I have this paired with a Cingular 2125 AND a Jabra A210. Clarity could be better (ocassional static) but otherwise it's great.By using the Jabra A210 I can use my H700 with my office phone AND my cell phone. I simply turn off Bluetooth on my cell and turn on the Jabra when at my desk. When I leave I turn off the Jabra and turn Bluetooth on my cell. Takes about 1-2 minutes to work on the cell but then it's fine.