Radio Shack CT 503 User Manual

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Cat. No. 17-1112  
Owner’s Manual  
CT-503 Handheld Flip-Style  
Cellular Telephone  
with Headset Jack  
Please read before using this equipment.  
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Memory Dialing — lets you store up to 40 phone numbers  
(of up to 32 digits each) in memory and dial any of them by  
pressing one, two, or three buttons.  
Memory Scrolling — lets you rapidly search the memory lo-  
cations for a number you stored.  
Last Number Redial — lets you quickly redial the last num-  
ber you called.  
Scratchpad Memory — lets you temporarily store a number  
(even during a call), then easily dial it.  
Security Features — to prevent unauthorized phone use,  
you can lock the phone (so it cannot be used at all) or set it  
so calls can be placed only to numbers stored in memory lo-  
cations 01–10.  
Special Messaging Service Features — the phone is pre-  
programmed to work with special (subscription-only) messag-  
ing services offered by many cellular carriers, including  
calling line ID and voice mail notification.  
Automatic Answer — lets you set the phone to answer auto-  
matically after two rings (if you are using optional handsfree  
equipment, for example).  
Handsfree Feature — the phone is preprogrammed to work  
with most optional handsfree equipment.  
We recommend you record your phone’s Electronic Serial  
Number (ESN) here. The number is on the back of the hand-  
set under the battery.  
Serial Number _______________  
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TABLE OF CONTENTS  
A Look at Your Phone ....................................................... 6  
Reading the Display/Indicators .................................... 7  
Using the Battery ............................................................. 10  
Installing the Battery ................................................... 10  
Charging the Battery .................................................. 11  
Checking Battery Power ............................................. 12  
Replacing a Battery During a Call .............................. 13  
Important Battery Tips ................................................ 14  
Basic Operation ............................................................... 15  
Turning the Phone On/Off .......................................... 15  
Signal Strength/Service Area ..................................... 15  
Making a Call ............................................................. 16  
Answering a Call ........................................................ 18  
Adjusting the Volume ................................................. 19  
Making Emergency Calls ........................................... 20  
Redialing Numbers ..................................................... 21  
Displaying Numbers ................................................... 23  
Menu Functions ............................................................... 24  
Overview .................................................................... 24  
Using the Menu Functions ......................................... 27  
Using Memory .................................................................. 31  
Storing Speed Dial Numbers ...................................... 31  
One-Touch Dialing ...................................................... 32  
Speed Recall/Dialing .................................................. 32  
Memory Scrolling/Dialing ........................................... 33  
Changing a Number in Memory ................................. 34  
Clearing a Memory ..................................................... 34  
Using Scratchpad Memory ......................................... 35  
Memory Dialing Tips .................................................. 35  
Security Features ............................................................ 36  
Locking Your Phone ................................................... 36  
Using the Service Restriction ..................................... 39  
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Special Features .............................................................. 40  
Using the Messaging Functions ................................. 40  
Using the Call Timers ................................................. 42  
Selecting the Active Phone Number ........................... 45  
Setting the Cellular System Type ............................... 46  
Roaming ..................................................................... 49  
Using Cellular System PIN Dialing ............................. 49  
Using the Phone with Handsfree Equipment .............. 51  
Using a Headset ......................................................... 51  
Using Touch-Tone Services ........................................ 52  
Troubleshooting ............................................................... 54  
Safety Information ........................................................... 55  
Traffic Safety .............................................................. 55  
Operating Environment ............................................... 55  
Emergency Calls ........................................................ 56  
FCC Regulations ........................................................ 57  
Care and Maintenance ..................................................... 58  
Specifications .................................................................. 59  
Patent Information ...................................................... 59  
Display Message Glossary ............................................. 61  
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A LOOK AT YOUR PHONE  
1
2
3
4
5
6
7
Retractable Antenna  
1.  
Extend during a call for optimum performance.  
2. Earpiece  
Alphanumeric Display (Ten-Character LED)  
Displays the status indicators, phone number, memory  
location number, and message.  
3.  
4.  
Alphanumeric Keypad  
Enters call information or programs functions.  
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5. Function Keys  
RCL  
— Recalls a function or numbers stored in memory.  
CLR  
— Removes characters or clears functions.  
— Ends a call or exits the functions menu.  
END  
SND — Places or answers calls.  
VOL  
— Increases or decreases the ringer, earpiece, or  
headset volume levels.  
FCN  
— Selects functions.  
STO  
— Stores to memory or turns on functions.  
PWR  
— Turns the phone on and off.  
6. Headset Jack (side of phone)  
7. Flip Cover  
READING THE DISPLAY/INDICATORS  
Your phone’s display provides a full range of messages and  
special indicators to assist you with the phone’s operation.  
Since many of these messages contain more characters than  
your phone can display at one time, the phone displays most  
messages across more than one display. For example, the  
g
phone displays EMr CYCALLthen (within about 1 second)  
Onto indicate that the Emergency Call feature is turned on.  
Note: When referring to a displayed message, this manual in-  
g
cludes the entire message all together (such as EMr CY  
CALLOn).  
A few of your phone’s many indicators are briefly described  
on the following pages. For a complete listing of display mes-  
sages and indicators, see “Display Message Glossary” on  
Page 61.  
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Signal Strength Indicator  
Indicates the relative strength of the signal being received by  
your phone. See “Signal Strength/Service Area” on Page 15.  
Battery Charge Indicators  
Represent the current voltage level of the battery. See  
“Checking Battery Power” on Page 12.  
IU (In-Use) Indicator  
Flashes when a call is in progress.  
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NS (No Service) Indicator  
Flashes if the phone is beyond the range of the cellular ser-  
vice area, meaning calls cannot be made or received. See  
“Signal Strength/Service Area” on Page 15.  
RM (Roam) Indicator  
Flashes if the phone is accessing a service area outside of  
your home system (roaming). See “Roaming” on Page 49.  
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USING THE BATTERY  
Warning:  
A detached battery could cause property damage,  
injury, or burns if a metal object (such as a pen spring, bead-  
ed chain, or piece of jewelry) contacts the battery’s terminals  
and causes a short circuit. Be careful when placing a charged  
battery inside a coat pocket, purse, or other container that  
might contain metal objects.  
Caution:  
Batteries must be recycled or disposed of properly.  
(You can put them in the battery recycling box at your local  
RadioShack store.) They must not be disposed of in munici-  
pal waste.  
INSTALLING THE BATTERY  
Align Here  
Latch  
1. Place the battery flat against the back of the phone and  
align the top of the battery below the raised arrows.  
2. Slide the battery toward the top of the phone until it  
snaps into place.  
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To remove the battery, be sure the phone is turned off, then  
press the latch at the top of the battery and slide the battery  
toward the bottom of the phone until it stops. Then lift the bat-  
tery off the phone.  
Note: If you have an extra charged battery and the currently  
installed battery becomes low during a call, you can change  
the battery without ending the call or losing the connection.  
See “Replacing a Battery During a Call” on Page 13.  
CHARGING THE BATTERY  
The nickel metal hydride battery supplied with your telephone  
is shipped in a discharged state to extend the battery’s life. It  
must be fully charged before you can use your phone.  
We recommend that you charge a new battery overnight, but  
no longer than 24 hours, using the AC charger supplied with  
your phone. Recharging time varies based on the type of bat-  
tery and the amount of charge left in the battery. See “Rec-  
ommended Recharging Times” on Page 12.  
Follow these steps to charge the supplied (or any approved)  
battery using the charger supplied with your phone.  
1. Install the battery on the phone.  
2. Remove the charging jack cover on the bottom of the  
phone and insert the charger’s flat plug into the charging  
jack.  
Note: The plug fits into the jack only one way. If you  
have difficulty inserting the plug, turn it over and try  
again. Do not force it!  
3. Plug the charger’s power cord into a standard AC outlet.  
The battery charge indicator appears.  
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Notes:  
You can use the phone while it is charging, but charg-  
ing takes longer.  
For fastest charging, be sure the phone is turned off if  
you are not expecting a call.  
4. When the battery is fully charged, disconnect the charger  
from the AC outlet. Then press in the clips on the sides  
of the plug and pull it away from the phone to disconnect  
the charger. Replace the charging jack cover.  
