The CS55 Plantronics wireless headset and charging base unit are originally subscribed or paired to each other. If your CS55 headset breaks or you loose it and a replacement headset is necessary, you will have to “re-subscribe” or “pair” the new CS55 headset to the base unit. This is a very simple process that takes only 2-3 minutes and no tools are required. You will first need to purchase the replacement CS55 headset. (Part number 72195-03 to order).Please be aware that if you have the CS55, you will need replacement headset model number 72195-03. Although the CS50 and CS55 headsets look the same, they are not interchangeable. The Subscription process is as follows:

Step 1

Return the CS55 headset to the headset base/charging cradle.

Step 2

On the back of the base unit, press and hold both of the microphone (talk) volume buttons (+ and -) for a minimum of 5 seconds. The red power indicator light on the front of the base will then start to flash, when it does, let the buttons go.


Step 3

Push in (down in the picture) and hold the black mute button for a minimum of 5 seconds (The mute button is located at the end of the headset).


The green light on the headset will then come on.

(Keep in mind that these 2 things need to be happening at the same time – red light flashing and green light illuminated on headset)


Successful re-subscription is indicated when the red power light stops flashing and is solid, and the light goes off on the headset.

Step 4

The last step is to unplug the AC power adapter for 5 seconds, then reconnect. You can do this by unplugging at the wall or the bottom of the base (as pictured).


Note: If re-subscription fails within 2 minutes the CS55 headset will return to the un-subscribed state. Try the re-subscription process again.

2019 Headset Buyers Guide