Plantronics Vista Universal Modular Amplifier M12 Users Guide

							43346-01 (9•98)
345 Encinal Street
Santa Cruz
CA 95060
Tel 1.800.544.4660
www.plantronics.com
Printed in USA
© 1998 Plantronics, Inc.
Vista™
Universal Modular Amplifier
M12
Users Guide1
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							1Telephone Jack
2Screwdriver
3Handset Jack
4AC Power Supply Jack
5AC Power Supply
6Amplifier to QD Coil Cable
7Amplifier to Telephone 
Coil Cable
Install in 4 easy Steps
Step 1:Install batteries.
Step 2:Attach to phone and headset.
Step 3:Set default settings.
Step 4:Set telephone/amplifier 
compatibility switch.
Make a test call.
Learn the basics.
welcome
to the Vista™ Universal
Modular Amplifier
from Plantronics
®.
PA R T  I
PA R T  II
PA R T  III
The Vista Universal Modular Amplifier adapts your telephone
to a Plantronics headset and provides control of the sound
through your headset. The Vista amplifier has built-in sound
conditioning and protection.
This User Guide will help you install your Vista amplifier and
learn its basic operations.
The Vista amplifier is not designed to work on tele-
phones that have the dial pad in the handset or on
cordless telephones.
english iii ii
12
345
67
Vista™
Universal Modular Amplifier 
1Battery Access Door
2Telephone/Amplifier
Compatibility Slide Switch
3Telephone/Amplifier
Compatibility Slide Switch Cover
4Outgoing Volume Control
5Incoming Volume Thumbwheel
6Headset/Handset Selector
7Mute
8Headset Jack
+_
1
2345 6
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							install
in 4 easy steps
INSTALL BATTERIES
ATTACH TO PHONE AND
HEADSET
SET DEFAULT SETTINGS
SET TELEPHONE/AMPLIFIER
COMPATIBILITY SWITCH
I
PA R T
english iv
connections& features
Connect the Vista amplifier to your telephone as shown.
Follow the four easy steps on the following pages for
complete installation details.
Amplifier Features
•SoundGuard®Plus™Sound Compression protects you
•from harsh noises, such as fax tones
•Call Clarity
™System improves incoming and outgoing sound
•Switch easily between headset and handset
•Incoming and outgoing volume control
•Mute
1
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							english 3 english 2
INSTALLATION STEPS 
1. Unplug your telephone’s handset cord
from the telephone base.
2. Plug your telephone’s handset cord into
the Vista amplifier handset jack (    ).
3. Connect your telephone base to the
Vista amplifier telephone jack (    ) using
the short curly cord. On your telephone
base, plug the short curly cord into the
outlet normally used for your handset.
4. Plug the headset cord into the Quick
Disconnect™(QD) module on the long curly
cord coming from the front of the amplifier.
The QD will allow you to disconnect the
headset from the amplifier when you
are not using the phone, or need to
move away from the amplifier, while
leaving your headset in place.
STEP2attach tophone and headset
INSTALLATION STEPS 
The Vista Amplifier  requires  power
to work with most phones.
1. Remove the Battery Access Door located on
the side of the amplifier by placing your
thumb on the door and pushing down.
2. Install two AA alkaline batteries and
replace the door.
3. You will hear three “beeps“ through the
headset when the batteries are low.
STEP1installbatteries
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							english 5 english 4
INSTALLATION STEPS 
1. Put on headset.
2. Lift the phone’s handset off the cradle
and place it on your desk.
3. If you don’t hear a dial tone, adjust the
Telephone / Amplifier Compatibility
Switch as indicated below:
1. Remove the Telephone Compatibility
Switch Access Door by placing two fin-
gers or thumbs on the raised bumps and
pushing down.
2. Remove the flat, plastic screwdriver
from the bottom of the amplifier by slid-
ing it through the braces holding it in
place.
3. Make sure the amplifier is in the default
settings, and your telephone handset is
off of its cradle.
4. Using the screwdriver, slide the
Compatibility Switch until you hear a
clear dial tone. Experimenting with vari-
ous switch settings will not harm the
amplifier or your telephone.
STEP4set telephone/amplifierCompatibility Switch
INSTALLATION STEPS 
These are the default settings for 
headset use. 
1. Headset / Handset Selector is depressed 
(colored indicator showing).
2. Mute Switch is released (no colored 
indicator showing).
3. Incoming Volume Thumbwheel is set to 4.
4. The Outgoing volume has been pre-set. You
can adjust it when you place your first call
(see page 6).
STEP3set defaultsettings
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							MAKE A TEST CALL.
english 7
make 
a test call
II
PA R T
1. Put on headset. Refer to your headset’s User Guide to
adjust the microphone position for best performance.
2. Lift the phone’s handset off the cradle and place it on your desk.
3. Make sure your Vista amplifier settings are in default. See
page 4 for details.
4. Call a friend or colleague.
5. Adjust the Incoming Volume using the Incoming Volume
Thumbwheel. Refer to page 10 for more details.
6. Adjust the Outgoing Volume Control until the person on
the other end can hear your voice at an appropriate level.
See page 10 for more details.
7. If your friend cannot hear you, or you hear a buzz or hum,
try changing the Compatibility Switch. See page 5 for more
details.
