> What if such equipment (e.g. Cisco gateway) gets INVITE without SDP offer? > This means they have to send 200 (Ok) with SDP Offer and get the SDP Answer > in the ACK and the problem will happen again. ... > Anyway to try to avoid this: Try to always be the SDP answerer and not the > SDP offerer. Meaning always send INVITE with no SDP and answer on ACK. > > Thanks, > > Eran.
Oops. Sorry, I forgot about this case -- thanks for pointing it out. It's still not a complete solution, though: now it puts the pressure on the UAS. *Somebody* has to make an offer, and for maximal compatibility it should list as many codecs as it knows about; yet it can't be sure that the other end will pick only one, because SDP allows it to pick several. Nick -- Nick Hollinghurst [EMAIL PROTECTED] Research Engineer Phone: +44 1223 343364 AT&T Laboratories, Cambridge, England Fax: +44 1223 313542 _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
