I've been running this phone to a Fritz box. The configuration by web interface was fairly basic, but if need be we can also strive YouTube. The color display is a little small, but the resolution is terrific. Only if you are the phone very far away, the signature could possibly be too small. But for me, it fits very well. A Plantronics Savi W710A can also be wonderfully connect (the appropriate adapter required).
The only tiny drawback for me, the display can not be time dependent off (Cisco-like). However, you can adjust for the normal operating mode and standby mode the display brightness in 10 steps. Presented also ;-)