IMPORTANT SAFETY INFORMATION
Read and follow all instructions and warnings prior to using the
product.
When using your telephone equipment, these instructions and
warnings should be followed to reduce the risk of fire, electric
shock, injury to persons, and damage to property.
T
ELEPHONE
WELCOME
H
EADSET YSTEM
S
WARNINGS
For your comfort, health, and safety, do not exceed moderate
listening levels.
S12
The S12 Telephone Headset System is designed to add a
headset to an existing telephone.
Use only the Listed AC power adapter supplied by Plantronics.
Unplug this product from the wall outlet before cleaning. Do not
use liquid cleaners or aerosol cleaners.
The S12 System provides precise levels of listening and talking
comfort and crystal clear voice quality.
Avoid contact with liquids. Do not locate this product near water,
for example, near a bath-tub or sink, in a wet basement, or near a
swimming pool.
The S12 System is not designed to work on telephones that
have the dial pad in the handset or on cordless telephones.
This product should never be placed near or over a radiator or
heat register. This product should not be placed in a built-in
installation unless proper ventilation is provided.
This user guide provides the following steps to quickly set up
and use your headset system.
1. Identify the Components
Do not allow anything to rest on the power cord. Do not locate
this product near operating machinery or in areas where the
power cord is likely to be damaged by furniture or foot traffic.
2. Attach to Telephone
3. Set Amplifier Compatibility Switch
4. Make a Test Call
Discontinue use of product and contact Plantronics if the product
overheats, has a damaged cord or plug, has been dropped or
damaged, or if the product has been dropped in water.
The other side has more details:
Do not overload outlets and extension cords as this can result in
the risk of fire or electric shock.
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Examine other features
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Troubleshooting
Never disassemble or push objects of any kind into this product as
this may short out parts that could result in a fire or electric shock.
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Technical Support Center Information
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FCC Information
Use caution when installing or modifying telephone lines.
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Parts and Accessories
Warranty and Service
Do not use the telephone equipment to report a gas leak in the
vicinity of the leak.
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QUICK START USER GUIDE
S12 QUICK
S
TART
GUIDE
Left Side View
10
Headset Holder
Attach
Amplifier to
Telephone
11 Compatibility
Switch
Slide
Identify the
Components
12
S12 Amplifier
2
13
Headset Indicator
(Green)
Over-the-Head
1
2.1 Unplug your telephone
handset cord from the
telephone base.
14
Power Indicator
(Green)
Right Side View
2.1
15
16
17
18
1
Mute Indicator (Red)
Listen Volume Control
Mute Button
Adjustable
Headband
2.2 Plug your telephone
handset cord into the S12
amplifier handset jack.
2
Headset
Assembly
Headset/Handset
Button
Over-the-Ear
3
4
5
Clothing Clip
Headset Plug
21
2.3 Connect the cord
19
20
Speak Volume Control
2.4
2.2
between the telephone base
jack on the S12 amplifier and
your telephone base.
Microphone
Boom
Speak Volume Master
(Hi, Low) Switch
2.3
6
Ear Cushion
Assembly
21
22
Cord (Phone to
Amplifier)
2.4 Plug the headset plug into
the headset jack.
7
8
9
Earloop
AC Power Adapter
Pivot Ball Ring
®
2.5 Route the headset cord through the cable management
channel on the bottom of the amplifier (not shown).
Firefly In-Use
Indicator
Back View
10
2.6 Snap in the headset holder (not shown).
23
AC Power
2.7 Plug the AC power adapter into the AC power adapter jack
and plug into a standard
AC wall output.
Adapter Jack
24
25
26
Headset Jack
Handset Jack
Telephone Base Jack
2.7
Over-the-Head............converts to............Over-the-Ear
Set Amplifier
Compatibility
Slide Switch
Make a
Test Call
3
4
3.1 Put on headset and press the
headset button.
3.1
3.2
4.1 Verify that the mute button is off.
The mute indicator should not be illuminated
13
The headset indicator
on (green).
should be
4.2 Remove the phone handset from the
cradle and place on your desk.
3.2 Lift the telephone’s handset off
the cradle and place it on your
desk.
4.1
1. If you do not hear a dial tone in the
headset, press the headset button.
3.3 If you hear a clear dial tone,
you can proceed to Step 4.
The headset indicator is on.
4.3 Use your telephone keypad to call a
friend or colleague.
3.4 If you don’t hear a dial tone,
adjust the compatibility slide switch
following this process:
4.4 Adjust the listen volume using the listen
volume control.
1. Slide the compatibility slide
switch until you hear a clear dial
tone.
4.21
4.5 If your friend cannot hear you, or you
hear a buzz or hum, try changing the
compatibility slide switch.
4.4
4.5
3.4
There may be multiple settings
with a dial tone. Select the one
that sounds most like the handset
of your phone.
4.6 Adjust how loud you sound to the other
party by adjusting the speak volume control.
4.7 If you sound too loud, move the speak
volume master switch to its lower setting and
adjust the speak volume control.
Experimenting with various switch
settings will not harm the amplifier
or your telephone.
4.8 After completing the call, return the
handset to its cradle.
4.6
4.7
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