[asterisk-users] Zap Codec

[Eric Wieling]

The PSTN only allows ulaw or alaw (depending on your location).  You 
CANNOT send calls in any other codec over a PSTN line.  Generally, if 
you want to use G729 then you must buy a G729 license (with a few 
exceptions).

Jeremy Mann wrote:
> But I want my polycom to attempt g729 on SIPPEER-SIPPEER calls, I only 
> want ulaw used when SIPPEER-ZAP is the case.
> 
>  
> 
> *From:* asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of *Darryl 
> Dunkin
> *Sent:* Monday, April 14, 2008 9:01 PM
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* Re: [asterisk-users] Zap Codec
> 
>  
> 
> This is SIP channel you need to limit. Forcing ulaw only, the Polycom 
> will fall back to ulaw.
> 
>  
> 
> Per peer, in your sip.conf:
> 
> disallow=all
> allow=ulaw
> 
>  
> 
> ------------------------------------------------------------------------
> 
> *From:* asterisk-users-bounces at lists.digium.com 
> [mailto:asterisk-users-bounces at lists.digium.com] *On Behalf Of *Jeremy Mann
> *Sent:* Monday, April 14, 2008 14:39
> *To:* Asterisk Users Mailing List - Non-Commercial Discussion
> *Subject:* [asterisk-users] Zap Codec
> 
> Is there a way to force Zap channels to only use ulaw, and not even 
> attempt g729 negotiation?
> 
>  
> 
> My polycom 550 has G729,ulaw as priority, the Zap always fails b/c I’m 
> not licensed for the codec on the asterisk box.
> 
>  
> 
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