0
votes
2answers
521 views

Firewall issue with multiple SIP PROXY / REGISTRAR servers

We have a pair of Internet-facing SIP PROXY/REGISTRAR servers (for resilienced and load-balancing). When a SIP phone registers, it will be handled by one of the REGISTRAR servers (round-robin DNS) - ...
4
votes
3answers
3k views

Unregister SIP UAC message

I've looked so much on the internet, but I could not find a any SIP Unregister example, and when I search RFC 3261,3665 the word does not even appear, perhaps I'm searching for the wrong phrase. I ...