[cisco-voip] H.323 DTMF to SIP 2833

[Mark Holloway]

John is correct, if you're using Alphanumeric on H323 you should be able to use SIP INFO without the need of an MTP. The question is what's on the other end of the SIP Trunk, and will they support SIP INFO?

DTMF interworking between SIP and H.323 in the signaling plane, using the Alphanumeric method
of UserInputIndication


On Jul 16, 2013, at 1:29 PM, Divin John (dijohn) <dijohn at cisco.com> wrote:

> CUCM on the H323 leg doesn't support rfc2833 (rtp-nte). 
> So, to stop CUCM from invoking an MTP, the SIP side should support Out of band (notify maybe)
> 
> Regards,
> Divin
> 
> From: Nate VanMaren <VanMarenNP at ldschurch.org>
> Date: Tuesday, 11 June 2013 1:26 AM
> To: "cisco-voip at puck.nether.net" <cisco-voip at puck.nether.net>
> Subject: [cisco-voip] H.323 DTMF to SIP 2833
> 
>  
>  
> What H.323 DTMF method can I use on a H.323 dial-peer to CUCM that will not invoke an MTP when the outbound side of CUCM is a SIP Trunk that is configured to use 2833.
>  
> I am currently using h245-alphanumeric, which seems to be invoking an MTP.
>  
> Thanks,
> -Nate
> 
> 
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