I believe the intention was that target was mandatory, but not cause. I don't believe having cause but not target would make any sense.
> -----Original Message----- > From: DRAGE, Keith (Keith) [mailto:[email protected]] > Sent: Wednesday, April 08, 2009 09:07 > To: [email protected] > Cc: Cullen Jennings; Audet, Francois (SC100:3055); Elwell, John > Subject: Clarification on RFC 4458: SIP URIs for Applications > such as Voicemail and Interactive Voice Response (IVR) > > RFC 4458 defines two SIP URI parameters. > > I can find no specific language in the document that > indicates whether these two URI parameters can be used > independently of each other, or whether there is an > expectation that both URI parameters should only exist in the > presence of each other. Specifically does an implementation > that only includes the "cause" SIP URI parameter and not the > "target" sip URI parameter conform to this specification? > > All the text and examples seem to carry the implication that > where one exists, the other one will also. > > Could one of the authors or some other interested party > clarify what they believe the intention is? > > regards > > Keith > _______________________________________________ Sip mailing list https://www.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [email protected] for questions on current sip Use [email protected] for new developments on the application of sip
