[cisco-voip] Transcoder config

[Selt9]

you also need HW xcode when you want to make conference call between LAN users and WAN users. LAN users come with g711 and WAN with g729... so you need xcode to mix this in one voice stream...
  u can use PVDMs on 2800/3800 for this...

"Fedorov, Konstantin" <kfedor at amt.ru> wrote:
  Hi,

IP phones support g711 and g729 codecs, so the can utilize 
both codecs depending on the region settings, for exam 
inside region 711, between regions 729. So transcoding not involved in 
the calls between regions.

Where we need transcoding. For example in the main side you have CRS 
Which couldn't use g729 codec, but some calls are made from g729 region
to it. This is primary use of hw transcoding.

-----------------------
Sincerely Yours,
Konstantin Fedorov

-----Original Message-----
From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Bob A. Bowie
Sent: Tuesday, August 22, 2006 6:21 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Transcoder config

I have a CCM 4.1.3 install on my lan/wan. All wan site are configured
in 
the CCM as g729 codecs.
I am wondering what use is the transcoder config in the call manager
for? 
Also, where is the transcoding taking place
on the CM when there are 711 and 729 phones? Is there a limitation
where I 
need to look at a hardware transcoder?
What is the typicla situations where a hw transcoder is needed?

Thanks
bob


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