-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of varun Sent: Wednesday, March 14, 2007 11:28 PM To: [email protected] Subject: [Sip-implementors] 408 Request timed out
Hi, I am slightly confused about 408 request timeout response. When a UAC send an Invite and it doesn't get back any response, the UAC transaction generates a 408 response. >>Correct. Internally it treats/processes the call as though a 408 response has been received. The 408 response never comes from the UAS. >>It may for B2BUA implementation the UAC side of B2BUA would pass the 408 response ( after it's INVITE Timesout ) towards the server side of B2BUA to pass it to the originating UAC. So in this case the originating UAC will recived a final response 408. Am i right?Do you send an ACK for this to UAS. >>In the case where you received a final response from the network for INVITE Txn you have to send an ACK. >>In case your internal timeout results in UAC treating the call as though 408 response came in, then you should not send ACK to the network. Also, in caseof call forward no answer, do you get a 408 timeout response to initial invite and then you initiate a new invite to the forwarded number. >>Depends upon CFDA running on B2BUA or actual phone terminating UAS. In B2BUA case there is internal CFDA timers which will timeout and forward the call to the forwarding destination as provisioned on B2BUA subscriber. On the phone if CFDA is activated I think they make use of 301/302 mechanism to forward the call. Thanks varun Hope this helps and makes up for the confusion regarding the forking on proxy and B2BUA :) Indresh K Singh ________________________________________________________________________ ____________ Never miss an email again! Yahoo! Toolbar alerts you the instant new Mail arrives. http://tools.search.yahoo.com/toolbar/features/mail/ _______________________________________________ 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
