Plantronics CS50 and CS55 Wireless Headset Setup WITH Headset Port | Headset Advisor

This step by step guide will show you how to setup your Plantronics CS50 or CS55 wireless headset when connecting to a desk phone with an RJ9 headset port. If your desk phone doesn't have a headset port, follow the Plantronics CS50-CS55 standard setup guide.

Step 1- Connect AC power

Connect your AC power adapter to the Plantronics CS50 or CS55 charging base and let your headset charge for about 3 hours.

plug in ac power

Step 2- Pair your CS50 or CS55 headset to the charging base

  1. Turn your charging base around and press and hold the “+” and “-“ buttons at the same time, until the red LED light flashes on the front of your charging base, then release your fingers.
  2. Press straight down and hold on the mute button on your CS50 or CS55 wireless headset until a solid green LED light appears, then release.
  3. Red light will go solid and green light will go out, your headset is now paired.


plantronics cs55 pairing

Step 3- Plug in the included phone cord

Plug one end of the headset phone cord into the back of your Plantronics charging base.

plug cs55 phone cord in Follow these other helpful articles: Switching between your headband and ear hook wearing options Plantronics CS55 battery replacement guide

Step 4- Plug into the headset port

Plug the other end of your headset phone cord into the HEADSET port of your corded desk phone.

connect to headset port

Step 5- How to use your headset

Remove your headset from the charging base, press the on button (oval shaped silver button) and a solid green LED light will appear on the Plantronics charging base. At this point, press the headset button on your desk phone to answer/end calls. *In order to answer/end calls when away from your desk phone, you'll need the HL10 Lifter or EHS cable. Contact us today and we'll verify compatibility for you.

how to use headset- cs55

Category_setup guidesCs50Cs50 setupCs55Cs55 setupPlantronics cs50Plantronics cs50 setupPlantronics cs55Plantronics cs55 setup

1 comment



I have a Avaya Partnet 18D phone and a plantronics CS55 wireless headset. I am able to get a dial tone, and hear the call, but those calling in are not able to hear me. I have tried the pushing the mute button, and I do not get a different response.

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