Pjsip extension in asterisk info with crazy (hexadecimal) name

[brk]

Here is what I see in my asterisk info, under the “all” section. Counted my PJSIP extensions and it looks like it’s an extra.

PJSIP 7b6d3950-22ea-497a-b1eb-1d7e831f83bb OFFLINE

I do not see it in the peers / PJSIP section. Nor does it show up in “pjsip show aors” or “pjsip show contacts”

[jcolp (Joshua Colp)]

This was discussed recently.

Unknown PJSIP Channel

This made me remember an old implementation detail. When rejecting calls or other SIP messages, we challenge them for authentication (even if they match no endpoint) so that outside parties can’t enumerate valid usernames. This is done by having an internal “artificial” endpoint get created whose sole purpose is to do this. Its name is that of a UUID, and it wouldn’t show up in “pjsip show endpoints” because its existence is confined to the first level of handling of traffic. It’s possible that …