Hi Paul, The draft document talks about procedures to check operational status of SIP elements which support OPTIONS.
In network, there might be some SIP elements which do not support OPTIONS and they will respond appropriately with 405 (Method Not Allowed) to OPTIONS ping, proving that they are operational and can process further requests. So I think there should not be any limitation that remote end point MUST support OPTIONS in order to check the operational status. In case remote end point does not support OPTIONS, this should not bar the originating sip element to send further requests. Regards Sameer Sawhney Extract: To comply with procedures described in this document, all SIP entities, including SIP user agents and proxy servers, MUST support the OPTIONS message when received outside of a dialog in accordance with this memo. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Paul E. Jones Sent: Wednesday, August 25, 2010 9:36 PM To: 'mustafa rifaee'; [email protected] Cc: Gonzalo Salgueiro Subject: Re: [Sip-implementors] Using SIP OPTIONS Message with IMS Mustafa, Not specific to IMS, there is a general need to query for operational status. Unfortunately, we're finding every variant of SIP (or even products targeted for the same environment) use OPTIONS to query for operational status, but they all do it differently. What we're trying to do is write a document or two that defines something everybody can live with. Here's the draft we currently have: http://tools.ietf.org/html/draft-jones-sip-options-ping Marius is also working on text for in-dialog OPTIONS and, unfortunately, I've not had a moment to review what was produced. Paul > -----Original Message----- > From: [email protected] [mailto:sip- > [email protected]] On Behalf Of mustafa rifaee > Sent: Wednesday, August 25, 2010 11:17 AM > To: [email protected] > Subject: [Sip-implementors] Using SIP OPTIONS Message with IMS > > Hello all; > i would ask you about the draft of Using OPTIONS to Query for Operational > Status in SIP. > Can we use OPTIONS message with IMS to Query for Operational Status in > SIP? > > Please Help me; > Thanks > Mustafa > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
