Time to get my phone system working for VOIP across ISA. It really needs to be like a published server, but I cant get the protocols ironed out. I cant get an answer on which directions the protocols/ports need to be configured, send, send/receive, receive/send, etc. So I thought there would be a way to allow everything going and coming from the external address to the system itself. Will it work? I don't have a DMZ or tri-homed ISA Box. Jeff Sloan Network Administrator Cross Oil Refining & Marketing, Inc. 484 E. 6th St. Smackover, AR 71762 Phone 870-864-8688 Fax 870-864-8689 Cell 870-866-9941