Electronic Hook Switch- communicates electronically with the phone, eliminating the need for a conventional mechanical HL10 lifter.
The EHS adapter is unique to a specific Telephone application & Wireless product
APC-45 is designed for Plantronics Wireless Savi and new CS500 series products.
Supported Phones Cisco
SPA SPA512G, SPA514G, SPA-525G, SPA525G, SPA525G2