01-02 BSS Signaling Tracing

2 BSS Signaling TracingAbout This Chapter

This describes the BSS signaling tracing, which consists of the signaling tracing on the Uminterface, Abis interface, A interface, Pb interface, and BSC-CBC interface, and single usersignaling tracing.

2.1 Tracing the Messages on the Um InterfaceThis describes how to trace all the layer 3 signaling messages on the Um interface through theLMT.2.2 Tracing Messages on the Abis InterfaceThis topic describes how to trace the RSL, OML, ESL, LAPD messages on the Abis interface.2.3 Tracing the Messages on the A InterfaceThis topic describes how to trace the BSSAP, MTP2, MTP3, and SCCP messages on the Ainterface.2.4 Tracing Messages on the Pb InterfaceThis topic describes how to trace the application messages and LAPD messages on the Pbinterface.2.5 Tracing the Messages on the BSC-CBC InterfaceThis describes how to trace signaling messages of the interfaces between the BSC and CBCthrough the LMT.2.6 Tracing User MessagesThis describes how to trace signaling messages on the interfaces of the specified user throughthe LMT.

HUAWEI BSC6000 Base Station SubsystemBSS Signaling Analysis Guide 2 BSS Signaling Tracing

Issue 01 (2007-11-26) Huawei Technologies Proprietary 2-1

2.1 Tracing the Messages on the Um InterfaceThis describes how to trace all the layer 3 signaling messages on the Um interface through theLMT.

Prerequisitel The LMT runs normally.l The communication between the BSC and the BTS is normal.

ContextTracing the messages on the Um interface includes the following:l Tracing layer 3 messages on the Um interfacel Supporting filtering messages based on TRXs or a maximum of 16 cellsl The data of the BSSAP messages on the A interface can be browsed.

ProcedureStep 1 On the Trace & Monitor tab page, choose Trace > Trace the Message at Um Interface. A

dialog box is displayed, as shown in Figure 2-1.

Figure 2-1 Tracing messages on the Um interface (set TRX as the filter condition)

Step 2 Set Filter Condition and Color.NOTE

When the Filter Condition is set to TRX or Cell, the execution interfaces are different. In this topic, theinstance when the Filter Condition is set to TRX is illustrated.Max Number: 16 indicates that the maximum number of cells that can be selected is 16.

2 BSS Signaling TracingHUAWEI BSC6000 Base Station Subsystem

BSS Signaling Analysis Guide

2-2 Huawei Technologies Proprietary Issue 01 (2007-11-26)

Step 3 Set the Tracing Mode to start the tracing.l If the Tracing Mode is set to Report, and click OK, the messages on the Um interface are

traced in the Report mode. The tracing result is shown in Figure 2-2.l If the Tracing Mode is set to Save on Server, and click OK, the messages on the Um

interface are traced in the Save on Server mode. The LMT no longer displays the tracingmessages.

Figure 2-2 Results of tracing messages on the Um interface

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2.2 Tracing Messages on the Abis InterfaceThis topic describes how to trace the RSL, OML, ESL, LAPD messages on the Abis interface.

2.2.1 Tracing the RSL Messages on the Abis InterfaceThis describes how to trace all the signaling messages on the Abis interface through the LMT.2.2.2 Tracing the OML Messages on the Abis InterfaceThis describes how to trace all the OML messages at Abis interface through the LMT.2.2.3 Tracing the ESL Messages on the Abis InterfaceThis describes how to trace all the ESL messages at Abis interface through the LMT.2.2.4 Tracing the LAPD Messages on the Abis InterfaceThis describes how to trace the LAPD messages on the Abis interface through the LMT.

2.2.1 Tracing the RSL Messages on the Abis InterfaceThis describes how to trace all the signaling messages on the Abis interface through the LMT.




ContextTracing the RSL messages on the Abis interface includes the following:l Tracing the RSL messages on the Abis interface based on TRXs or cells. Tracing messages

based on TRXs or cells (a maximum of 16 cells).l Tracing the RSL messages based on message types, such as measurement report, channel

request, paging, RLM, and TRXM.l The data of the BSSAP messages on the A interface can be browsed.

CAUTIONAfter the BTS connected to the Abis interface is moved manually, close the message traceof this type and restart the message trace function.

