according to the RFC,reply like alice<----- 200OK with SDP media A, B, C, D, E ---- bob /* all are sendrecv */
alice------ ACK with SDP media A or B or C ----> bob /* all are sendrecv */ but I think alice should un hold the call by sending INVITE with Offer( sendrecv) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Richard Wu Sent: Monday, April 14, 2008 3:37 PM To: sip-implementors@lists.cs.columbia.edu Cc: Fu Siu Ming Claudio Subject: [Sip-implementors] RE-INVITE question 14.2 Hi All, In RFC 3264 chapter 14.2 "A UAS providing an offer in a 2xx (because the INVITE did not contain an offer) SHOULD construct the offer as if the UAS were making a brand new call, subject ....". Consider the following scenario: alice-----> INVITE with SDP media A, B, C ---> bob /* all are sendrecv alice-----> */ alice<----- 200OK with SDP media A, B, C, D, E ---- bob /* all are sendrecv */ alice------ ACK ----> bob Then alice hold bob alice-----> INVITE with SDP media A, B, C ---> bob /* all are sendonly alice-----> */ alice<----- 200OK with SDP media A, B, C, D, E ---- bob /* all are recvonly */ alice------ ACK ----> bob Afterwards, alice send a RE-INVITE with no SDP alice-----> INVITE with no SDP---> bob What should bob rely? Suppose bob support five medias A, B, C, D, and E. Thanks in advance. ichardR ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This message (including any attachments) is for the named addressee(s)'s use only. It may contain sensitive, confidential, private proprietary or legally privileged information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. Any use, disclosure, copying, or distribution of this message and/or any attachments is strictly prohibited. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
