#cs540 tech support

Does your Plantronics CS540 squeal or have static during calls?

If your CS540 squeals or has static during a call that both you and your caller hears, try re-subscribing the base to the headset.

Manual Over-the-Air Subscription:

1) With your Plantronics CS540 idle and your headset undocked, press and hold the subscription button (Labeled 1) on the base for three seconds. The Power on/subscription light will flash white.

2) Press and hold the volume up button…