Plantronics APU-72 (202578-01) Electronic Hook Switch Adapter

PlantronicsSKU: 202578-01

Sale price$35.99


Plantronics EHS APU-72 Electronic Hook Switch Adapter

The Plantronics EHS APU-72 (202578-01) electronic Hook switch cable eliminates the need for an HL-10 Handset Lifter when remotely controlling the Answer/End function on your desk phone. Plantronics APU-72 is compatible with Cisco and Avaya/Nortel phones as well as select others. It is also compatible with the Plantronics On-Line Indicator accessory.

Software Requirements:

The Cisco server must be running Cisco CallManager System Version 4.1(3)SR5x or higher.
Verify by logging onto the Callmanager with a browser. Press the detail button on the main page to display the SW version.
The Cisco phone must be running firmware 8.3(3)x or higher.
Press the settings button on the phone (Checkbox icon). Select “Model information”. The firmware revision is listed under “Load File”

Phone verification

The phone must be set for “Wireless Headset Hookswitch Control” = Enabled
Press the settings button on the phone (Checkbox Icon). Select “Device Configuration” >> Select “Media Configuration”
If “Wireless Headset Hookswitch Control” is ” Disabled”, follow the instructions below.

Enabling Wireless Headset Hookswitch Control

In Plantronics APU-72 Access the server administrator with a browser. Select Device>Phone through the drop down menus.
Click “Find” with no selection criteria to obtain a list of all phones
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.

Expansion Modules

If the phone is equipped with a model 7914/7915/7916 expansion module:
The Expansion module will be plugged into the telephone AUX connector
Connect the APC-4 (APC-40) control connection into the expansion module
Use a 40287-05 adapter to extend the APC-4 (APC-40) audio input to reach the headset jack on the phone

Product information






Audio & Home Theatre


Headphone/Headset Accessories

Product Dimensions

4 x 3 x 1.9 inches

Item Weight

0.16 ounces

Shipping Weight

0.8 ounces

Item model number



  • Plantronics EHS APU-72 Typically used on Cisco & Nortel phones (EHS Guide)
  • Plantronics APU-72 Compatible with CS500 & W700 series wireless headsets
  • EHS APU-72 Allows for remote answer/hang-up
  • Plantronics EHS APU-72 (202578-01) Receive call alerts when away from your desk
  • Plantronics EHS APU-72 Automates taking of calls


Compatibility: Cisco Unified IP phones: 8861, 9951, 9971
Compatible with Cisco and avaya-nortel
Compatible with On-Line indicator

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