Plantronics 655 manual Adjusting call volume, To switch call, Do the following

Adjusting call volume

Handset Headset

During a call, press up or down to adjust call volume when you are using your handset, speakerphone, or headset.

Press up (towards the indicator light) or down (towards the microphone) to adjust call volume during a call.

Tip: For your comfort and health, always listen to calls at a moderate volume. For complete safety information, see page 53.

Switching calls between handset, headset, and speakerphone

To switch call:

Handset or Speakerphone ➔ Headset

Headset or Speakerphone ➔ Handset

Handset or Headset ➔ Speakerphone

Do the following:

Press the Headsetbutton for under 1 second or until you hear a single high beep. The Handset or Speakerphone key is no longer illuminated, and is now displayed on the screen.

Press Handset . The key lights up when the handset is active.

Press Speakerphone . The key lights up when the speakerphone is active.

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