If you want to show timings, use the log files, not a screen scrape, and make sure you include the end of the call.
If this were SIP, you would want the log from the remote side,but I don’t know enough about IAX to know if it has the same possible behaviour as the SIP late offer case with incompatible codecs. Again for SIP you would want sip debugging along with core debug level 5, to see what codecs were being offered. I presume the equivalent debugging tools are available for IAX.