Radio Shack CT-503 Owner's Manual
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Radio Shack CT-503 Owner's Manual

Radio Shack CT-503 Owner's Manual

Handheld flip-style cellular telephone with headset jack
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17-1112.fm Page 1 Wednesday, July 21, 1999 2:34 PM
Owner's Manual
Cat. No. 17-1112
CT-503 Handheld Flip-Style
Cellular Telephone
with Headset Jack
Please read before using this equipment.

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  • Page 1 17-1112.fm Page 1 Wednesday, July 21, 1999 2:34 PM Owner’s Manual Cat. No. 17-1112 CT-503 Handheld Flip-Style Cellular Telephone with Headset Jack Please read before using this equipment.
  • Page 2 17-1112.fm Page 2 Wednesday, July 21, 1999 2:34 PM FEATURES Your RadioShack CT-503 Handheld Flip-Style Cellular Tele- phone with Headset Jack is a state-of-the-art personal cellu- lar telephone. It has all of these features: Easy-to-Read Ten-Character Display — bright orange and green LED characters let you see essential call information in almost any lighting condition.
  • Page 3 17-1112.fm Page 3 Wednesday, July 21, 1999 2:34 PM 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 —...

  • Page 4: Table Of Contents

    17-1112.fm Page 4 Wednesday, July 21, 1999 2:34 PM 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 ...
  • Page 5 17-1112.fm Page 5 Wednesday, July 21, 1999 2:34 PM 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 ...

  • Page 6: A Look At Your Phone

    17-1112.fm Page 6 Wednesday, July 21, 1999 2:34 PM A LOOK AT YOUR PHONE 1. Retractable Antenna Extend during a call for optimum performance. 2. Earpiece 3. Alphanumeric Display (Ten-Character LED) Displays the status indicators, phone number, memory location number, and message. 4.

  • Page 7: Reading The Display/Indicators

    17-1112.fm Page 7 Wednesday, July 21, 1999 2:34 PM 5. Function Keys — Recalls a function or numbers stored in memory. — Removes characters or clears functions. — Ends a call or exits the functions menu. — Places or answers calls. —...
  • Page 8 17-1112.fm Page 8 Wednesday, July 21, 1999 2:34 PM 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”...
  • Page 9 17-1112.fm Page 9 Wednesday, July 21, 1999 2:34 PM 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).

  • Page 10: Using The Battery

    17-1112.fm Page 10 Wednesday, July 21, 1999 2:34 PM 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.

  • Page 11: Charging The Battery

    17-1112.fm Page 11 Wednesday, July 21, 1999 2:34 PM 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.

  • Page 12: Checking Battery Power

    17-1112.fm Page 12 Wednesday, July 21, 1999 2:34 PM 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.

  • Page 13: Replacing A Battery During A Call

    17-1112.fm Page 13 Wednesday, July 21, 1999 2:34 PM To see a more detailed indication of the battery’s charge level at any time, press . The battery strength meter ap- pears on the display for about 5 seconds. Read this meter in the same way.

  • Page 14: Important Battery Tips

    17-1112.fm Page 14 Wednesday, July 21, 1999 2:34 PM 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 •...

  • Page 15: Basic Operation

    17-1112.fm Page 15 Wednesday, July 21, 1999 2:34 PM BASIC OPERATION TURNING THE PHONE ON/OFF To turn on the phone , flip open the cover then press phone performs a short self test and sounds a tone, the key- pad backlight turns on for about 17 seconds, and pears.

  • Page 16: Making A Call

    17-1112.fm Page 16 Wednesday, July 21, 1999 2:34 PM 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.
  • Page 17 17-1112.fm Page 17 Wednesday, July 21, 1999 2:34 PM 3. Press to call the phone number. diALin g then the number called appear briefly, then reappears. 4. To end the call, press 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...

  • Page 18: Answering A Call

    17-1112.fm Page 18 Wednesday, July 21, 1999 2:34 PM ANSWERING A CALL When the phone receives an incoming call, it rings and flashes on the display. To answer the call, press the call, press Notes: • Your phone can receive calls even if the antenna is not extended.

