From: Nick Matthews (matthn@gmail.com)
Date: Wed Oct 15 2008 - 17:29:12 ART
If you want to advertise all of the codecs to avoid transcoding, you don't
need dial peer 0 to do that. Just create a voice-class codec with all of
the preferred codecs, and put it on an incoming dial peer.
Nick
On Wed, Oct 15, 2008 at 4:15 PM, lalit gupta <lalit.tech@gmail.com> wrote:
> Hi Nick,
>
> this is not little note, this has cleared many things for me. Thanks for
> that.
>
> it means, suppose i have not got any incoming dial peer which matches any
> codec, then by default call will be matched by default dial peer 0 and it
> will have all the codec capabilities and then i might not need any
> transcoder/resource to convert that incoming codec.
>
> Please correct me if i m wrong.
>
> -lalit
>
>
>
>
> On Tue, Oct 14, 2008 at 6:34 PM, Nick Matthews <matthn@gmail.com> wrote:
>
>> CME by default doesn't actually only advertise g729. If you match an
>> incoming voip dial peer, and under that incoming dial peer you haven't set a
>> codec it will be g729.
>>
>> If however, you do not match an inbound voip dial peer, you will match
>> dial peer 0 which will actually advertise almost every codec possible.
>>
>>
>> Just a little note, hopefully you're matching an non-0 dial peer.
>>
>>
>> Nick
>>
>>
>> On Tue, Oct 14, 2008 at 11:03 AM, lalit gupta <lalit.tech@gmail.com>wrote:
>>
>>> Thanks KC and vikram,
>>>
>>> so if call is going through GK to CME , and on GK side codec is g711 and
>>> on
>>> CME side codec will be 729 by default. So will call be dropped without
>>> transcoder ?
>>>
>>> if not then will it be using CCM software trancoder to work ? Suppose i
>>> m
>>> not using any transcoder on CME.
>>>
>>> -Thanks ,
>>> lalit
>>>
>>> On Tue, Oct 14, 2008 at 8:54 AM, KC <kanwal.chawla@gmail.com> wrote:
>>>
>>> > Lalit
>>> >
>>> > CME is very specific about G729 codec. If you dont define any specific
>>> > codec, CME will reply with G729 codec only.
>>> >
>>> > On CME you can define to negotiate codec by :
>>> >
>>> > voice class codec 1
>>> > codec preferece 1 g729r8
>>> > codec preference 2 g711ulaw
>>> >
>>> > If your calls are going throgh gatekeeper, then on active call , run
>>> > command on Gatekeeper :
>>> >
>>> > sh gatekeeper calls
>>> >
>>> > It will show you the codec it is using.
>>> >
>>> > Thanks
>>> > KC
>>> > On Tue, Oct 14, 2008 at 12:43 AM, lalit gupta <lalit.tech@gmail.com
>>> >wrote:
>>> >
>>> >> Hi Experts,
>>> >>
>>> >> Suppose i have region HQ with g711 codec selected and then I have GK
>>> trunk
>>> >> which is the part of HQ region.
>>> >>
>>> >> Now when the call will be started from the CCM towards CME using H323
>>> ,
>>> >> which codec will be used. will it still be g711 over the WAN ?
>>> >>
>>> >> if yes then by which command i can verify this on GK OR on CME?
>>> >>
>>> >> 2) if i dont select any codec on GK trunk then which codec will be
>>> used
>>> >> by
>>> >> default over the WAN ?
>>> >>
>>> >>
>>> >> Thanks,
>>> >> Lalit
>>> >>
>>> >>
>>> >> Blogs and organic groups at http://www.ccie.net
>>> >>
>>> >>
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>>> >>
>>> >>
>>> >>
>>> >>
>>> >
>>> >
>>> > --
>>> > Kanwal Chawla
>>> > 408-881-3209
>>>
>>>
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