ProcedureStep 1 Click the Trace & Monitor tab. A dialog box is displayed, as shown in Figure 2-3.




Figure 2-3 Trace & Monitor tab page

Step 2 Choose Trace > Trace the Message at Abis Interface > RSL Message. A dialog box isdisplayed, as shown in Figure 2-4.



Figure 2-4 Trace the RSL Message at Abis Interface dialog box

Step 3 Set Message Type, Filtering Condition, Color, and Tracing Mode.Step 4 Click OK.

l In Figure 2-4, if the Tracing Mode is set to Save on Server, click OK, the RSL messageson the Abis interface are traced in the Save on Server mode. The LMT no longer receivesthe tracing messages.

l In Figure 2-4, if the Tracing Mode is set to Report, click OK, the RSL messages are tracedin the Report mode. The tracing result is shown in Figure 2-5.




Figure 2-5 Tracing the RSL messages on the Abis interface

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2.2.2 Tracing the OML Messages on the Abis InterfaceThis describes how to trace all the OML messages at Abis interface through the LMT.


ContextTracing the OML messages on the Abis interface includes the following:l Tracing the OML messages at Abis interface based on sites (a maximum of 16 sites)l Tracing the OML messages at Abis interface based on message types, such as public

messages and OM messages.l The data of the BSSAP messages on the A interface can be browsed.





Step 2 Choose Trace > Trace the Message at Abis Interface > OML Message. A dialog box isdisplayed, as shown in Figure 2-7.

Figure 2-7 Trace the OML Message at Abis Interface dialog box




Step 3 Set Message Type, Color, and Tracing Mode. Select cells from the Candidate Cells box andadd them to the Selected Cells box.

Step 4 Click OK.l In Figure 2-7, if the Tracing Mode is set to Save on Server, click OK, the OML messages

on the Abis interface are traced in the Save on Server mode. The LMT no longer receivesthe tracing messages.

l In Figure 2-7, if the Tracing Mode is set to Report, click OK, the OML messages are tracedin the Report mode. The tracing result is shown in Figure 2-8.

Figure 2-8 Tracing the OML messages on the Abis interface

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2.2.3 Tracing the ESL Messages on the Abis InterfaceThis describes how to trace all the ESL messages at Abis interface through the LMT.


ContextTracing the ESL messages on the Abis interface includes the following:l Tracing the ESL messages on the Abis interface based on sites (a maximum of 16 sites)l Tracing the ESL messages on the Abis interface based on message types, such as public

messages and OM messages.





Step 2 Choose Trace > Trace the Message at Abis Interface > ESL Message. A dialog box isdisplayed, as shown in Figure 2-10.




Figure 2-10 Trace the ESL Message at Abis Interface dialog box

Step 3 Set Message Type, Color, and Tracing Mode. Select cells from the Candidate Cells box andadd them to the Selected Cells box.

Step 4 Click OK.l In Figure 2-10, if the Tracing Mode is set to Save on Server, click OK, the OML messages

on the Abis interface are traced in the Save on Server mode. The LMT no longer receivesthe tracing messages.

l In Figure 2-10, if the Tracing Mode is set to Report, click OK, the ESL messages are tracedin the Report mode. The tracing result is shown in Figure 2-11.

Figure 2-11 Tracing the ESL messages on the Abis interface

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2.2.4 Tracing the LAPD Messages on the Abis InterfaceThis describes how to trace the LAPD messages on the Abis interface through the LMT.


ContextTracing the LAPD messages on the Abis interface includes the following:l Tracing the LAPD messages on the Abis interface; supporting tracing TRXs and BTSsl Tracing link messages based on the link number of the TRXl Tracing link messages based on the link number of the BTSl The data of the BSSAP messages on the A interface can be browsed.






Step 2 Choose Trace > Trace the Message at Abis Interface > LAPD Message. A dialog box isdisplayed, as shown in Figure 2-13.



Figure 2-13 Trace the LAPD Message at Abis Interface dialog box

Step 3 Set the parameters in the Link Type, Location, Color, and Tracing Mode areas.Step 4 Click OK.

l In Figure 2-13, if the Tracing Mode is set to Save on Server, click OK, the LAPD messageson the Abis interface are traced in the Save on Server mode. The LMT no longer receivesthe tracing messages.

l In Figure 2-13, if the Tracing Mode is set to Report, click OK, the LAPD messages aretraced in the Report mode. The tracing result is shown in Figure 2-14.




