Plantronics APN-91 Electronic Hookswitch for NEC Phones

Plantronics APN-91 – Electronic Hookswitch for NEC Phones

The Plantronics APN-91 is an Electronic Hookswitch (EHS) adapter that enables remote call control between your Plantronics headset and compatible NEC desk phones. If you’re tired of manually lifting the handset every time a call comes in, this small adapter lets you answer, end, and mute calls directly from your wireless headset – no need for a bulky mechanical handset lifter. Designed for many NEC phone models (including the SV8100, SV8300, Univerge series, and more), the APN-91 connects between your phone and Plantronics headset base. Setup is plug‑and‑play: just connect, pair, and enjoy true hands‑free communication.

How It Works

The APN-91 connects to your NEC phone’s dedicated headset port or handset port (typically RJ9 or RJ45) and to your Plantronics headset base (e.g., CS500 series, Savi 700 series, Voyager Focus UC base) using the included cables. Once installed, the adapter intercepts the phone’s hookswitch signals. When you press the call control button on your headset, the adapter tells the phone to go off‑hook – exactly as if you had lifted the handset. Press again to end the call, and the phone hangs up automatically. The adapter also supports mute and volume control from your headset. No external power supply is needed; the APN-91 draws power from the phone’s headset port. For a complete wireless experience, pair this EHS adapter with a high‑quality wireless headset – browse our selection at FindHeadsets for Plantronics and Poly models that are fully compatible.

Compatibility & Design

The Plantronics APN-91 is designed for use with NEC phone models that support electronic hookswitch, including NEC SV8100, SV8300, Univerge SV9100, DT300, DT700, DT800, and many IP and digital series. It works with Plantronics headset bases that feature an EHS port, such as:

Plantronics CS500 series (CS510, CS520, CS530, CS540)

Plantronics Savi 700 series (W710, W720, W730, W740)

Plantronics Voyager Focus UC base

The adapter is compact (approx. 2 x 1.5 x 1 inches) and sits discreetly between your phone and headset base. It includes a short RJ9 or RJ45 cable (depending on your phone). The unit is black with a small status LED. No drivers or software are required – it’s pure plug‑and‑play.

Why Choose This Product

Without an EHS adapter, using a wireless headset with an NEC phone forces you to either manually lift the handset or use a mechanical handset lifter. The APN-91 is a much cleaner, more reliable solution. It provides true electronic hookswitch control: answer, end, and mute directly from your headset. It also improves audio quality because the signal stays electronic rather than passing through a mechanical connection. For call center agents, busy executives, or anyone taking many calls daily, the time saved and reduced motion strain add up significantly. Plus, it keeps your desk tidy and professional. Compared to universal EHS adapters, the APN-91 is specifically optimized for NEC phones, ensuring flawless operation.