We've found the problem.
For anyone seeing this same problem in the future, the underlying
problem was a miss-placed entry in our pjsip.conf
callerid=0
If this is set, any changes to Remote-Party-ID are ignored, even when
CONNECTEDLINE(num) is called in the dialplan. I don't know if this
We've been using Asterisk 16 for a while now, and tried turning on
send_rpid = yes in my pjsip config for end points. This solves a
problem we're having where attended transfers aren't updating the
CallerID when the transfer is complete (it would show the callerID of
the party attempting the
