43-1043.fm Page 1 Tuesday, August 17, 1999 10:36 AM
Cat. No. 43-1043
OWNER’S MANUAL
Please read before using this equipment.
ET-543
LCD Display 25-Channel
Cordless Telephone
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Important: Cordless phones such as
this one require AC power to operate.
When the AC power is off, you cannot
dial out or receive incoming calls using
your ET-543. For this reason, the ET-
543 cordless phone should not be your
only telephone. To be safe, you should
also have a phone that does not require
AC power to operate (not a cordless
phone)soyoucanstillmakeandreceive
calls if there is an AC power failure.
Warning: To prevent fire or shock
hazard, do not expose this product
to rain or moisture.
CAUTION
RISK OF ELECTRIC SHOCK.
!
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK OF
ELECTRIC SHOCK, DO NOT REMOVE
COVER OR BACK. NO USER-SERVICE-
ABLE PARTS INSIDE. REFER SERVIC-
ING TO QUALIFIED PERSONNEL.
This telephone has been tested and
found to comply with all applicable UL
and FCC standards.
This symbol is intended to alert you
to the presence of uninsulated dan-
gerous voltage within the product’s
enclosure that might be of sufficient
magnitude to constitute a risk of
electric shock. Do not open the
product’s case.
Your ET-543 operates on standard ra-
dio frequencies, as allocated by the
FCC. Therefore, it is possible for other
radio units operating on similar fre-
quencies, within a certain area, to in-
advertently intercept your conversa-
tions and/or cause interference on
your cordless telephone. This lack of
privacy can occur with any cordless
telephone.
This symbol is intended to inform
you that important operating and
maintenance instructions are in-
cluded in the literature accompany-
ing this product.
!
For your records, we urge you to
record the serial number of your phone
in the space below. The serial number
is located on the bottom panel of the
base.
Serial Number ______________
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READ THIS BEFORE
INSTALLATION
FCC STATEMENT
This telephone complies with Part 68
of FCC Rules. You must, upon re-
quest, provide the FCC registration
number and the REN to your phone
company. These numbers are located
on the bottom of your phone’s base.
We have designed your telephone to
conform to federal regulations, and
you can connect it to most telephone
lines. However, each device that you
connect to the phone line draws power
from the phone line. We refer to this
power draw as the device’s ringer
equivalence number, or REN. The
REN is shown on the bottom of your
phone’s base.
Note: You must not connect your
phone to any of the following:
• Coin-operated systems
• Party-line systems
If you are using more than one phone
or other device on the line, add up all
the RENs. If the total is more than five,
your phone might not ring. In rural ar-
eas, a total REN of three might impair
ringer operation. If ringer operation is
impaired, remove a device from the
line.
• Most electronic key phone sys-
tems
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CONTENTS
Installation ............................................................................................................ 6
Selecting a Location ........................................................................................ 6
Installing the Phone ........................................................................................ 6
Preparation ........................................................................................................... 7
Connecting the Battery ................................................................................... 7
Charging the Battery ....................................................................................... 7
Setting the Dialing Mode ................................................................................. 8
Operation .............................................................................................................. 9
Making/Answering a Call ................................................................................ 9
Using the Handset at the Base ................................................................. 9
Using the Handset Away from the Base ................................................... 9
Reducing Interference ................................................................................... 10
Using Redial .................................................................................................. 10
Using FLASH/DEL ........................................................................................ 10
Using Tone Services on a Pulse Line ........................................................... 11
Using Page ................................................................................................... 11
Memory Dialing ............................................................................................. 11
Storing a Number in Memory .................................................................. 12
Entering a Pause in a Memory Number ................................................. 13
Dialing a Stored Number ........................................................................ 13
Chain Dialing .......................................................................................... 14
Testing Stored Emergency Numbers ...................................................... 14
Troubleshooting ................................................................................................ 15
Care and Maintenance ...................................................................................... 17
Replacing the Battery .................................................................................... 18
The FCC Wants You to Know ....................................................................... 18
Lightning ....................................................................................................... 19
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INSTALLATION
SELECTING A LOCATION
INSTALLING THE PHONE
Select a location for the telephone that
meets these requirements:
Follow these steps to install the base
on a desk, shelf, or table.
• Near an AC outlet
• Near a telephone line jack
• Out of the way of normal activities
• Away from electrical machinery,
electrical appliances, and metal
walls or filing cabinets
• Away from wireless intercoms,
alarms, and room monitors
1. Plug one end of the supplied mod-
ular cord into the phone jack on
the back of the base.
