[cisco-nas] Problem with VoIP codes on 2600

[Aljaz Tomaz ITWEG]

Hi Clayton,
Thanks for you valuable information (it helped). From my perspective it seem
that 2600 accepts on POTS dial-peer any available codec, it is only possible
to configure codec preferences on VOIP dial-peer. Are there any
possibilities to limit available codecs on POTS dial-peer (just G.729).

Best regards, 
Tomaz

-----Original Message-----
From: Clayton Kossmeyer [mailto:ckossmey at cisco.com]
Sent: Wednesday, August 13, 2003 3:39 PM
To: Aljaz Tomaz ITWEG
Cc: 'cisco-nas at puck.nether.net'
Subject: Re: [cisco-nas] Problem with VoIP codes on 2600



Hi Tomaz -

It sounds like what you want to do is configure "voice-class codec" to
create a list of codecs you want to support on the VoIP dial-peer
Also, if this is using an NM-HDV, you can configure the codec
complexity for the module to be either "medium" or "high".

Configuring for high complexity will cause the router to use g729; if
configured for medium complexity it will use g729a.  You can configure
the HDV module like this:

voice-card <slot>
 codec complexity [medium | high]

Here's a sample codec-class configuration:

voice-class codec 1
 codec preference 1 g729r8
 codec preference 2 g711ulaw

then, apply it to the dial-peer:

dial-peer voice <x> voip
 voice-class codec 1

Regards,

Clay

On Wed, Aug 13, 2003 at 08:13:38AM +0200, Aljaz Tomaz ITWEG wrote:
> Hi!
> We have equipment that we test interworking with Cisco 2600. We have
> following problem with G.729.
> When 2600 is receiving the calls from other box over g729A everything's
work
> fine.
> When Cisco initiate the call it uses codec g729 without annex A. Receiving
> site do not support this codec so it recommend g.729A or g.711a. Cisco
> decided to use g.711a. Why???
> How can I influence on POTS dial-peer to use just one (or more) codec(s),
> based on preference.
> 
> Kind regards,
> Tomaz
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