1) UAS can send again 401 for the first transaction if it has not receiveied ACK. 2) It can accept 2nd INVITE.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mohsen Soroushnejad Sent: Thursday, May 10, 2007 2:17 PM To: [email protected] Subject: [Sip-implementors] rfc 3261 question? Hi - What is the RFC 3261 statement w.r.t. the following scenario: UAC UAS ---- INVITE (1) ----> <--- 401 (1) ----- ---- ACK (1) -X ACK packet lost in transit ---- INVITE (2) ----> (with Auth. credentials) What should the UAS do with INVITE (2) before it receives the ACK for the 1st transaction? I'm assuming that INVITE (2) has incremented the CSeq, but it has the same Call-ID and From tag as the INVITE (1). I've heard two answers: 1) UAS sends 491 to UAC 2) UAS processes INVITE (2) Which one is correct? Thanks, Mohsen _______________________________________________ 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
