On Thu, 2008-09-25 at 16:34 -0400, Tony Wyland wrote: > Curious if anybody has had success with Dialogic series DMG gateways. We > are experimenting with one and have one issue that seems likely to be caused > by the gateway. > > First, what works --- calls to SipX extensions work fine, calls that go > redirect to voicemail because there is no registered phone work fine, calls > from SIP phones going back to the gateway work fine. Transfers work fine. > Lots of things work except for one case - > > If a call comes from the Dialogic to SipX and a registered phone rings then > the call goes to voicemail because the phone was not answered, the call is > dropped by the Dialogic. When the gateway sees a request to connect to a > different media than was indicated in the "ringing" messages, it seems to > loose its mind a bit. It also forgets to tell the PBX to disconnect the > call. > > While working with Dialogic on the case, I wanted to see if anybody had > seen and fixed this problem before. Perhaps some magic parameter would make > it feel better. Another indicator of a Dialogic issue is that calls between > SipX registered phone are always fine as well as calls through an Audiocodes > gateway.
This sounds very much like they are not doing dialog matching correctly on the early dialogs. We see this a lot with implementations that have not been tested with a forking proxy. If you collect a call trace and post it here, I may be able to see which of the several flavors of this error they may be having. See: http://sipx-wiki.calivia.com/index.php/Display_SIP_message_flow_using_Sipviewer#Getting_SIP_Messages_to_display when you get the trace data, post the trace with a description of your configuration (identify components by IP address), and which call in the trace you're talking about (by call-id or frame number in the trace, preferably). _______________________________________________ sipx-users mailing list sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users
