[cisco-voip] Conference with remote resource using G.729

[Robin H]

HI Ryan,

Thanks it works. Can I confirm with you on following:

- CallManager MTP (software) only support G711
- Hardware CFB support G729 and G711
- Software CFB only support G711

THANKS,
Robin


OK. thanks. I wil try that tomorrow and update you again.

On 5/16/06, Ryan Ratliff <rratliff at cisco.com> wrote:
> 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