[Asterisk-Users] Polycom 500 Sound Problem

[C F]

It looks like a NAT issue.

On 6/20/05, Matt <cyberguy at voicenet.com> wrote:
>  
> Hi all, 
>   
> I've been messing around with the g729 codec in some phones I use and had
> made all phones use the codec for all calls for testing purposes.  The
> problem is when I attempt to dial out on my Polycom IP 500 (test happens to
> be calling my cell phone) I can only hear sound coming one way, I recieve
> nothing from one user, just silence, yet I can talk one way perfectly.  Now
> I tried the same call (forced g729) on my Cisco 7960 and had no problem
> connecting the call and having conversation heard both ways.  I originally
> thought perhaps since I had only purchased one g729 channel license that it
> may cause such a problem, but then why does my 7960 connect with g729?  I
> also had some problems with a SNOM 220 I had tried out as the audio was
> non-existant on both ends if I remember correctly, but I havent tried that
> one in a while so I may be incorrect.  My primary concern is the Polycom
> anyway. 
>   
> I even had a buddy couble check through the gateway I am using that both
> calls went through as g729 and were connected (which obviously they were if
> any audio was heard).  Is there something I am missing in the config on the
> Polycom 500?  I am 99% sure the firmware is up-to-date... 
>   
> Thanks for any help, 
>   
> Matt 
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