I met a problem when I study the SIP Spec. Can anyone give me his/her advice for that? Thanks a lot. The scenario is: 1. UA Y invited UA X. 2. UA X 200ed UA Y. 3. UA Y acked UA X. (SIP Session is established)
4. UA X re-invited UA Y. 5. UA Y 200ed UA X. 6. UA X acked UA Y. (It seems that UA Y doesn't get it because UA X receives retransmission of 200 in step 9) 7. UA X re-invited UA Y AGAIN (Is it valid?) 8. UA Y 400ed UA X. (Is it valid?) 9. UA X received retransmission of step 5. Q1: For UA X, we think step 7 is valid because the first re-invite transaction is already over, is that true? Q2: We are not very clear about step 8. For UA Y, the 2nd re-invite comes before it receives ack of 1st re-invite. What should UA Y do? Regards _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
