I have Asterisk 13.10.0-rc1 inside my network with private address, also I have bidirectional (1:1) nat mapping from 220.127.116.11 to this address. My ouside provider is 18.104.22.168.
Calls from outside to my Asterisk is working fine! I have RTP flow. The same thing for calls to outside from one of my internal phones connected to my Asterisk within private addresses. Everything works fine. But if I get the call from outside and redirect it by Dial app back to provider on another callee, I saw no any RTP traffic via Asterisk. Could you tell me why?
Scheme: A calls B, B calls C
(A - external phone from my SIP provider, B - the extension in my Asterisk, C - another external phone I call via my SIP provider).
See output debug at http://goo.gl/xmvsWY
allow = alaw
nat = no
directmedia = no
dtmfmode = rfc2833