Explanation/Reference:
Explanation:
How to Capture Session Initiation Protocol (SIP) debug Logs
Note: Ensure SSH session output is captured.
1.SSH into the codec CLI and enter these commands:
♦ log ctx SIPPacket debug 9
♦ log output on(This outputs all the logs to the SSH session terminal session screen.)
2. Start a call and recreate the problem.
3.Enter the log output off and log ctx SIPPacket debug off commands.
How to Collect Packet Capture/ Endpoint Logs from TC Endpoints
1.From the Web GUI choose Diagnostics > Log files and enable extended logging with full packet capture.
2. Start a call and recreate the problem. Note that packet capture can only be enabled for 3 minutes.
3.From the Web GUI choose Diagnostics > Log files and download the complete log archive and packet capture.
Other Information Required
Complete call flow with all devices involved

Called and Calling number

Date and time of the issue occurred

Reference: http://www.cisco.com/c/en/us/support/docs/collaboration-endpoints/telepresence-codec- c40/119207-ts-failures-end-ccm-00.pdf