The Plantronics APS-1 Electronic Hook Switch module transforms your Polycom Unified IP phone experience through remote answer/end and ring alert. It is compatible with the following Polycom Unified IP Phone models: 320, 330, 430, 550, 560, 650, 670.

Features

• Enables remote or one touch call answer/end with your Plantronics wireless CS series headset.  Place or receive calls without a lifter.
  
• Compatible with Siemens standard desktop phones available in Australia