Polycom phones support STUN - that should solve the issue too. Cullin
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dr. Michael J. Chudobiak Sent: Wednesday, June 28, 2006 1:30 PM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: Re: [Asterisk-Users] Remote employees using Polycom 501 lose abilityto receive incoming calls after few minutes. Von L. wrote: > plugged in. They work immediately after being plugged in, but they > lose the ability shortly thereafter. They can always make outbound > calls, but only to real phone numbers, not extensions. > > They each have NAT routers, and I have triple checked that they have > opened/forwarded the correct ports, basically 5060-30000 UDP. Once > they See the "NAT Issues" section at http://www.voip-info.org/wiki/view/IAX. (The page is for IAX2, but the NAT issues are relevant for UDP SIP ports too). Basically, some NAT routers "forget" UDP mappings after a VERY short time (like 30 seconds). Took me a while to figure that out. - Mike _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
