So in other words, if I have G729 enabled on the phones, I must get G729 licenses to use Zap channels. Otherwise I have to use ULAW for everything?
I fail to understand why it'd be difficult to do codec negotiation on SIP-ZAP calls, Zap sends that it only supports ulaw, if the phone doesn't then the call is cancelled or forwarded to logic to translate. I realize G729 is fairly cheap, but it's useless server overhead when the phone supports the codec it needs natively. Is there any dialplan logic that can coerce the transaction to be ulaw only? Setting something in the SIP header perhaps? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Wieling Sent: Tuesday, April 15, 2008 8:05 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [asterisk-users] Zap Codec 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:* [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] *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:* [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] *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. > > > > ------------------------------------------------------------------------ > > This e-mail, facsimile, or letter and any files or attachments > transmitted with it contains information that is confidential and > privileged. 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