Hi All: This is all based on https://tools.ietf.org/html/rfc3264#section-8
First it states: *We refer to the last SDP provided as the "previous SDP".* This clearly states last SDP sent , not the last SDP accepted. Then., later it states: *When issuing an offer that modifies the session, the "o=" line of the new SDP MUST be identical to that in the previous SDP, except that the version in the origin field MUST increment by one from the previous SDP.* So, based on this the version should be +1 of the version in the last sent SDP, i.e. 3. Regards, _____________ Roman Shpount _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
