24 May
2017
24 May
'17
9:42 a.m.
Hello All,
I’m trying to interop with a provider whose ACK during an inbound call seems to be
misrouted.
During the INVITE, OK, ACK handshake, my understanding (which matches the examples in RFC
3665) is that the R-URI in the ACK should be the Contact specified in the 200 OK.
I have also found multiple discussions that imply that this is necessary. However, I
can’t find a convincing normative reference for this... Is there a reference (ideally in
RFC 3261) that makes this clear?
Cheers,
Dave.