Recommended Recharging Times  
Approximate  
Battery Type  
Charging Time  
(Hours)  
NiCd Slim  
21/2  
31/4  
51/4  
51/2  
NiCd Slim Extra Capacity  
NiMH High Capacity (supplied)  
NiCd Extra Capacity  
CHECKING BATTERY POWER  
The phone displays a graduated set of up to three battery lev-  
el indicators (  
) when it is turned on. The more indicators  
that appear, the higher the battery’s current charge level.  
12  
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To see a more detailed indication of the battery’s charge level  
FCN  
GHI  
at any time, press  
4 . The battery strength meter ap-  
pears on the display for about 5 seconds. Read this meter in  
the same way.  
When battery power becomes low, the phone displays Lo  
bAt and sounds a warning tone every few seconds. When  
power becomes too low for the phone to operate, it automati-  
cally turns off. Recharge the battery as soon as possible.  
Note: Rechargeable batteries last longer and perform better  
if occasionally allowed to fully discharge. You can do this by  
leaving the phone on until the phone automatically turns off or  
you can use the battery discharge feature of any approved  
accessory available for your phone. Do not try to discharge  
the battery by any other means.  
REPLACING A BATTERY  
DURING A CALL  
If you have an extra charged battery and the currently in-  
stalled battery becomes low during a call, follow these steps  
to change the battery without ending the call or losing the  
connection.  
1. Tell the other party on the line what you plan to do (tell  
them, for example, that they will hear some noise as you  
remove the battery and you will call back if for any rea-  
son you lose the connection).  
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2. Remove the battery, and within 3 seconds, install the  
fresh battery. Your call is still on the line.  
Note: If you do not complete Step 2 within 3 seconds,  
the call disconnects.  
IMPORTANT BATTERY TIPS  
• Use only the supplied charger and use only batteries  
designed for this phone.  
You can purchase additional standard or extended  
capacity batteries through your local RadioShack store.  
• When you are not using the charger, disconnect it from  
power. Do not leave the battery connected to the charger  
and AC power for more than 24 hours, since overcharg-  
ing could shorten the battery’s life.  
• When the battery is not in use, store it uncharged in a  
cool and dark place.  
• The battery is a sealed unit with no serviceable parts. Do  
not try to open the case.  
• For the best results, be sure the battery is at or near  
room temperature when you charge it.  
• A battery can be charged and discharged hundreds of  
times, but it eventually wears out. When the operating  
time (talk time and standby time) is noticeably shorter  
than normal, get a new battery and recycle or properly  
dispose of the old one.  
• Do not dispose of batteries in a fire.  
• Never use any charger or battery that is damaged or  
worn out.  
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BASIC OPERATION  
TURNING THE PHONE ON/OFF  
PWR  
To turn on the phone, flip open the cover then press  
. The  
phone performs a short self test and sounds a tone, the key-  
pad backlight turns on for about 17 seconds, and on ap-  
pears. The phone is ready to use when NS (no service)  
disappears (see “Signal Strength/Service Area”).  
Notes:  
• The keypad backlight turns on for about 15 seconds  
every time you press a key, then it turns off and all but  
the green signal strength indicator disappear from the  
display to conserve battery power. When the phone is  
locked (see “Locking Your Phone” on Page 36), how-  
ever, the phone’s display goes completely blank about  
15 seconds after you press the last key.  
• During battery charging, the keypad backlight does not  
turn off and the display does not change or go blank  
when the phone is turned on and unlocked.  
PWR  
To turn off the phone, press  
blank.  
again. The display goes  
SIGNAL STRENGTH/SERVICE AREA  
The phone always displays a green signal strength meter  
when it is turned on to indicate the strength of the cellular sig-  
nal currently being received. The more bars that appear on  
the meter, the stronger the signal.  
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Notes:  
• If few or no bars appear (meaning the signal strength is  
weak) and you want to make or receive a call, move the  
phone to a different location so the signal strength  
increases.  
• When all other display characters disappear to conserve  
battery power, the signal strength meter flashes and  
scrolls its bars.  
If NS(no service) appears on the upper left side of the dis-  
play, the phone is outside the cellular service area and you  
cannot make or receive calls until you reach an area with ser-  
vice your phone can use.  
MAKING A CALL  
1. Extend the antenna, flip open the cover, and be sure the  
phone is on (onand other indicators appear).  
2. Press the number keys to enter the phone number you  
want to dial (including the area code, if necessary). The  
numbers appear on the display as you press them.  
Notes:  
CLR  
If you make a mistake, repeatedly press  
to delete  
CLR  
one digit at a time, or hold down  
its.  
to delete all dig-  
The phone can display up to 10 characters at once. If  
you enter (or display a message containing) more  
than 10 characters, the characters automatically scroll  
RCL  
off the left side of the display. Press  
at any time to  
recall the overflow characters. See “Any Number  
Longer Than 10 Digits” on Page 23.  
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3. Press SND to call the phone number. IU(in use) flashes  
g
and diALin then the number called appear briefly,  
then onreappears.  
4. To end the call, press END.  
Note: Closing the cover does not end or disconnect the call.  
System Busy Message  
In addition to the normal busy signal you hear when a num-  
ber you call is busy, your phone sounds tones and displays  
these messages to indicate that it cannot complete a call.  
Tone  
You See  
Description  
Fast Busy  
The cellular system is  
busy.  
Snd to  
rEdiAL  
High/low  
The cellular system  
could not complete the  
call.  
Snd to  
rEdiAL  
When either of these conditions occur, you can press SND  
again to redial the number immediately (see “Using Automat-  
END  
ic Redial” on Page 22), or press  
again.  
then dial the number  
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ANSWERING A CALL  
When the phone receives an incoming call, it rings and CALL  
flashes on the display. To answer the call, press SND. To end  
END  
the call, press  
.
Notes:  
Your phone can receive calls even if the antenna is not  
extended. For optimum performance or if the signal  
strength becomes weak, however, extend the antenna.  
• If you subscribe to calling line ID service through your  
cellular carrier, you can view the calling party’s phone  
number on the phone’s display. See “Viewing/Recalling  
Messages” on Page 41.  
• If your phone receives a call but the signal strength is too  
weak to support it, CALLappears and the phone sounds  
a series of beeps. The caller hears the standard “cus-  
CLR  
tomer not available” message. If this happens, press  
to clear CALLfrom the display.  
Missed Call Message  
If your phone is on and receives a call, but you do not answer  
it, CALL appears on the display for about 15 seconds after  
the calling party hangs up. The next time you press any key  
CLR  
PWR  
END  
(except  
,
, or  
), CALLreappears for about 15 sec-  
onds to notify you that you missed a call.  
CLR  
END  
.
To clear CALLfrom the display, press  
or  
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ADJUSTING THE VOLUME  
Adjusting the Earpiece Volume  
To increase or decrease the earpiece volume during a call,  
VOL  
hold down  
. As you hold down the key, the volume in-  
creases or decreases (depending on the last adjustment you  
made) and the phone displays the volume meter for about 8  
seconds. The more bars that appear on the meter, the higher  
the volume.  
To adjust the volume in the other direction (if the volume is  
getting louder, for example, and you want it to be softer) re-  
VOL  
lease  
then hold it down again within 8 seconds.  
Adjusting the Ringer Volume  
To increase or decrease the ringer volume at any time, press  
FCN  
VOL  
then hold down  
until you hear the desired ring vol-  
ume. As you hold down the key, the phone sounds a gradual-  
ly louder or softer ring tone (depending on the last adjustment  
you made) and displays the volume meter for about 8 sec-  
onds. The more bars that appear on the meter, the louder the  
ringer sounds.  
To adjust the volume in the other direction (if the ring tone is  
getting louder, for example, and you want it to be softer) re-  
VOL  
lease  
then hold it down again within 8 seconds.  
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Using Mute  
To turn off the phone’s microphone during a call so the other  
party on the phone cannot hear you (so you can talk privately  
FCN  
with someone else in the room, for example), press  
MNO  
6
. MUtEappears.  
FCN  
MNO  
6
To turn the microphone on again, press  
again so  
MUtEdisappears.  
Hint: To help you remember which key to use, note that “M”  
MNO  
6
(for mute) appears on the  
key.  
Note: Pressing END to end a call also turns the microphone  
back on.  
