Works With the Following Polycom Phone Systems:
- SoundPoint IP 320, 321, 330, 331, 335, 430, 450, 550, 560, 650, 670, VVX300, VVX310, VVX400, VVX410, VVX500, VVX600, VVX1500.
Compatible Poly Wireless Headsets
The APP-51 Electronic Hook Switch (EHS) adapter is compatible with a wide range of HP Poly (formerly Plantronics) wireless headset systems, enabling remote call control for enhanced flexibility and productivity. Supported headset models include:
- CS500 Series:Â CS540 and discontinued models such as CS510, CS520, and CS530
- Savi Series:Â Savi 7200, 7300, and 8200 Office Series, as well as legacy W700 models
- Voyager Series:Â Office Series models including the Voyager 4200 and Voyager 5200 (when used with a Voyager Office Base)
- Voyager Legend CS
These Poly headset systems, when paired with the APP-51 adapter, provide full Electronic Hook Switch (EHS) functionality, allowing users to answer and end calls directly from their headset for a smooth, hands-free communication experience.
Electronic Hook Switch Cable for remote desk phone call control (answer/end). This cable eliminates the need for a HL10 Handset Lifter. This cable works with Poly desk phones and may work with additional manufacturers, check with our Product Configurator for more information. Replacement Note: The APP-51 EHS cable replaces the APS-50 cable and features compatibility with the Plantronics On-line Indicator accessory.


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