Poly APS-11 EHS Cable

(4 customer reviews)


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Poly APS-11 EHS Cable (Unify/Siemens) (Poly 37818-11 or HP 85Q78AA)

  • Typically used on Unify/Siemens phones (EHS Guide)
  • Compatible with CS500 / Savi / Voyager Office series wireless headsets
  • Allows for remote answer/hang-up
  • Receive call alerts when away from your desk
  • Automates taking of calls
  • See pictures for setup/installation
  • Same Day Shipping On In Stock Items
  • Warranty 1-Year
  • Non-Returnable

Poly APS-11 EHS Cable (Unify/Siemens) – Poly 37818-11 or HP 85Q78AA

The Poly (formerly Plantronics) APS-11 Electronic Hook Switch (EHS) Cable part # Poly 37818-11 or HP 85Q78AA for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter.

This cable works with a variety of desk phones (Unify/Siemens, Funwerk, Auerswald, Agfeo, Aastra, DTeWe) and may work with additional manufacturers.

NOTE: APS-11 EHS cable will not connect directly to Aastra phones.  You will need to purchase Aastra part number: D0062-0011-34-00 directly from Aastra. 

Poly has several EHS cables, each being unique to a specific telephone and wireless product.
We strongly suggest confirming compatibility with us before purchasing.

APS-11 EHS Compatibility/Installation Guide

Poly APS-11 Installation Guide

Setup Instructions - Mitel















Setup Instructions - Unify















Cable Setup Instructions - Funkwerk















Poly APS-11 Compatibility:

Headset Compatibility

  • CS500 Series
    • Current: CS540, and all -XD variants
    • Discontinued: CS510, CS520, CS530
  • Savi Series
    • Current: 7210, 7220, 7310, 7320, 8210, 8220, 8245, and all -M variants
    • Discontinued: W710, W720, W730, W740, W745, and all -M variants
  • Voyager Series
    • Office Series: 4210, 4210, 4245, 5200
    • USB: When used with Voyager Office Base and all -M variants

Aastra Phone Compatibility:

  • OpenPhone 71, OpenPhone 73, OpenPhone 75, OpenPhone 73 IP, OpenPhone 75 IP
  • Office 70, Office 80, Office 70 IP, Office 80 IP
  • Aastra 5370, Aastra 5380, Aastra 5370IP, Aastra 5380 IP
  • Aastra 6771, Aastra 6773, Aastra 6775, Aastra 6773 IP, Aastra 6775 IP
  • Aastra 6753i, 6755i, 6757i, 6757i CT

NOTE: All require Part-No: D0062-0011-34-00 (“DHSG CABLE KIT”)

Mitel Phone w/ APS-11 EHS:

  • 5370, 5370ip
  • 5380, 5380ip
  • 6771, 6773, 6773ip, 6775, 6775ip
  • 6735i, 6737i, 6739i, 6753i, 6755i, 6757i, 6757i CT
  • 6865i, 6867i, 6869i
  • 7434ip, 7444ip

Unify (Siemens) Phone w/ APS-11 EHS:

  • OpenScape IP 35G, OpenScape IP 55G
  • OpenStage 30, OpenStage 40, OpenStage 60, OpenStage 80
  • Optipoint 410, Optipoint 420, Optipoint 500, Optipoint 600 (Optipoint require an acoustic adapter)

Agfeo Phone w/ APS-11 EHS:

  • ST30 (HS-Module 30 required)
  • ST31
  • ST40

Auserwald Phone w/ APS-11 EHS:

  • COMfortel 2500

Funkwerk Phone w/ APS-11 EHS:

  • CS290-U
  • CS410, CS410-U
  • IP-S400, IP290 plus

Swyx Phone w/ APS-11 EHS:

  • L420s
  • L440
  • L520s
  • L540

T-Com Phone w/ APS-11 EHS:

  • Comfort Pro 100
  • Comfort Pro 300, Comfort Pro 300 IP
  • Comfort Pro 500, Comfort Pro 500 IP
  • F20, F30, F40, F50
  • F640, F660, F680
  • F31 IP
  • L420s, F41 IP, L440

Note 1 = Phone and headset can go out of sync – answering headset will hang-up phone. User must answer and end from headset.
Note 2 = Special unit required – has bi-directional communications

Poly EHS Specifications:

  • Model: APS-11
  • Poly SKU: 37818-11
    • Formerly 37818-01 – APS-10
    • UPC: 0017229137325
  • HP SKU: 85Q78AA
    • UPC: 197497572544
  • Warranty: 1 yr

** Replacement note: The APS-11 EHS cable replaces the APS-10 cable and features compatibility with the Poly on-line indicator accessory.

NOTE: EHS cables will not connect directly to Aastra phones.  You will need to purchase Aastra part number: D0062-0011-34-00 directly from Aastra. 

Additional information for the Poly APS-11 EHS Cable


Poly, Plantronics


Same Day Shipping On In Stock Items








37818-11 (Poly), 85Q78AA (HP)


0017229137325 (Poly), 197497572544 (HP)

4 reviews for Poly APS-11 EHS Cable | Poly 37818-11 or HP 85Q78AA

  1. MJ

    They seem to be working well.

  2. telephone lady

    Hard to get excited about a cable but it makes my new phone functional. Couldn’t do with out it. Delivery was quick – 5 star all around

  3. ClintB

    I’ve used a lot of headsets in my time. By far this equipment is the best. Easily to install doesn’t do it justice. Someone with no electronic experience could figure this out. Directions are very easy to understand, and it’s a great price. Keep up the great work!

  4. Tamara

    The process was easy to accommodate our needs. We had new phones installed and needed adapters to work with our old headsets. They were able to get me with the right product and it arrive with no delay…I would recommend them to others…

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