Radio Shack ET-548 User manual

Cat. No. 43-1048
OWNER’S MANUAL
Please read before usin
g
this equipment.
ET-548
25-Channel Cordless
Headset Telephone
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2
FEATURES
Your RadioShack ET-548 25-Channel
Cordless Headset Telephone gives you
communication with both portability and
convenience. It comes in two parts, a
headset and a base.
The phone’s headset connects to a cord-
less remote keypad, so you can make
calls away from its base. The headset lets
you keep your hands free to do other
things such as cook or work at your com-
puter while you talk. The base’s space-
saving, upright design makes it perfect for
areas where space is limited.
Your phone includes these features:
Advanced Super CCT Circuitr
y
— pro-
vides sound clarity comparable to that of
a corded phone.
Securit
y
Access-Protection Code —
prevents other cordless phone users from
using your phone line while the remote
keypad is off the cradle.
COM-LOK®— ensures that other cord-
less phone users cannot use your phone
line when the remote keypad is on the
cradle.
10-Number Memor
y
Dialin
g
— lets you
store 10 numbers in memory for easy di-
aling.
Auto Scan — automatically selects a
clear channel when you pick up the
phone. You can also manually switch to
another channel.
Redial — lets you redial the last number
dialed, with the touch of a button.
Privac
y
— prevents the person on the
other end of the phone line from hearing
you as you talk to someone else in the
room.
Flash — sends an electronic switchhook
signal for use with special phone services
such as Call Waiting.
Touch-Tone or Pulse (Rotar
y
) Dialin
g
— lets you use your phone with either
type of service.
Belt Clip — lets you carry the phone’s re-
mote keypad on your belt for easy porta-
bility.
Hearin
g
-Aid Compatibilit
y
— lets you
use your phone with hearing aids that
have a T (telephone) switch.
© 1997 Tandy Corporation.
All Rights Reserved.
COM-LOK is a registered trademark used by Tandy Corporation.
RadioShack is a trademark used by Tandy Corporation.
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3
This phone has been tested and found to
comply with all applicable UL and FCC
standards.
Important Note: 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-548. To be safe, you should also have
a phone that does not need AC power to
operate (not a cordless phone) so you
can still make and receive calls if there is
an AC power failure.
Note: Your phone operates on standard
radio frequencies as allocated by the
FCC. It is possible for other radio units
operating nearby on similar frequencies
to unintentionally intercept your conversa-
tion or cause interference. This possible
lack of privacy can occur with any cord-
less phone.
We recommend you record your phone’s
serial number here. The number is on the
bottom of the base.
Serial Number: __________________
This symbol is intended to alert you to
the presence of uninsulated dangerous
voltage within the product’s enclosure
that might be of sufficient magnitude to
constitute a risk of electric shock. Do not
openthe product’s case.
This symbol is intended to inform you
that important operating and mainte-
nance instructionsare included in the lit-
erature accompanying this product.
The supplied adapter is a Class 2 120V
AC/12VDC adapter that delivers atleast
200 milliamps with its center tip set to
positive.
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.
Warning: To prevent fire or shock
hazard, do not expose this product
to rain or moisture.
CAUTION
!
!
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READ THIS BEFORE
INSTALLATION
We have designed your phone to conform
to federal regulations, and you can con-
nect 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 on the bottom of the
base.
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
phones might not ring. In rural areas, a to-
tal REN of three might impair ringer oper-
ation. If ringer operation is impaired,
remove a device from the line.
FCC STATEMENT
This telephone complies with Part 68 of
FCC Rules
. You must, upon request, pro-
vide the FCC Registration Number and
the REN to your phone company. These
numbers are shown on the bottom of the
base.
