>>Hi, I've realized that Linksys SPA phones use the following way to set
>>anonyous caller:
here you go mentioning manufacturers by name again.
>>Is the first way really RFC compliant? which RFC?
The use of "Anonymous" <sip:[EMAIL PROTECTED]> is ok
but it maybe it doesn't follow the SHOULD of RFC3261.
RFC3261 says:
The From header field allows for a display name. A UAC SHOULD use
the display name "Anonymous", along with a syntactically correct, but
otherwise meaningless URI (like sip:[EMAIL PROTECTED]), if the
identity of the client is to remain hidden.
Is "mysip.domain.org" meaningless? Maybe not. But it's only a SHOULD.
RFC323 recommends a format like this:
From: "Anonymous" <sip:[EMAIL PROTECTED]>;tag=1928301774
But even in RFC3323, the use of anonymous.invalid is only a SHOULD.
And RFC 5079 says using just "Anonymous" is ok but a poor choice:
A
request SHOULD be considered anonymous when the identity of the
originator of the request has been explicitly withheld by the
originator. This occurs in any one of the following cases:
o The From header field contains a URI within the anonymous.invalid
domain.
o The From header field contains a display name whose value is
either 'Anonymous' or 'anonymous'. Note that display names make a
poor choice for indicating anonymity, since they are meant to be
consumed by humans, not automata. Thus, language variations and
even misspelling can cause an automaton to miss a hint in the
display name. Despite these problems, a check on the display name
is included here because RFC 3261 explicitly calls out the usage
of the display name as a way to declare anonymity.
[the list goes on to include 2 other cases]
So I'd say ""Anonymous" <sip:[EMAIL PROTECTED]>" is ok
but could be better.
Regards,
Attila
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Iñaki Baz
Castillo
Sent: 18 July 2008 11:01
To: [email protected]
Subject: [Sip-implementors] Setting anonymous From
Hi, I've realized that Linksys SPA phones use the following way to set anonyous
caller:
From: "Anonymous" <sip:[EMAIL PROTECTED]>
This is, it doesn't hide the From username and domain. How correct is it?
I expected that it could use P-Prefferred-Identity with:
From: "Anonymous" <sip:[EMAIL PROTECTED]>
P-Prefferred-Identity with: "IBC" <sip:[EMAIL PROTECTED]>
Privacy: id
Is the first way really RFC compliant? which RFC?
Thanks a lot.
--
Iñaki Baz Castillo
[EMAIL PROTECTED]
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