[cisco-voip] Conference with remote resource using G.729
Ryan Ratliff
rratliff at cisco.com
Tue May 16 09:33:31 EDT 2006
Sorry neglected your last question. Assuming a true hardware
transcoder you would configure the region as hq for the device. That
way devices in the same region would use g.711 and devices in wan-
connected regions would use g.729 (or whatever codec you have
configured).
-Ryan
On May 16, 2006, at 7:11 AM, Robin H wrote:
Hi Ryan,
There is a hardware MTP in hq. Can I use it to do transcoding so that
when hq phone1 initiate the conference and then invite site1 phone,
site1 phone will still use G729 codec instead of G.711? If yes, what
is the region that I should use for the MTP in hq.
thanks,
Robin
On 5/16/06, Ryan Ratliff <rratliff at cisco.com> wrote:
> The CM software CFB only supports g.711. If your conference is
> actually being established at g.711 then somebody has most likely
> placed your CFBs in a region that is set to do g.711 to all other
> regions. Otherwise you would have never been able to get the
> conference established.
>
> Your options are a transcoder or hardware conference bridge.
>
> -Ryan
>
> On May 15, 2006, at 11:48 AM, Robin H wrote:
>
> I have CallManager server at hq site and a WAN/Voice router in branch
> office (site1). Site1 phones are using conference and transcoding
> resource from CallManager. When I made a call from hq to Site1 (it
> uses G729 for VoIP over WAN) and then initiate conference from hq
> phone to outside, the conference can be established but it uses G711
> for both hq and site1 phone. Is there a way I can force the site1
> phone to use G729 even when in conference to save WAN bandwidth? I
> read about transcoding feature is to save WAN bandwidth. In this case
> How can I use it for site1 phones? Thanks
>
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