I recently upgraded to this phone at my work, and it is pretty cool. This phone has two rj-11 ports, one for the handset receiver, and another one for a headset. I have a quick disconnect headset that I connect with an adapter to the phone, and it works perfectly. The calls are very clear, even when I am on a conference call with other employees dialing in.
The phone also has a speaker phone option, and projects the sound with a good amount of volume. There are buttons to increase and decrease the volume.
The menu is pretty easy to use, as well as changing your ringtone. There are several ringtones to choose from, so you shouldn't have a problem having a different one than someone else near you.
There are quite a few buttons on the phone that do different things, but my favorite is the "messages" button. It connects me right away to my voice mail, so it is easy to check my messages.
Overall, this is a pretty good phone for the office. It's compact, so it's a great space saver. The quality and ease of use are also a plus.