This is the Plantronics APC-45 EHS cable for for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter.This cable works with Cisco IP Phones.

It is compatible with Plantronics CS540, CS510, CS520, CS530, Savi WO100, Savi WO200, Savi WO300, Savi WO350 , Savi W740, Savi W710, Savi W720, Savi W730 , Savi W745, Voyager Legend CS, MDA200 USB, MDA220 USB

This EHS adapter only works with the following Cisco phones:

SPA512, SPA514, SPA525G2

Note: Do not order this part if you don't have these models

Cisco phone setup:

Configuration change must be made through the Cisco Web Interface.

By default, EHS is disabled

Connect to the Cisco SPA phone using a web browser.

Select Voice

Select User

Select Audio

Under EHS = None, use the pull down to select Plantronics

1 year warranty

Cisco Setup Guide: http://www.businessmachine.com.hk/userfiles/files/APC-45_Cisco.pdf