[pjsip] Question about DTMF's

Dave spawnage at gmail.com
Thu May 29 04:55:10 EDT 2008


Thanks!

RFC 2833 did the trick :)

Cheers
David


On Thu, May 29, 2008 at 10:22 AM, Benny Prijono <bennylp at pjsip.org> wrote:
> On Thu, May 29, 2008 at 8:48 AM, Dave <spawnage at gmail.com> wrote:
>> Hello,
>>
>> I'm working on a connection between a pjsip application and cisco
>> callmanager express.
>> I'm currently trying to get DTMF messages from the CCME to my
>> application but have so far had no success.
>>
>> Now as far as i understand it, pjsip supports detection of incoming
>> DTMF messages only via the SIP-Info method.
>
> And RFC 2833.
>
>> CCME prefers to use a
>> proprietary SIP-notify method, so I would guess the pjsip doesn't
>> support this?
>
> No.
>
>> Currently, during call setup, debug info from the CCME shows that the
>> chosen method of sending DTMF messages is in-band. The CCME indicates
>> it's preferred method is SIP-Notify, but pjsip tells it to use
>> in-band.
>>
>
> Hmm.. I guess what CCME calls in-band is actually RFC 2833?
>
>> My main question:
>> How can I change the prefered way of pjsip to SIP-Info, or Notifiy if
>> that happens to be supported?
>>
>
> We have no such thing as "preferred way" in pjsip. Incoming RFC 2833
> events or DTMF SIP INFO will be automatically accepted. And for
> sending, the application (or pjsua users) chooses between the two with
> explicit API/command. AFAIK SIP INFO has been deprecated?
>
> Cheers
>  Benny
>
>> Thanks in advance,
>> David
>>
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>
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