Subject: RE: [Sip] draft-ietf-sip-asserted-identity-00

From: "Drage, Keith (Keith)" <[email-masked]>
Date: Fri, 31 May 2002 11:08:11 +0100

The term "hint" was an attempt to get away from the impression that the user asserted the identity and the network "screened" it to use the much abused ISDN term.

My view is that the content of the asserted-identity is entirely a policy matter of the trusted network. How the trusted network therefore takes the "hint" is entirely up to the policy of the network. It must not be assumed by any reader that the  function is just screening, i.e. pass on the value or replace it by a new value.

For example, if the user provides a tel-url, and the trusted network knows of the relationship between that tel-url and a one of a number of sip-urls that it can assert, then it would be perfectly appropriate to assert the sip-url if that is what the network policy requires.

I have no problem including a network policy statement within the spec(t) as regards how the hint is handled, as to provide adequate hints the UA needs to have some knowledge of this, but I will object if anybody attempts to describe it as a "screening" function.

Keith

> -----Original Message-----
> From: Juha Heinanen [mailto:[email-masked]]
> Sent: 28 May 2002 08:23
> To: Cullen Jennings
> Cc: [email-masked]
> Subject: [Sip] draft-ietf-sip-asserted-identity-00
> 
> 
> once again:
> 
> the term "hint" is not a good one.  if user adds the a-i, then the
> network MUST respect it or reject the request.  the network MUST not
> override the a-i and pick one of the identities on its own.  for
> example, the user may have misspelled the its uri in the a-i.
> 
> also, the text should say that in case from is anonymous the user MUST
> insert the a-i header if it has multiple identities, because otherwise
> the network cannot know which identity the user wants to use.
> 
> finally, for backwards compatibility, if from is not anonymous and the
> user has multiple identities, then from uri can serve as the 
> purpose of
> a-i.
> 
> -- juha
> 
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