Hi All, I have some questions regarding the UPDATE request:
Q1: Is it a valid situation for UPDATE response (read response to UPDATE request) to come after the 2xx final response to the initial INVITE? Will it update the remote target of the dialog. A B INVITE |-------------------------------------->| 180 rel |<--------------------------------------| /Early dialog established/ PRACK |-------------------------------------->| 200 (PRACK) |<--------------------------------------| UPDATE |-------------------------------------->| 200 OK (INVITE) |<--------------------------------------| 200 OK (UPDATE) |<--------------------------------------| Q2: What is happening if this was non 2xx final response such as 408 or 481or maybe 491? This is very strange situation because 2xx to INVITE has already established the confirmed dialog, and 408 or 481 to UPDATE should tear down the dialog. 491 response should cause sending the UPDATE once more. Am I right? Q3: I understand that UPDATE shouldn't be used when confirmed dialog is established, but still , what is happening if the final response to reINVITE hasn't been received yet, is it valid to try to UPDATE the dialog? Q4: Q1 and Q2 in the case of reINVITE. Thanks very match in advance. Nina. -- Nina Garaca Software Development & Testing --- "ZESIUM mobile" d.o.o. Valentina Vodnika 8/9 21000 Novi Sad Serbia Tel: +381 (0)21 472 15 48 Fax: +381 (0)21 472 15 49 Mob: +381 (0)63 16 15 891 E-mail: [EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
