Polycom Compatible Plantronics VoIP Wireless Headset Bundle with Electronic Remote Answerer (EHS) included | SoundPoint® Phones: IP 335, IP 430, IP 450, IP 550, IP 560, IP 650, IP 670, VVX300, VVX500, VVX310, VVX600, VVX400, VVX1500, VVX410
Plantronics CS540 Setup, Installation, and Users Guide
NEC Compatible Plantronics Cordless Headset Bundle -CS540 EHS with Electronic Remote Answerer | NEC phones: DT850, DT830, DT 750, DT 730, DT 330