Note: You must not connect your phone
to any of the following:
• coin-operated systems
• party-line systems
• most electronic key phone systems
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CONTENTS
Installation .................................................................................................................... 6
Selecting a Location ................................................................................................ 6
Connecting the Phone ............................................................................................. 6
Connecting and Charging the Battery Pack ............................................................ 7
Attaching the Headset Holder ................................................................................. 9
Adjusting the Headset ............................................................................................. 9
Setting the Dialing Mode ....................................................................................... 10
Using the Belt Clip ................................................................................................. 10
Operation .................................................................................................................... 11
Making and Receiving Calls .................................................................................. 11
Changing Channels ............................................................................................... 12
Setting the Volume ................................................................................................ 12
Using Redial .......................................................................................................... 12
Using Privacy ........................................................................................................ 13
Using Flash ........................................................................................................... 13
Using Tone Services on a Pulse Line .................................................................... 13
Memory Dialing ..................................................................................................... 14
Storing a Number in Memory .......................................................................... 14
Entering a Pause in a Memory Number .......................................................... 15
Dialing a Stored Number ................................................................................ 15
Chain Dialing Service Numbers ...................................................................... 15
Testing Stored Emergency Numbers .............................................................. 15
Troubleshootin
g
......................................................................................................... 16
Care and Maintenance ............................................................................................... 18
Replacing the Battery Pack ................................................................................... 19
The FCC Wants You to Know ................................................................................ 20
Lightning ................................................................................................................ 21
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INSTALLATION
SELECTING A LOCATION
You can place the phone’s base on a
desktop, shelf, or table. Select a location
that is:
• near an AC outlet
• near a telephone line jack
• out of the way of normal activities
• away from electrical machinery, elec-
trical appliances, metal walls, filing
cabinets, wireless intercoms, secu-
rity alarms, and room monitors
The base’s location affects the phone’s
range. If you have a choice of several lo-
cations, try each to see which provides
the best performance.
Your telephone connects directly to a
modular telephone line jack. If your tele-
phone wiring does not have a modular
jack, you can update the wiring yourself
or have the telephone company update it
for you.
Notes:
• RadioShack stores sell jacks and
adapters to convert older wiring meth-
ods to modular wiring.
• The USOC number of the jack to be
installed is RJ11C.
Caution: The supplied adapter is a Class
2 120V AC/12V DC adapter that delivers
at least 200 milliamps with its center tip
set to positive. Its plug correctly fits the
phone’s DC 12V jack. Using an adapter
that does not meet these requirements
could damage the phone or the adapter.
CONNECTING THE PHONE
After you select a location for the phone’s
base, follow these steps to connect it to
AC power and to the phone line.
1. Plug one end of the supplied modular
cord into the TEL. LINE jack on the
back of the base.
2. Plug the modular cord’s other end
into a modular phone line jack.
Illustration
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3. Plug the supplied AC adapter’s barrel
plug into the DC 12V jack on the back
of the base.
4. Plug the adapter into a standard AC
outlet. The IN USE/CHARGE indica-
tor lights when the keypad is on the
base.
5. Lift the base’s antenna to a vertical
position.
CONNECTING AND
CHARGING THE BATTERY
PACK
The ET-548 comes with a rechargeable
nickel-cadmium battery pack in the re-
mote keypad. You must connect and then
charge the battery pack for at least 15
hours before you use it the first time.
1. Use a Phillips screwdriver to remove
the screw that secures the battery
compartment cover, then remove the
cover.
2. Slide the battery pack’s connector
onto the connector pins inside the
battery compartment.
3. Replace the cover and secure it with
the screw.
4. To charge the battery pack, place the
remote keypad on the base. The IN
USE/CHARGE indicator on the base
lights.
Illustration
Illustration
Illustration
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Recharge the battery pack when the
TALK/LOW BATT. indicator lights.
Notes:
• When you first use the phone after
charging or recharging the battery
pack, the phone might not work and
you might hear error tones. (You do
not hear the error tones if POWER is
set to OFF.)
If you hear the error tones, return the
remote keypad to the cradle for at
least 5 seconds to reset the security
access-protection code.
• About once a month, fully discharge
the battery pack by keeping the
phone off the base until the TALK/
LOW BATT. indicator lights. Other-
wise, the battery pack loses its ability
to fully recharge.
• If battery power is low, POWER is set
to ON, and the headset is not in use,
the TALK/LOW BATT. indicator slowly
flashes. If battery power is too low,
the indicator does not light.
Illustration
• If the IN USE/CHARGE indicator
does not light when you place the re-
mote keypad on the base, be sure the
battery pack and AC adapter are cor-
rectly and securely connected. Also,
check the charging contacts on the
remote keypad and base. If the con-
tacts are dirty or tranished, clean
them with a pencil eraser.
