The key feature of a phone is to be able to place a call. This IP based phone fails at this task in a spectacular way. Not only was I unable to place a call using this phone but in the process it displayed a nice error messages telling me that it couldn't render a web-page.
The problem arrises from the fact that most companies have a special code to dial outside the company. If you guessed "dial 9" you guessed wrong, and so did I. No matter what I tried I couldn't get an outside line. I couldn't get a dial-by-name directory. I couldn't get an operator and there was no help available.