I just recieved our first GXP 2000 for testing. I read the instructions for setting it up in the 3CX manual. The menus on the phone itself were different but I was able to setup the network configuration and log into the phone with Internet Explorer. I set up the phone per the instructions in the 3CX manual and the 3CX website. The phone says it is registered and I actually dialed out once successfully. Now when I attempt to dial out I get a busy signal and the phone display shows the number "480". I am also unable to recieve calls. Strangely enough I can dial extensions ok. I just can't seem to call out or recieve external calls. I have dialed into the system using external phones and they are answered properly etc. so the lines arent tied up. The phone is an external device and is set set up with an external extension. The phone staus page is as follows: MAC Address: xx.xx.xx.xx.xx.xx IP Address: xxx.xxx.x.x Product Model: GXP2000 Software Version: Program-- 22.214.171.124 Bootloader-- 126.96.36.199 System Up Time: 0 day(s) 0 hour(s) 4 minute(s) Registered: Account 1: Yes Account 2: No Account 3: No Account 4: No PPPoE Link Up: disabled detected NAT type is open Internet Any ideas? Thanks again.