• If you are not going to use your phone
for an extended period of time, dis-
connect its battery. This helps to in-
crease the battery’s usable life.
Illustration
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9
ATTACHING THEHEADSET
HOLDER
Put the headset holder into the slot on the
back of the base and slide it into place.
ADJUSTING THE HEADSET
1. Put on the headset, and adjust the
band until it rests with almost no pres-
sure on your ear and the top of your
head.
If the headset is loose, remove it and
gently push the headset band inward
slightly to tighten it. If the headset is
tight, gently pull the headset band out
to loosen it.
2. Hold the headset in place, and turn
the microphone boom until it is about
2 inches from your mouth.
When you are not using the headset,
place it on the headset holder.
Illustration
Illustration
Illustration
Illustration
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SETTING THE DIALING
MODE
Set TONE-PULSE on the side of the base
for the type of service you have. If you are
not sure which type you have, do this sim-
ple test after charging the battery.
1. Set POWER to ON.
2. Set TONE-PULSE to TONE.
3. Lift the remote keypad from the base.
Then press TALK/HANG UP and listen
for a dial tone.
4. 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.
USING THE BELT CLIP
Use the belt clip to hang the remote key-
pad on your belt or waistband for hands-
free carrying.
Illustration
Illustration
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11
OPERATION
MAKING AND RECEIVING
CALLS
Before using the phone, put the headset
on and adjust it as needed. Then set
POWER to ON.
To make a call, press TALK/HANG UP.
You hear a dial tone and the TALK/LOW
BATT. indicator lights. Dial the number
you want to call.
To disconnect a call, press TALK/HANG
UP or place the keypad on the base.
To answer a call when the keypad is on
the base, pick up the keypad. The TALK/
LOW BATT. indicator lights.
To answer a call when the keypad is not
on the base, press TALK/HANG UP. The
TALK/LOW BATT. indicator lights.
Notes:
• To conserve battery power, set
POWER to OFF when the remote key-
pad is away from the base. When you
hear another phone on the same line
ring, set POWER to ON and press
TALK/HANG UP to answer the call.
• When you press a button, a single
tone indicates that the phone accepts
the command. Three tones indicate
that you pressed a button in error, you
are out of range, or there is too much
interference. If there is severe inter-
ference, move the remote keypad
closer to the base before you press
any key.
• If interference is severe, the remote
keypad might lose communication
with the base and the call might dis-
connect. This does not happen often,
but if it does, return the remote key-
pad to the cradle for a few seconds.
Illustration
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CHANGING CHANNELS
Your headset cordless telephone has an
Auto Scan feature that automatically se-
lects a clear channel when you press
TALK/HANG UP. If you experience inter-
ference during a call, press CHANNEL to
switch to another channel until you have
good reception.
SETTING THE VOLUME
The VOLUME control lets you adjust the
volume you hear through the headset.
This is especially useful for people who
have trouble hearing, or when you en-
counter poor phone lines or are in an es-
pecially noisy area like a kitchen or
workshop. Simply set VOLUME to the de-
sired listening level.
USING REDIAL
To quickly redial the last number dialed,
press TALK/HANG UP then REDIAL/
PAUSE.
Notes:
• The redial memory holds up to 80 dig-
its in the tone mode and 79 digits in
the pulse mode, so you can redial
long-distance as well as local num-
bers.
• The redial memory can also switch
from pulse to tone dialing (see “Using
Tone Services on a Pulse Line” on
Page 13) and can store PAUSE en-
tries (see “Entering a Pause in a
Memory Number” on Page 15).
Illustration
Illustration
Illustration
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13
USING PRIVACY
Hold down PRIVACY to talk to someone
else in the room without the person on the
other end of the phone line hearing your
conversation. You can still hear the per-
son on the other end of the phone line.
Release PRIVACY to resume your phone
conversation.
USING FLASH
FLASH provides the electronic equivalent
of a switchhook signal for special phone
services such as Call Waiting.
For example, if you have Call Waiting,
you can put your current call on hold and
answer a second call by pressing FLASH.
