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APC-4/APC-40/APC-41 (Cisco EHS Cable) Product Information

Electronic Hook Switch (EHS) cables provide communication between your phone and Plantronics headset, enabling you to answer and end your calls using your headset call control button.

Installation Information

  • Click here to view the installation instructions for the APC-4, APC-40, APC-41.

Compatibility Information

EHS cables are designed to work with specific phone models and Plantronics products. The table below provides the compatibility information for the APC-4, APC-40, APC-41.

EHS Cable Phone Make and Model Compatible Plantronics Product
Part No. 37978-01
  • 7942G
  • 7945G
  • 7962G
  • 7965G
  • 7975G
CS Series:
  • CS50
  • CS55
  • CS70/CS70N
  • CS351N
  • CS361N
Part No. 38350-01
Same as above CS500 Series:
  • CS510
  • CS520
  • CS530
  • CS540
Savi 700 Series:
  • W710
  • W720
  • W730
  • W740
  • W745
Savi Office:
  • WO100
  • WO200
  • WO300
  • WO350
Part No. 38350-11
Same as above Same as above

* The difference between the APC-40 and APC-41 is that the APC-41 includes a connector for your on line indicator (OLI) light.

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