Plantronics CS540 Convertible Wireless Headset System User Guide
User Manual: Plantronics CS540 Wireless Headset User Guide Plantronics CS Series Manuals - Telecomuserguides.com
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CS540™ 
Wireless Headset System
User Guide
Plantronics CS540 Wireless Headset

 2
ContentsContentsContents
Welcome    3
What’s in the Box    4
Base and Headset Basics    5
Accessories    6
Customize Your Headset    7
Change Headset Configuration    7
Left Earloop Assembly    7
Headband Assembly    8
Position Your Headset    9
Connect Your Desk Phone    10
Connect the Power    10
Charge the Headset    10
Connect and Configure Your Desk Phone    11
Desk Phone (standard)    11
Check Configuration and Make a Test Call    12
Desk Phone plus HL10 Lifter (sold separately)    13
Desk Phone plus EHS Cable    15
Position Your Base     16
Your Headset    17
Headset Controls     17
Talk Time    17
Battery    18
Muting Your Headset During a Call    18
Adjusting Your Headset Volume    18
Your Base    20
Base Phone Button and Switches    20
Subscription Button    20
Wideband/Narrowband Switch    21
Auto Answer Switch    21
Daily Use    22
Place an Outgoing Call    22
Answer an Incoming Call    22
Conference Up to Three Additional Headsets    22
Troubleshooting    23
Headset    23
Desk Phone    23

 3
Welcome
Welcome
Congratulations on purchasing your new Plantronics product. This guide contains instructions for 
setting up and using your CS540 Wireless Headset System. 
Please refer to the separate safety instructions for important product safety information prior to 
installation or use of the product.

Telephone interface cable
Power supply
Base
Headband
Other size eartip and earloops
Headset with pre-installed battery, 
eartip and earloop
 4
What’s in the Box
Fit kit instruction card

 5
Base and Headset Basics
 1 Call/mute LED
 2 Power on/subscription LED 
 3 Charging LED 
 4 Subscription button
 5 Narrowband/wideband switch
 6 Power jack
 7 Handset lifter/EHS cable jack
 8 Telephone interface cable jack 
 9 Auto answer switch
 10  Listening volume dial*
 11 Speaking volume dial*
 12  Configuration switch*
*For installation set up 12
11
6
58 9
10
4
BACK
FRONT
Headset overview
21 7
6
34 5
 1 Earloop
 2 Eartip 
 3 Volume/mute button 
 4 Call button
 5 Battery Cover
 6 Headset LED
 7 Microphone
1237
BOTTOM
Base overview

 6
Accessories
1  Behind-the-Head Headband Extremely light and comfortable wearing alternative.
2  Electronic Hookswitch Cable (EHS) Electronically takes your desk phone handset off hook. 
Enables remote call answer/end with your headset.
3  HL10™ Lifter Automatically lifts handset and returns it to the cradle. Enables remote call 
answer/end with your headset.
1
3
2

 7
Customize Your Headset
Your headset comes configured for your right ear with a pre-installed small 
eartip and medium earloop. You can also configure your headset for your left 
ear, install a different sized eartip and earloop, or install the headband.
Change Headset Configuration
1  Gently pull the eartip from the headset. Rotate the earloop down 90°. 
NOTE You will feel resistance when rotating the earloop down; this is normal. 
2  Remove the earloop from the headset.
3  To wear the headset on the right ear but with a different size earloop or eartip, select the size you 
want and reinstall in reverse order as shown. Be sure notch in the eartip faces the microphone.
Left Earloop Assembly
1  Choose the size of earloop that fits most comfortably. Align the earloop as shown and insert it 
onto the headset. Be sure the earloop is flat against the headset and rotate the earloop up 90°.
2  Choose the size of eartip that fits most comfortably. Align the eartip with the notch facing the 
microphone as shown. Press on to attach. 
90º
90º
90º
90º
90º
90º

 8
Headband Assembly
The headset can be rotated for wearing on the left or right ear.
NOTE Before installing the headband, remove the eartip and earloop from the headset. 
1  Hold the headband so it is aligned to receive the headset as shown and insert the headset into 
the headband.
2  Rotate the headset up.
3  To optimize the position of the headset, push the headset in so the microphone is close to the 
corner of your mouth.

