Hi John, > Interestingly RINGING and REGISTER messages are working OK. The NAT > router is out of our control. Are we looking at a SIP ALG getting in > the way?
It probably is the NAT router. Have you tried "canreinvite=no" in sip.conf for these phones? Best regards, Jeroen Eeuwes -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