MAKING EMERGENCY CALLS  
Your phone is preprogrammed to let you dial your local emer-  
gency number (such as 911) at the press of a single button,  
even if the phone is locked (see “Locking Your Phone” on  
Page 36). Before you can use this feature, however, you  
must first program the emergency number you want to use in  
memory location 01 of your phone. See “Storing Speed Dial  
Numbers” on Page 31.  
To place an emergency call once you have stored the emer-  
1
gency number, simply hold down  
for about 1 second.  
g
The phone displays EMr CYand dials the emergency num-  
ber.  
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Important Notes:  
• If you disabled the emergency display (see “Disabling  
the Emergency Display” on Page 29), the phone does  
g
not display EMr CY when you make emergency calls  
using the  
1 key.  
• When you make an emergency call, give your name and  
cellular phone number, as well as the location of the inci-  
dent. Remember that your phone might be the only  
means of communication at the accident scene. Do not  
end the call until you are advised you may do so.  
REDIALING NUMBERS  
Redialing the Last Number Called  
Your phone always stores the last phone number you called.  
To recall and redial this number, follow these steps.  
RCL  
OPER  
OPER  
1. Press  
0
0 . Memory location number 00and  
the most recent number called flashes on the display.  
2. To redial this number while it appears on the display,  
press SND.  
CLR  
To exit without redialing the number, hold down  
clear the display.  
to  
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Using Automatic Redial  
To automatically redial a number when you get the cellular  
system busy signal (when SndtorEdiALappears), press  
SND so rEdiAL appears. The phone automatically redials  
the number at regular intervals for up to 4 minutes or until the  
call goes through.  
If the call goes through, the phone rings once to alert you.  
Simply begin your conversation as usual when the other par-  
ty answers.  
If the call cannot be completed within 4 minutes (and Sndto  
rEdiALappears again), you can press SND again to repeat  
END  
the redial cycle or  
to end the call.  
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DISPLAYING NUMBERS  
Your Phone Number  
To display your phone number at any time (even while a call  
RCL  
#
is in progress), simply press  
.
Note  
: If you have two phone numbers programmed into your  
phone (see “Selecting the Active Phone Number” on  
RCL  
#
Page 45), pressing  
tive phone number.  
displays only the currently ac-  
Any Number Longer Than 10 Digits  
Your phone can dial and store numbers of up to 32 digits;  
however, the phone can display only 10 digits at once (usual-  
ly the last 10 digits of the number). To review the overflow  
RCL  
characters, press  
once. The phone displays the overflow  
digits (up to 10 digits at a time), then the last 10 digits reap-  
pear.  
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MENU FUNCTIONS  
OVERVIEW  
Turning a Function On/Off  
Follow these steps to access the functions menu and turn  
any of the phone’s functions on or off.  
Notes  
:
• All functions on your phone (except for the message  
reminder tone and emergency call) are preset to off (dis-  
abled).  
To exit without changing the setting during Steps 1 and  
END  
2, or before you press a key in Step 3, press  
.
FCN  
1
1. Press  
to access the functions menu. The first  
function’s name and status appear (such as OnEMIn  
tMrOFFfor “one-minute timer is off”).  
#
2. To select a different function, repeatedly press  
to  
scroll forward or to scroll backward through the  
menu until that function and its current status appear.  
STO  
3. Within 2 minutes, press  
to turn the selected function  
CLR  
on or  
to turn the function off.  
Note:  
A few seconds after you display the function name  
and status (Step 1 or 2), the phone alternately displays  
StO-On then CLr-OFF as a prompt to remind you  
about what key to press.  
4. To turn another function on/off, repeat Steps 2 and 3.  
The phone automatically exits the functions menu about  
2 minutes after you last press a key. To exit sooner,  
END  
press  
.
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Function Status Quick-Review  
Follow these steps to perform a quick-review of all functions  
currently enabled on your phone.  
Notes:  
• When you do a quick-review, your phone shows only  
those functions for which the default setting has been  
changed. Since the message reminder tone and emer-  
gency dialing functions have a default setting of “on”  
(enabled), they appear in a quick-review only if they  
have been disabled.  
• If your phone is set to use the home cellular system type  
(see “Setting the Cellular System Type” on Page 46,  
HOME appears as one of the settings during a quick-  
review.  
FCN  
RCL  
OPER  
WXY  
0
9
1. Press  
. The abbreviation for the first  
enabled function (such as OnEMIn tMr On for “one-  
minute timer is on”) appears on the display.  
Notes: See “Display Message Glossary” on Page 61 for  
a complete list of function abbreviations.  
#
2. Repeatedly press  
or  
to scroll forward or back-  
ward through all other enabled functions (if any).  
3. The phone automatically exits the quick-review about 8  
seconds after you last press a key. To exit sooner, press  
END  
.
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Functions List  
See  
Page  
Display Shows  
Function Description  
OnEMIn tMr  
Onor OFF  
Phone beeps once every  
minute during a call to remind  
you how long you have been  
on the phone  
27  
g
y
rin Er St LE Sets the phone to use one of  
27  
and a number  
nine different ringer styles  
from 19  
Auto AnSr  
Onor OFF  
Sets the phone to automati-  
cally answer after two rings  
28  
37  
Auto Lock  
Onor OFF  
Sets the phone to automati-  
cally lock when you turn  
power off  
g
EMr CY CALL Disables/enables the emer-  
29  
30  
Onor OFF  
gency dialing function  
g
rEMInd MS  
On or OF  
Sets the phone to alert you of  
messages received (with  
optional messaging services)  
SELEct LAn- (Function not available on this  
N/A  
50  
g g  
uA  
phone)  
Onor OFF  
Pin inActiv Sets the phone to automati-  
or Activ  
cally send a cellular PIN with  
the second press of the SND  
button  
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USING THE MENU FUNCTIONS  
Using the Call-Time Reminder Tone  
The call-time reminder function lets you set the phone to  
sound a subtle tone about 50 seconds after you place or an-  
swer a call, then once every minute after that, to remind you  
of how long you have been on the phone. Follow these steps  
to enable or disable the call-time reminder tone.  
FCN  
1
1. Press  
2. Press  
3. Press  
.
#
. OnEMIntMrOnor OFFappears.  
CLR  
STO  
so On appears (to enable) or  
so OFF  
appears (to disable).  
END  
4. Press  
to exit the function menu.  
Changing the Ringer Style  
Your phone has 9 different ringer styles for you to choose  
from (to help you distinguish your phone’s ring from that of  
another phone, for example). Follow these steps to change  
the ringer style.  
FCN  
1
1. Press  
.
#
2. Repeatedly press  
or  
until the phone displays  
g
y
rin Er St LE and a number from 19 (the last  
selected ringer style).  
STO  
3. Press  
. The phone sounds the currently selected  
ringer style, then it displays SELEct1–9.  
1
WXY  
9
4. Press the number keys (  
) on the phone’s key-  
pad to hear the various ringer styles (or repeatedly press  
#
or  
to scroll backward or forward and hear  
27  
each of them).  
17-1112.fm Page 28 Wednesday, July 21, 1999 2:34 PM  
5. When you hear the ringer style you want to use, press  
STO  
to select it. The phone displays ringEr n SEt  
(where nis the number of the ringer style you selected).  
END  
6. Press  
to exit the function menu.  
Using Automatic Answer  
The automatic answer function lets you set the phone to au-  
tomatically answer incoming calls without you having to press  
a key. When automatic answer is enabled and the phone re-  
ceives a call, it rings twice then automatically answers the  
call. Begin your conversation as usual.  
Follow these steps to turn the automatic answer function on  
or off.  
FCN  
1
1. Press  
.
#
2. Repeatedly press  
or  
until AutoAnSrOFFor  
Onappears.  
CLR  
STO  
3. Press  
so On appears (to enable) or  
so OFF  
appears (to disable).  
END  
4. Press  
to exit the function menu.  
Note: If automatic answer is enabled and you set the phone  
to use a ringer style such as number 6 (see “Changing the  
Ringer Style” on Page 27), which sounds four chirps per ring,  
remember that the phone answers only after two rings (two  
sets of four chirps, in this case).  
28  
17-1112.fm Page 29 Wednesday, July 21, 1999 2:34 PM  
Disabling the Emergency Display  
g
Your phone is preset to display EMr CY when you hold  
1
down  
to make an emergency call; however, you can set  
g
the phone so EMr CYdoes not appear (if you did not store  
an emergency number in memory 01, for example).  
