[Asterisk-Users] Chan IAX2 errors while calling Toll Free numbers using IAXTEL

[Salil Khamkar]

Hi List,

While trying to calling Toll Free numbers using IAXTEL, the call connects, I
hear about 2 seconds of voice and then the voice drops off and I get the
following error message which keeps scrolling across my console screen.

WARNING[-167797840]: chan_iax2.c:5967 socket_read: Received mini frame
before first full voice frame

Asterisk shows that the format of this call is GSM.

However if I make a call to the same TOLL Free number using the FWD network
from the asterisk box then the call goes through fine. In this case Asterisk
shows that the format for the call is ulaw.

Any idea what the issue might be ?

Thanks
--
Salil