El Friday 18 July 2008 13:09:35 Attila Sipos escribió: > >>Hi, I've realized that Linksys SPA phones use the following way to set > >> anonyous caller: > > here you go mentioning manufacturers by name again.
Well, I was trying that model... next time I'll say: I've realized that XXXXX phone... :) > >>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. Yes, too much SHOULD in the RFC3261. :( > 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. Again 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. Ok, thanks for so documented response. Best regards. -- Iñaki Baz Castillo [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
