Troubleshooting guide

9-45
Cisco Broadband Local Integrated Services Solution Troubleshooting Guide
OL-5169-01
Chapter 9 Troubleshooting Cisco Media Gateways
Physical Indicators
Voice Is Distorted
Find out the compression DSP that the call is on. Use the shellConn command dspm_get_err to display
error statistics on the DSP. If the error count is non-zero, and keeps increasing as this command is entered
again, then this is a source of the problem.
VISM Card Has All Leds Turned Off After Insertion In A Chasis Cause
The VISM card is not inserted completely in the slot. Firmware does not see the Card Insert Bit status
as set.
Action
Make sure that the VISM card is properly seated in the slot, with the top and bottom half portions of the
VISM card making electrical contact with back plane.
VISM Logs
VISM logs describe the following:
• Date & time of the log
• Slot number of the VISM card from which a message is logged
• Process on the VISM card that logged the message
• Severity of the message — if it is a fatal error causing card reboot, severity is 1. For all other
messages, severity is 6.
• Message number, found in /include/vism_error.h
• Single line description — the log message.
VISM to RPM Connection Problems
Debugging/Correlating SGCP Messages Between Call Agent and VISM Gateway
Three levels of counters are available to determine whether any SGCP messages are lost between the
Call agent and VISM. At the lowest level dmciPrintShmem can be used to display the DMCI blocks
transferred between the host and the DM processors.
dmciPrintMsgCnt can be used to display the counters corresponding to specific message types. This
command is extremely useful to make sure that for every SGCP message received from the Call agent,
a response is sent.