S S NS S

0000000 Ellipsoid point S S NS S

0000001 Ellipsoid point withuncertainty

S S NS S



Table 86. Calling Geodetic Location (cont.)

Bits ANSIusage




0000010 Point with altitude anduncertainty

S S NS S

0000011 Ellipse on the ellipsoid 1) NS NS NS NS

0000100 Ellipsoid circle sector 1) NS NS NS NS

0000101 Polygon 1) NS NS NS NS

0000110 )


0111111 )

1000000 )

: ) Reserved for national(no interpretation)

NS NS NS NS

1111110 )

1111111 Reserved for futureexpansion

NS NS NS NS

5) (bit 16) Extension indicator S S NS S

0 Information continuesthrough the next octet

S S NS S

1 Last octet S S NS S

6) (bits 16-n) Shape description S S NS S

1) This is not used for Emergency Calling Service(ECS).

*) The T1.628 ANSI Standard has not been finalisedyet.




3.4.71 Global Call Reference (Nokia specific)

Table 87. Global Call Reference

Bytes Nokia's supportfor Originatingexchange

Nokia's supportfor Terminatingexchange


0 ...F Network ID S S S

10 ... 15

Call reference ID S S S

3.5 Signalling procedures

The ISDN User Part signalling procedures for the set-up and clear down ofISDN connections are introduced in the following table.

Table 88. Signalling Procedures

Reference

T1.113.4

Nokia'ssupport

1 Scope, purpose and application

1.1 Relationship with other Signalling System No.7specifications

1.2 Numbering

1.3 Address signalling. En-bloc address signalling is used when MSC is in

originating node

S

1.4 Basic procedures S

1.4A Signalling methods S

1.5 Layout of chapter T1.113.4

1.6 Interworking with other signalling systems or userparts

2 Basic call control and signalling procedures

2.1 Successful call set-up



Table 88. Signalling Procedures (cont.)

Reference

T1.113.4

Nokia'ssupport

2.1.1 Forward address signalling - en bloc operation

2.1.1.1 Actions required at the originating exchange PS

1) Circuit selection. Only the following connection types are supported:

. speech

. 3.1 kHz audio

. 64 kbit/s unrestricted

PS

2) Address information sending sequence S

3) Initial address message. Echo control device indicator in the nature of

connection indicators is set based on the mobile(outgoing half echo control device is included onspeech, not included on data).

. Call reference is not supported.

. SCCP connection request is not supported.

PS

4) Transfer of information is not included in the Initialaddress message. solicited Information Message is only supported

PS

5) Completion of transmission path. Continuity check is not used

PS

6) Network protection timer S

2.1.1.2 Actions required at an intermediate exchange PS

1) Circuit selection. User service information is used for routing

PS

2) Parameters in the initial address message. Gateway MSC sets the echo control device indicator

according to the nature of connection indicators tovalue outgoing half echo control device. It isincluded when it sends IAM to PSTN.

PS

3) Completion of transmission path S

4) Congestion S

2.1.1.6 Actions required at the destination exchange

1) Selection of called party S

2) Connection is not allowed S

2.1.2 Forward address signalling - Overlap operation

2.1.3 Calling party number S





Reference

T1.113.4

Nokia'ssupport

2.1.3A Exit message

2.1.3A.1 Actions at a gateway exchange NS

2.1.3A.2 Actions at intermediate exchange NS

2.1.3A.3 Actions at an originating or gateway exchange S

2.1.3B Circuit reservation NS

2.1.3B.1 Actions at the exchange initiating circuit reservation NS

2.1.3B.2 Actions at intermediate exchange receiving a CircuitReservation Message

NS

2.1.3B.3 Interworking of answer indication NS

2.1.3B.4 Interworking with Facility/Service Selective Signalling NS

2.1.4 Address Complete Message S

2.1.4.1 Return of Address Complete Message fromdestination exchange

PS

DX200 generates 2)a). Called Party Status Indicator = “no indication”. ISDN Access Indicator = “ISDN”. 3)

PS

NS

2.1.4.2 Receipt of Address Complete Message at anintermediate exchange

S

2.1.4.3 Receipt of Address Complete Message at theoriginating exchange

S

2.1.4.4 Through-connection and awaiting answer indication atthe destination exchange

S

2.1.4.5 Address Complete Message with charging information S

2.1.4.6 Address Complete Message with other information S

2.1.4.7 Return of Address Complete Message in interworkingsituations. DX 200 does not act as an interworking point with

non-ISUP signalling systems.

