This is the Plantronics APC-43 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 IP phones:

Cisco  6945, 7821, 7841, 7861, 7942G, 7945G, 7962G, 7965G, 7975G, 8841, 8845, 8851, 8861, 8865, 

Also compatible with Panasonic KX-UTG300/200 phones .

Cisco IP 8961 9951 9971, you need the APU-72 instead

If you have Cisco 8941, 8945, 8945G use APC-82 instead

Note: Do not order this part if you don't have the listed Cisco phone models

Cisco phone setup:

1) The phone must be set for “Wireless Headset Hookswitch Control"

2) Press the settings button on the phone (Checkbox Icon). Select "Device Configuration" -> Select "Media Configuration"

3) If "Wireless Headset Hookswitch Control" is "Disabled", follow the instructions below

Enabling Cisco wireless headset EHS hookswitch control:

1) Access the Cisco server administrator with a browser. 

2) Select Device>Phone through the drop down menus. Click "Find" with no selection criteria to obtain a list of all phones

3) Open the desired phone. Scroll down to "Wireless Headset Hookswitch Control"  Set to "Enabled" Click "Apply". Wait for the dialog box to appear, then reset the phone by clicking the reset button

1 Year Warranty

Cisco Set up Guide: http://www.businessmachine.com.hk/userfiles/files/APC-43_Cisco.pdf