Press FLASH again to alternate between
the two calls.
Notes:
• The redial memory does not store the
FLASH entry or the digits you press
after FLASH.
• If you do not have any special phone
services, pressing FLASH might dis-
connect your current call.
USING TONE SERVICESON
A PULSE LINE
Some special phone services, such as
bank-by-phone, require tone signals. If
you have pulse service, you can still use
these special tone services.
1. Dial the service’s main number.
2. Press TONE/ at the point where
tone signals are required, then dial
the additional numbers. The phone
sends these numbers as tone signals.
3. The phone automatically resets to the
pulse mode when you hang up.
Illustration
Illustration
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14
MEMORY DIALING
You can store up to 10 numbers of up to
16 digits.
Notes:
• 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.
• When storing numbers for special
services (such as alternate long dis-
tance or bank-by-phone), store the
service’s main phone number in one
memory location and numbers for ad-
ditional information in other locations.
Storing a Number in Memory
1. With the TALK/LOW BATT. indicator
off, press MEMORY.
Note: If you do not press any button
on the keypad within about 10 sec-
onds, a buzz sounds and the phone
exits the number storing process.
Start again from Step 1.
2. Dial the number you want to store.
3. Press MEMORY again.
4. Press the memory location number
(0–9) where you want to store the
number. A long beep sounds, and the
phone number is stored in memory.
5. Pull out the memory index card at the
bottom of the base and write the
stored number next to the memory
location number. We recommend you
use a pencil in case you want to
change it later.
Notes:
• If you receive a call while you are
storing a number in memory, press
TALK/HANG UP to answer the call. Af-
ter the call, begin again at Step 1.
Illustration
Illustration
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15
• To change a number stored in mem-
ory, simply store a new number in that
memory location.
• To clear a memory location so no
number is stored there, press MEM-
ORY twice, then press the memory lo-
cation number. A long beep sounds,
and the number is cleared from mem-
ory.
If a buzz sounds, you did not suc-
cessfully clear the memory location.
Repeat the process.
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. To enter a 2-second
pause, press REDIAL/PAUSE at the appro-
priate point when you store a number. To
enter another 2-second pause, press RE-
DIAL/PAUSE again.
Dialing a Stored Number
Press TALK/HANG UP, and when you hear
a dial tone, press MEMORY then the mem-
ory location number. The phone dials the
stored number.
Chain Dialing Service Numbers
Note: If you use pulse dialing to dial the
service, be sure you have stored a tone
entry (TONE/ ) in another memory loca-
tion.
When you hear a dial tone, press MEMO-
RY and the memory location number for
the service’s main number. When the ser-
vice’s main number answers, press MEM-
ORY and the memory location numbers
for the additional information.
Testing Stored Emergency
Numbers
If you store an emergency service’s num-
ber (police department, fire department,
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.
Illustration
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TROUBLESHOOTING
We do not expect you to have any problems with your phone, but if you do, the following
suggestions might help. If you still have problems, take the phone to your local Ra-
dioShack store for assistance.
SYMPTOM SUGGESTION
Interference is severe. Move the remote keypad closer to the base.
Keep the base and remote keypad away from interfer-
ence sources such as computers, radio-controlled toys,
wireless microphones, wireless alarm systems, wireless
intercoms and room monitors, fluorescent lights, and
electrical appliances.
Turn off the interfering device.
Hang up and redial the number.
The range decreases. Fully extend the base’s antenna and raise it to a vertical
position.
Ensure the antenna is not touching a metal surface.
Recharge the remote keypad battery pack.
The volume level drops or
you hear unusual sounds
when someone picks up
another phone on the
same line.
Hang up the second phone.
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If the problem persists, disconnect the phone. If other phones on the same line work
properly, the fault is in this phone or its installation. If you cannot locate the problem,
take your phone to your local RadioShack store for assistance.
The phone does not work. Ensure POWER is set to ON.
Move the remote keypad closer to the base.
Fully extend the base’s antenna and raise it to a vertical
position.
Ensure the phone’s modular cord and the AC adapter
are correctly and securely connected.
Recharge the remote keypad’s battery pack. (If the bat-
tery power is too low, the TALK/LOW BATT. indicator
does not light.)
