> -----Original Message-----
> From: Medhavi Bhatia [mailto:[EMAIL PROTECTED]]
> Sent: Monday, April 23, 2001 5:44 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [Sip-implementors] DTMFs
> 
> 
> You can use the INFO message.
> rfc 2976, and I think there is a draft detailing how to encode the
> INFO message.

No.

There has not been agreement to pursue DTMF transport in SIP messages. There
is no standards track activity around DTMF in SIP in either the sip or
sipping charters. Any solution based on INFO or other new messages is vendor
proprietary.

The standardized IETF mechanism for DTMF transport is rfc2833. The way to
use this to support applications is described in the URL Medhavi gave.

Thanks,
Jonathan R.

> 
> However I think that rfc 2833, is more preferable. See:
> http://search.ietf.org/internet-drafts/draft-rosenberg-sip-app
> -components-01
> .txt
> 
> 
> ----- Original Message -----
> From: "Martin Pr�fontaine" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, April 23, 2001 4:55 PM
> Subject: [Sip-implementors] DTMFs
> 
> 
> > Hi,
> >
> > How would you transmit DTMFs using SIP (Standard Way)
> >
> > Is there any way to avoid using the RTP stream to transmit DTMFs?
> >
> > Thanks
> >
> > Martin Pr�fontaine
> > Software Engineer
> >
> > Interstar Technologies Inc.
> > 5835 Verdun Avenue, 3rd Floor
> > Montr�al, Qu�bec
> > Canada H4H 1M1
> >
> > Tel.: 1 (514) 766-1668 (4457) (EST)
> > Fax: 1 (514) 766-1439
> > Email: [EMAIL PROTECTED]
> > Web: http://www.faxserver.com
> >
> >
> > _______________________________________________
> > Sip-implementors mailing list
> > [EMAIL PROTECTED]
> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
> >
> 
> _______________________________________________
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> 

---
Jonathan D. Rosenberg                       72 Eagle Rock Ave.
Chief Scientist                             First Floor
dynamicsoft                                 East Hanover, NJ 07936
[EMAIL PROTECTED]                     FAX:   (973) 952-5050
http://www.jdrosen.net                      PHONE: (973) 952-5000
http://www.dynamicsoft.com
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