It does not have very effective echo suppression so you will probably have to use a headset or an echo-canceling speakerphone. Software updates are by paid subscription. Zydacron Z340 . This is a higher-priced system, but it also has better video, user interface and control tools. Good echo suppression.
Software updates are free.
You can discuss with him various options, maintenance agreements, etc as you wish. Note that Zydacron cards are often used in some models of other vendors' products, such as PictureTel, and so those work well also. The camera that comes with either of the above systems is small, and typically sits on top of your monitor. It works best for one-person views, as it has a fixed focal length and is aimed manually. If you wish to involve larger groups or rooms, then a separate more powerful camera is needed.