Plantronics RD1 CS Electronic Hookswitch for the following phones:
Shoretel IP phone models IP 100, 212, 212K, 230, 265, 420, IP 530, IP 560G, IP 560, 565, 565G, 655, 655G
Toshiba DP5000-Series, IPT 2008 SDL, IPT 2010 SD and IPT 2020 SD phones
Allworx or Paetec 9212, 9212L, 9204, 9224
Adtran IP712, IP706
All of the above telephone models can use this RD-1 Ring Sensor (78887-01) instead of the HL10 handset lifter for remote call answer/end capability on any of the Plantronics wireless office headset systems (CS55, CS70, CS70N, CS351N, CS500-series, CS510, CS520, CS530, CS540, CS545-XD, Savi W710, W720, W730, W740, W745, WO100, WO200, etc.).
These Shoretel phones, Toshiba phones and Allworx Paetec phones support native "load detect" (LD) therefore no HL10 handset lifter is needed. This RD-1 ring detector will provide a beep tone in your earpiece to alert you to a new call coming in. Simply press the button on your earpiece from anywhere within your range to answer/end your call.