Currently, exists any way to use STUN to overwrite IP and Port in SDP, without ICE? I’m projecting a scalable voip system based on Asterisk in K8S, and to reduce costs avoiding implementing a new centralized RTP Proxy/Engine server, I was thinking in to use Google Cloud NAT service (with Edpoint Independent Mapping) to mapping external RTP ports to internal RTP ports for asterisk farm, but this SDP trick is necessary for that.
Do you mean for each RTP session allocated for a call, to do a STUN request to get the public IP address/port (to place into the c=) and potentially open up a NAT mapping - versus just using STUN to discover the outside IP address? If so, no. That doesn’t exist in Asterisk.