This describes how to trace all the Radio signaling link(RSL) messages on the Abis interface on the LMT. The messages consist of measurement report, channel request message, paging message, RLM message, and TRXM message.
Prerequisites
- The LMT runs normally.
- The communication between the BSC and the BTS is normal.
Context
Tracing messages based on TRXs or cells (a maximum of 16 cells)
For details of Message Type, refer to Message Types.
For details of Tracing Mode, refer to Tracing Modes.
CAUTION: After the BTS connected to the Abis interface is moved manually, close the message trace of this type and restart the message trace function.
The following description is based on the configuration using the GOMU.
Procedure
- On the Trace & Monitor tab page,
choose . A dialog box is displayed, as shown in Figure 1.
This message is the display record of the interaction between the BSC and BTS call signaling and is an important measure of tracing the call procedure.
- Set Message Type, Filtering Condition, Color, and Tracing Mode.
- Click OK.
Result
- If the operation is successful:
- If the tracing mode is Save on GOMU, the LMT does not display the traced messages. You can review the output file of the traced message. For details, refer to Reviewing Trace Message Files.
- If the tracing mode is Report, a dialog box is displayed, prompting the information of the message tracing task, as shown in Figure 2.
- If the operation fails, a dialog box is displayed, prompting the possible causes.
Postrequisite
You can double-click a message to view the detailed information.
- Clear Message: Clear the displayed messages.
- Stop Scroll: Stop scrolling the displayed messages.
- Stop Trace: Stop the current tracing task.
- Restart Trace: Restart the tracing task.
- View Task: View the established tracing task.
- Search: Search for the specified character string in the displayed messages.
- Save Selection: Save the selected messages.
- Save All: Save all the traced messages.