About APT-31 Electronic Hook Switch (85Q84AA)

HP Poly/Plantronics APT-31 Electronic Hook Switch (EHS) Adapter 

The APT-31 Electronic Hook Switch enables electronic communication with the phone, removing the necessity for an HL10 lifter. This EHS cable is also compatible with the Plantronics Online Indicator (OLI). It is optimally used with Avaya phone models such as T3 Comfort, T3 Classic, OS33, T3 Compact, T3 IP II Comfort, T3 IP Comfort, T3 IP Classic, OS 13, TH 13, TM 13, and TS 13.

About Poly

As a trusted Poly partner, Telrex is proud to offer a full range of headsets, conference phones, business phones, video conferencing, software, and services. Poly's wide range of communication solutions allows your business to stay connected regardless of your team's location. Our Telrexperts have helped thousands of clients in various industries, from government and education to healthcare and financial services.