Dean,

I don't think I agree.

In the non-anonymous case, the asserter will attest that the source is 
entitled to claim the address. AFAIK nothing else is implied. But assume 
it will provide more - for instance the name, address, and SS# of the 
person entitled to the address.

Now assume that the address is an "anonymous" address. The asserter will 
then be providing information about the anonymizer, not the entity that 
is being anonymized. Its entirely possible (likely) that the anonymizer 
won't maintain records that would give it the capability of reporting on 
the address being anonymized.

        Paul

Dean Willis wrote:
> On Feb 19, 2008, at 3:17 PM, Paul Kyzivat wrote:
> 
>> In this case there is no expectation that the anonymized address will 
>> be willing or able to report to anyone what the identity of its client 
>> was. In the absence of any such assurance, having sip identity is of 
>> no use.
> 
> 
> I disagree.
> 
> The presence of an Identity header declares that the  asserter of the 
> anonymized identity  of the address, will if suitably encouraged (as in 
> a court order), reveal the identity of the client.  If they aren't 
> willing to take the responsibility of having made an assertion of 
> identity on behalf of that client, then they shouldn't put an Identity 
> header in.
> 
> I might be more willing to accept a call from an anonymous party if I 
> knew that,  should said anonymous party be making a threat, my lawyer 
> can subpoena somebody and find the culprit.
> 
> -- 
> Dean
> 
> 
> 
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