Change Server on IP Phone
Use the top left soft key to go into menu.
Use the middle button to scroll down to phone
Use the center of the middle button to accept
Scroll down to Phone Information accept
On the Key pad type*153#
Click on Easy Install
Hit next until you get to Server IP
Change this to xxx.xxx.xxx.xxx (use the * key for . )
Hit next until the phone reboots
The phone should now be connected.