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Coiled black cable with modular connectors at each end

HP

HP Poly APC-43 EHS Cable 85Q55AA telephone accessory

SKU CH-8089-JBNFY MPN 85Q55AA

Electronic hook-switch cable connects compatible headsets to Cisco desk phones for remote call control without a handset lifter

  • TypeSwitch
  • Connect headset directly to phone without handset lifter
  • Remotely answer and end calls from headset
  • Compatible with Cisco desk phones for easy setup
  • Electronic hook switch cable eliminates mechanical lifting parts
  • Simple accessory connection streamlines desk phone workflow

HP Poly APC-43 EHS Cable for desk phones

The HP Poly APC-43 Electronic Hook Switch Cable connects compatible headsets directly to supported desk phones, removing the need for a mechanical handset lifter. It is intended for office workers who want to answer and end calls away from their desk using a wireless headset system.

Replaces a handset lifter with a single cable

By linking the headset base to the phone’s EHS port, the APC-43 lets users control calls remotely without lifting the handset. The manufacturer highlights compatibility with Cisco desk phones and notes that other manufacturers may also work; users should consult Poly’s compatibility guide before purchase.

Plug-in installation with one compatibility check

Installation consists of connecting the cable between the headset base and the phone’s dedicated EHS port, requiring no tools or software. The main issue buyers encounter is assuming the cable works with every desk phone; verifying the specific model against Poly’s guide prevents a non-functional setup.

Highlights

  • Connect headset directly to phone without handset lifter
  • Remotely answer and end calls from headset
  • Compatible with Cisco desk phones for easy setup
  • Electronic hook switch cable eliminates mechanical lifting parts
  • Simple accessory connection streamlines desk phone workflow

Specifications

BrandHP
ModelAPC-43
Part Number85Q55AA
TypeSwitch
Shipping weight0.23 kg
Package size152 × 102 × 51 mm

Questions about this item

Will the APC-43 cable itself wear out and need replacement over time?

The APC-43 is a passive electronic hook switch cable with no moving parts or batteries, so it does not have a defined service interval and only needs replacement if the connectors or wiring become physically damaged.

What is the first limitation when using the APC-43 continuously on a Cisco desk phone?

The cable enables remote call control without a handset lifter, and its sustained-use limit is the compatibility boundary — it is validated for Cisco desk phones and may work with other manufacturers only if listed in Poly's compatibility guide.

Does the APC-43 generate heat or draw noticeable power during all-day operation?

The APC-43 draws minimal power directly from the phone's port to operate the electronic hook switch, producing no measurable heat and adding negligible load to the phone's power budget.

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