PS

2.1.4A Call Progress Message S

2.1.4A.1 Return of Call Progress Message from the destinationexchange

S

2.1.4A.2 Receipt of Call Progress Message at an intermediateexchange. Intermediate national exchange is only supported.

PS




Reference

T1.113.4

Nokia'ssupport

2.1.4A.3 Receipt of Call Progress Message at the originatingexchange

S

2.1.4B Information messages

2.1.4B.1 Requesting information. Not supported in the forward call establishment

direction.

PS

2.1.4B.2 Sending solicited information S

2.1.4B.3 Sending unsolicited information S

2.1.4B.4 Receiving a solicited Information Message S

2.1.5 Answer Message S

2.1.5.1 Return of Answer Message from destination exchange S

2.1.5.2 Receipt of Answer Message at intermediate exchange S

2.1.5.3 Receipt of Answer Message at originating exchange S

2.1.5.4 Return of answer from automatic terminals S

2.1.5.5 Answer with charging information S

2.1.6 Continuity check S

2.1.6.1 Continuity check at sending exchange S

. 4 wire S

. 2 wire NS

2.1.6.2 Continuity check at receiving exchange S

. 4 wire S

. 2 wire NS

2.1.6.3 . Expiration of continuity-check timers S

2.1.7 Special procedures at an interworking point. DX 200 does not act as an interworking point with


NS

2.1.7.1 Completion of transmission path at an interworkingexchange. DX 200 does not act as an interworking point with


NS

2.1.7.2 Alerting of called party. DX 200 does not act as an interworking point with


NS

2.1.8 Cross office check S





Reference

T1.113.4

Nokia'ssupport

2.1.9 Charging procedures S

2.1.9.1 Basic call charging. MSC charging will be handled in the billing centre

S

2.1.9.2 Network charging messages NS

2.1.9.3 Charging for transfer of user-to-user data (deletedfrom T1.113.4)

2.1.9.3A Charge information S

2.1.10 Forward transfer message. Supported only in transit exchange.

PS

2.1.10A Transit network selection S

2.1.10B Carrier identification NS

2.1.10C Jurisdiction information S

2.1.10D Egress service NS

2.1.11 Storage and release of IAM information S

2.2 Unsuccessful call set-up S

2.2.1 Actions at exchange initiating a release message S

2.2.2 Actions at an intermediate exchange S

2.2.3 Actions at the controlling exchange S

2.2.4 Tones and announcements S

2.3 Normal call release S

2.3.1 Release initiated by a calling party S

1) Actions at the originating exchange S

2) Actions at an intermediate exchange S

3) Actions at the destination exchange S

4) Charging S

5) Collision of release messages S

2.3.2 Release initiated by the called party S

2.3.3 Release initiated by the network S

2.3.4 Release of address and routing information S

2.4 Transfer of user-to-user information (Deleted)

2.4A Transfer of access signalling information S

2.4B Transfer of network signalling information




Reference

T1.113.4

Nokia'ssupport

2.4B.1 Actions at the exchange that initiates message withnetwork transport parameter

NS

2.4B.2 Actions at an intermediate exchange S

2.4B.3 Actions at the exchange that terminates message withnetwork transport parameter

NS

2.5 Suspend, resume

2.5.1 Suspend S

2.5.1.1 Suspend initiated by the calling party (No proceduresspecified for the U.S. networks)

2.5.1.2 Suspend initiated by a called party (No proceduresspecified for the U.S. networks)

2.5.1.3 Suspend initiated by the network PS

1) Action at the destination exchange or an interworkingexchange. Mobile station has no re-answer capability using

suspend / resume message. On-hook case releasemessage is used.

PS

2) Action at an intermediate exchange S

3) Action at the controlling exchange S

2.5.2 Resume S

2.5.2.1 Resume initiated by the calling party (No proceduresspecified for the U.S. networks)

2.5.2.2 Resume initiated by the called party (No proceduresspecified for the U.S. networks)

2.5.2.3 Resume initiated by the network PS

a) Action at the destination exchange or an interworkingexchange. Mobile station has no reanswer capability using

suspend / resume message. On-hook case releasemessage is used.