The base’s location affects the phone’s
range. If you have a choice of several
locations, try each one to see which
provides the best performance.
2. Plug the modular cord’s other end
into a modular phone line jack.
3. Insert the supplied AC adapter’s
barrel plug into the DC 12V jack on
the back of the base.
If the phone line jack is not a modular
jack, you must update the wiring your-
self, using jacks and adapters avail-
able at your local RadioShack store.
Or, you can let the phone company up-
date the wiring for you.
4. Plug the adapter into a standard
AC outlet.
For the best reception, fully extend the
base’s antenna and place it in a verti-
cal position.
Notes:
• The phone company will charge
you for the installation of the nec-
essary jacks.
Caution:
You must use a 120V AC/
12V DC adapter that delivers at least
200 milliamps. Its center tip must be
positive, and its plug must correctly fit
the phone’s DC 12V jack. The supplied
adapter meets these requirements.
Using an adapter that does not meet
these requirements could damage the
phone or the adapter.
• The USOC number of the jack to
be installed is RJ11C.
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PREPARATION
CONNECTING THE
BATTERY
CHARGING THE
BATTERY
Before you use your phone for the first
time, you must connect and charge the
battery.
Before you charge the battery, set
POWER to OFF. Then place the hand-
set on the cradle so the CHARGE/
TALK indicator lights and let the bat-
tery charge for about 15 hours.
Slide off the battery compartment cov-
er on the back of the handset. Connect
the battery’s plug to the pins inside the
compartment.
When
on the handset lights, re-
charge the battery. To avoid damage
to the battery, always recharge the
handset before battery power grows
Replace the cover, then follow the in-
structions under “Charging the Bat-
tery.”
too weak to light
.
Notes:
• You can set POWER to ON while
the battery charges.
• If the CHARGE/TALK indicator
does not light when you place the
handset on the cradle, be sure the
battery is connected to the pins
inside the battery compartment
and the AC adapter is securely
connected to the base. Also,
check the charging contacts on
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the handset and base. If the con-
tacts are dirty or tarnished, gently
clean them with a pencil eraser.
SETTING THE DIALING
MODE
Set TONE/PULSE on the back of the
base for the type of service you have.
• About once a month, fully dis-
charge the battery by keeping the
handset off the cradle until
flashes, then return the
handset to the cradle and fully
recharge the battery. If you do not
fully discharge and recharge the
battery periodically, it loses its
ability to fully recharge.
If you are not sure which type you
have, do this test.
1. Set TONE/PULSE to TONE.
2. Lift the handset and listen for a
dial tone.
• The first time you use your phone
after charging a new battery, the
handset might not work and might
sound an error tone when you
press TALK. This might also occur
when you recharge a battery that
has been completely discharged.
If this happens, be sure the hand-
set is turned on, then return the
handset to the cradle for 5 sec-
onds. This resets the security
access code.
3. Press any number other than 0.
If the dial tone stops, you have
touch-tone service. Leave TONE/
PULSE set to TONE.
If the dial tone continues, you
have pulse service. Set TONE/
PULSE to PULSE.
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OPERATION
Your ET-543’s LCD display shows
telephone numbers as you dial them or
when you recall them from memory. It
shows the current channel number and
lets you know when battery power is
growing weak or the phone is out of
range of the base. The display also
shows indicators when you press
FLASH/DEL or PAUSE.
To make a call, lift the handset from
the base and press TALK so the key-
pad and the CHARGE/TALK indicator
on the base light.
Note: CH
and the currently used
MAKING/ANSWERING
A CALL
channel number appear on the display.
This number might change when you
return the handset to the base.
You can use your cordless telephone
in two ways: at the base or away from
the base.
To disconnect a call, replace the hand-
set on the base.
Using the Handset
at the Base
Using the Handset
Away from the Base
You can use the handset at the base
like a regular corded telephone. Just
set POWER to ON and place the hand-
set in the cradle.
To make or answer a call, set POWER
to ON and press TALK. The keypad
and CHARGE/TALK indicator light.
To disconnect a call, press TALK so
the keypad light and the CHARGE/
TALK indicator turn off.
Notes:
• CHand the currently used channel
number appear on the display.
• To conserve battery power, you
can turn off the handset’s power
when you are not making or
answering a call.
To answer a call, just lift the handset
from the base.
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• You can make or answer a call on
a phone on the same line as the
cordless phone, even if the hand-
set is away from the base.
• RANGE appears when the dis-
tance from the handset to the
base is out of the phone’s range.
• The keypad lights on the handset
turn off if no button is pressed for
more than 13 seconds.
