CUCM will try to negotiate inband (RFC2833) and out of band. I don't believe you can edit length of tone or on/off times for RFC2833.
To use true inband, you need a universal transcoder. It tries to negotiate a few different methods such as Unsolicited Notify, KPML, and SIP Info (I believe receive but not send on this one). You can't hard set to use a certain out of band DTMF method. It should automatically negotiate. You'll have to check the SIP signaling. On Mon, Aug 28, 2017 at 1:28 PM, Joe Loiacono <jloia...@csc.com> wrote: > Having difficulties with a third-party conference phone losing DTMF > capability. > > Does anyone know where to find these settings in CUCM? > > In band or Out of band DTMF tones > Length of tone on and off time > Out of band DTMF payload type > > Thanks, > > Joe > _______________________________________________ > cisco-voip mailing list > cisco-voip@puck.nether.net > https://puck.nether.net/mailman/listinfo/cisco-voip > >
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