Follow these steps to disable (or enable) the emergency dis-  
play.  
FCN  
1
1. Press  
.
g
#
2. Repeatedly press  
or  
until EMr CYCALLOn  
or OFFappears.  
CLR  
STO  
3. Press  
so OFF appears (to disable) or  
so On  
appears (to enable).  
END  
4. Press  
to exit the function menu.  
29  
17-1112.fm Page 30 Wednesday, July 21, 1999 2:34 PM  
Using Message Reminder Tones  
If your cellular carrier offers a special messaging service, and  
you subscribe to that service, your phone is preset to beep  
every 2 minutes until you read all new messages.  
Notes:  
• If you do not subscribe to a messaging service, the  
reminder tone function has no effect on your phone.  
To view the message data sent to your phone by your  
cellular carrier, see “Viewing/Recalling Messages” on  
Page 41.  
Follow these steps to disable or enable the message remind-  
er tones.  
FCN  
1
1. Press  
.
g
#
2. Repeatedly press  
or  
until rEMIndMS Onor  
OFFappears.  
CLR  
STO  
3. Press  
so OFF appears (to disable) or  
so On  
appears (to enable).  
END  
4. Press  
to exit the function menu.  
30  
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USING MEMORY  
Your phone has 40 speed-dial memory locations that can  
each hold a phone number of up to 32 digits.  
STORING SPEED DIAL NUMBERS  
Note:  
If you are unable to complete Steps 2 and 3 within 2  
minutes, the phone exits the procedure and its display goes  
STO  
END  
blank to conserve battery power. Press  
over at Step 2.  
, then start  
1. Clear the display (if necessary), enter the phone number  
STO  
you want to store, then press  
. The phone displays  
LocAtn(location) _ _.  
2. Within 2 minutes, enter the two-digit memory location  
number (01–40) where you want to store the phone  
number. The display confirms the memory location you  
have chosen.  
Notes:  
Remember that your phone uses memory location 01  
for one-touch emergency dialing. Store only your local  
emergency number (such as 911) in that location.  
If you enter an invalid number (such as 41), the phone  
displays invALid LocAtn, then LocAtn _ _  
reappears. Try again.  
3. If you previously stored information in the selected mem-  
ory location, or if the phone’s memory is full, the selected  
location number and FULL appear briefly, then the  
phone displays the currently stored number followed by  
g
ChAn E?.  
STO  
STO  
END  
To select a different memory location, press  
,
.
enter the new memory location number, then press  
31  
17-1112.fm Page 32 Wednesday, July 21, 1999 2:34 PM  
To use the selected memory location and replace the  
STO  
information currently stored there, press  
.
ONE-TOUCH DIALING  
To quickly place a call to any number stored in memory loca-  
SND  
tions 2 or 3 (without pressing  
number key for about 1 second.  
), simply hold down that  
SPEED RECALL/DIALING  
If you know the memory number you want to use, simply en-  
ter that number (such as 07), then press SND to quickly place  
the call.  
If you know the memory number you want to use, but you  
want to review the stored information (just to be sure!) before  
RCL  
you place the call, press  
then enter the memory location  
number. The location number and phone number flash on the  
SND  
display. To place the call, press  
.
32  
17-1112.fm Page 33 Wednesday, July 21, 1999 2:34 PM  
MEMORY SCROLLING/DIALING  
RCL  
1. Press  
.
OPER  
0
1
2. Press  
to start scrolling from the first memory  
location, or enter a specific memory number (such as 11)  
that you want to start from. The location number followed  
by (to indicate scrolling is active) and the stored phone  
number flash on the display.  
Note:  
If the memory location you selected is unused, the  
location number (03’, for example) appears steadily.  
#
3. Repeatedly press  
or  
to scroll forward or back-  
ward through the numbers.  
SND  
4. When you see the number you want to use, press  
to place the call.  
For convenience (so you can see if you have a caller’s phone  
number, for example), your phone lets you scroll through  
memory while a call is in progress. Simply follow these steps,  
END  
SND  
when you finish.  
but press  
instead of  
33  
17-1112.fm Page 34 Wednesday, July 21, 1999 2:34 PM  
CHANGING A NUMBER IN MEMORY  
1. Recall the number that you want to change.  
CLR  
2. Repeatedly press  
to backspace and erase digits,  
then enter the correct numbers; or simply add digits to  
STO  
the existing number. Then press  
digit location number.  
and enter the two-  
3. The selected location number and FULLappear briefly,  
then the phone displays the currently stored number fol-  
g
lowed by ChAn E?.  
STO  
Press  
again within 2 minutes to store the edited  
number. The memory location number appears on the  
display to confirm the entry.  
END  
To exit without changing the number, press  
.
CLEARING A MEMORY  
CLR  
STO  
1. Press  
, then enter the two-digit memory location  
number you want to clear.  
2. The selected location number and FULLappear briefly,  
then the phone displays the currently stored number fol-  
g
lowed by ChAn E?.  
STO  
To clear the selected memory, press  
. The selected  
memory location number appears on the display to con-  
firm the entry.  
END  
To exit without clearing the selected memory, press  
.
34  
17-1112.fm Page 35 Wednesday, July 21, 1999 2:34 PM  
USING SCRATCHPAD MEMORY  
Your phone’s scratchpad memory lets you temporarily store a  
telephone number on the display during a call. This is handy,  
for example, when someone gives you a number during a call  
and you don’t have a place to write it down.  
To store a number in the scratchpad memory during a call,  
simply press the keys to enter that number. After you press  
END  
to end the call, you can press SND to immediately dial  
the scratchpad memory number.  
Note  
: Be sure to tell the other party on the call that they will  
hear tones as you press the keys to enter the number.  
MEMORY DIALING TIPS  
Frequently Dialed Area Codes/Prefixes  
To reduce the number of keystrokes you use to dial frequent-  
ly called area codes and/or prefixes, store that area code  
and/or prefix (including the 1, if necessary) in memory. To  
dial a number using that memory, simply recall that memory,  
enter the remaining digits of the telephone number you are  
calling, then press SND to place the call.  
Banking or Other Phone Services  
For convenience, you can store in your phone’s memory the  
touch-tone command sequences you use when calling your  
bank or other phone services. See “Using Touch-Tone Ser-  
vices” on Page 52.  
35  
17-1112.fm Page 36 Wednesday, July 21, 1999 2:34 PM  
SECURITY FEATURES  
LOCKING YOUR PHONE  
To prevent unauthorized use of your phone, you can enter a  
three-digit code to lock your phone at any time (see “Using  
Manual Lock”). For added convenience, you can also set the  
phone to automatically lock every time you turn it off (see  
“Using Automatic Lock” on Page 37).  
When the phone is locked, Locdappears when you press  
PWR  
any key (except  
). When the phone is locked and re-  
ceives a call, it rings as usual. To answer the call, you must  
enter the lock code and then press SND.  
Your phone’s preset lock code is 123  
. For added security,  
you can change the code to one that you can easily remem-  
ber. See “Changing the Lock Code” on Page 37.  
Note  
: If you lock your phone then forget the lock code, you  
can enter a six-digit security code to display the lock code.  
See “Displaying the Lock Code” on Page 38.  
Using Manual Lock  
Follow these steps to lock your phone at any time.  
FCN  
JKL  
5
1. Press  
, then hold down  
. The phone displays  
Loc?.  
STO  
2. Press  
play.  
within 8 seconds. Locdappears on the dis-  
END  
To exit without locking the phone, press  
.
STO  
Note  
: If you do not press  
within 8 seconds, your  
phone automatically exits the lock program without lock-  
ing the phone.  
36  
17-1112.fm Page 37 Wednesday, July 21, 1999 2:34 PM  
The phone remains locked until you unlock it. To unlock your  
phone, simply enter the three-digit lock code. If you make a  
CLR  
mistake, press  
then try again.  
Using Automatic Lock  
The automatic lock feature lets you set your phone to auto-  
matically lock each time you turn it on. When automatic lock  
is enabled, Locdappears after the self test when you turn  
on the phone. You can unlock the phone as usual at anytime.  
Follow these steps to enable or disable automatic lock.  