 9
Position Your Headset
When you wear the headset, the microphone should rest as close to your cheek as possible 
without touching. The microphone can be adjusted inward by the pivoting earpiece to optimize 
the position of the headset.
1  Slide the headset over and behind your ear and fit the eartip into your ear.
2  Holding the base of the headset, push it in and back towards your ear to allow the pivoting 
earpiece to bring the microphone close to your mouth. As the base of the headset moves 
backwards, you will feel soft clicks until the microphone rests close to your cheek.

 10 10
Connect Your Desk Phone
This section describes how to connect the base to your desk phone. 
Connect the Power
Plug one end of the power supply into the power jack on the back of the base and the other end 
into a working power outlet. The Power On LED will be solid white. 
Charge the Headset
Place the headset in the charge cradle. The charging LED on the base will flash green when 
charging and turn solid green when the headset is fully charged. Charge for at least 20 minutes 
prior to the first use. A full charge takes 3 hours. 
NOTE This product has a replaceable battery. Use only the battery type supplied by Plantronics.
=
20.

 11
Connect and Configure Your Desk Phone
There are three setup options for connecting the CS540 to your desk phone. Select one of the 
following and continue. 
• Desk phone (standard) 
• Desk phone + HL10 lifter (sold separately) 
• Desk phone + EHS cable (sold separately)
NOTE If you will be using a standard desk phone set up or a desk phone with an HL10 lifter, 
continue below. If you will be using the desk phone with an EHS cable, refer to Desk phone plus EHS 
cable section in this guide. For further installation information refer to the EHS Getting Started 
guide that came with your EHS cable or at plantronics.com/accessories. 
Desk Phone (standard)
1  Connect one end of the telephone interface cable to the back of the base.
2  Disconnect the handset coil cord from the desk phone and re-connect it to the telephone 
interface cable junction box.
3  Connect the remaining end of the telephone interface cable into the open handset port on the 
desk phone. 
NOTE Your desk phone handset will continue to work; it’s just hooked up differently.
USE
NOTE If your phone has a built-in headset port, you should only use the headset port if you will not 
be using the HL10 lifter. In this configuration, you must press both the headset button on your phone 
and the call control button on the headset to answer or end calls. 

 12
Check Configuration and Make a Test Call
1  If your desk phone has a volume control set it to mid-range.
2  Look at the bottom panel of your base and make sure the default settings are correct. Set your 
desk phone’s volume also.
listening volume dial ( ) = 3 and speaking volume dial ( ) = 3 
configuration switch = A  
desk phone volume = mid-range 
3  Remove the handset from desk phone cradle.
4  While wearing your headset, press the call button on the headset.
5  If you do not hear a dial tone, adjust the configuration switch (A-G) until you do.
NOTE For most phones, these factory default settings will sound the best.  
6  Dial a test call from the desk phone. If needed, fine tune the volume with the headset volume 
controls. You can also adjust the desk phone speaking and listening volumes on the bottom of 
the base.

 13 13
Desk Phone plus HL10 Lifter (sold separately)
NOTE First follow the steps above for Desk Phone (Standard). 
1  Firmly press the handset lifter power cord into the handset lifter jack.
USE 
2  While wearing your headset, slide the handset lifter arm under the handset until the lifter base 
touches the side of the phone. 
3  Slide the lifter up to where it nearly touches the handset earpiece.
4  Press the call control button on your headset to activate the lifter.
5  If you hear a dial tone the lifter is set correctly and needs no adjustment. 
6  Remove the protective strips from the 3 mounting tapes on the underside of the lifter.
7  Gently place the lifter on the desk phone in the pre-determined position.
8  Press firmly to adhere.