The redial memory holds up to 80 dig-
its in the tone or pulse mode. The redi-
al memory also holds pause entries
(see “Entering a Pause” under “Memo-
ry Dialing”).
REDUCING
INTERFERENCE
RE-
Note: We recommend you not use
DIAL
CH
To reduce interference, press
to
to dial numbers that include a
tone (*) entry (see “Using Tone Servic-
es on a Pulse Line”).
switch to the next channel (25 chan-
nels in all) until you receive the best re-
ception. CH and the channel number
appear on the display.
USING FLASH/DEL
FLASH/DEL
Use
on the handset to per-
form the switchhook operation for spe-
cial services, such as call waiting.
USING REDIAL
To quickly redial the last number you
dialed, simply lift the handset from the
TALK
base and press
CHARGE/TALK indicator lights, and
REDIAL
again so the
For example, if you have call waiting,
FLASH/DEL
press
call without disconnecting the current
FLASH/
to take an incoming
then press
. The redialed num-
ber appears on the display.
call. FLASH appears. Press
DEL
again to return to the first call.
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Notes:
USING PAGE
• If you do not have special phone
PAGE
The
feature allows someone at
FLASH/DEL
services, pressing
the base to page you at the handset. It
also helps you find the handset if you
misplaced it.
might disconnect the current call.
• The redial memory does not store
FLASH/DEL
a
entry or any digits
FLASH/
entered after you press
DEL
With the handset’s power on, the
handset beeps four sets of two beeps
.
PAGE
when you press
on the base.
TALK
The
key on the handset flashes,
and the channel number and INT ap-
pear on the display.
USING TONE SERVICES
ON A PULSE LINE
Some special services, such as bank
by phone, require tone signals. If you
have pulse service, you can still use
these special tone services by follow-
ing these steps.
TONE/PULSE
1. Set
on the base to
PULSE
.
2. Dial the service’s main number.
Note: The handset will not beep during
a call.
3. When the service answers, press
*
on the keypad. Aappears on the
display. Then dial the additional
numbers. The phone sends these
numbers as tone signals.
MEMORY DIALING
You can store up to 30 phone numbers
for quick and easy dialing. Each stored
number can be up to 16 digits long.
4. When you complete the call, place
the handset on the cradle or press
TALK
to disconnect the call. The
phone automatically resets to the
pulse mode.
Notes:
TONE/PULSE
PULSE
is set to
• If
RE-
and you want to use tone dialing
for a memory number, you must
store the tone entry along with the
number.
Note: We recommend you not use
DIAL
to dial numbers that include a
*
tone ( ) entry.
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• To keep your accounts secure, we
recommend you do NOT store
your personal access code for
services such as bank-by-phone
in a memory location.
• The phone does not dial the
number at this point.
• If you enter a wrong digit, press
FLASH/DEL to delete the last
entered digit.
• If you enter more than 16 digits,
the phone buzzes and the dis-
play turns off. To dial a number
with more than 16 digits, see
“Chain Dialing.”
Storing a Number in Memory
1. With the handset’s power on,
press MEMORY. The keypad lights
and MEMappears on the display.
3. Press MEMORY again.
4. Enter the two-digit memory loca-
tion number (01, 02 ..... 30) where
you want to store the number. The
index number appears, and a long
beep sounds. The phone number
is now stored in the memory.
5. Pull out the memory index card at
the bottom of the base. Write the
person’s or company’s name and
index number on the sheet in pen-
cil (in case you want to change it
later).
Note: While you are storing a
number in memory, if you do not
press any button on the keypad
within about 9 seconds, the key-
pad light turns off and a buzz
sounds. You must press MEMORY
again so the keypad lights before
you can store the telephone num-
ber.
2. Enter the phone number you want
to store. The number appears on
the display.
6. Repeat Steps 1-5 to store other
telephone numbers.
Notes:
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Notes:
Dialing a Stored Number
• If you receive a call while you are
storing a number in memory,
There are three ways to dial a stored
number.
TALK
press
to answer the call.
After the call, begin again at Step
1 to store the number.
Method 1
1. Lift the handset from the cradle
• To change a phone number stored
in memory, simply store a new
phone number in that location.
TALK
and press
so the keypad
TALK
and
key light.
2. When you hear a dial tone, press
MEMORY
• To clear a memory location so no
number is stored there, press
, then press the number
buttons for the correct memory
location. The stored number
appears on the display, and the
phone dials the stored number.
MEMORY
twice, then press the
location number. A long beep
sounds. The phone number is
now cleared from the memory.
If a buzz sounds, you did not suc-
cessfully clear the memory loca-
tion. Try the process again.
