[asterisk-gui] No sound

[Matt Brown (HC)]

Hi Bob,

> Hi guys,
>
> I've been testing softphones in Windows and SuSE.  From outside the  
> office, I can make a call to a different extension and to an outside  
> number but neither the caller nor the callee can hear anything.  I  
> thought I was being stupid until I bought a Grandstream GXP 2020  
> which wouldn't speak to me either from outside the office.  It does  
> work inside the office.  I tested the softphone inside the office  
> and it works too.  Ok so it's the firewall.  I have port 5060 UDP  
> and 10001-20000 UDP open and pointed to the Asterisk box.  What am I  
> missing?  I'm getting so close to being able to go live with this  
> thing.
>

Just double check the /etc/asterisk/rtp.conf to make sure port range  
being used is correct. In addition I agree with Matt that it sounds  
like a NAT issue. Take a peek at sip.conf or users.conf for the  
extension in question and check nat=yes is set for that user/extension.

Regards

Matt Brown