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Small black rectangular adapter with a single cable connection

Plantronics

Plantronics APP-50 VoIP Hook Switch Adapter

SKU CH-3SSN-K7EZ0 MPN APP-50

A hook-switch adapter enabling automatic call answering via headset button for compatible Polycom SoundPoint IP desk phones

  • Product typeAccessories
  • Key featuresAutomatically answer a call by pressing a button on the head
  • Answer calls hands-free by pressing the headset button
  • Works with Polycom SoundPoint IP 320, 321, 330, 331 desk phones
  • Compatible with Polycom SoundPoint IP 430, 450, 550, 560 models
  • Supports Polycom SoundPoint IP 650, 670 executive phone series
  • New Plantronics APP-50 hook switch adapter for VoIP systems

Hook Switch Adapter for Polycom Phones

The Plantronics APP-50 connects compatible headsets to Polycom SoundPoint IP desk phones. It lets users answer or end calls directly from the headset button without touching the handset. Office workers and call-centre staff gain hands-free operation across the supported IP 320, 321, 330, 331, 430, 450, 550, 560, 650 and 670 models.

Passive Electronic Accessory

The adapter draws power from the telephone port and adds no audible noise or measurable heat to the workstation. It requires no external supply, software driver or configuration step during normal use. Power consumption stays negligible because the device only activates the hook-switch relay when a call is answered or terminated.

Replaces Handset Lifting for Supported Models

This accessory upgrades any listed Polycom SoundPoint IP phone that lacks built-in electronic hook-switch support. The jump is worth it when agents handle high call volumes and need to step away from the desk without missing calls. Buyers whose phones are not in the compatibility list or who need wireless DECT pairing should look elsewhere.

How it compares

Measured against everything we stock in IP Phones & VoIP Handsets, at today’s prices. Recalculated every night.

Price $41.99
Cheaper than about 87% of the 495 comparable items (median $138.99).

Specifications

Product
Brand namePlantronics
Model nameAPP-50
Product typeAccessories
Size & build
Shipping weight0.14 kg
Package size152 × 127 × 76 mm

Questions about this item

How do I install the APP-50 hook switch adapter on my Polycom SoundPoint IP 330 phone?

Plug the adapter cable into the headset port on the base of the IP 330, then connect your compatible Plantronics headset to the adapter. The step often missed is enabling hook switch or electronic hook switch mode in the phone menu so the headset button actually answers calls.

What maintenance or replacement will the APP-50 adapter need over time?

The adapter has no batteries or user-serviceable parts. If the cable jacket frays or the modular plug latch breaks from repeated unplugging, replace the whole APP-50 unit.

What is the first limit I will hit when using the APP-50 continuously on a Polycom SoundPoint IP 560?

The mechanical latch on the modular plug is the first wear point; frequent hot-desking that cycles the connector dozens of times a day will fatigue the plastic tab before the internal wiring fails.

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