[Asterisk-Users] Newbie question-no outgoing audio

[Ben Witso]

Hi- let me start off by saying I'm a newbie to Asterisk and this list 
and I'll also apologize up front for stupid questions.

I have Asterisk running and 2 SIP phones (X-Lite) plus an iaxtel 
gateway set up. I used the configurations from the O'Reilly article and 
I haven't even set up voice mail (the only change was to add the iaxtel 
entry). My problem is the audio out from my SIP phone isn't reaching 
the destination phone (whether it is the other SIP phone or a PSTN/POTS 
phone that I am calling through the iaxtel gateway). The call makes it 
through OK and audio comes back from the remote end. The audio looks 
like it is leaving the SIP phone - the level meter is reacting to the 
speech - but it doesn't reach the other end. Also - I have tried 
turning off some of the codecs in the X-Lite phone to see if it was a 
codec compatibility problem with no success. Any ideas? Is this likely 
a SIP phone setup problem? Or a config setting? (something in the echo 
canceling maybe??)

TIA for any help.

Ben
(Once this is set up I might have to re-record all the prompts in the 
en-us-mn dialect as mentioned earlier) :)