PS

b) Actions of the intermediate exchange S

c) Action of the controlling exchange (that is, exchangecontrolling the call)

S

2.5.3 Expiration of timer T6 S

2.6 Delayed release (Deleted. No procedures specified forthe U.S. networks)

2.7 In call modification (Deleted)





Reference

T1.113.4

Nokia'ssupport

2.7A Echo control procedure S

2.7A.1 General S

2.7A.2 Forward direction

2.7A.2.1 Actions at the originating exchange S

2.7A.2.2 Actions at an intermediate exchange S

2.7A.2.3 Actions at the destination exchange S

2.7A.3 Backward direction

2.7A.3.1 Actions at the destination exchange S

2.7A.3.2 Actions at an intermediate exchange S

2.7A.3.3 Actions at the originating exchange S

2.8 Network features

2.8.1 Automatic repeat attempt S

2.8.2 Blocking and unblocking of circuits and circuit groups S

2.8.2.1 Blocking and Unblocking Messages S

2.8.2.2 Circuit group blocking and unblocking messages S

2.8.2.2A Receipt of an IAM on a remotely blocked circuit (see2.8.2.3)

2.8.2.3 Abnormal blocking and circuit group blockingprocedures. Maintenance system notification is not implemented.

PS

2.8.2A Circuit query

2.8.2A.1 General S

2.8.2A.2 Interpretation of circuit states S

2.8.2A.3 Auditing procedure S

2.8.2A.3.1 Error in call-processing states. Repairing operations are not supported, only a

message is printed to maintenance.

PS

2.8.2A.3.2 Error in maintenance states. Repairing operations are not supported, only a

message is printed to maintenance.

PS

2.9 Abnormal conditions

2.9.1 Dual seizure S

2.9.1.1 Unguarded interval S

2.9.1.2 Detection of dual seizure S




Reference

T1.113.4

Nokia'ssupport

2.9.1.3 Preventive action. Method 2 is not supported in the U.S. networks

S

2.9.1.4 Action to be taken on detection of dual seizures S

2.9.2 Transmission alarm handling for digital inter-exchangecircuits

S

2.9.3 Reset of circuits and circuit groups S

2.9.3.1 Reset circuit message S

2.9.3.2 Circuit group reset message S

2.9.3.3 Abnormal circuit group reset message procedures S

2.9.4 Failure in the blocking/unblocking sequence S

2.9.5 Receipt of unreasonable signalling information S

2.9.5.1 Handling of unexpected messages S

2.9.5.2 General requirements on receipt of unrecognisedsignalling information messages and parameters

S

2.9.5.3 Procedures for the handling of the unrecognisedmessages or parameters

S

2.9.5A Receipt of unrecognised signalling information (see2.9.5)

2.9.6 Failure to receive a Release Complete Message -Time T1 and T5

S

2.9.7 Failure to receive a response to an informationrequest message. Maintenance system information is not

implemented.

PS

2.9.8 Other failure conditions

2.9.8.1 Inability to release in response to a release message S

2.9.8.2 Call-failure S

2.9.8.3 Abnormal release conditions S

1) Outgoing international or national controlling exchange. International exchange is not covered.

PS

2) Incoming international exchange is not applicable. NS

3) Transit exchange S

2.9.8.3A Unequipped Circuit Identification Code Message S

2.9.9 Temporary trunk blocking (TTB) (No procedure isspecified for the U.S. networks)





Reference

T1.113.4

Nokia'ssupport

2.9A Multilevel precedence and pre-emption (Deleted)

2.9B NxDS0 multi-rate connection type NS

2.9C Connection type allowing fallback NS

2.10 ISDN User Part signalling congestion control (Noprocedure specified for the U.S. networks)

2.10A ISDN User Part flow control

2.10A.1 Actions on receipt of MTP-STATUS Primitive NS

2.10A.2 Actions on receipt of MTP-RESUME Primitive NS

2.10B Hop counter procedure NS

2.11 Automatic congestion control S

2.11.1 Receipt of a Release Message containing AnAutomatic Congestion Level parameter

S

2.11.2 Action taken during overload NS

2.11A Examples of call set-up sequences

2.11B State transition diagrams

2.11B.1 Organisation

2.11B.2 Signalling procedure control

2.11B.3 Call processing control

2.11B.4 Maintenance processing control

3 End-to-end signalling NS

4 User facilities (Deleted)

4A Generic supplementary services procedures

4A.1 Soliciting information

4A.1.1 Requesting information S

4A.1.2 Sending solicited information S

4A.1.3 Receiving solicited Information Message S

4A.2 Special processing request

4A.2.1 Actions required at the initiating exchange NS

4A.2.2 Actions required at an intermediate exchange NS

4A.2.3 Actions required at the special processing exchange NS

4A.2.4 Abnormal conditions

4A.3 Transfer of supplementary services notificationinformation




Reference

T1.113.4

Nokia'ssupport

4A.3.1 Actions at the exchange which initiates message withnotification indicator

NS

4A.3.2 Actions at an intermediate exchange S

4A.3.3 Actions at the exchange which terminates messagewith notification indicator

NS

4A.4 Address Complete Message to Call ProgressMessage mapping

S

4A.5 Generic digit transfer NS

4A.6 User network interaction

4A.6.1 Actions at a controlling exchange. Optional Backward Call Indicator, bit H User-

Network Interaction Indicator. Not supported (NS) ifreceived before ACM.