FCN  
1
1. Press  
.
#
2. Repeatedly press  
or  
until the phone displays  
AutoLockOnor OFF.  
CLR  
STO  
3. Press  
so On appears (to enable) or  
so OFF  
appears (to disable).  
END  
4. To exit the function menu, press  
.
Changing the Lock Code  
For added security, you can change the lock code, but you  
must enter a preset 6-digit security code first. Your phone’s  
preset security code is 000000 (you cannot change this  
code).  
Follow these steps to change your phone’s lock code.  
Note: The phone’s display does not change (no characters  
STO  
appear when you press the keys) until you press  
4.  
in Step  
FCN  
OPER  
0
1. Press  
.
37  
17-1112.fm Page 38 Wednesday, July 21, 1999 2:34 PM  
2. Enter the six-digit security code.  
3. Enter the new three-digit lock code you want to use.  
g
STO  
4. Press  
. The phone displays ChAn Ed to and the  
new lock code.  
CLR  
5. When you finish, hold down  
for about 1 second to  
clear the lock code from the display.  
Displaying the Lock Code  
If you change your lock code then forget it, you can use your  
phone’s preset security code (000000) to display the current  
lock code.  
Follow these steps to display the current lock code.  
Note: The phone’s display does not change (no characters  
RCL  
appear when you press the keys) until you press  
3.  
in Step  
FCN  
OPER  
0
1. Press  
.
2. Enter the six-digit security code.  
RCL  
3. Press  
. The phone displays LocCodeand the cur-  
rently set three-digit lock code.  
CLR  
4. When you finish, hold down  
for about 1 second to  
clear the lock code from the display.  
38  
17-1112.fm Page 39 Wednesday, July 21, 1999 2:34 PM  
USING THE SERVICE RESTRICTION  
Your phone is preset to let you (or anyone else) dial any type  
of number (local or long distance) and freely access any in-  
formation stored in its memory. To prevent unauthorized use  
of your phone, however, you can enter your phone’s preset  
000000  
security code (  
) and set this service restriction.  
Service  
Level  
Description  
1
4
Calls can be placed only to numbers  
stored in memory locations 01–10 by  
RCL  
pressing  
, the memory number, then  
SND  
. Otherwise, the keypad is locked. The  
memory cannot be changed.  
No restrictions (default setting).  
Note  
: Your phone is preset to service level 4.  
Follow these steps to change the service restriction level on  
your phone.  
FCN  
OPER  
0
1. Press  
.
2. Enter the six-digit security code.  
3. Enter the service level (1 or 4) you want to use.  
STO  
4. Press  
. The phone displays SErvicE LEvEL n,  
where nis the service level number you entered (such  
as SErvicELEvEL4).  
39  
17-1112.fm Page 40 Wednesday, July 21, 1999 2:34 PM  
SPECIAL FEATURES  
USING THE MESSAGING FUNCTIONS  
Some cellular systems provide services that can send calling  
line ID and voice mail notification to your phone. Your phone  
is preprogrammed to work with these services.  
Note:  
In order to use these functions on your phone, your  
cellular carrier must provide, and you must subscribe to,  
these services. Otherwise, selecting or setting them will have  
no effect. For more information about these services, call  
your cellular carrier.  
Overview/Receiving Messages  
When your phone is turned on and receives calling line ID or  
voice mail notification data from your cellular carrier, it alter-  
nately displays:  
You See  
Meaning  
xx nEW  
Number (xx) of new messages received  
YY totAL  
Total number (YY) of messages currently  
stored in the message stack  
Your phone stores each message in a special memory area  
called the “message stack.” The message stack can hold up  
to 20 messages at once, with messages stored in order from  
newest (memory position 1) to oldest (memory position 20).  
40  
17-1112.fm Page 41 Wednesday, July 21, 1999 2:34 PM  
Notes:  
• If the message stack is full (20 messages are currently  
stored) and the phone receives a new message, it auto-  
matically stores the new message and deletes the oldest  
message in the stack.  
• Your phone does not receive messages while it is turned  
off. Contact your cellular carrier to find out how the car-  
rier handles undeliverable/queued messages.  
Viewing/Recalling Messages  
Follow these steps to view or recall a message.  
RCL  
1. Press and release  
, then hold it down for about 1  
second. The phone displays the first (newest) message  
in the stack.  
If the message is a calling line ID message, the phone  
briefly displays cIdyy(where yy is the message num-  
ber) then the number of the party that called (up to 14  
characters).  
If the message is voice mail notification, the phone dis-  
plays the message data (such as a message number  
and/or number of total/new messages waiting) sent by  
your cellular carrier. The type and format of the message  
waiting information sent varies by carrier — contact your  
cellular carrier for more information.  
Note: If there are no messages in the stack, the phone  
g
displays noMS S for about 8 seconds then exits the  
CLR  
message display. To exit sooner, press  
.
41  
17-1112.fm Page 42 Wednesday, July 21, 1999 2:34 PM  
2. To view another message, repeatedly press  
(to  
#
scroll backwards) or  
message appears.  
(to scroll forwards) until that  
END  
3. When you finish, press  
tion.  
to exit the message func-  
Deleting Messages  
To delete an individual message, recall that message, then  
CLR  
hold down  
until the phone displays dELEtEd.  
To delete all messages in the stack, while viewing any mes-  
CLR  
sage, hold down  
until the phone displays dELEtEd  
CLR  
(briefly) then ErASEALL. Then press  
again to confirm  
the deletion.  
END  
When you finish, press  
to exit the message function.  
USING THE CALL TIMERS  
Your phone has three call timers that let you check the length  
of your calls (“air time”):  
Individual call timer — times each call you make or  
answer in minutes and seconds, and automatically  
resets each time you make or answer a call or turn off  
the phone. See “Displaying the Individual Call Timer” on  
Page 43.  
Resettable call timer — times all the calls you make or  
answer in minutes, and it can be reset at any time. See  
“Using the Resettable Call Timer” on Page 44.  
42  
17-1112.fm Page 43 Wednesday, July 21, 1999 2:34 PM  
Cumulative call timer — times the calls you make or  
answer in minutes, and it cannot be reset. See “Display-  
ing the Cumulative Call Timer” on Page 44.  
Notes:  
• Each call timer begins counting when you hear the first  
ring (during an outgoing call) or when your phone rings  
to signal an incoming call.  
• If your phone receives a call but you do not answer it,  
each timer resets to the time it had before it received that  
incoming call.  
Displaying the Individual Call Timer  
The individual call timer tracks each call you make in minutes  
and seconds, and automatically resets each time you make  
or answer a call or when you turn off the phone.  
RCL  
To display the individual call timer for the last call, press  
#
#
. The air time of your last call (such as 0045 to  
show 45 seconds) appears for about 15 seconds. Press any  
key to clear the display sooner.  
RCL  
#
#
If you press  
during a call, the air time of the  
call flashes on the display until you clear the display or end  
the call.  
43  
17-1112.fm Page 44 Wednesday, July 21, 1999 2:34 PM  
Using the Resettable Call Timer  
The resettable call timer tracks the calls you make or answer  
in minutes, and it can be reset at any time. You can reset this  
timer to coincide with your cellular billing statement date, for  
example, then track your monthly air time.  
RCL  
#
#
To display the resettable call timer, press  
#
. rESEtbL(resettable) and the number of air time min-  
utes accumulated since you last reset the timer appear.  
FCN  
OPER  
PRS  
0
7
To reset the timer while it is displayed, press  
CLR  
.
To clear the timer from the display, press any key other than  
#
.
Displaying the Cumulative Call Timer  
The cumulative call timer tracks all the calls you make or an-  
swer in minutes. It cannot be reset.  
RCL  
#
#
To display the cumulative call timer, press  
,
#
#
. CUMULand the number of air time minutes accu-  
mulated since the first call was made or answered on your  
phone appears. Press any key to clear the timer from the dis-  
play.  
44  
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SELECTING THE ACTIVE PHONE  
NUMBER  
If you subscribe to two cellular services (for example, com-  
petitive cellular systems in your area or cellular systems in  
different cities), your dealer programs your phone with two  
different phone numbers.  
If you have two phone numbers programmed into your  
phone, the phone displays one of the following messages  
each time you turn it on, to indicate which cellular system  
type and phone number are currently active.  
