Hi, When a INVITE is received, TU is going to create trasaction. If INVITE matches existing trasaction it is considered as re-invite. In your case, for TU, INVITE trasaction is still active( it is waiting for ACK). so it is going to treat it as re-invite and ignore it. If suppose it had received ACK for 200 OK before retrasmitteed INVITE arrives, TU is going to ignore it because CSeq does not follow the rules.
Thanks, Mahipati Deshpande --- Richard Wu <[EMAIL PROTECTED]> wrote: > > Hi all, > Supporse there are a UAC and a UAS. The UAS receives > the an INVITE and > creates a IST. It responds with a 200 OK (IST > directly goes to the > terminated state) and waits for an ACK. At this > time, if a > re-transmission of invite is received (with the same > branch param in the > top via header), what should the UAS do? create a > new IST or ignore it? > If there is a solution, does it apply to the > re-invite? Thanks in advance > > Richard Wu > ASTRI > > This message (including any attachments) is for the > named addressee(s)'s use only. It may contain > sensitive, confidential, private proprietary or > legally privileged information intended for a > specific individual and purpose, and is protected by > law. If you are not the intended recipient, > please immediately delete it and all copies of it > from your system, destroy any hard copies of it > and notify the sender. Any use, disclosure, copying, > or distribution of this message and/or any > attachments is strictly prohibited. > > > _______________________________________________ > Sip-implementors mailing list > [email protected] > http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors > Mahipati Deshpande __________________________________________________________ Yahoo! India Matrimony: Find your partner now. Go to http://yahoo.shaadi.com _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