PS

4A.6.2 Actions at an intermediate exchange. Optional Backward Call Indicator, bit H User-

Network Interaction Indicator. Not supported (NS) ifit is received before ACM.

PS

4A.6.3 Actions at the originating exchange. Optional Backward Call Indicator, bit H User-

Network Interaction Indicator. Not supported (NS) ifit is received before ACM.

PS

4A.7 Network excessive delay

4A.7.1 Actions at a controlling exchange NS

4A.7.2 Actions at an intermediate exchange S

4A.7.3 Actions at an ACM controlling exchange S

4A.7.4 Actions at the originating exchange NS

4A.8 Service activation NS

4A.8.1 Service activation procedure NS

4A.9 Remote operations capability

4A.9.1 General description NS

4A.9.2 Remote operations procedure NS

4A.9.3 Error procedures NS

4A.10 Facility Message NS

Table 1 Switch-through when interworking. only No.7 to No.7 interworking is supported

PS

Table 2 Circuit Query State Actions NS





Reference

T1.113.4

Nokia'ssupport

Table 3 Timers in chapter T1.113.4. Support for different timers is presented in the

following table

PS

Table 4 Functional block diagram and SDL abbreviations

Table 5 SDL function blocks

Table 6 SPRC distribution of received signalling messages

Table 7 Call processing control states

Table 8 MPC states

Figures Figures 1 - 47 are omitted.

Annex A (Informative)

Annex B (Informative)

Annex C (Informative)

Annex D (Informative)

Annex E (Informative)

3.5.1 Timers in ANSI ISUP

Table 89. Timers in ANSI ISUP

Symbol Description ANSI value Nokia'svalue

T1 Waiting for RLC message (first time) 4-15 seconds 15 seconds

T2 Waiting for RES (user) message For more information,see ITU- TQ.767:Application of the ISDN User Part ofCCITT signalling system No. 7 for international ISDNinterconnections )

NS NS

T3 NS NS

T4 NS NS

T5 Waiting for RLC message (after repetitions) 1 minute 1 minute

T6 Waiting for RES (network) message 10-32 seconds 30 seconds

T7 Waiting for ACM (or ANM) message 20-30 seconds 30 seconds

T8 Waiting for COT message 10-15 seconds 15 seconds



Table 89. Timers in ANSI ISUP (cont.)


T9 Waiting for ANM message

T1.113-4 page 11 specifies the following: Awaitinganswer timer (T9) in Recommendation Q.764 is notspecified for the U.S. networks.

NS (2-4minutes)

NS

T10 Waiting for Dialling (ITU-TQ.767) NS NS

T11 Waiting for ACM message (in interworking situations) 15-20 seconds NS

T12 Waiting for BLA message 4-15 seconds 15 seconds

T13 Waiting for BLA message (after repetitions) 1 minute 1 minute

T14 Waiting for UBA message 4-15 seconds 15 seconds

T15 Waiting for UBA message (after repetitions) 1 minute 1 minute

T16 Waiting for RLC message, after RSC (first time) 4-15 seconds 5 seconds

T17 Waiting for RLC message, after RSC (after repetitions) 1 minute 1 minute

T18 Waiting for CGBA message 4-15 seconds 15 seconds

T19 Waiting for CGBA message (after repetitions) 1 minute 1 minute

T20 Waiting for CGUA message 4-15 seconds 15 seconds

T21 Waiting for CGUA message (after repetitions) 1 minute 1 minute

T22 Waiting for GRA message 4-15 seconds 15 seconds

T23 Waiting for GRA message (after repetitions) 1 minute 1 minute

T24 Waiting for continuity check result < 2 seconds 2 seconds

T25 CCR timing timer 1-10 seconds 10 seconds

T26 Delay before new CCR message 1-3 minutes 3 minute

T27 Wait for CCR after receiving COT indicating failure > 3 minutes 4 minute

T28 Wait for CQR message 10 seconds NS

T29 Congestion received while T29 not running (Q.767) NS NS

T30 Congestion received while T29 not running (Q.767) NS NS

T31 Unrelease ISDN UP end-to-end signalling connectionbased on connectionless SCCP

> 6 minutes NS

T32 Wait for first end-to-end message from remote end 3-5 seconds NS

T33 Wait for INF message 12-15 seconds 12 seconds

T34 Wait for COT/REL message after sending LPA message 10-15 seconds 15 seconds

T35 Wait for ST or minimum/fixed number of digits (Q.767) NS NS

T36 Wait for unsolicited INF message 2-4 seconds 4 seconds

T37 Wait for message from the tested ISDN UP 30 seconds NS




Table 89. Timers in ANSI ISUP (cont.)


