[asterisk-users] One Way Audio Problem

[Gordon Henderson]

On Sun, 12 Oct 2008, GNUbie wrote:

> Hello all,
>
> I've been lobbying for some time at the #asterisk IRC channel. Until
> now, I still can't find a solution to my one way audio problem. I
> rebuilt the Asterisk-1.4.21.2 from the Debian Testing repository on my
> Debian Etch. I got a Digium TDM400P with 1 FXO (channel 4) and 1 FXS
> (channel 1). My SIP extension phone located inside the LAN is a SNOM
> 300 IP phone.

You mention the SIP phone being inside the LAN. Where is the Asterisk box?

IME: One-way audio problems are almost always casued by NAT gateways 
and/or incorrect NAT settings in sip.conf and/or incorrect IP address or 
extenal proxy settings in the SIP phone.

Gordon