I think I figured out what is the problem. IP Phone -> Opensips -> PSTN have no problem
PSTN -> OpenSIPS -> IP Phone will produce this error -- View this message in context: http://opensips-open-sip-server.1449251.n2.nabble.com/ERROR-mediaproxy-tm-request-in-could-not-create-new-dialog-tp6817274p6817852.html Sent from the OpenSIPS - Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@lists.opensips.org http://lists.opensips.org/cgi-bin/mailman/listinfo/users