How to subscribe or pair your Plantronics CS351N wireless headset to the charging base.

Latest update: March 14, 2024

The CS351N wireless headset and charging base unit are originally subscribed or paired to each other.  If your CS351N headset breaks or you loose it and a replacement headset is necessary, you will have to “re-subscribe” or “pair” the new CS351N headset to the base unit.  This is a very simple process that takes less than 1 minute to pair and no tools are required. You will first need to purchase the replacement CS351N headset. (Part number 71778-10 to order).  Please be aware that if you have the CS351N , you will need replacement headset model number 71778-10.  The Subscription process is as follows:


Step 1:  Place your new CS351N headset in the charging cradle for at least 20 minutes to charge.  Once charged, remove the headset.






Step 2:  Press the speaking volume up “+”  button for 5 seconds until the power light flashes red on the front of the base.





Step 3:  Place the headset in the cradle and the power light will flash red for 2 seconds.

You have 10 seconds to complete the next step.




Step 4:  Press either the “+” or “-” signs (headset speaker volume buttons) for 3 seconds.





The headset talk indicator light will turn on (green) during pairing and then off indicating a successful pairing.





Step 5:  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).




Complete:  If pairing was successful, your CS351N headset is now operational.  If not, repeat the steps one more time or call a technician for assistance.

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