PJSIP send notify

Your structure looks right. I have this in mine.

If you are going to use the URI, you need a default endpoint specified also. See this thread:

Finally, if you are using the URI, you need the full URI. It can be more than just the IP address and port, depending.

sip:[email protected]:35120
sip:[email protected]:12049;transport=TLS;x-ast-orig-host=10.254.103.215:12049