 14 14
If You Do Not Hear a Dial Tone
1  If you do not hear a dial tone, raise the lifter height switch to the next highest position. 
2  Repeat steps 2 through 5 above as necessary until you hear a dial tone. 
3  When you hear a dial tone, secure the lifter as described in steps 6 though 8.
Additional Parts (if required)
Use extender arm when the handset lifter needs additional stability lifting and returning 
handset to cradle.
Extender Arm
1  Slide extender arm onto lifter.
2  Stabilizers can be shifted left and right. Position stabilizers on outsides of handset to gently 
grip the phone.
1
22
Ringer Microphone
Use ringer microphone only when the telephone speaker is not located directly under the 
handset.
1  Remove cover from ringer microphone jack on back of lifter.
2  Connect ringer microphone plug.
3  Place ringer microphone over phone speaker. Remove adhesive tape and attach.
1
2
3

 15 15
For Nortel Phones Only
Desk Phone plus EHS Cable
1  Connect the end of the EHS cable to the base and the other end to the desk phone as 
described in the EHS Adapter Getting Started guide.  
NOTE For further installation information refer to the EHS Getting Started guide that came with 
your EHS cable or at plantronics.com/accessories.

 16
Position Your Base 
The minimum recommended separation between your desk phone and the base is 6 inches.
The minimum recommended separation between the base and computer is 12 inches. 
Incorrect position can cause noise and interference problems. 

 17 17
Now that you’ve configured your headset and connected your desk phone, 
read this section to learn about the headset features, how to use the 
controls and more.  
Headset Controls 
321
1 Volume/Mute button 
Increase the volume
Decrease the volume
Mute/unmute a call
This table describes volume controls if you wear the headset on the right. 
The volume controls are opposite if you wear it on the left. 
Press the volume button up. 
Press the volume button down.
To mute/unmute the headset, press the volume/mute button in.
2 Call button
Place, answer, end a call Briefly press the call button. 
3 Headset LED Flashes white when in use.
IMPORTANT For your safety, do not use headset at high volumes for extended periods 
of time. Doing so can cause hearing loss. Always listen at moderate levels. For more 
information on headsets and hearing visit: plantronics.com/healthandsafety.
Talk Time
With a single full charge, the CS540 will provide up to 6 hours of talk time. Talk time will be 
reduced when operating in wideband mode or if the headset is used consistently at a far 
distance from the base. 
Your Headset

 18
Battery
This product has a replaceable battery. To ensure replacement batteries meet Plantronics high 
quality standards and for optimal performance, only use replacement batteries provided by 
Plantronics.
Low Battery Warning
If you are on a call and the headset battery is critically low, you will hear a repeated single 
low tone every 15 seconds indicating that the battery is low. You should recharge the headset 
immediately.   
If you are not on a call and press the call button, you will hear three low tones if the battery is 
critically low. You should recharge the headset immediately.
Battery Replacement
If after long use you notice that a fully charged battery is no longer lasting long enough, you 
can replace it. 
1  Slide battery cover down and remove from headset.
2  With your thumb and index finger, pull the battery out from the attachment clip.
3  With you thumb and index finger, grasp the battery connector and disconnect connector and 
battery from headset.
4  Install the new battery by reversing the previous steps.
Muting Your Headset During a Call
To mute/unmute the call, press the volume button in.  
When mute is activated, the Call/mute LED on the base will be solid red and you will hear three 
high tones (you will still be able to hear the caller).  
Adjusting Your Headset Volume
Fine-tune your headset volume by pressing the volume/mute button up (increase) or down 
(decrease) if you wear your headset on the right. If you wear it on the left, it’s opposite: press 
down to increase the volume and up to decrease the volume.
Make set up volume adjustments for the desk phone with the base volume dials.

 19
Out of Range Warning Tones
If you are on a call and go out of the operating range, you will hear three low tones. You will 
hear a single mid tone when you are back in range. 
If you stay out of range, an active call will be suspended. The call will be re-established when 
you walk back into range. If you remain out of range for more than 5 minutes, the system will 
drop the call.
If you are not on a call and go out of the operating range and then press the call button, you 
will hear a single tone for the button press and three low tones for the failure to make a link.

