Moveover, even RTP is sent after ACK, it might/probably arrive after RTP, since proxy in the middle might add Record-Route itself, So ACK need to traverses through proxy whereas RTP does not.
-Rockson -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of I?aki Baz Castillo Sent: Saturday, September 06, 2008 10:41 PM To: [email protected] Subject: Re: [Sip-implementors] When to open RTP listen port El Sábado, 6 de Septiembre de 2008, Elison Niven escribió: > Hi, > > I am facing a problem that when I send a 200 OK, a remote UA > immediately starts sending RTP after sending the ACK before my device > has yet managed to opened that port. > > The result is that my device sends an ICMP for the first two received > RTP packets. > > Is this behavior normal or should I not wait for the ACK but open the > RTP listen port as soon as I send the 200 OK? Just one comment more: Note that the UAC has no way to know when exactly the ACK arrives to the UAS, so it makes no sense that the UAC should wait "some" time. -- Iñaki Baz Castillo _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