Entering a Pause
in a Memory Number
In some telephone systems, you must
dial an access code (9, for example)
and wait for a second dial tone before
you can dial an outside number. If your
phone is connected to one of these
systems, you might want to enter a
pause at the appropriate point when
you store a phone number in memory.
Method 2
1. Lift the handset from the cradle
TALK
and press
so the keypad
TALK
and
key light.
At the appropriate place in the number,
PAUSE
press
to enter a 2-second
pause. Pappears. For a longer pause,
PAUSE
press
again.
PAUSE
Note: Each
entry uses one dig-
it of memory.
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2. Press SCROLL s/t to search for
the desired stored number. The
selected number appears on the
display.
2. Wait for the service to answer.
If you use pulse dialing to
Note:
dial the service, be sure you have
stored a * (tone) entry in the mem-
ory location you use to send the
additional information.
3. Press MEMORY and the numbers
for the memory location where the
additional information is stored.
The numbers appear.
3. Press ENTER. The phone dials the
4. To disconnect the call, press TALK
stored number.
so the TALK key does not light.
Method 3
Testing Stored
Emergency Numbers
1. With POWER set to ON and the
TALK key not lit, press SCROLL s/t
to search for the desired stored
number.
If you store an emergency service’s
number (police, fire, ambulance) and
you want to test the stored number,
make the test call during the late
evening or early morning to avoid peak
demand periods. Remain on the line to
explain the reason for your call.
2. Press TALK. The phone dials the
number automatically.
Chain Dialing
When storing numbers for special ser-
vices (such as alternate long distance
or bank-by-phone), store the service’s
main phone number in one memory lo-
cation and numbers for additional in-
formation in other memory locations.
To chain dial memory numbers, follow
these steps.
1. With the handset’s power on,
press MEMORY and the memory-
location number for the service’s
main number. The numbers
appear.
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TROUBLESHOOTING
We do not expect you to have any problems with your telephone, but if you do, the
following suggestions might help. If you still have problems, check other phones on
the same line to see if they work properly. If they do and the problem does not seem
to be with your phone service, take your phone to your local RadioShack store for
assistance.
Problem: The handset does not work.
Solutions:
• Be sure POWER is set to ON.
• Move the handset closer to the base.
• Be sure the phone line cord and AC adapter are correctly and securely con-
nected.
• Be sure the battery is connected and charged.
• Fully extend the base’s antenna vertically.
• Return the handset to the cradle for 10 seconds, then try again.
Problem: Volume drops or you hear unusual sounds.
Solution: Someone has picked up another phone on the same line. Hang up the
other phone.
Problem: Call is noisy.
Solutions:
• Do not place the base near appliances or large metal objects.
• Hang up and redial the number.
• Keep the handset away from interference sources such as computers, remote
control toys, wireless microphones, wireless alarm systems, wireless intercoms
and room monitors, fluorescent lights, and electrical appliances. If the interfer-
ence is severe, turn off the interfering device.
• Press CH to switch to another channel.
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Problem: The handset’s range decreases.
Solutions:
• Fully extend the base’s antenna vertically.
• Return the handset to the cradle, and recharge the battery.
• Be sure the antenna is not touching a metal surface.
Problem: Receiver sound flutters or fades.
Solutions:
• Be sure the battery is charged.
• Fully extend the base’s antenna vertically.
• Move the handset closer to the base.
Problem: Can make calls, but telephone does not ring.
Solution: Telephone company may be using unusual ringing methods. Your tele-
phone is designed for standard straight line bridged ringing.
Problem: Can receive calls, but cannot make calls.
Solutions:
TONE/PULSE
• Set
correctly for the type of service you have (see “Setting the
Dialing Mode”).
• Check with the phone company to see if service is out in your area.
Problem: You cannot answer/make a call and the handset sounds an error tone
TALK
when you lift it from the base or press
.
Solution: The phone might be receiving interference from another RF signal; or, if
the handset is away from the base during a long period of AC power failure, the
phone might loss its access protection code. Return the handset to the base for 5
seconds.
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CARE AND MAINTENANCE
Your ET-543 25-Channel Cordless Telephone with LCD Display is an example of
superior design and craftsmanship. The following suggestions will help you care for
your phones so you can enjoy it for years.
Keep the phone dry. If it gets wet, wipe it dry immediately. Liquids can
contain minerals that corrode the electronic circuits.
Handle the phone gently and carefully. Dropping it can damage cir-
cuit boards and cases and cause the phone to work improperly.
Use and store the phone only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices and
distort or melt plastic parts.
