[cisco-voip] DTMF settings in CUCM

[Nick Britt]

Hi Joe,

Can I ask which version of CUCM you are using? there are some known issues
with DTMF in 10.5.2

On Mon, Aug 28, 2017 at 10:40 AM, Brian Meade <bmeade90 at vt.edu> wrote:

> 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 <jloiacon at 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
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>>
>>
>
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>


-- 
- Nick
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