I bought one of these for my home study having seen them at work. It's fine, has lots of functions and they work well. Well built and good quality. It does everything you wouold want a desk phone to do. I like the caller list in particular.
Downsides? Well the buttons are a bit small. With so much space there's no reason why they needed to make them small and far apart, and the labels in small font. I suppose I'll get used to where the buttions are and what they do. The speaker function is OK. The person at the other end can hear me perfectly, when i listen to them, the phone tends to clip their first cylable slightly. If you want a true audio conference phone, I reckon you need tp pay £200-£300, so for what it costs, I'm not complaining about this phone. The volume control is good. If the person on tyhe other end is a little faint, there's scope to ampl;ify them a little. I recommend this phone. I'm pleased i bought it.