Plantronics APV-6B Electronic Hook Switch (EHS) cable for Avaya Phones - communicates electronically with the phone, eliminating the need for the HL10 lifter, and allowing you to remotely answer and end your calls without having to be at your phone.

Compatible with Avaya phone models: 2420, 4610SW, 4610, 4620, 4620SW, 4621SW, 4622SW, 4625SW, 4630SW, 5420, 5610, 5620 Works with Plantronics models: CS70N, CS50, CS55, Voyager 510S, SupraPlus Wireless Eliminates the need for the HL10 handset lifter Remotely answer and end your calls