I've seen no response to your postings so I'll say a few words. First, the I-D you reference below, like one I was involved with at the time, has expired from an IETF process basis. The mechanism (DTFM in INFO) hasn't been accepted as an approach for standardizing within the IETF (at least within the SIP-related working groups). Second, the signaled digits I-D you refer to below does discuss sending RFC 2833 tones in INFO and also using the SIP Events mechanism. However, if there's interest in the more general problem of key-based user indication transport in SIP then a current proposal is http://www.ietf.org/internet-drafts/draft-culpepper-sip-key-events-00.txt.; (The -01 version should appear soon in the archives.)
If you're interested in a standardized mechanism, I'd encourage your participation (if only posting some feedback) in discussing the various mechanisms on the SIPPING mail list (http://www1.ietf.org/mailman/listinfo/sipping). Regards, Bert What is the status of draft-choudhuri-sip-info-digit-00.txt ? Thanks, Eran. Eran Shen Intel Corporation Telecommunications and Embedded Group P.O Box 58, Migdal Tefen, Israel Tel: +972-4-9105020 <mailto:[EMAIL PROTECTED]> -----Original Message----- From: Shen, Eran [mailto:[EMAIL PROTECTED]] Sent: Sunday, March 03, 2002 1:18 AM To: [EMAIL PROTECTED] Subject: [Sip-implementors] Out of band DTMF Hi, I would like to know where can I find a description of the way to convey out of band DTMF using INFO method? In the INFO rfc2976 "- Carrying DTMF digits generated during a SIP session." is all I found. And In http://www.softarmor.com/sipping/drafts/draft-mahy-sipping-signaled-digits-0 0.txt Page 3: "This document proposes that the protocol translator send the audio/telephone-event MIME type defined in RFC2833 in the body of an INFO method to the target User Agent, for it to render. The INFO method means: here is some information relevant to the call. A valid way to handle information in this situation is to render that information. Under this proposal, a User Agent MUST NOT send signaled digits or telephone-events using the INFO method if the event was ever represented as a tone (as media). Only signals originated as pure signaling MAY generate an INFO method. Failure to heed this requirement will result in double-detection of digits/events. If INFO is used incorrectly by a pair of PSTN gateways (for example), the source gateway may detect a digit, send an INFO request which is lost, and retransmit that request. The target gateway would send the original in-band tone to the PSTN when the audio media arrives, later when the INFO arrives, the target gateway would render the same tone again." Does anyone know of other documents where it is mentioned? Thanks, Eran. Eran Shen Intel Corporation Telecommunications and Embedded Group P.O Box 58, Migdal Tefen, Israel Tel: +972-4-9105020 <mailto:[EMAIL PROTECTED]> _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
