> In case an Offer modification is issued after a previous > modification was rejected (e.g. re-INVITE answered with > 488), should SDP version number increase by 1 wrt the > previous Offer? Or should it increase by 1 wrt the SDP > for which the Offer/Answer model was closed before the > first re-INVITE?
>From an Offer/Answer perspective, either would likely work. However from an >RFC 4566 perspective, it is incorrect to use the same origin line for a >different SDP. Thus assuming that the SDP is different from both the >successful and subsequent unsuccessful offer/answer negotiation, the SDP >origin line version number would be higher than both. And for completeness... since the UAS might not see all the prior SDP versions, it should allow the SDP version to increase by more than 1. _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
