I open this case other time because we continue with the same problems without solution.
In my company we are having some problems with the Ringing on incoming calls as the client call us and he doesn’t listen the ringing sound.
This only ocurred if I use SIP protocol, if I use IAX works correctly. Capturing traffic during the calls I see that we don’t send Ringing packets.
Also in the dialplan, if I use Answer and Wait the Ringing doesn’t works, however if I use Playback with a silence works perfectly:
;exten => s,n,Answer
;exten => s,n,Wait(2)
exten => s,n,Playback(silence/1)
exten => s,n,Queue(100,rTt)
exten => s,n,Hangup