VSXi SIP Tracing Capabilities

5 yrs ago

In addition to packet traces via Tshark, the VSXi is able to record signaling messages to a log file via the SIP Trace module. This is great troubleshooting tool for issues that are not easily reproducible, have intermittent behavior or take long to reproduce (3 hour call).

Common examples of issues are:

SIP/TLS encrypted signaling
Registration issues
Dropped calls
Other signaling issues

The SIP trace module operates on a pattern matching operation. In other words anything contained in a SIP message will trigger the system to record the entire message. Common patterns that are used in the search are:

ANI
DNIS
Specific User-Agent
IP Address
Domain Name

To enable a SIP trace follow the steps below (where if you are searching for an ANI or DNIS it is the full number such as 8587542200):

Once you have collected the desired information, remember to disable the SIP trace.

It is recommended to be as specific as possible in the pattern to reduce the total log printed (which will speed up troubleshooting). A very generic matching pattern could result in lots of data written to disk causing a storage issue and/or increase loading on the system.