Specifications

System Software Diagnostics Guide — September 2006 65
11
11.CAS Trace Reference
This chapter provides reference information about the CAS Trace tool.The following topics are
included:
• Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
• Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
• Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.1 Description
The CAS Trace tool enables you to track the bit level transitions on a robbed bit or CAS line. CAS
Trace prints messages on the screen in real time. The CAS Trace tool can be configured to output
the messages into a circular log file.
The CAS Trace tool is used for troubleshooting problems with an entire span. CAS Trace is used
for long-term debugging and logging for problems with timing, hung channels, and improper bit
states.
11.2 Guidelines
The CAS Trace tool consumes a portion of the CPU for each trunk that is logged and may generate
an exception if CTRL-C is used to exit the tool.
It may take several seconds to start the monitoring on all the trunks
The CAS instance is not valid until the line is in service, so you will have to run an application or
the Lineadmin and Phone tools to set the channel in-service before using this application. For
information about the Lineadmin tool, refer to the Administration Guide for the software release.
For information about the Phone tool, refer to Chapter 25, “Phone Reference”.
11.3 Options
The CAS Trace tool uses the following command line options:
-board <board list>
Logical ID of board (or boards) to trace (optional). The default is the lowest ID present in the
system. Use the listboards utility (Linux) or the Configuration Manager (DCM) (Windows) to
obtain the board’s logical ID.
Note: The listboards utility is described in the Administration Guide for the release and the
Configuration Manager is described in the Configuration Guides for the (Windows)
release.