Figure 2-14 Tracing the LAPD messages on the Abis interface

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2.3 Tracing the Messages on the A InterfaceThis topic describes how to trace the BSSAP, MTP2, MTP3, and SCCP messages on the Ainterface.

2.3.1 Tracing the BSSAP Messages on the A InterfaceThis describes how to trace all the layer signaling messages on the A interface, such asconnection-oriented messages and non-connection-oriented messages.2.3.2 Tracing the MTP2 Messages on the InterfaceThis describes how to trace all the layer 2 messages on the A interface, except the FISU message.2.3.3 Tracing the MTP3 Messages on the A InterfaceThis describes how to trace all the layer 3 messages at A interface.2.3.4 Tracing the SCCP Messages on the A InterfaceThis describes how to trace the SCCP messages on the A interface based on the DPC, the SCCPuser message, and the MTP3 primal message.

2.3.1 Tracing the BSSAP Messages on the A InterfaceThis describes how to trace all the layer signaling messages on the A interface, such asconnection-oriented messages and non-connection-oriented messages.



Prerequisitel The LMT runs normally.l The communication between the BSC and the MSC is normal.

ContextTracing the BSSAP messages on the A interface includes the following:l Tracing the BSSAP messages traces all the layer 3 signaling messages on the A interface,

such as connection-oriented messages and non-connection-oriented messages.l For connection-oriented messages, the BSSAP messages on the A interface are traced based

on cells. The maximum number of cells for this purpose is 16.l For non-connection-oriented messages, the BSSAP messages on the A interface are traced

based on the message type, including DTAP, BSSMAP, and Paging messages.l The data of the BSSAP messages on the A interface can be browsed.






Step 2 Choose Trace > Trace the Message at A Interface > BSSAP Message. A dialog box isdisplayed, as shown in Figure 2-16.

Figure 2-16 Trace the BSSAP Message at A Interface dialog box

Step 3 Set Message Type, Color, Tracing Mode, and Site. Select cells from the Candidate Cells boxand add them to the Selected Cells box.

Step 4 Click OK.l In Figure 2-16, if the Tracing Mode is set to Save on Server, click OK, the BSSAP

messages are traced in the Save on Server mode. The LMT no longer receives the tracingmessages.

l In Figure 2-16, if the Tracing Mode is set to Report, click OK, the BSSAP messages aretraced in the Report mode. The tracing result is shown in Figure 2-17.



Figure 2-17 Tracing the BSSAP messages at A interface

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PostrequisiteIn Figure 2-17, right-click the message to be analyzed. A shortcut menu is displayed, as shownin Figure 2-18.

Figure 2-18 Trace the BSSAP Message at A Interface (1)




NOTEAs shown in Figure 2-17, the shortcut menu provides the following options:l To clear the displayed messages at A interface, choose Clear Message.l To stop scrolling the displayed messages at A interface, choose Stop Scroll.l To stop the current tracing task, choose Stop Trace.l To restart the tracing, choose Restart Trace.l To view the established tracing task, choose View Task.l To search for the specified character string, choose Search.l To save the selected messages at A interface, choose Save Selection.l To save all the traced messages at A interface, choose Save All.

2.3.2 Tracing the MTP2 Messages on the InterfaceThis describes how to trace all the layer 2 messages on the A interface, except the FISU message.


ContextTracing the MTP2 messages on the A interface includes the following:l Tracing the layer 2 messages on the A interface, not including the FISU messagel Tracing the MTP2 messages based on the specified subrack, slot, and link number.l Filtering MTP2 messages based on message types, such as the LSSU message and MSU

message.l The data of the BSSAP messages on the A interface can be browsed.





Step 2 Choose Trace > Trace the Message at A Interface > MTP2 Message. A dialog box isdisplayed, as shown in Figure 2-20.




