Im not sure what is going on there but I wanted to mention that Asterisk 1.8 is completely EOL, there will be no further fixes, even security fixes. For new installations you should use Asterisk 13 which is the most recent LTS.https://wiki.asterisk.org/wiki/display/AST/Asteris..
Author : Rusty Newton
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For those wandering web-searching souls:https://issues.asterisk.org/jira/browse/ASTE..
Sorry to bump an old thread, but I wanted to make sure a link to this relevant issue was here for the archives:https://issues.asterisk.org/jira/browse/ASTE..
We cant do much with part of your debug. Youll want to post a pastebin link to your full SIP trace, and be sure that it includes at least VERBOSE messages turned up to 5.[1]Work on WebRTC support is on-going, so youll want to test in the very lat..