TACC,r When TACC, expires, remove ACC controls in theexchange

5 seconds NS

TCCR Wait for LPA message after sending CCR message 2 seconds 2 seconds

TCCR,r Wait for CCR after receiving initial COT indicating failure 20 seconds 20 seconds

TCGB Wait for CGB (or CGU) message after receiving CGBmessage

5 seconds 5 seconds

TCRA Wait for IAM/REL aftter sending CRA 20 seconds NS

TCRM Wait for CRA 3-4 seconds NS

TCVT Wait for CVR 10 seconds NS

TEXM,d TEXM expires, send EXM to preceding exchange Networkdependent

NS

TGRS Wait for GRS message after receiving GRS message 5 seconds 5 seconds

THGA Initiated when carrier loss and terminated when carrierrestored.

0-5 minutes NS

TSCGA Waiting for success of initial demand continuity check inSCGA group

0-2 minutes NS

TSCGA,d Waiting for success of demand continuity check in SCGAgroup

5-120 seconds NS

3.5.2 Priority Assignment For ISUP Messages

Table 90. Priority Assignment For ISUP Messages

Message type Abbreviation Priority

Address Complete ACM 1

Answer ANM 2

Blocking Acknowledgement BLA 0

Blocking BLO 0

Continuity Check Request CCR 1

Confusion CFN 1

Circuit Group Blocking CGB 0

Circuit Group Blocking Acknowledgement CGBA 0

Circuit Group Unblocking CGU 0



Table 90. Priority Assignment For ISUP Messages (cont.)

Message type Abbreviation Priority

Circuit Group Unblocking Acknowledgement CGUA 0

Continuity COT 1

Call Progress CPG 1

Circuit Reservation Acknowledgement CRA 0

Circuit Reservation CRM 0

Exit (Intra Network Applications Only) EXM -

Circuit Group Reset Acknowledgement GRA 0

Circuit Group Reset GRS 0

Initial Address Message IAM 0

Information INF 1

Information Request INR 1

Loop Back Acknowledgement LPA 1

Release REL 1

Resume RES 1

Release Complete RLC 2

Reset Circuit RSC 0

Suspend SUS 1

Unblocking Acknowledgement UBA 0

Unblocking UBL 0

Unequipped Circuit Identification Code UCIC 1

3.6 Performance Objectives in the ISDN Application(T1.113.5)

No performance objectives have been specified.

3.7 Interworking with other signalling systems or userparts

Nokia supports interworking with the following signalling systems or userparts:




. 23B+D

. ANSI ISUP

. ANSI MF

. BICC

. BSSAP

. RANAP

. SIP



4 Support protocol description

/1/ ANSI MTP, Feature Description.

/2/ Release Binder, Signalling Description.

/3/ Mapping of External Data



Support protocol description



References

1. ANSI T1.113-2000 - Signalling System No. 7 (SS7) - IntegratedServices Digital Network (ISDN) User Part (Revision of T1.113-1995;includes two Supplements: T1.113a-2000 & T1.113b-2001) .

2. ITU-T Q.761 - Signalling System No. 7 - ISDN User Part functionaldescription .

3. ITU-T Q.762 - Signalling System No. 7 - ISDN User Part generalfunctions of messages and signals.

4. ITU-T Q.763 - Signalling System No. 7 - ISDN User Part formats andcodes .

5. ITU-T Q.764 - Signalling System No. 7 - ISDN User Part signallingprocedures.

6. Bellcore TR-NPL-000145, Issue 2, December 1993: CompatibilityInformation for Interconnection of a Wireless Services Provider anda Local Exchange Carrier Network.

7. Bellcore GR-1434-CORE, Issue 1, April 1994: CCS NetworkInterface Specification (CCSNIS) Supporting Wireless ServiceProviders.

8. Bellcore GR-905-CORE, Issue 1, March 1995: CCS NetworkInterface Specification (CCSNIS) Supporting NetworkInterconnection, Message Transfer Part (MTP), and IntegratedServices Digital Network User Part (ISDNUP).

9. Bellcore GR-317-CORE, Issue 1, February 1994: Switching SystemGeneric Requirements for Call Control Using the Integrated ServicesDigital Network User Part (ISDNUP).

10. Feature 1512: Global Call Reference, Feature Description.



References

Documents

Nokia ANSI ISUP Interface