Figure 2-20 Trace the MTP2 Message at A Interface dialog box

Step 3 Set Message Type, Location, Tracing Mode, and Color.Step 4 Click OK.

l In Figure 2-20, if the Tracing Mode is set to Save on Server, click OK, the MTP2 messagesare traced in the Save on Server mode. The LMT no longer receives the tracing messages.

l In Figure 2-20, if the Tracing Mode is set to Report, click OK, the MTP2 messages aretraced in the Report mode. The tracing result is shown in Figure 2-21.



Figure 2-21 Tracing the MTP2 messages on the A interface

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2.3.3 Tracing the MTP3 Messages on the A InterfaceThis describes how to trace all the layer 3 messages at A interface.

Prerequisitel The LMT runs normally.l The communication between the LMT and the BSC is normal.l The MTP3 links are configured.

ContextTracing the MTP3 messages on the A interface includes the following:l Tracing the MP3 messages based on the link number, link set, and DSP.l Tracing the MP3 messages based on the message types, such as the SNM, SLT, MT, and

L2_CHANGE.






Step 2 Choose Trace > Trace the Message at A Interface > MTP3 Message. A dialog box isdisplayed, as shown in Figure 2-23.



Figure 2-23 Tracing the MTP3 Messages at A Interface

Step 3 Set Message Type, Tracing Type, Location, Message Filter, Tracing Mode, and Color.Step 4 Click OK.

l In Figure 2-23, if the Tracing Mode is set to Save on Server, click OK, the MTP3 messagesare traced in the Save on Server mode. The LMT no longer receives the tracing messages.

l In Figure 2-23, if the Tracing Mode is set to Report, click OK, the MTP3 messages aretraced in the Report mode. The tracing result is shown in Figure 2-24.




Figure 2-24 Tracing the MTP3 messages at A interface

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2.3.4 Tracing the SCCP Messages on the A InterfaceThis describes how to trace the SCCP messages on the A interface based on the DPC, the SCCPuser message, and the MTP3 primal message.

Prerequisitel The LMT runs normally.l The communication between the LMT and the BSC is normal.l The SCCP link is configured.





Step 2 Choose Trace > Trace the Message at A Interface > SCCP Message. A dialog box isdisplayed, as shown in Figure 2-26.




Figure 2-26 Tracing the SCCP Messages on the A Interface

Step 3 Set the parameters in the Tracing Type, Location, Tracing Mode, and Color areas.Step 4 Click OK.

l In Figure 2-26, if the Tracing Mode is set to Save on Server, click OK, the SCCP messagesare traced in the Save on Server mode. The LMT no longer receives the tracing messages.

l In Figure 2-26, if the Tracing Mode is set to Report, click OK, the SCCP messages aretraced in the Report mode. The tracing result is shown in Figure 2-27.



Figure 2-27 Tracing the SCCP messages on the A interface

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2.4 Tracing Messages on the Pb InterfaceThis topic describes how to trace the application messages and LAPD messages on the Pbinterface.

2.4.1 Tracing the Application Messages on the Pb InterfaceThis describes how to trace the application messages on the the Pb interface through the LMT.2.4.2 Tracing the LAPD Messages on the Pb InterfaceThis describes how to trace the layer 2 messages on the Pb interface through the LMT. You cantrace the LAPD messages on the Pb interface based on the specified link.

2.4.1 Tracing the Application Messages on the Pb InterfaceThis describes how to trace the application messages on the the Pb interface through the LMT.


ContextTracing the application messages on the Pb interface includes the following:




l Tracing application messages on the Pb interfacel Tracing application messages on the Pb interface for the specified PCU.l Tracing application messages on the Pb interface based on cells (a maximum of 16 cells).l Tracing PAGING messages, CONFUSION messages, PCIC messages, and other messagesl The data of the BSSAP messages on the A interface can be browsed.



Step 2 Choose Trace > Trace the Message at Pb Interface > Application Message. A dialog box isdisplayed, as shown in Figure 2-29.



Figure 2-29 Trace the Application Message at Pb Interface dialog box

Step 3 Set Message Type, Location, Color, and Tracing Mode. Select cells from the Candidate Cellsbox and add them to the Selected Cells box.

Step 4 Click OK.l In Figure 2-29, if the Tracing Mode is set to Report, click OK, the application messages

are traced in the Report mode.l In Figure 2-29, if the Tracing Mode is set to Save on Server, click OK, the application

messages on the Pb interface are traced in the Save on Server mode. The LMT no longerreceives the tracing messages.

