In most cases, a wireless headset will work with any office phone. You just need to consider what you want your headset to do, and what wearing style you prefer.
If you simply want a wireless headset to use while working at your desk (non-remote answerable), all you will need is the wireless headset.
If you would like a solution that lets you answer and end phone calls from the headset itself while you are away from your desk (remote answerable), you will need either a handset lifter or an electronic hook switch (generally not included with the headset). This is the most common and most effective way to use your wireless headset. Check out the most popular wireless headsets.