Re: [Enum] requesting reviewers for draft-ietf-enum-xmpp..
Dale.Worley@comcast.net Fri, 19 January 2007 17:56 UTC
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Date: Fri, 19 Jan 2007 12:56:41 -0500
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From: Dale.Worley@comcast.net
In-reply-to: <45948D80.2010309@e164.org> (duane@e164.org)
Subject: Re: [Enum] requesting reviewers for draft-ietf-enum-xmpp..
References: <456C52F5.20203@enum.at> <456C9D3C.6040104@e164.org> <20061128225646.GB26860@nic.at> <456CD852.1010303@e164.org> <456DB8A8.5000200@enum.at> <237A2882-907D-4BCA-8FDF-85ACE781FAEF@insensate.co.uk> <456E7B25.6010701@e164.org> <45948D80.2010309@e164.org>
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From: Duane <duane@e164.org> I've had a re-think on this, at least to a limited extent, take for example jingle/xmpp integration into Asterisk/FreeSwitch etc, asterisk obviously can't text message (unless you wanted to go into text to speech/speech to text), and a client like gaim can't handle voice, so I guess this is where listing type of services available in DNS comes in so clients don't need to handshake to indicate what they can accept. Although I guess the down side to not listing is of course lagged initial setup, but would this be detrimental? Actually, I think this is not the problem it appears to be. Consider if I've registered my SIP AOR in the ENUM database for my E.164 number. And consider that that AOR routes to two UAs: one is my desk phone, which can handle audio media, and one is my IM client, which can handle (whatever the SIP IM conversation media name is). If someone attempts to call me with an audio device, it will send an INVITE to the AOR, and the proxy will fork it to both of my UAs. But the SDP negotiation with the IM client will fail becuase there's no common media type, whereas the SDP negotiation with the phone will progress to an early dialog and ring my phone. The reverse happens if someone attempts to connect to my E.164 number using a SIMPLE IM client. The reason this works is that although, as you say, this requires clients "to handshake to indicate what they can accept", SIP *already* does the handshaking to determine which UA can accept what. (Asterisk, perhaps, cannot handle text messaging, but that would be because Asterisk isn't a real SIP proxy. Whereas sipX, SER, etc. can handle text messaging transparently.) Dale _______________________________________________ enum mailing list enum@ietf.org https://www1.ietf.org/mailman/listinfo/enum
- [Enum] requesting reviewers for draft-ietf-enum-x… Alexander Mayrhofer
- Re: [Enum] requesting reviewers for draft-ietf-en… Niall O'Reilly
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Otmar Lendl
- Re: [Enum] requesting reviewers for draft-ietf-en… lconroy
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Alexander Mayrhofer
- Re: [Enum] requesting reviewers for draft-ietf-en… Alexander Mayrhofer
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Stastny Richard
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… lconroy
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- RE: [Enum] requesting reviewers for draft-ietf-en… Stastny Richard
- RE: [Enum] requesting reviewers for draft-ietf-en… Bernie Hoeneisen
- Re: [Enum] requesting reviewers for draft-ietf-en… Stastny Richard
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Dale.Worley
- Re: [Enum] requesting reviewers for draft-ietf-en… Duane
- Re: [Enum] requesting reviewers for draft-ietf-en… Dale.Worley