Audio Proxy?

My firewall only allows a certain number of outbound nodes, I would like to add a couple more voip phones, however the firewall treats these as an extra node and blocks the outbound audio. The sip channel works fine through the main asterisk server, so i can make calls, lister, but not say anything.

Is it possible for all audio to be transmitted through the asterisk server, rather than directly?

Thanks,

Jim

Set canreinvite to no. However, I’m not convinced that this will help, as you will still need RTP streams to every device that is outside the firewall.