Exactly.

First three versions of the individual draft worked with multiple
contacts:
https://svn.resiprocate.org/rep/ietf-drafts/audet/draft-audet-sip-sips-g
uidelines-00.txt 
https://svn.resiprocate.org/rep/ietf-drafts/audet/draft-audet-sip-sips-g
uidelines-01.txt
https://svn.resiprocate.org/rep/ietf-drafts/audet/draft-audet-sip-sips-g
uidelines-02.txt

Starting from -03 (individual), it shifted to the current model.
https://svn.resiprocate.org/rep/ietf-drafts/audet/draft-audet-sip-sips-g
uidelines-03.txt

And again, with TCP and UDP today, we do NOT use explicit registration.

> -----Original Message-----
> From: Paul Kyzivat [mailto:[EMAIL PROTECTED] 
> Sent: Friday, April 13, 2007 06:42
> To: Hisham Khartabil
> Cc: Dean Willis; [EMAIL PROTECTED]; Audet, Francois (SC100:3055)
> Subject: Re: [Sip] SIPS question: How to prevent plaintext 
> requests from being delivered to a UA
> 
> Hisham,
> 
> I don't understand how you expect the registering of two 
> schemes to work. Suppose the phone needs to use outbound. Are 
> you suggesting that it needs to establish one outbound 
> connection for sips and a different one for sip? Why would 
> anyone want to incur that extra cost compared to simply 
> receiving both sip and sips calls over the same connection?

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