Does anyone know the best was to do this Voip setup?
SITUATION: I have 6 Polycom vvw300 phones. Each phone has it's own IP address on my local lan (no remote sites involved other than the vendor). The vendor, Clarity Voice hosts the phones on their remote servers, there is no in house PBX etc.
REQUIRED SETUP: The vendor (Clarity Voice) says that the following ports need to be forwarded for access by their servers: 5060 and 5061 (TCP), 20000-40000 (UDP), 80, and 443. They also say to disable any SIP helpers (like most Voip phones). The ports need to be open for access by their servers either at 220.127.116.11-99 or 18.104.22.168-99
MY PROBLEM: I've been trying to setup NAT rules to forward these ports for each of the 6 static IP addresses, but it isn't working. The end result is phones ringing randomly or you can't transfer calls etc. So my question is how do I open the same ports for 6 different IP addresses?
I appreciate any ideas..... Thanks!