[asterisk-users] Zap Codec

Jeremy Mann jmann at txhmg.com
Tue Apr 15 10:24:07 CDT 2008


I guess that's my frustration, I don't want it g729, I want it ulaw, I just wish Zap did codec negotiation from the client.  It'd be a nice option instead of automatically trying to translate if it's not ulaw.  Could save some processor overhead(obviously at the expense of bandwidth).

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Eric Wieling
Sent: Tuesday, April 15, 2008 10:15 AM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Zap Codec

If you want to get a G729 call to go via Zap you must purchase a G729
license.  No amount of discussion is going to change that.

Jeremy Mann wrote:
> Sadly you are correct:
>
>
>     -- Executing [8173104999 at from-sip:4] Set("SIP/156-083514c0", "_SIP_CODEC=ulaw") in new stack
>     -- Executing [8173104999 at from-sip:5] NoOp("SIP/156-083514c0", "4") in new stack
>     -- Executing [8173104999 at from-sip:6] NoOp("SIP/156-083514c0", """) in new stack
>     -- Executing [8173104999 at from-sip:7] Dial("SIP/156-083514c0", "") in new stack
> [Apr 15 09:51:25] WARNING[17434]: channel.c:3265 ast_request: No translator path exists for channel type Zap (native 76) to 256
> [Apr 15 09:51:25] WARNING[17434]: app_dial.c:1191 dial_exec_full: Unable to create channel of type 'Zap' (cause 58 - Bearer capability not available)
>   == Everyone is busy/congested at this time (1:0/0/1)
>     -- Executing [8173104999 at from-sip:8] Hangup("SIP/156-083514c0", "") in new stack
>
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Eric Wieling
> Sent: Tuesday, April 15, 2008 9:43 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Zap Codec
>
> That would work just spiffy if you are calling another SIP device, but
> by the time the call gets to that point in the dialplan the codec of the
> originating device has already been chosen and set in stone.
>
> Tilghman Lesher wrote:
>> On Tuesday 15 April 2008 07:40:47 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.
>> Set(_SIP_CODEC=ulaw)
>> Dial(Zap/g0/...)
>>
>
> --
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> T-1, PRI, Frame Relay, Linux, and network design.  Based near
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--
Consulting for Asterisk, Polycom, Sangoma, Digium, Cisco, LAN, WAN, QoS,
T-1, PRI, Frame Relay, Linux, and network design.  Based near
Birmingham, AL.  Now accepting clients worldwide.

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