Los Voyager 510 se pueden usar sueltos (sin la base, no he probado usándola somo como carga)  siguiendo estas instrucciones de sincronizado. En los teléfono se empareja el dispositivo y se puede usar directamente en llamadas entrantes y salientes.

Plantronics Voyager 510 Pairing Guide

Pairing your Plantronics Voyager 510 to Your Cell Phone

1. Put your phone into pairing modeThis can usually be accomplished by going under settings in your menu and selecting Bluetooth. Follow the prompts to «find a new device.» If you are having problems, refer to your phone’s user guide.
2. Put your Voyager headset into pairing modeStart with your headset on. Press and hold both the call answer button and the volume up button (marked with +) until the indicator flashes red and blue.
3. Select the headset in your phone’s Bluetooth device menu and enter in universal keyYour phone may or may not ask you to enter in a key code. If it does, the code is always four zeros: 0000