[cisco-voip] CUCM SIP trunk and Acme VM edition

[Nick Matthews]

Correct, CUBE would be capable of doing G711-inband to G711 (or another
codec)-out of band.

The device that handles the outside leg must be able to do this. I don't
think CUCM will do the inband detection if you simply omit any DTMF
negotiation.

-nick

On Thu, Sep 20, 2012 at 8:47 AM, Mark Holloway <mh at markholloway.com> wrote:

> Interesting, so they don't support G729 either?
>
>
> On Sep 17, 2012, at 11:06 PM, Tim Smith wrote:
>
> > Hi Guys,
> >
> > I have a bit of an integration problem here.
> >
> > Our SIP provider does not currently support RFC2833 DTMF.
> > Instead they use only in-band audio tones.
> >
> > We are running an Acme Packet SBC virtual edition which does not have
> DSPs and cannot convert the RFC2833 to audio tones.
> > Inbound DTMF from audio to RFC2833 works fine with an MTP.
> >
> > Is there any way with CUCM 8.6 and an IOS transcoder (no CUBE or IPIPGW)
> that we could do this conversion?
> > We did try G729 to G711 transcoding, and it did not work.
> > I'm assuming CUBE works because it terminates both legs of the call and
> is aware of what DTMF is supported on both side.
> >
> > We will have RFC2833 from the provider in a month or so, so that will be
> the best fix. Just wondering if there is any interim fix.
> > I think we are out of luck, but thought I would ask.
> >
> > Cheers,
> >
> > Tim.
> >
> > _______________________________________________
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> > cisco-voip at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
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