From: "Jackson, James" <[EMAIL PROTECTED]> The assumption is that the transfer target rejects the initial early dialog on receiving the REFER. The 180 and 487 would be sent in the NOTIFY associated with the REFER.
I don't see what you're describing here. If the INVITE/Replaces were to complete, you would have the previous early dialog ended (probably with 487). And the INVITE/Replaces would presumably get a 200 quickly. But the phone is still ringing. To what "other end" UA does it send provisional and final responses in regard to its status? I'm not trying to pick on any vendors here but take a look at what is called "attended transfer with early completion" on this link: http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_ guide09186a0080110c01.html >From the looks of Figure 4 on that page, the INVITE/Replaces does *not* complete immediately, but rather its provisional and final responses are the continuation of the previous early dialog at the transer target. I wonder how well that would interoperate. Previously, INVITE/Replaces completes quickly, but there is no reason that it *must*, and transferee phones should be able to cope with long transaction times for INVITE/Replaces. Dale _______________________________________________ Sip mailing list https://www1.ietf.org/mailman/listinfo/sip This list is for NEW development of the core SIP Protocol Use [EMAIL PROTECTED] for questions on current sip Use [EMAIL PROTECTED] for new developments on the application of sip
