SIP wrote: > In an ideal world, when Asterisk sent an ACK, whatever server/client it > was connected to would respond accordingly. It is, however, not an ideal > world, so this doesn't always happen.
This is not correct; there are no responses to SIP ACK messages. In addition. ACK messages are *required* for proper SIP operation; lack of an ACK to a response from Asterisk absolutely requires that Asterisk assume that either the response was never delivered to the requester, or that that requester has stopped responding. In either case, the SIP dialog/transaction in question must be terminated, because it is no longer in a determinate state. If the SIP network does not route ACK responses properly, it is broken. -- Kevin P. Fleming Digium, Inc. | Director of Software Technologies 445 Jan Davis Drive NW - Huntsville, AL 35806 - USA skype: kpfleming | jabber: kpflem...@digium.com Check us out at www.digium.com & www.asterisk.org _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- AstriCon 2009 - October 13 - 15 Phoenix, Arizona Register Now: http://www.astricon.net asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
