electronic Hook Switch Solution For Avaya Phones Jabra Link 14201-35 Enables Remote Electronic Hook Switch Control (ehs) With Jabra Wireless Headsets And The Avaya Series 1600 And 9600 (see Jabra Compatibility Overview Or Consult Your Jabra Sales Contact For The Right Solution).once Installed, Employees Can Control Their Call Directly From Their Jabra Wireless Headset Up To 450 Ft Away From Their Desk.