 20
Base Phone Button and Switches
1 Subscription Button
The headset and base that came in the box are subscribed (connected) to each other. However, 
if you wish to use a new headset or need to restore subscription to your current headset, the 
units can be subscribed to each other by the following two methods. 
Automatic Secure Subscription
With your system idle, docking a headset will automatically subscribe it to the base, making 
it the primary headset. The Power On/Subscription LED will flash white during subscription 
process and become solid white when the new subscription is established. 
Manual Over-the-Air Subscription
1  With your system idle and your headset undocked, press and hold the subscription button on 
the base for three seconds. The Power on/subscription light will flash white.  
2  Press and hold the volume up button on the headset for three seconds until the headset LED 
turns solid white. When the Power on/subscription LED on the base becomes solid white, the 
headset and base are subscribed to one another. 
NOTE If the subscription process times out after two minutes or if the subscription process 
fails, the subscription LED on the base will go dark for three seconds and then re-illuminate 
steadily to indicate power is applied to the base. If this occurs, try to re-subscribe the headset 
again.
Ending Subscription
If the base is in subscription mode and you want to stop the base from searching for a headset, 
press the subscription button again. The subscription LED on the base will go dark for three 
seconds and then re-illuminate steadily to indicate power is applied to the base.
Power On/Subscription LED
Base Status Power On/Subscription LED
Primary headset subscription  Flashes white
Primary headset subscribed to base  Solid white
Conference call headset subscription Flashes white
Active conference call with guest headsets Flashes white
Your Base
1 2 3

 21
2 Wideband/Narrowband Switch
The CS540 has wideband audio, which allows speech to sound clearer and more natural. If your 
desk phone is capable of wideband audio, set the Wideband-Narrowband switch to green for 
wideband. 
Set the switch to red (narrowband) for longer headset battery life or to increase the number of 
systems that can work in a small area. 
3 Auto Answer Switch
Auto answer saves a button press to establish the radio link between headset and base. When 
auto answer is set to red you must press the headset call button to answer an incoming call. 
When Auto Answer is set to green you can answer a call just by lifting headset from the base.
NOTE Auto answer/end capability requires the use of an EHS cable or HL10 lifter. Visit  
plantronics.com/accessories for more information.

 22
Place an Outgoing Call
1  Wearing your headset, press the headset call button. 
2  Remove the handset from the cradle. You will hear a dial tone. 
NOTE This step will be automatic if you install a lifter or EHS cable accessory. For a complete 
list of accessories, visit plantronics.com/accessories.
3  Dial the number using your desk phone. 
4  To end the call, press the headset call button and hang up the handset.
Answer an Incoming Call
1  Wearing your headset, press the headset call button.
2  Remove the handset from the cradle speak to your caller. 
NOTE This step will be automatic if you install a lifter or EHS cable accessory. For a complete 
list of accessories, visit plantronics.com/accessories. 
3  To end the call, press the headset call button and hang up the handset.
Conference Up to Three Additional Headsets
You can conference up to three additional headsets to a call in progress. 
Join a Conference Call
While the base has an active link (on a call), place the guest headset into primary user’s charge 
cradle (this connects the headset to the base). When the base subscription LED stops flashing 
white and becomes solid white, the primary headset/user will hear a tone indicating a guest 
wishes to join the call. Press the primary user’s call button to accept the guest headset within 
ten seconds or the request is terminated and the guest will hear an error tone in their headset. 
To connect a guest headset that is of different variety than the primary headset press the base 
subscription button while the base has an active link. Next, press the guest headset volume up 
button until the indicator light turns on. When the base subscription LED stops flashing white 
and remains solid white, the request to join will be heard in the primary user’s headset and the 
primary user will have to press their call button within 10 seconds to accept the guest
Exit a Conference Call
Guests headsets can remain as guests through multiple calls. To remove a guest headset, press 
the guest headset’s call button or dock the primary user’s headset in the charge cradle. A single 
tone in the master headset will be heard as each guest leaves the call.
Daily Use

