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Plantronics currently ships direct to consumer only to the United States, United Kingdom, Germany, France, Italy, Finland, Netherlands, Spain, and Australia.

APT-3/APT-30/APT-31 (Avaya/GmbH/Tenovis EHS Cable) Product Information

Article ID : 000006056
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 for installation instructions.
Compatibility Information
EHS cables are designed to work with specific phone models and Plantronics products. The table below provides the compatibility information for the APT-3, APT-30, and APT-31.
EHS Cable Warranty Phone Make and Model Compatible Plantronics Product
Part No. 38349-01
2 years Avaya/Tenovis
  • T3 Classic with Interface Adapter
  • T3 Classic with Interface Adapter, TH13, TM13
CS Series:
  • CS50
  • CS55
  • CS70/CS70N
  • CS351N
  • CS361N
Part No. 37820-01
2 years 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. 37820-11
2 years Same as above Same as above
* The difference between the APT-30 and APT-31 is that the APT-31 includes a connector for your on line indicator (OLI) light.

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