Plantronics 38439-11 APP-51 Electronic Hookswitch

Plantronics APP-51 EHS hookswitch adapter

Works with Plantronics wireless headsets CS500 series and Savi Headsets: CS510, CS520, CS530, CS540, CS510-XD, CS520-XD, CS540-XD, CS545-XD, W710, W720, W730,W740, W745,W710-M, W720-M, W730-M, W740-M, W745-M and Voyager Legend CS
Designed for use of your Plantronics wireless with Polycom DESK PHONE MODELS SoundPoint® IP320 SoundPoint IP321 SoundPoint IP330 SoundPoint IP331 SoundPoint IP335 SoundPoint IP430 SoundPoint IP450 SoundPoint IP550 SoundPoint IP560 SoundPoint IP650 SoundPoint IP670 VVX300 VVX310 VVX400 VVX410 VVX500 VVX600 VVX1500 phones
The APP-51 EHS cable replaces the APS-50 cable and features compatibility with the Plantronics On-line Indicator accessory.