8. Try activating the Mute function by depressing the Mute
Switch (colored indicator showing). Release the Mute
Switch (no colored indicator showing) to deactivate the
Mute function. See page 11 for more details.
9. If you used batteries in your Vista amplifier, try removing the
batteries. If you lose power, your phone model requires
power for your Vista amplifier. Replace the batteries.
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							LEARN THE BASICS.
Default settings
These are the default settings for 
headset use:
1. Headset / Handset Selector is depressed
(colored indicator showing).
2. Mute Switch is released (no colored
indicator showing).
3. Incoming Volume Thumbwheel is set to 4.
Making and Receiving Calls with aHeadset
1. Put on headset.
2. Make sure the amplifier settings are in
default.
3. Lift the phone handset  off the cradle
and  place on your desk.
4. Make or receive your call. You will use
the dial pad and/or other features of
your telephone as you would normally.
5. To end the call, hang up the handset.
english9
learn
the basics
DEFAULT SETTINGS
MAKING AND RECEIVING
CALLS WITH A HEADSET
ADJUSTING
MUTING A CALL
MAKING AND RECEIVING
CALLS WITH A HANDSET
•HEADSET INCOMING VOLUME
•HEADSET OUTGOING VOLUME
III
PA R T
8
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							LEARN THE BASICS
Muting a Call
1. Activate the Mute function by depressing the
Mute switch (colored indicator showing).
2. Deactivate the Mute function by releas-
ing the Mute switch (no colored
indicator showing).
Making and Receiving Calls with aHandset
1. Release the Headset / Handset switch
(no colored indicator showing).
2.  Use the phone handset as you normally
would.
11
LEARN THE BASICS
Adjusting Headset Incoming Volume
1. Adjust the volume by turning the
Thumbwheel on the top panel. 
2. Try different volume settings. 1 is the 
quietest and 9 is the loudest.
3. “Make a Test Call” (see page 7) provides
more details about adjusting your 
incoming volume.
Adjusting Headset Outgoing Volume
1. Outgoing Volume is pre-set. Try making a
test call before adjusting (see page 7). 
2. To access the Outgoing Volume Control,
remove the panel on the left-hand side of
the amplifier. The same panel houses the
Telephone / Amplifier Compatibility Switch.  
3. Use the screwdriver attached to the bottom
of the amplifier to adjust the Outgoing
Volume Control. Turn clockwise to make
your voice louder to the caller. Turn
counter-clockwise to make your voice qui-
eter to the caller.
4. Replace the panel door and the screwdriver.
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							maintenance 
and troubleshooting
A
SECTION
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MAINTENANCE AND
TROUBLESHOOTING
PROBLEMITEMS TO CHECK
I DO NOT HEAR A
DIAL TONE WHEN  I
TRY TO MAKE OR
RECEIVE A  PHONE
CALL.
If you are using batteries, confirm that they
are good and placed in the battery compart-
ment correctly.
If you are using an AC Power Supply, confirm
that it is plugged in and the power outlet is
turned on.
Confirm that the Headset / Handset Selector
switch is depressed (colored indicator showing).
Confirm that you have lifted the telephone
handset out of the cradle.
Confirm that the telephone handset cable and
the short curly pigtail to the telephone are con-
nected to the correct jacks. (see Installation”)
Confirm that the Telephone / Amplifier
Compatibility Switch is in the correct setting for
your phone (see “Set the Telephone / Amplifier
Compatibility Switch” on page 5). You may
want to try moving the switch through all of
the positions until you hear a clear dial tone.
Experimenting with various switch settings will
not harm the amplifier or your phone.
The Plantronics Help Desk is ready to assist you!
Monday through Friday 8:00 AM to 5:00 PM PST
800 544-4660
Maintenance Hints
Trouble Shooting Guide
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							15
MAINTENANCE AND
TROUBLESHOOTING
english 14
I GET A LOW PITCHED
HUM IN MY HEADSET
SPEAKER AND/OR  MY
CALLERS COMPLAIN
THEY CAN HEAR HUM.
I HEAR THREE ‘BEEPS’
IN THE  HEADSET.
PROBLEMITEMS TO CHECK
MY CALLERS SAY
THAT THEY  CAN’T
HEAR  ME AT ALL  OR
THEY CAN’T HEAR
ME VERY WELL.
Make sure the microphone of your headset is
positioned in front or near your mouth. If you
are using a “noise-cancelling” headset, the
position of the microphone is very important.
You may need to adjust the “Outgoing
Volume”. See “Adjusting Headset Outgoing
Volume” on page 10).
Confirm that the Telephone / Amplifier
Compatibility Switch is in the correct setting
for your phone (see Set the Telephone / Amplifier
Compatibility Switch” on page 5). You may
want to try moving the switch through all of
the positions until your caller hears you clear-
ly. Experimenting with various switch settings
will not harm the amplifier or your telephone.
Try moving the Telephone / Amplifier Compatibility
Switch through all of the positions until the
hum disappears. Experimenting with various
switch settings will not harm the amplifier or
your telephone.
If you are using batteries to power the Vista
Amplifier, the three ‘beeps’ tell you that the
batteries are low and need to be replaced.
See “Install Batteries”on page 2.
Trouble Shooting Guide
Maintenance Hints
parts 
and accessories
B
SECTION
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