Plantronics CS50/55 warranty Return the headset to the charging cradle

The headset and base unit are supplied subscribed to each other. However, if you wish to use a replacement headset with the base unit, then the units must be re-subscribed as follows:

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The custom battery inside the headset should last 2-3 years. When talk time decreases significantly, you should replace the battery. Call Plantronics at (800) 544-4660 ext.5538 to order one. Once you receive it, follow directions below to replace.

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Return the headset to the charging cradle.

1.Press and hold both speaking volume fine tune buttons on the base unit for a minimum of 5 seconds. The power indicator will then flash red.

2.Press and hold the headset mute button for a minimum of 5 seconds. The talk indicator light on the headset will then illuminate green.

Successful re-subscription is indicated when the base power indicator is fully illuminated and the headset talk indicator light is off.

3.Disconnect the AC charger from the AC charging jack for 5 seconds.

4.Reconnect.

If re-subscription fails within 2 minutes, the headset will return to the un-subscribed state. Try the re-subscription process again or call Technical Support.

Pinch both sides of the battery cover and	Slide the battery out and gently separate
lift to remove.	at the connection. DO NOT pull the battery
	out by the wires.

To recover from some fault conditions (refer to Troubleshooting on page 18), you may need to perform a system reset.

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Reconnect and install the new battery.	Pinch both sides of the battery cover
	and replace.

1.Press both the call control button and the listening volume/mute but- ton for 5 seconds. When the talk indicator light blinks, release both buttons.

2.Press the call control button again. The talk indicator light will again blink briefly to indicate the headset is back to normal operation.

3.Disconnect the AC charger from the AC charging jack for 5 seconds.

4.Reconnect.

The system reset operation is complete.

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