[cisco-voip] iLBC Transcoder... FORCE ILBC for some calls???

[Jonathan Charles]

I tried 723 for the region and got fast busies for calls to the 6608....

On Wed, Apr 21, 2010 at 3:17 PM, Peter Slow <peter.slow at gmail.com> wrote:

> Ryan,
>  I had mentioned to him that configuring the phone to always use a
> TRP and then configuring the TRP to support the approriate codecs
> might do the trick, but havent tried it yet.  the other option was
> setting the region between the 6608 and the phone to 723 to force
> transcoder invocation, but that seemed messy.
>
> any comments on either solution?
>
> -Pete
>
> On Wed, Apr 21, 2010 at 2:15 PM, Ryan Ratliff <rratliff at cisco.com> wrote:
> > In order to force a codec you have to route the call through a device
> that
> > only supports said codec.  In your case both the 6608 and the phone
> support
> > g.729 so that is what CUCM is negotiating.   Since you can't disable
> g.729
> > support on the phone you would need to somehow route the call through and
> > intermediate device that only supports ilbc (for the phone leg) and then
> > engage a transcoder to convert the ilbc to g.711 going to the 6608.
> > Remember the Region setting is just the max bandwidth for calls.  Any
> codec
> > less than (or equal to) the max and supported by all parties will be
> > allowed.
> > -Ryan
> > On Apr 21, 2010, at 12:56 PM, Jonathan Charles wrote:
> >
> > Basically, the goal is to Force iLBC for all calls from the remote
> phones...
> > and invoke the transcoder regardless of codec support.
> >
> >
> > Jonathan
> >
> > On Wed, Apr 21, 2010 at 11:22 AM, Jonathan Charles <jonvoip at gmail.com>
> > wrote:
> >>
> >> OK, I have a 6608 and a 7965 remotely over a VPN.
> >>
> >> I have enabled an IOS Enhanced Xcoder... It is never invoked. The region
> >> says G.728/ILBC and it is set to lossy...
> >>
> >> And all calls are going out as G.729...
> >>
> >> The 6608 doesn't support ilbc, but the 65 does... I have enabled the
> >> service parameters:
> >>
> >> iLBC Codec Enabled: Enabled for all devices
> >> Default InterRegion Codec: G.728
> >>
> >> But still 729...
> >>
> >> The quality is horrible using 729... the customer is demanding ilbc
> (that
> >> is why they bought the 7965s and 62s....) but if the phone will always
> >> default to 729...
> >>
> >>
> >> How???
> >>
> >>
> >>
> >> Jonathan
> >
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