Tracing the PS User Messages

This describes how to trace the Gb/Abis/Um signaling messages or the Um data blocks of a specified user on the LMT. The user is specified by the IMSI or TLLI. It is applicable to the process of identifying problems, such as specifying the dialing test, which helps identifying the PS problem.

Prerequisites

Context

Procedure

1. On the Trace & Monitor tab page, choose Trace > Trace PS Message > Trace PS User Message. A dialog box is displayed, as shown in Figure 1.
   Figure 1 Trace Ps User Message dialog box
   
   

2. Select Interface Type and Tracing Mode, and set the IMSI or TLLI of the user to be traced.
   NOTE:

   To select Trace Um Data Block, you need to set Interface Type to Um Interface first.

   • If you select IMSI, you must determine the reassignment strategy on the MSC side. If the MS initiates an IMSI call, you can start tracing by IMSI.
   • If you select TLLI, you must query the TLLI of the MS. You can run the DSP MSCONTEXT command on the LMT to query the TLLI of the MS.

3. Click OK to start tracing.

Result

Postrequisite