Troubleshooting guide

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Cisco PGW 2200 Softswitch Release 9.8 Operations, Maintenance, and Troubleshooting Guide

OL-0800-14

Chapter 3 Cisco PGW 2200 Softswitch Platform Operations

Regular Operations

–

MOOS—Manually taken out of service.

–

OOS—Out of service.

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TRNS—Transient. The state is currently being changed.

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UNK—Unknown.

• BLK—Blocking state

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NONE—There is no block on the CIC. DS0 is available for use.

• TRANS—Number of active transactions.

The MML command shown in the following example displays information for a DPNSS virtual bearer

channel:

mml> rtrv-virt-tc:dpnss-path-1:

MGC-01 - Media Gateway Controller 2009-01-19 13:36:14.202 CST

M RTRV

"dpnss-path-1:VTC=33,CALL=IDLE,PST=IS,BLK=NONE"

"dpnss-path-1:VTC=34,CALL=IDLE,PST=IS,BLK=NONE"

"dpnss-path-1:VTC=35,CALL=IDLE,PST=IS,BLK=NONE"

"dpnss-path-1:VTC=36,CALL=IDLE,PST=IS,BLK=NONE"

"dpnss-path-1:VTC=37,CALL=IDLE,PST=IS,BLK=NONE"

"dpnss-path-1:VTC=38,CALL=IDLE,PST=IS,BLK=NONE"

Managing SIP Communications

The Cisco PGW 2200 Softswitch software supports SIP call control. You can use many of the procedures

that are defined for signaling channels and bearer channels to manage SIP communications. Use the

following procedures strictly for managing SIP communications:

• Managing the DNS Cache, page 3-60

• Retrieving SIP Call Information, page 3-62

Managing the DNS Cache

When you have provisioned the Cisco PGW 2200 Softswitch to function as a Session Initiation Protocol

(SIP) endpoint, you might need to manage the content of the DNS cache.

Displaying the Contents of the DNS Cache

To display the contents of the DNS cache, perform the following steps:

Step 1 Log in to the active Cisco PGW 2200 Softswitch.

Step 2 Start an MML session.

Step 3 Enter the sta-dns-info:sippath_name: “URL | cache_entry_name | null_string” command:

Where:

• sippath_name—MML name of the SIP signaling service that is associated with the DNS cache.

• URL—Associated world-wide-web (www) address. If you enter the associated URL in this

command, the command in Step 4 displays the IP address and the time-to-live (TTL) values.

• cache_entry_num—DNS cache entry number. If you enter the associated cache entry number in this

command, the command in Step 4 displays the URL, IP address, and TTL values.