Phone  
Number  
Cellular System Type  
Display Shows  
1
2
1
2
Non-wireline (type A)  
Non-wireline (type A)  
Wireline (type B)  
A1  
A2  
b1  
b2  
Wireline (type B)  
Note  
: To set the cellular system type, see “Selecting the Cel-  
lular System Type” on Page 48.  
To deactivate the phone number currently selected and acti-  
RCL  
STO  
#
vate the other phone number, press  
. The dis-  
play briefly blanks, then the currently active number appears  
to confirm your selection. To clear the display when you fin-  
CLR  
ish, press  
.
45  
17-1112.fm Page 46 Wednesday, July 21, 1999 2:34 PM  
Notes:  
• Calls can be made on your phone from only one phone  
number at a time, and you cannot activate the other  
phone number while a call is in progress.  
To receive calls on both numbers at the same time (if you  
subscribe to no-answer transfer or call forwarding ser-  
vice through your cellular carrier), you can set both num-  
bers to forward to the other number if not answered.  
Otherwise, a caller who calls the inactive number  
receives the standard “not in service” message.  
SETTING THE CELLULAR  
SYSTEM TYPE  
Each cellular market area has two cellular service providers.  
One of the providers is designated Provider A and the other  
Provider B. When your phone is activated for service, find out  
from your dealer whether your cellular provider is type A or B.  
Notes:  
• Usually, it is less expensive to use the same company for  
cellular service when you are in your home city and  
when you roam (see “Roaming” on Page 49). To do this,  
you need to know whether your cellular service provider  
is type A or B in your home city and in each city where  
you plan to travel.  
• It is possible for a cellular service provider to be (or have  
agreements with) Provider A in some cities and Provider  
B in others.  
46  
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Your phone’s selectable system registration function lets you  
select one of seven possible roaming modes:  
Roaming Mode Description  
— the phone first seeks a home type  
Display  
Standard Mode  
system, then it seeks a non-home type.  
If you are using a type A (non-wireline) home system  
Std Ab  
Std bA  
If you are using a type B (wireline) home system  
— the phone first seeks a  
Invert Preference Mode  
non-home type system, then it seeks a home type.  
(Select this setting while on the fringe of your home  
area or in certain roaming situations.)  
If your home system is non-wireline (type A):  
SCAn  
bA  
flashes rapidly — call on system B  
flashes slowly — call on home type system  
flashes slowly — call on home system  
RM  
RM  
IU  
If your home system is wireline (type B):  
SCAn  
Ab  
flashes rapidly — call on system A  
flashes slowly — call on home type system  
flashes slowly — call on home system  
RM  
RM  
IU  
— the phone will not operate out-  
side your home system.  
Home Only Mode  
HOME  
— the phone will operate only within  
non-wireline (A) systems.  
Scan A Mode  
SCAn A  
SCAn b  
P SCAn  
— the phone will operate only within  
wireline (B) systems.  
Scan B Mode  
— the phone automatically scans for one  
SID Mode  
or more preferred systems to use  
one or more  
and  
systems  
to use. System IDs must be prepro-  
not  
grammed by dealer; preferred system (SID) feature  
requires special service (contact your cellular car-  
rier).  
47  
17-1112.fm Page 48 Wednesday, July 21, 1999 2:34 PM  
Displaying the Currently Selected  
System Type  
To display the system type currently selected on your phone,  
RCL  
press  
. The currently selected system type (such as  
HOME) appears for about 8 seconds. To clear the display  
END  
sooner, press  
.
Selecting the Cellular System Type  
Note: If you are unable to complete Steps 2 and 3 within 8  
seconds, the display clears without changing the system  
type. Start at Step 1 and try again.  
RCL  
1. Press  
. The currently selected system type  
appears.  
#
2. Repeatedly press  
type you want to use.  
or  
until you see the system  
STO  
3. Press  
to store the displayed system type. SEt  
appears to confirm the change.  
END  
To exit without changing the system type, press  
.
48  
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ROAMING  
In some areas, the cellular system’s computer automatically  
recognizes roaming telephones. In other areas, you must  
contact the service provider before it can recognize your  
phone. The operator needs to know your telephone number,  
your phone’s ESN (Electronic Serial Number), and how you  
plan to pay for your calls. There is normally an additional  
charge for roaming calls.  
Note  
: Your phone’s ESN is under the phone’s battery; how-  
ever, the roaming cellular service provider can usually auto-  
matically determine your phone’s ESN when you call.  
When you roam, RMflashes slowly on the display when the  
phone is using a home-type cellular system. The indicator  
flashes rapidly when the phone is using a cellular system that  
is different from your home system.  
USING CELLULAR SYSTEM  
PIN DIALING  
Your cellular carrier might require that you use a personal  
identification number (PIN) when you make calls. This num-  
ber assures the cellular system that the person placing the  
call is an authorized user.  
Contact your cellular service provider to determine if a PIN is  
required and obtain the PIN (seven digits or less) to place  
calls through the cellular system you subscribe to. If a PIN is  
required, follow the steps in “Storing Speed Dial Numbers” on  
Page 31 to store your PIN in memory 07, then follow the  
steps in “Enabling/Disabling PIN Dialing” on Page 50 to en-  
able PIN dialing on your phone.  
49  
17-1112.fm Page 50 Wednesday, July 21, 1999 2:34 PM  
Notes:  
• Enable PIN dialing on your phone only if it is required by  
your cellular provider.  
You must store your PIN in memory 07, otherwise your  
phone cannot properly make calls through your cellular  
system.  
• If you enter a service area which does not require PIN  
dialing, disable PIN dialing on your phone.  
Enabling/Disabling PIN Dialing  
FCN  
1. Press  
1 .  
#
2. Repeatedly press  
or  
until the phone displays  
PininActivor ActivE.  
CLR  
STO  
3. Press  
so ActivE appears (to enable) or  
so  
inActivappears (to disable).  
END  
4. To exit the function menu, press  
.
Making a Call Using Your PIN  
1. With PIN dialing enabled, dial or speed dial the number  
you want to call, as usual, then press SND.  
2. When you hear the tones (2 beeps), press SND again.  
The phone automatically sends your PIN code to finish  
dialing the call.  
Note: If you did not store your PIN in memory 07, or you  
stored an incorrect PIN, invALid Pin appears. Be sure  
your PIN is correct, then try again.  
50  
17-1112.fm Page 51 Wednesday, July 21, 1999 2:34 PM  
USING THE PHONE WITH HANDSFREE  
EQUIPMENT  
Your phone is preprogrammed to work with most optional  
handsfree equipment in your vehicle that lets you automati-  
cally switch from handset to handsfree mode when you place  
the phone in the handsfree holder.  
Some handsfree equipment might require you to turn off  
(mute) the phone’s microphone when switching to handsfree,  
using the procedure described in “Using Mute” on Page 20.  
See the owner’s manual provided with your handsfree equip-  
ment for more information, or contact your local RadioShack  
store for assistance.  
USING A HEADSET  
You can make or answer calls with handsfree convenience  
using an optional headset that has a 3/32-inch (2.5 mm) plug.  
We recommend RadioShack Cat. No. 43-194.  
To connect the headset, insert the headset’s plug into the  
headset jack on the side of the phone.  
With a headset connected, you make calls as usual. You can  
answer a call simply by pressing any number key (09),  
,
SND  
VOL  
or  
.
Notes:  
• The headset’s earpiece and microphone must be used  
when the headset is connected. Connecting a headset  
disconnects the phone’s earpiece and microphone.  
51  
17-1112.fm Page 52 Wednesday, July 21, 1999 2:34 PM  
You can connect or disconnect the headset without  
affecting a call in progress.  
VOL  
also controls the connected headset’s volume (see  
“Adjusting the Volume” on Page 19).  
USING TOUCH-TONE SERVICES  
To use your cellular phone to control answering machines  
and special telephone services (such as bank-by-phone or  
voicemail), simply enter touch-tone commands using your  
phone’s keypad after the service answers (and when prompt-  
ed).  
Or, you can store the service’s command sequence in a  
memory location, then follow these steps after the service an-  
swers (for each sequence you want to send).  
1. Recall the memory location that contains the command  
sequence.  
RCL  
SND  
2. Press  
.
