Correct, CUBE would be capable of doing G711-inband to G711 (or another codec)-out of band.<br><br>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.<br>
<br>-nick<br><br><div class="gmail_quote">On Thu, Sep 20, 2012 at 8:47 AM, Mark Holloway <span dir="ltr"><<a href="mailto:mh@markholloway.com" target="_blank">mh@markholloway.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Interesting, so they don't support G729 either?<br>
<div><div class="h5"><br>
<br>
On Sep 17, 2012, at 11:06 PM, Tim Smith wrote:<br>
<br>
> Hi Guys,<br>
><br>
> I have a bit of an integration problem here.<br>
><br>
> Our SIP provider does not currently support RFC2833 DTMF.<br>
> Instead they use only in-band audio tones.<br>
><br>
> We are running an Acme Packet SBC virtual edition which does not have DSPs and cannot convert the RFC2833 to audio tones.<br>
> Inbound DTMF from audio to RFC2833 works fine with an MTP.<br>
><br>
> Is there any way with CUCM 8.6 and an IOS transcoder (no CUBE or IPIPGW) that we could do this conversion?<br>
> We did try G729 to G711 transcoding, and it did not work.<br>
> I'm assuming CUBE works because it terminates both legs of the call and is aware of what DTMF is supported on both side.<br>
><br>
> 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.<br>
> I think we are out of luck, but thought I would ask.<br>
><br>
> Cheers,<br>
><br>
> Tim.<br>
><br>
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