Jabra Electronic Hook Switch (EHS) for Alcatel Phones . . . Product # 14201-20. . The Jabra / GN Netcom 14201-20 Electronic Hook Switch (EHS) adapter enables you to electronically answer and end calls through your wireless headset. It also lets you control volume and mute comments using in-built controls of the headset. This adapter makes hands free communictions possible up to 450 feet away from the desk. . . 14201-20