Adding a Pause  
Some services, such as voicemail, require you to enter an ac-  
cess code then wait before entering additional digits. To in-  
clude one or more pauses in a sequence when storing it in  
FCN  
STO  
o
SND  
memory, press  
so appears, then press  
. The  
o
phone displays wherever you insert a pause.  
STO  
Note  
: If you do not press  
within 8 seconds, the display  
clears to conserve battery power. If this happens, simply  
press the key for the next digit you want to enter or store. The  
characters you previously entered appear along with the  
pause you just entered.  
52  
17-1112.fm Page 53 Wednesday, July 21, 1999 2:34 PM  
When you send a sequence with pauses stored in it, the  
phone stops at each place in the sequence where you en-  
tered a pause. To send the next group of numbers in the se-  
quence, press SND again.  
53  
17-1112.fm Page 54 Wednesday, July 21, 1999 2:34 PM  
TROUBLESHOOTING  
If the phone’s power does not come on or stay on:  
• Make sure the battery is properly installed and charged.  
• Be sure the contacts on the battery are clean, If they are  
not, clean them with a soft cloth or pencil eraser.  
• The battery charge might be too low for operation. Check  
the display and listen for the low battery warning tones.  
If the power comes on, but the phone does not work:  
• Make sure that the antenna is fully extended.  
• Be sure you selected the correct cellular system type  
(see “Setting the Cellular System Type” on Page 46).  
• Make sure that functions you might have previously  
selected (but forgotten) are not causing the phone to  
operate differently than you expect it to (see “Function  
Status Quick-Review” on Page 25).  
• Check the display for error messages.  
If you see an error message that is not covered in any section  
in this Owner’s Manual, or if your phone does not seem to be  
operating properly, contact your local RadioShack store for  
assistance.  
54  
17-1112.fm Page 55 Wednesday, July 21, 1999 2:34 PM  
SAFETY INFORMATION  
TRAFFIC SAFETY  
• Do not use a handheld phone while driving a vehicle. If  
using a handheld phone, park the vehicle before taking  
or making a call.  
• Always secure the phone in its holder; do not place the  
phone on the passenger seat or where it can break loose  
in a collision or sudden stop.  
• Never install a phone alert device that operates your  
vehicle’s lights or horn. This is illegal in most areas.  
Remember, always put road safety first!  
OPERATING ENVIRONMENT  
• Remember to follow all special regulations and always  
turn off your phone whenever you are required to do so,  
or when it might cause interference or be dangerous.  
• Any radio transmitting equipment, including cellular  
phones, might interfere with inadequately protected  
medical devices. Consult a physician or the manufac-  
turer of the medical device if you have any questions.  
Other electronic equipment might also be subject to  
interference.  
• As with other mobile radio transmitting equipment, for  
your safety, only use your phone in the normal operating  
position (held to your ear with the antenna pointing over  
your shoulder).  
• Turn off the phone while getting gasoline (at a filling sta-  
tion). Observe restrictions on the use of radio equipment  
in fuel depots (fuel storage and distribution areas),  
chemical plants, or around blasting operations.  
55  
17-1112.fm Page 56 Wednesday, July 21, 1999 2:34 PM  
• Do not store or carry flammable liquids, gases, or explo-  
sive materials in the same compartment as a cellular  
phone or any of its parts or accessories.  
• Only qualified personnel should install or service the  
phone in a vehicle. Faulty installation or service might be  
dangerous and could invalidate the phone’s warranty.  
• Electronic fuel injection systems, electronic anti-lock  
braking systems, electronic cruise control systems, and  
other electronic systems can malfunction due to the lack  
of protection from radio signals. Check regularly that all  
cellular phone equipment in your vehicle is mounted and  
operating properly.  
• Turn off your cellular phone when in an aircraft. The use  
of cellular phones in an aircraft might be dangerous to  
the operation of the aircraft, disrupt cellular networks,  
and is illegal.  
Failure to observe these instructions could lead to suspen-  
sion or denial of cellular telephone services, legal action, or  
both.  
EMERGENCY CALLS  
IMPORTANT!  
This phone, like any cellular phone, operates  
using radio signals, cellular, and land-line networks, as well  
as user-programmed functions. These factors make it impos-  
sible to guarantee connection in all conditions. Therefore, you  
should never rely solely upon any cellular phone for essential  
communications (such as medical emergencies).  
Remember, to make or receive any calls, the phone must be  
turned on and in a service area with adequate cellular signal  
strength.  
56  
17-1112.fm Page 57 Wednesday, July 21, 1999 2:34 PM  
You might not be able to make emergency calls on all cellular  
phone networks or when certain network services or phone  
features are set. Check with your local service providers.  
FCC REGULATIONS  
A cellular phone might cause TV or radio interference, even  
when it is operating properly. The FCC can require you to  
stop using your cellular phone if you cannot eliminate the in-  
terference. If you need assistance, contact your local Ra-  
dioShack store.  
This device complies with Part 15 of the FCC Rules. Opera-  
tion is subject to the condition that this device does not cause  
harmful interference.  
57  
17-1112.fm Page 58 Wednesday, July 21, 1999 2:34 PM  
CARE AND MAINTENANCE  
Your RadioShack CT-503 Handheld Flip-Style Cellular Tele-  
phone with Headset Jack 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 and all of its parts and accessories out  
of the reach of children.  
• Keep the phone dry. Liquids might contain minerals that  
corrode electronic circuits.  
• Do not use or store the phone in dusty, dirty areas. its  
moving parts can be damaged.  
• Do not store the phone in hot areas. Temperature  
extremes can shorten the life of electronic devices, dam-  
age batteries, and warp or melt plastic parts.  
• Do not store the phone in cold areas. When the phone  
warms up (to its normal operating temperature), mois-  
ture can form inside the phone, which could damage the  
phone’s electronic circuits.  
• Do not drop, knock, or shake the phone. Rough handling  
can break internal circuit boards.  
• Wipe the phone with a damp cloth occasionally to keep it  
looking new. Do not use harsh chemicals, cleaning sol-  
vents, or strong detergents to clean your phone.  
Modifying or tampering with the phone’s internal components  
can cause a malfunction and invalidate your phone’s warran-  
ty and void your FCC authorization to operate it. If your  
phone is not performing as it should, take it to your local Ra-  
dioShack store for assistance.  
58  
17-1112.fm Page 59 Wednesday, July 21, 1999 2:34 PM  
SPECIFICATIONS  
Dimensions ....................................... 55/8 × 23/8 × 11/2 Inches  
Weight (with Supplied Battery) .................................... 9.6 oz  
(272 g)  
Transmitting Power .................................. 0.6W + 2dB – 4dB  
Operating Voltage .............................................. µ5.2–7.5 DC  
Internal Battery ......................................................... 6.0V DC  
Input to AC Charger ................................................ 120V AC  
Frequency Band ..................................... 824–849 MHz (TX)  
869–894 MHz (RX)  
Specifications are typical; individual units might vary. Specifi-  
cations are subject to change and improvement without no-  
tice.  
PATENT INFORMATION  
This phone is manufactured under one or more of the follow-  
ing U.S. patents.  
