Hello, I am new to the list and relatively new to SIP as well. I have a question I hope someone can answer here. I have searched the SIP RFCs and drafts to no avail.
If a SIP party X performs a blind transfer of party X to party Y, and the SIP proxy sends a NOTIFY (100 Trying) to the Sip party X, followed by a re-INVITE with the same Call-ID prior to sending a NOTIFY (200 Ok), what should the SIP device X's response be to the extraneous re-INVITE? Since party X is on-hook at the time since this is a blind rather than an attended transfer, he could re-ring X's line (though there is no party calling, so this is confusing to the user), or he could ignore the re-INVITE since he is waiting for a NOTIFY 200 Ok state. Is there any guidance in the SIP RFCs/drafts for SIP User Agent behavior in this situation, or is it up to the individual UA to implement as desired? Many thanks in advance, Emily Smith DMS-10 Software Development Nortel [EMAIL PROTECTED] Office 919.992.7467 _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
