CS500 Series: How to Subscribe (Pair) a Headset to the Base
The headset and base unit are subscribed to each other right out of the box. If you need to use a replacement headset with the base, you have to subscribe (or introduce) it to the base.
To subscribe a headset to the base:
Simply dock your headset in the base. The power/subscription light (the white light on the base) flashes during the subscription process and glows solid when the headset pairs successfully.
Note: Only the last paired headset will work, so you will have to repeat this process whenever you need to use a different headset with the system.