4121218  
4124879  
4127824  
4128740  
4138681  
4193036  
4254382  
4302845  
4312074  
4327319  
4329666  
4369516  
4369522  
4378603  
4390963  
D269873  
4389265  
4400584  
4617520  
D286778  
4626309  
4628529  
4629829  
4630304  
4630305  
4633141  
4636593  
4636741  
D288432  
4648125  
4649543  
D288683  
4654655  
D289156  
4662691  
4667333  
D295975  
4751737  
D296187  
4761621  
4764737  
D297734  
D297735  
4777564  
Re32768  
D299136  
4797929  
4798975  
4800348  
4802236  
4809356  
4811377  
4811404  
4827226  
4965537  
4972355  
4972432  
4972455  
4975808  
4984290  
D314173  
D315330  
D315346  
D315543  
D315559  
D315565  
5004992  
D315907  
5008925  
D316417  
D316859  
5017856  
D327061  
5128834  
D328302  
5142551  
5142696  
5146620  
5148471  
5148473  
5148961  
5150359  
5150384  
5152006  
5157693  
5163159  
5164652  
5166596  
5175759  
5175874  
5261119  
5262710  
5263052  
5276707  
5278994  
D343173  
5280637  
D344087  
5287553  
5287555  
5287556  
D344511  
5301365  
5321847  
D348880  
5349588  
5359696  
5361400  
59  
17-1112.fm Page 60 Wednesday, July 21, 1999 2:34 PM  
4400585  
D270835  
D271491  
Re31470  
4431977  
4434461  
4455534  
4462098  
D275951  
4484153  
4485486  
4486624  
D276809  
4491972  
D277667  
4504834  
D278708  
4523155  
4546329  
4550426  
4551696  
4564821  
D282169  
4571595  
4573017  
4574243  
4585957  
4602218  
D284759  
D285439  
4616314  
4668917  
4670747  
4672502  
4680787  
4681476  
4683585  
4692726  
4704588  
D292578  
4706036  
D292920  
4710724  
4711361  
4715063  
4716319  
4716391  
4723305  
D294257  
4727306  
4727583  
4730195  
4734635  
4736277  
4737976  
4740794  
4741018  
4741034  
4742562  
D295627  
4746242  
D295973  
4827507  
4829274  
4837534  
D301476  
4843621  
4845772  
D302015  
4851966  
4868576  
4870686  
D303656  
4876552  
4879533  
D305427  
4896124  
4897873  
D305717  
4904549  
4905288  
4905301  
D306293  
D306441  
D306594  
4912602  
4918732  
4922178  
4945570  
4954796  
4959851  
4963812  
4963843  
5018188  
5020091  
5020092  
5020093  
5028083  
5028859  
5029044  
5029233  
5031028  
5036532  
5053924  
5057762  
D320780  
5059885  
5060294  
D322783  
D322955  
5081674  
5083304  
D324024  
D324388  
5095503  
D325028  
D325583  
5109536  
D325915  
5113436  
5117450  
5121047  
5122480  
5122722  
D332261  
5182749  
D332785  
5185566  
5187809  
5193223  
5195106  
5195108  
5201069  
5204977  
5210793  
5214675  
5222104  
5222251  
D337332  
5230007  
5230093  
5233633  
5235492  
5237257  
5239127  
5241545  
5241548  
5241650  
5241693  
5242767  
D339582  
5249302  
5251331  
D340710  
5260988  
5363071  
5365549  
D352497  
5366826  
5375143  
5375258  
5379324  
D354055  
D354062  
5384825  
D356084  
5402447  
5406146  
5406562  
D357224  
D357457  
5410741  
D357680  
D357681  
5428836  
D359734  
D359735  
D359959  
5432017  
D360632  
5438684  
60  
17-1112.fm Page 61 Wednesday, July 21, 1999 2:34 PM  
DISPLAY MESSAGE GLOSSARY  
Message  
Description  
See  
Page(s)  
(Apostrophe) Memory scrolling  
active  
33  
o
Shows a pause stored in memory  
Automatic answer  
52  
28  
37  
45  
Auto Ansr  
Auto Lock  
A1  
Automatic lock  
Two-system operation; non-wireline  
system is active, using phone num-  
ber 1  
Two-system operation; non-wireline  
system is active, using phone num-  
ber 2  
45  
A2  
Two-system operation; wireline sys-  
tem is active, using phone number 1  
45  
45  
18  
31  
b1  
b2  
Two-system operation; wireline sys-  
tem is active, using phone number 2  
Call now being, or was previously,  
received  
CALL  
g
Memory prompt to caution before  
overwriting previously stored infor-  
mation  
ChAn E?  
g
Appears when you change the pre-  
set lock code  
38  
20  
ChAn Ed to  
g
Emergency call in progress  
EMr CY  
1
(using  
)
g
Emergency dialing display status  
Requested memory is full  
29  
31  
47  
EMr CY Call  
FULL  
Home system-type selected  
HOME  
61  
17-1112.fm Page 62 Wednesday, July 21, 1999 2:34 PM  
Message  
SErvice  
Description  
See  
Page(s)  
Service restriction level currently  
selected  
39  
or  
LEvEl 1  
4
Appears before lock code  
Phone is locked  
38  
36  
13  
20  
15  
27  
50  
LocCode  
Loc’d  
Lo bAt  
MUtE  
on  
Battery power is low  
Microphone is turned off  
Briefly appears when display is clear  
Call-time reminder tone  
OnEMIn tMr  
PIN dialing function enabled or dis-  
abled  
or  
Pin ActivE  
inActiv  
Specific cellular ID required (sys-  
tem-type selected)  
47  
P SCAn  
Automatic redial in progress  
22  
30  
47  
47  
47  
rEdiAL  
rEMInd MSg  
SCAn A  
Message reminder tones  
Non-wireline A system-type selected  
A then B scan system-type selected  
SCAn Ab  
SCAn b  
Wireline B scan system-type  
selected  
B then A scan system-type selected  
47  
47  
SCAn bA  
Std Ab  
Standard non-wireline system-type  
selected  
Standard wireline system-type  
selected  
47  
Std bA  
62  
17-1112.fm Page 63 Wednesday, July 21, 1999 2:34 PM  
NOTES  
63  
17-1112.fm Page 64 Wednesday, July 21, 1999 2:34 PM  
Limited One-Year Warranty  
This product is warranted by RadioShack against manufacturing defects in mate-  
rial and workmanship under normal use for one (1) year from the date of pur-  
chase from RadioShack company-owned stores and authorized RadioShack  
franchisees and dealers. EXCEPT AS PROVIDED HEREIN, RadioShack  
MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES, IN-  
CLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICU-  
LAR PURPOSE, ARE LIMITED IN DURATION TO THE DURATION OF THE  
WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. EXCEPT AS PRO-  
VIDED HEREIN, RadioShack SHALL HAVE NO LIABILITY OR RESPONSIBIL-  
ITY TO CUSTOMER OR ANY OTHER PERSON OR ENTITY WITH RESPECT  
TO ANY LIABILITY, LOSS OR DAMAGE CAUSED DIRECTLY OR INDIRECTLY  
BY USE OR PERFORMANCE OF THE PRODUCT OR ARISING OUT OF ANY  
BREACH OF THIS WARRANTY, INCLUDING, BUT NOT LIMITED TO, ANY  
DAMAGES RESULTING FROM INCONVENIENCE, LOSS OF TIME, DATA,  
PROPERTY, REVENUE, OR PROFIT OR ANY INDIRECT, SPECIAL, INCIDEN-  
TAL, OR CONSEQUENTIAL DAMAGES, EVEN IF RadioShack HAS BEEN AD-  
VISED OF THE POSSIBILITY OF SUCH DAMAGES.  
Some states do not allow the limitations on how long an implied warranty lasts or  
the exclusion of incidental or consequential damages, so the above limitations or  
exclusions may not apply to you.  
In the event of a product defect during the warranty period, take the product and  
the RadioShack sales receipt as proof of purchase date to any RadioShack  
store. RadioShack will, at its option, unless otherwise provided by law: (a) correct  
the defect by product repair without charge for parts and labor; (b) replace the  
product with one of the same or similar design; or (c) refund the purchase price.  
All replaced parts and products, and products on which a refund is made, be-  
come the property of RadioShack. New or reconditioned parts and products may  
be used in the performance of warranty service. Repaired or replaced parts and  
products are warranted for the remainder of the original warranty period. You will  
be charged for repair or replacement of the product made after the expiration of  
the warranty period.  
This warranty does not cover: (a) damage or failure caused by or attributable to  
acts of God, abuse, accident, misuse, improper or abnormal usage, failure to fol-  
low instructions, improper installation or maintenance, alteration, lightning or  
other incidence of excess voltage or current; (b) any repairs other than those  
provided by a RadioShack Authorized Service Facility; (c) consumables such as  
fuses or batteries; (d) cosmetic damage; (e) transportation, shipping or insurance  
costs; or (f) costs of product removal, installation, set-up service adjustment or  
reinstallation.  
This warranty gives you specific legal rights, and you may also have other rights  
which vary from state to state.  
RadioShack Customer Relations, Dept. W, 100 Throckmorton St., Suite 600,  
Fort Worth, TX 76102  
We Service What We Sell  
3/97  
RadioShack  
A Division of Tandy Corporation  
Fort Worth, Texas 76102  
68P09411A68  
RGC  
3/98  
Printed in the USA  

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