Reset the security access-protection code by placing
the remote keypad in the cradle with POWER set to ON,
disconnect AC power and then reconnect AC power.
SYMPTOM SUGGESTION
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CARE AND MAINTENANCE
Your RadioShack ET-548 25-Channel Cordless Headset Telephone is an example of
superior design and craftsmanship. The following suggestions will help you care for your
phone so you can enjoy it for years.
Keep the phone dry. If it gets wet, wipe it dry immediately. Liquids might
contain minerals that can corrode the electronic circuits.
Use and store the phone only in normal temperature environments. Tem-
perature extremes can shorten the life of electronic devices and distort or
melt plastic parts.
Handle the phone gently and carefully. Dropping it can damage circuit
boards and cases and can cause the phone to work improperly.
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 new. Do
not use harsh chemicals, cleaning solvents, or strong detergents to clean
your phone.
Modifying or tampering with the phone’s internal components can cause a malfunction
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 assis-
tance. If the trouble is harming the phone lines, the telephone company might ask you to
disconnect your phone until you have resolved the problem.
CLEANER
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REPLACING THE BATTERY
PACK
If you follow the instructions in “Connect-
ing and Charging the Battery Pack” on
Page 7, the battery pack should last
about a year. If the battery pack does not
hold a charge for more than 2 hours after
an overnight charge, replace the battery
pack with a new 3.6 volt, 300 milliamp
battery pack with a connector that fits the
connector pins in the battery pack com-
partment. You can order a replacement
battery pack (RSU-10450971) through
your local RadioShack store.
Install the new battery pack as described
below, then charge the battery pack for
about 15 hours before you use it the first
time (see “Connecting and Charging the
Battery Pack” on Page 7).
1. Use a Phillips screwdriver to remove
the screw on the battery compartment
cover on the remote keypad, then re-
move the cover.
Illustration
2. Gently pull on the battery connector
to disconnect it, then remove the bat-
tery pack.
3. Slide the battery pack’s connector
onto the connector pins inside the
battery compartment and put the bat-
tery pack into the compartment.
4. Replace the cover and secure it with
the screw.
Cautions:
• You must use a replacement battery
pack of the required size and type.
• Be careful not to short the battery
pack by touching it with conducting
materials, such as rings, bracelets,
and keys. The battery pack or con-
ductor might overheat and burn.
• Do not dispose of the battery pack in
a fire because it might explode.
• Do not open or mutilate the battery
pack.
Illustration
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20
Notes:
• If you have trouble replacing the bat-
tery pack, take the phone to your lo-
cal RadioShack store for assistance.
• To avoid losing numbers stored in
memory, try to install and begin
charging the new battery pack within
2 minutes of removing the old one.
Important: Your telephone contains a re-
chargeable nickel cadmium battery pack.
At the end of the battery pack’s useful life,
it must be recycled or disposed of proper-
ly. Contact your local, county, or state
hazardous waste management authori-
ties for information on recycling or dispos-
al programs in your area. Some options
that might be available are: municipal
curb-side collection, drop-off boxes at re-
tailers such as your local RadioShack
store, recycling collection centers, and
mail-back programs.
THE FCC WANTS YOU TO
KNOW
In the unlikely event that your phone
causes problems on the phone line, the
phone company can temporarily discon-
tinue your service. If this happens, the
phone company attempts to notify you in
advance. If advance notice is not practi-
cal, the phone company notifies you as
soon as possible and advises you of your
right to file a complaint with the FCC.
Also, the phone company can make
changes to its lines, equipment, opera-
tions, or procedures that could affect the
operation of this telephone. The tele-
phone company notifies you of these
changes in advance, so you can take the
necessary steps to prevent interruption of
your telephone service.
Your phone might cause TV or radio inter-
ference even when it is operating proper-
ly. To determine whether your phone is
causing the interference, turn off your
phone. If the interference goes away,
your phone is causing the interference.
Try to eliminate the interference by:
• Moving your phone away from the re-
ceiver
• Connecting your phone to an AC out-
let that is on a different electrical cir-
cuit from the receiver
• Contacting your local RadioShack
store for help
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