Plantronics APP-51 Electronic Hook Switch Cable for Polycom phones
Plantronics APP-51 Electronic Hook Switch Cable allows Plantronics Savi W700 series, CS500 series and the Voyager Legend CS headsets to remotely answer calls (just press button on wireless earpiece) with Polycom IP320/321, IP330/331, IP430, IP450, IP550, IP560, IP650, IP670 VVX500 and VVX1500 phones. Pick up Dee Why, NSW or will post for $15 (Australia only)