[asterisk-users] Cannot hear voice through SIP Phone from one side

[Todd Houle]

On Feb 5, 2008, at 3:32 PM, Sanjoy Rath wrote:

> I have a asterisk server. Two SIP Soft XLites are connected to the  
> server. I am able to make
> calls from one SIP Phones to the other SIP Phones and landlines  
> successfully. The SIP Soft Phone on th eother side can hear my voice  
> but I cannot hear their voice.
>
> They can call my local cell phone as well. Samething, they can hears  
> my voice, I cannot hear their voice.
>

You can read this:
http://www.asteriskguru.com/tutorials/sip_nat_oneway_or_no_audio_asterisk.html

In short, adding code similar to the following to your sip.conf should  
fix it.

[general]
externip = 99.230.47.247
localnet = 192.168.2.0/255.255.255.0

   Todd