[asterisk-users] g729 and polycoms problem

[Alyed Tzompa]

		Not an expert at reading Polycom config files, but guess g729 and ulaw are both preference 1 isn't it?

hey... you have in your sip.conf configuration "canreinvite=no"...
think this may be a problem: since Asterisk will always stay in the
path of the RTPs, I think it might need to have the proper transcoder,
as it does not, then the error arises... at least that's what I think :)

set "canreinvite=yes" (or just comment it since that's the default) on both parties and try again.

Let me know if it works.

Alyed  

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Still having the same problem. i modified the sip.cfg in order to make
g729 the first choice:

voice.codecPref.G711A="3" voice.codecPref.G729AB="1"
voice.codecPref.IP_4000.G711Mu="1" voice.codecPref.IP_4000.G711A="2"
voice.codecPref.IP_4000.G729AB=""/>

Cheers,
Santiago

On 9/19/06, Alyed Tzompa  wrote:
>  Make sure the codec used by the Polycom will be only g729 via the phone's
> web interface, as far as I remember Polycom will try always to use ulaw or
> alaw first unless it is configured to use only or as first choice the g729
> codec.
>
> Alyed
>
>  ________________________________
> Return-Path:  Tue
> Sep 19 14:47:54 2006
> Received: from digium-69-16-138-164.phx1.puregig.net
> [69.16.138.164] by maila11.webcontrolcenter.com with SMTP;
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> Received: from digium-69-16-138-164.phx1.puregig.net
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>
> Hi, I'm experiencing some problems with polycom phones, asterisk and g729
> codec.
>
> As I understand, between polycom and polycom i can use g729 without
> license at all as long as I'm using codec_g729.so module (i'm using
> the Open Source Implementation (
> http://www.readytechnology.co.uk/open/ipp-codecs-g729-g723.1/
> )
> because it's pure pass-thru and there's no transcoding).
>
> My sip.conf has the following options:
>
> [general]
> disallow=all
> allow=g729
> allow=ulaw
>
>
> [voipuser]
> type=friend
> username=user
> host=dynamic
> callerid=user <202>
> mailbox=202 at default
> secret=gbvVf423
> canreinvite=no
> insecure=yes
> disallow=all
> allow=g729
>
>
> so i force the voipuser to use g729 as main codec. The problem comes
> when i try to connect to other polycom phone with the same config as
> voipuser. The CLI shows the following:
>
> Sep 19 18:37:38 NOTICE[8226]: chan_sip.c:3691 process_sdp: No compatible
> codecs!
>
> show modules doesnt show codec_g729.so but if i try to load it i get this:
>
> Unable to load module codec_g729.so
> Sep 19 18:39:16 WARNING[10688]: loader.c:305 __load_resource: Module
> 'codec_g729.so' already exists
>
>
> Anyone had this issue?
>
> If you need more information, feel fre to ask for it :)
>
>
> Thanks a lot!
>
> Santiago
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