ScopTEL includes a SBC that does a very good job of handling NAT’d extensions and trunks when the peer supports RPORT.
This article covers the recommended configuration for ScopTEL and NAT.
- ICE/STUN/TURN are not mandatory and aren’t recommended
- There are mandatory settings when ScopTEL is not exposed directly to the Internet on its public interface and its sitting behind a third party NAT router. This article does not cover third party router configurations or port forwarding requirements.
- The default ports used for ScopTEL SIP traffic are:
- udp/5060 (used for UDP SIP signalling traffic)
- tcp/5060 (used for TCP SIP signalling traffic)
- tcp/5061 (used for TLS/SRTP SIP signalling traffic)
- udp/10000-20000 (used for UDP SIP RTP traffic)
- tcp/10000-2000 (used for SIP SRTP traffic)