Hi,
After the call is answered the caller can hear the ringing sound as well as the other party on the other side. The party being called cannot here anything but the caller and does not complain about any problems.
This porblem only seems to occur when calls are being made from a SIP phone to an IAX trunk or phone. I have not problems when the SIP phones dial out via a ZAP channel.
This porblem is unfortunately sporadic, I would say it occurs 1 in 5 times.
I use the following dial macro:
[macro-iaxTrunkDial]
exten => s,1,Dial(IAX2/iaxGateway/${ARG1})
exten => s,n,Verbose(1,${DIALSTATUS})
exten => s,n,Goto(s-${DIALSTATUS},1)
exten => s-NOANSWER,1,Hangup
exten => s-BUSY,1,Hangup
exten => s-CHANUNAVAIL,1,Macro(zapDial,${ARG1})
exten => _s-.,1,NoOp