I already have V5.1 running fine in my office with an IP of x.x.x.10 for 6 months. I installed V6 in another machine with IP x.x.x.20. After the configuring the new machine with resotring the V5 settings, I disconnect the old machine, change the new machine IP address to x.x.x.10. The system works fine. After a while, there is an error in the Stun Server Testout. It timeout with the address of tranport IP of x.x.x.20. Where can I find the settings to change to x.x.x.10. At the same time, I'm not able to make any call in. The line cut off automatically. Problem with the V6?