Question about Plantronics PL-CS55 Wireless Headset

1 Answer

PL-CS55 headset lifts receiver but only get buzzing sound in

Earpiece. The headset previously worked flawlessly.

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  • Anonymous May 06, 2009

    My headset is all static and buzz... it was fine until a couple of weeks ago. :(

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  • Expert
  • 32 Answers

Try a system reset:
1. Lift the headset off of the charging cradle (the base).  Make sure the headset is turned off.  The green light on the base won't be on if the headset is turned off. 2. Hold down the call answer button on the headset at the same time as mute button.  The mute button is found on the little black wheel on the top of the headset.  Use the tip of your finger to push it straight in. 3. Hold both buttons until you see a green light on the headset flash.  It will be right below your thumb.  Hold both buttons until the green light flashes for a series of 2 flashes.  Then let go of both buttons. 4. Put the headset back on the charging cradle and wait 30 seconds.  Lift it back off and try again. 5. If this doesn't work repeat the process once more or try a resubscription.
Resubscription procedure:
1. Put the headset back onto the charging cradle.  Make sure the red light on the base is on and the yellow light is flashing. 2. On the back of the base there are two buttons for the microphone adjustment that can be pressed down.  Press both of those down until the red light and yellow light on the front of the base start flashing. 3. While the headset is still on the charging cradle press and hold the mute button until the red light on the base goes solid, and the yellow light stays flashing. 4. Unplug the power to the base and then plug it back in. 5. Wait 20 seconds and try.

Posted on May 22, 2009

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Related Questions:

1 Answer

I cannot here the phone ringing from my CS55 headset or another call coming in.


You will need the Plantronics HL10 handset lifter in order to have the CS55 ring, indicating an incoming call. The HL10 also allows you to answer remotely on most phones and hang-up remotely.

Plantronics HL10 Handset Lifter

Good Luck from Headsets Direct!

May 17, 2011 | Plantronics PL-CS55 Wireless Headset

1 Answer

Microphone does not work


you have to reset the head set by pressing the base button and the earpiece button toghether for about 10 sec and the system will be on factory settings.

Jul 08, 2009 | Plantronics PL-CS55 Wireless Headset

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Bad Sound


Check the telephone configuration dial: Refer to this picture to see what I'm talking about: http://headsetplus.com/images/cs55_controls.jpg
Make sure this dial is on 1.  Most of the time 1 works, however if it is already on 1 and you're still having problems, twist the wheel around through the different numbers and try this.
Have you tried turning the major sound adjustment up?  It's on the back of the base.  4 is the lowest setting and 1 is the highest.
Finally, try changing the volume on the phone itself.  One of these should work.
One last thing, make sure that the cord coming from the back of the base is plugged into the handset jack of the phone, not the headset jack, and that the coily cord coming from the phone's handset is plugged into the front of the cs55 base unit.

May 18, 2009 | Plantronics PL-CS55 Wireless Headset

2 Answers

No sound, not able to pickup receiver


On the CS55 headset itself, right below the speaker that sits on the ear is a cover that can be removed.  Inside is a small special battery.  The battery life tends to last about 3 years, and at that you should be getting 8 - 10 hours of talk time.  Once it's decreased to about 4 hours of talk time in a day, it's about time to replace the battery.

Apr 09, 2009 | Plantronics PL-CS55 Wireless Headset

1 Answer

Caller can't hear me when I talk.


Check to see where the CS55 is plugged into in your phone (The cord coming from the back).  You should NOT have it going into the headset jack of the phone.  It should go into the phone receiver jack, and the phone receiver coily cord should go into the front of the CS55 base unit.

Mar 31, 2009 | Plantronics PL-CS55 Wireless Headset

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The microphone in the lifter was not centered over the microphone on my phone, so all I did was centered the lifter over the microphone, and it works.

Mar 18, 2009 | Plantronics PL-CS55 Wireless Headset

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Turn on the wireless headset as soon as the HL10 lifter picks up the headset. Remember to press the call answer switch. A steady green light should come on the base and the wireless headset should have a small green blinking light on, on its side.

* Make sure your hand receiver is off the hook when using the headset. Also check that you hear a dial tone on the handset/hand receiver before turning on the headset.

Aug 04, 2008 | Plantronics PL-CS55 Wireless Headset

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Only if you have an HL-10 lifter installed... you will then be able to hear three short beeps in your ear to indicate the phone is ringing.

Jul 31, 2008 | Plantronics CS55 Wireless Headset

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Best Buy: Plantronics Problem


James, plug the phone cord that comes out of the back of the CS55 base into the handset port of the Cisco phone, not the headset port.  Then plug the coily cord from the cisco receiver into the front of the CS55.  Don't use the "Headset" button on your Cisco phone, just lift the receiver off.

Mar 21, 2008 | Plantronics PL-CS55 Wireless Headset

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