1. Discussion of using INFO for sending DTMF digits has been discussed ad nauseum. The answer is "don't do it".
2. I don't think anyone planned on sending VoiceXML in the body of a SIP message. They are too big, and it essentially breaks VoiceXML semantics (VoiceXML assumes http). 3. Media server vendors *do* use INFO for simple IVR operations. That also has been discussed ad nauseum. It works, follows the semantics for INFO, and, as Bert points out, is interoperable only if standards are followed. There is not a standard in the IETF (yet). However, there is a standard in the ISC. See <http://www.softswitch.org>. Vendors that follow that standard do interoperate. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Bert Culpepper Sent: Wednesday, July 24, 2002 2:08 PM To: Aditya Cc: [EMAIL PROTECTED] Subject: Re: [Sip-implementors] Sip INFO method I believe it should be noted that the two examples below are not described in any IETF RFC or I-D (that I'm aware of). And SIP user agents that do these things have little (if any) chance of operating with other user agents (wrt the information carried in INFOs). Regards, Bert Aditya wrote: > INFO is useful when interacting with a SIP > media server (IVR). > > 1. > Opeartions like - Playing Message/Recording Messages > etc can be done with INFO - few vendors use VoiceXML > in the body of INFO method to send/receive relevant > info (Message file location, mode to play announcement > in etc). > > 2. > INFO is used to pass dtmf digits collected. > One way it is done is to pass the digits collected in > the body and change the Content-Type to indicate the > same. > > -AD > > --- Bert Culpepper <[EMAIL PROTECTED]> wrote: > >>The I-D is now a RFC, see >>http://www.ietf.org/rfc/rfc2976.txt?number=2976 >> >>As far as standardized uses for INFO, The only use >>I'm aware of is >>described in section 4.6 of >> >> > http://www.ietf.org/internet-drafts/draft-ietf-sipping-isup-04.txt > >>Regards, >>Bert >> >> >>Jack W. Lix wrote: >> >> >>>Hi, >>> >>>I have been reviewing the SIP INFO method. It >>> >>provides a generic way to >> >>>send additional information to the peer. This >>> >>information is of little use >> >>>unless the far end is expecting it and can >>> >>interpret it. >> >>>So, is anyone using this method and, if so, for >>> >>what information? >> >>>A bit of research shows that there is an draft >>> >>describing how to send ISUP >> >>>messages using the INFO method. More research >>> >>shows that I cant even find >> >>>the SIP INFO draft. Has this expired or am I just >>> >>blind? >> >>>Any status of the INFO method and how it's used >>> >>would be appreciated. >> >>>Thanks, >>> >>>Jack W. Lix >>>[EMAIL PROTECTED] >>>Wind River Systems >>> >>> >>>_______________________________________________ >>>Sip-implementors mailing list >>>[EMAIL PROTECTED] >>> >>> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > >>> >> >>_______________________________________________ >>Sip-implementors mailing list >>[EMAIL PROTECTED] >> >> > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > > ===== > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Vision without action is DAYDREAM, > Action without vision is NIGHTMARE. > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > __________________________________________________ > Do You Yahoo!? > Yahoo! Health - Feel better, live better > http://health.yahoo.com > _______________________________________________ > Sip-implementors mailing list > [EMAIL PROTECTED] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > > _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
