Nice phone, easy to config

Strengths:

The text config files are far, far easier to manage than the Polycom phones.
Nice large display with microbrowser that's almost identical to Cisco XML language (simple substitution of XML names from "Cisco" to "Aastra" does the trick).
Good button placement, especially the 4-way arrows.
Works well with Plantronics headsets.

Weaknesses:

Low resolution, B&W display with no grayscale.

Summary:

Love this phone. The Polycom 550 has a better display, but the handset is easily knocked off where the Aastra's handset is flush with the top of the unit, and this phone is MUCH easier to program than the Polycom.