Poly APS-11 EHS Cable HP 85Q78AA
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
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.
TECH TIP: APS-11 EHS Compatibility/Installation Guide
TECH TIP: Also compatible with ESI phones
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.


