Hello,

we had a discussion about handling of retransmitted INVITE after the UAS 
was sending a 200 OK but did not received an ACK. The transaction layer 
will open a new INVITE server transaction because the layer has no 
information about the first initial INVITE. In the UAS core it is 
possible to recognizing the INVITE as a retransmission. But what should 
the UAS core do? I read section 13 and 17 but I found nothing.

Another discussion was going about that a retransmitted INVITE could be 
slower as an ACK because the ACK is send direct. Our client will 
complained about the CSeq number that is too low and the trouble is two 
INVITE (initial + retransmitted) which are the same but two responses 
(200 and 500). What can I do?

Thank you for your help!

Markus Hofmann
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