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2.4.2 Tracing the LAPD Messages on the Pb InterfaceThis describes how to trace the layer 2 messages on the Pb interface through the LMT. You cantrace the LAPD messages on the Pb interface based on the specified link.


ContextTracing the LAPD messages on the Pb interface includes the following:l Tracing layer 2 messages on the Pb interfacel The data of the BSSAP messages on the A interface can be browsed.






Step 2 Choose Trace > Trace the Message at Pb Interface > LAPD Message. A dialog box isdisplayed, as shown in Figure 2-31.



Figure 2-31 Trace the LAPD Message at Pb Interface dialog box

Step 3 Set the parameters in the Message Type, Color, and Tracing Mode areas.Step 4 Click OK.

l In Figure 2-31, if the Tracing Mode is set to Report, click OK, the application messagesare traced in the Report mode.

l In Figure 2-31, if the Tracing Mode is set to Save on Server, click OK, the LAPD messageson the Pb interface are traced in the Save on Server mode. The LMT no longer receives thetracing messages.

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2.5 Tracing the Messages on the BSC-CBC InterfaceThis describes how to trace signaling messages of the interfaces between the BSC and CBCthrough the LMT.





ContextTracing the messages on the BSC-CBC interface includes the following:l Tracing signaling messages of the interfaces between the BSC and CBC through the LMT.l The data of the BSSAP messages on the A interface can be browsed.

ProcedureStep 1 On the Trace & Monitor tab page, choose Trace > Trace the Message at BSC-CBC

Interface. A dialog box is displayed, as shown in Figure 2-32.

Figure 2-32 Trace the Message at BSC-CBC Interface dialog box

Step 2 Set Tracing Mode and Color, and then click OK.l If the Tracing Mode is set to Report, the BSC-CBC interface messages are traced in the

Report mode.l If the Tracing Mode is set to Save on GBAM. The BSC-CBC interface messages are traced

in the Save on Server mode. The LMT no longer displays the tracing messages.----End

2.6 Tracing User MessagesThis describes how to trace signaling messages on the interfaces of the specified user throughthe LMT.




ContextTracing the user messages includes the following:l Tracing signaling messages on the A interface, Abis interface, Pb interface, Um interface,

and BSC-CBC interfacel Tracing messages on the specified interfacel Tracing the specified traced users through IMSI, IMEI, TMSI, MSISDN, or channell The data of the BSSAP messages on the A interface can be browsed.

ProcedureStep 1 On the Trace & Monitor tab page, choose Trace > Trace User Message. A dialog box is

displayed, as shown in Figure 2-33.

Figure 2-33 Trace User Message dialog box

Step 2 Set Interface Type, and Color, type the IMSI, TMSI, MSISDN, IMEI, or channel of the userto be traced.

Step 3 Set the Tracing Mode to start the tracing.l If the Tracing Mode is set to Report, and click OK, the interface messages of the user are

traced in the Report mode. The tracing result is shown in Figure 2-34.




Figure 2-34 Result of tracing user messages

l If the Tracing Mode is set to Save on Server, and click OK, the messages on the userinterface are traced in the Save on Server mode. The LMT no longer displays the tracingmessages.

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2 BSS Signaling Tracing2.1 Tracing the Messages on the Um Interface2.2 Tracing Messages on the Abis Interface2.2.1 Tracing the RSL Messages on the Abis Interface2.2.2 Tracing the OML Messages on the Abis Interface2.2.3 Tracing the ESL Messages on the Abis Interface2.2.4 Tracing the LAPD Messages on the Abis Interface

2.3 Tracing the Messages on the A Interface2.3.1 Tracing the BSSAP Messages on the A Interface2.3.2 Tracing the MTP2 Messages on the Interface2.3.3 Tracing the MTP3 Messages on the A Interface2.3.4 Tracing the SCCP Messages on the A Interface

2.4 Tracing Messages on the Pb Interface2.4.1 Tracing the Application Messages on the Pb Interface2.4.2 Tracing the LAPD Messages on the Pb Interface

2.5 Tracing the Messages on the BSC-CBC Interface2.6 Tracing User Messages

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01-02 BSS Signaling Tracing