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APS-1/APS-10/APS-11 (Siemens/Funkwerk 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 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 APS-1, APS-10, and APS-11.

EHS CablePhone Make and ModelCompatible Plantronics Product
Part No. 38347-01
  • CS290U
  • CS410
  • CS410U
  • IP-S400
Siemens OpenStage
  • 40
  • 60
  • 80
Siemens Optipoint
  • 410 with acoustic adapter
  • 420 with acoustic adapter
  • 500 with acoustic adapter
  • 600 with acoustic adapter
CS Series:
  • CS50
  • CS55
  • CS70/CS70N
  • CS351N
  • CS361N
Part No. 37818-01
Same as aboveCS500 Series:
  • CS510
  • CS520
  • CS530
  • CS540
Savi 700 Series:
  • W710
  • W720
  • W730
  • W740
  • W745
Savi Office:
  • WO100
  • WO200
  • WO300
  • WO350
Part No. 37818-11
Same as aboveSame as above

* The difference between the APS-10 and APS-11 is that the APS-11 includes a connector for your on line indicator (OLI) light.

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