asterisk users - Dec 2004 - Chan IAX2 errors while calling Toll Free numbers using IAXTEL

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

Try insert below 2 records to the extension table, 

INSERT INTO `extensions_table` VALUES (1, 'mycontext', '_1.', 1,
'AGI',
'pstn.agi');

INSERT INTO `extensions_table` VALUES (2, 'mycontext', '_2.', 1,
'AGI',
'pstn.agi');

Asterisk will make CPU 100% load and hang.