Troubleshooting Tips

Cisco High-Density Analog Voice and Fax Network Module

Configuration Tasks

Step 6 To verify the call status for all voice ports, use the show voice call summary command.

Router# show voice call summary

Step 7 To display the contents of the active call table, which shows all of the calls currently connected through the router or concentrator, use the show call active voice command.

Router# show call active voice

Step 8 To display the contents of the call history table, use the show call history voice command. To limit the display to the last calls connected through this router, use the keyword last and define the number of calls to be displayed with the argument number. To limit the display to a shortened version of the call history table, use the brief keyword.

Router# show call history voice [last number brief]

The following sections will assist in analyzing and troubleshooting voice port problems:

•Troubleshooting Chart, page 24

•Voice Port Testing Commands, page 25

To troubleshoot the high density analog network module, perform the following steps:

•To display the ccaal2 function calls during call setup and teardown, use the debug ccaal2 session privileged EXEC command.

•To trace the state transition of the RAS state machine based on the processed events, use the debug cch323 ras privileged EXEC command.

•To enable debugging for DSP API message events, use the debug dspapi all EXEC command.

•To display ASN1 contents of RAS and Q.931 messages, use the debug h255 asn1 privileged EXEC command.

•To enable debugging for Host Port Interface (HPI) message events, use the debug hpi all EXEC command.

•To display debugging information for all components of the Voice Call Manager, use the debug voice all privileged EXEC command

•To trace the execution path through the call control API, use the debug voip ccapi inout EXEC command.

•To trace error logs in the call control API, use the debug voip ccapi error EXEC command.

•To enable debugging on all virtual voice port module (VPM) areas, use the debug vpm all command.

•To turn off all port level debugging, use the no debug vpm all command. It is usually a good idea to turn off all debugging and then enter the debug commands you are interested in one by one. This will help to avoid confusion about which ports you are actually debugging

•To show messages from the digital signal processor (DSP) on the V.Fast Class (VFC) modem to the router, use the debug vtsp dsp EXEC command.

Cisco IOS Release 12.2(2)XT and 12.2(8)T