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

[Tim Smith]

Hi Mark,

Yeah we don't have many options here in Australia at the moment.

I would say probably only 3 providers I would call tier 1

Yes on this one, no G729, either the trunk is G711a or G729 exclusively.
Although funnily enough I think they were advertising G729.

But, we are getting 2833 in a month or so. In the meantime, I think I am
going to put in IP IP GW on the sites local wan router, and have a manual
steering prefix if they want DTMF.

By the way, your acme posts here and on your site are really useful, thanks
for those!

Cheers,

Tim

On 20 September 2012 22:47, 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.
> >
> > _______________________________________________
> > cisco-voip mailing list
> > cisco-voip at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-voip
>
>
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