Question about Plantronics CS55 Wireless Headset

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CS55 headset battery was dead (app 1 1/2 years of service). I replaced it and fully charged. Worked fine for 3 or 4 days. Now, won't charge. Tried the system reset and power cycle, no change. Any thoughts?

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On your base there are the numbers 1-4. Put the # 1 in the 3 O'Clock position like a clock. Try putting the letters that are in the bottom on B.

Good luck from Headsets Direct - 800-914-7996.

Posted on Aug 18, 2011

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I am using a plantronics headset that I use normally everyday but yesterday while talking to a customer it made a click noise and then cut off I picked up the head set and finished my conversation. I then...


We're had customers call with similar issues. First, make sure your compatibility dial is set properly (located on the side of the base). If set incorrectly, it will make your headset inoperable. If that doesn't fix your issue, try disconnecting and reconnecting the battery and then perform a subscription. Both steps can be found below:

How to Replace your Plantronics CS55 Battery
How to Subscribe your Plantronics CS55 Headset

Good Luck from Headsets Direct!

Apr 28, 2011 | Plantronics CS55 Wireless Headset

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Echo is usually caused by the transmit (speak) level on the unit being set too high.

1. First, try lowering the volume of the telephone. If you still hear an echo, adjust the volume of the headset itself.

2. The master transmit controls of the headset are the ABCD switch settings on the bottom of the base. A is the lowest and D is the highest setting.

3. You can fine tune this setting with the plus (+) and minus (-) buttons on the back of the charging base.

4. If this doesn't fix the echo, try moving the configuration dial on the left side of the charging base. The recommended setting for most phones is 1.

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2 Answers

All of a sudden my CS 55 with plantronics stopped working. It shows that its on but the headpiece isnt charing and also doesnt work. Any ideas why?


If the Plantronics CS55 wireless headset shows that it is on, you have to make sure of the following things.

a. the green LED on the base turns on when you turn the call switch on from the headset.
b. the small green LED on the side of the headset is blinking.
c. the telephone headset is lifted from the cradle.
d. if the headset is not charging and the Amber light on the base does not blink when you place wireless headset on it; trying placing the headset more firmly.
e. If the headset is not charging and the Amber light on the base does not blink even after placing the wireless headset firmly on the charging cradle, you may need to change the battery.

Alternately you can try resetting the Plantronics CS55 wireless headset.

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If you have problems with the sound or connection of your Plantronics CS50, CS60 or CS55 wireless phone headset, you may want to try to hard reset it using the following steps:

Note: Ensure the IntelliStand switch (on the right side of the charging base) is in the - position and NOT the = position.

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

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

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

4. Reconnect the AC charger.

Now give the Plantronics headset a try.

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1 Answer

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