 23
Headset
My headset is unstable. When you wear the headset, the microphone should rest as close to your 
cheek as possible without touching. The microphone can be adjusted inward 
by pivoting the earpiece to optimize the position of the headset. See Position 
your headset.
Talk time performance 
is significantly degraded 
even after a full recharge.
Battery is wearing out. Call Plantronics at (800) 544-4660 for ordering a 
replacement battery or contact us at plantronics.com/support.
Desk Phone
I can’t hear a dial tone in 
the headset.
Make sure your headset is charged.
Make sure your headset is subscribed to base. See Subscription button.
Press the call button on your headset.
If using a lifter, make sure the lifter is lifting the handset high enough to 
operate the hookswitch; set to a higher setting if necessary. 
Adjust the configuration switch on the base until a dial tone is heard. 
Fine tune the listening volume on the headset. 
If the volume is still too low, adjust the Listening volume dial on the base.
I hear static. Make sure there is at least 12 inches between your base and your computer, 
and 6 inches between your base and your telephone. You may hear static as 
your headset is going out of range; move closer to the base.  
The sound is distorted. Lower the Speaking volume dial or Listening volume dial on the base. For 
most telephones the correct setting is position 3.
If your desk phone has a volume control, lower until the distortion 
disappears. 
If the distortion is still present, adjust the headset volume control to lower 
the headset speaker volume.  If the distortion persists, lower the Listening 
volume dial on the base. 
Make sure there is at least 12 inches between your base and your computer, 
and 6 inches between your base and your telephone. 
I hear echo in the headset. Lower the Listening volume dial and Speaking volume dial on the base. For 
most telephones, the correct setting is position 3.
If the audio level is too low in this position, adjust the headset volume control 
to increase the headset speaker volume. 
If your speaking volume is too low for your listener in this position, adjust the 
position of the headset to make sure the microphone is as close as possible 
to your mouth. 
Adjust the Configuration switch. The most commonly used position is “A”, 
which is the default position. 
People I talk to can hear a 
buzz in the background.
Move the base further away from your phone.
If the base power supply is plugged into a power strip, plug it into the wall 
directly.
The handset lifter is 
installed but does not lift 
the handset.
Be sure the handset lifter power cord is firmly pushed into the handset lifter 
jack on the base.
Troubleshooting

Congratulations!
The product you have just purchased carries the TCO Certified Headsets 2 label. This means that your headset is designed and 
manufactured according to some of the strictest performance and environmental criteria in the world. The manufacturer of this 
headset has selected it to be certified to TCO Certified Headsets 2 as a sign of usability, high performance and reduced impact 
on the natural environment. 
Products certified to TCO Certified Headsets 2 are specifically designed for limiting the risk for hearing impairment. The headsets have acoustic limit 
protection to protect the user from sudden “sound-spikes” caused by interference on the telephone lines.
Other features of TCO Certified Headsets 2:
Ergonomics
•Volumecontrol,individualadjustmentandadaptation,replaceablepartsandqualitydurability.
Energy
•Lowenergyconsumptiononthechargingstation.
Emissions
•LowSARvalue.Lowelectromagneticeldssurroundingthecharger.
Ecology
•Productisdesignedforrecycling.ManufacturermusthaveacertiedenvironmentalmanagementsystemsuchasEMASorISO14001
•Restrictionson
o Chlorinated and brominated flame retardants and polymers
o Hazardous heavy metals such as cadmium, mercury, hexavalent chromium and lead.
All TCO labelled products are verified and certified by TCO Development, an independent third party labelling organization. For over 20 years, 
TCO Development has been at the forefront of moving the design of IT equipment in a more user-friendly direction. Our criteria are developed in 
collaboration with an international group of researchers, experts, users and manufacturers. Since the program’s inception, TCO labelled products have 
grown in popularity and are now requested by users and IT-manufacturers all over the world.
Full specifications and lists of certified products can be found on our homepage – www.tcodevelopment.com
  Avoid touching the contacts at the rear of the unit unnecessarily. If operation is interrupted by a static event, power-cycle the product to restore 
normal functions.
NEED MORE HELP?
plantronics.com/support
Plantronics, Inc.
345 Encinal Street
Santa Cruz, CA 95060
United States
Plantronics BV
South Point Building C
Scorpius 140
2132 LR Hoofddorp
Netherlands
© 2011 Plantronics, Inc. All rights reserved. Plantronics, the logo design, CS540, and HL10 are trademarks or registered trademarks of Plantronics, Inc. All other 
trademarks are the property of their respective owners. 
Patents US D635,548; D635,962; EM 001792276-0002; 001792276-0003; Patents Pending
85048-06 (07.11)
Plantronics CS540, CS540, CS540 headset, CS540 headset system, CS540 wireless phone headset, plantronics wireless headset, CS-540