Keep the phone away from dust and dirt which can cause premature
wear of parts.
Wipe the phone with a damp cloth occasionally to keep it looking
CLEANER
new. Do not use harsh chemicals, cleaning solvents, or strong deter-
gents to clean your phone.
Modifying or tampering with the phone’s internal components can cause a malfunc-
tion and might invalidate its warranty and void your FCC authorization to operate it.
If your phone is not performing as it should, take it to your local RadioShack store
for assistance. If the trouble is affecting the phone lines, the phone company might
ask you to disconnect your phone until you have resolved the problem.
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Important: Your telephone contains a
rechargeable nickel cadmium battery.
At the end of the battery’s useful life, it
must be recycled or disposed of prop-
erly. Contact your local, county, or
state hazardous waste management
authorities for information on recycling
or disposal programs in your area.
Some options that might be available
are: municipal curb-side collection,
drop off boxes at retailers, recycling
collection centers, and mail back pro-
grams.
REPLACING THE
BATTERY
If you follow the instructions in “Charg-
ing the Battery,” the supplied battery
should last for several years. When the
battery loses its ability to fully charge,
order a replacement battery through
your local RadioShack store. Follow
these steps to replace the battery, then
charge the new battery according to
the instructions in “Charging the Bat-
tery.”
1. Slide off the battery compartment
cover and loosen the plastic strap
securing the battery. Then discon-
nect the old battery’s plug from
the pins and remove the battery.
THE FCC WANTS YOU
TO KNOW
In the unlikely event that your phone
causes problems on the phone line,
the phone company can temporarily
discontinue your service. If this hap-
pens, the phone company attempts to
notify you in advance. If advance no-
tice is not practical, the phone compa-
ny notifies you as soon as possible and
advises you of your right to file a com-
plaint with the FCC.
2. Insert the new battery in the com-
partment and secure it with the
plastic strap. Then connect the
battery’s plug to the pins inside
the compartment.
Also, the phone company can make
changes to its lines, equipment, opera-
tions, or procedures that could affect
the operation of the phone. The phone
company notifies you of these changes
in advance, so you can take the neces-
sary steps to prevent interruption of
your phone service.
3. Replace the battery compartment
cover.
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Your phone might cause TV or radio
interference even when it is operating
properly. To determine whether your
phone is causing the interference, turn
off your phone. If the interference goes
away, your phone is causing the inter-
ference. Try to eliminate the interfer-
ence by:
LIGHTNING
Your phone has built-in protection cir-
cuits to reduce the risk of damage from
surges in phone line current. These
protection circuits meet or exceed FCC
requirements. However, lightning strik-
ing the phone lines can damage your
phone.
• Moving your phone away from the
receiver
Lighting damage is not common. Nev-
ertheless, if you live an area that has
severe electrical storms, we suggest
that you unplug your phone during
storms to reduce the possibility of
damage.
• Connecting your phone to an AC
outlet that is on a different electri-
cal circuit from the receiver
• Contacting
your
local
Ra-
dioShack store for help
If you cannot eliminate the interfer-
ence, the FCC requires that you stop
using your phone.
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RadioShack Limited Warranty
This telephone product is warranted against manufacturing defects in material and
workmanship for one (1) year from the date of purchase from RadioShack company
owned stores and authorized RadioShack franchisees and dealers. Within this period
bring your RadioShack sales slip as proof-of-purchase date to any RadioShack
store.
This warranty does not cover damage or failure caused by or attributable to Acts of
God, abuse, misuse, improper or abnormal usage, faulty installation, improper mainte-
nance, lightning or other incidence of excess voltage, or any repairs other than those
provided by a RadioShack Authorized Service Facility, or transportation costs.
RadioShack is not responsible or liable for indirect, special, or consequential
damages arising out of or in connection with the use or performance of the prod-
uct or other damages with respect to loss of property, loss of revenue or profit, or
costs of removal, installation or reinstallation.
EXCEPT AS PROVIDED HEREIN, RadioShack MAKES NO EXPRESS WARRANTIES
AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION
OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do
not allow the limitation or exclusion of incidental or consequential damages and some
states do not allow limitation or exclusion of implied warranties; therefore, the aforesaid
limitation(s) or exclusion(s) may not apply to the purchaser. There will be charges ren-
dered for repairs to the product made after the expiration of the aforesaid one (1) year
warranty period.
This warranty gives you specific legal rights and you may also have other rights which vary from
state to state.
We Service What We Sell
10/95
RadioShack
A Division of Tandy Corporation
Fort Worth, Texas 76102
11A6
Printed in Hong Kong
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