  • Page 19: Adjusting The Volume

    17-1112.fm Page 19 Wednesday, July 21, 1999 2:34 PM ADJUSTING THE VOLUME Adjusting the Earpiece Volume To increase or decrease the earpiece volume during a call, 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.

  • Page 20: Making Emergency Calls

    17-1112.fm Page 20 Wednesday, July 21, 1999 2:34 PM 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 with someone else in the room, for example), press MUtE appears.

  • Page 21: Redialing Numbers

    17-1112.fm Page 21 Wednesday, July 21, 1999 2:34 PM Important Notes: • If you disabled the emergency display (see “Disabling the Emergency Display” on Page 29), the phone does EMr g CY not display when you make emergency calls using the key.

  • Page 22: Using Automatic Redial

    17-1112.fm Page 22 Wednesday, July 21, 1999 2:34 PM Using Automatic Redial To automatically redial a number when you get the cellular system busy signal (when Snd to rEdiAL appears), press rEdiAL appears. The phone automatically redials the number at regular intervals for up to 4 minutes or until the call goes through.

  • Page 23: Displaying Numbers

    17-1112.fm Page 23 Wednesday, July 21, 1999 2:34 PM DISPLAYING NUMBERS Your Phone Number To display your phone number at any time (even while a call is in progress), simply press Note: If you have two phone numbers programmed into your phone (see “Selecting the Active Phone Number”...

  • Page 24: Menu Functions

    17-1112.fm Page 24 Wednesday, July 21, 1999 2:34 PM 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).
  • Page 25 17-1112.fm Page 25 Wednesday, July 21, 1999 2:34 PM 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.
  • Page 26 17-1112.fm Page 26 Wednesday, July 21, 1999 2:34 PM Functions List Display Shows Function Description Phone beeps once every OnEMIn tMr or OFF minute during a call to remind you how long you have been on the phone rin g Er St y LE Sets the phone to use one of and a number nine different ringer styles...

  • Page 27: Using The Menu Functions

    17-1112.fm Page 27 Wednesday, July 21, 1999 2:34 PM 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.
  • Page 28 17-1112.fm Page 28 Wednesday, July 21, 1999 2:34 PM 5. When you hear the ringer style you want to use, press to select it. The phone displays (where is the number of the ringer style you selected). 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...
  • Page 29 17-1112.fm Page 29 Wednesday, July 21, 1999 2:34 PM Disabling the Emergency Display Your phone is preset to display down to make an emergency call; however, you can set EMr g CY the phone so does not appear (if you did not store an emergency number in memory 01, for example).
  • Page 30 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: •...

  • Page 31: Using Memory

    17-1112.fm Page 31 Wednesday, July 21, 1999 2:34 PM 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 blank to conserve battery power.

  • Page 32: One-Touch Dialing

    17-1112.fm Page 32 Wednesday, July 21, 1999 2:34 PM To use the selected memory location and replace the information currently stored there, press ONE-TOUCH DIALING To quickly place a call to any number stored in memory loca- tions 2 or 3 (without pressing number key for about 1 second.

  • Page 33: Memory Scrolling/Dialing

    17-1112.fm Page 33 Wednesday, July 21, 1999 2:34 PM MEMORY SCROLLING/DIALING 1. Press 2. Press to start scrolling from the first memory OPER location, or enter a specific memory number (such as 11) that you want to start from. The location number followed ’...

  • Page 34: Changing A Number In Memory

    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. 2. Repeatedly press to backspace and erase digits, then enter the correct numbers; or simply add digits to the existing number.

  • Page 35: Using Scratchpad Memory

    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.

  • Page 36: Security Features

    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”...
  • Page 37 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 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.
  • Page 38 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. 4. Press . The phone displays new lock code. 5. When you finish, hold down clear the lock code from the display.

  • Page 39: Using The Service Restriction

    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 security code (000000) and set this service restriction.

  • Page 40: Special Features

    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.
  • Page 41 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.

  • Page 42: Using The Call Timers

    17-1112.fm Page 42 Wednesday, July 21, 1999 2:34 PM 2. To view another message, repeatedly press scroll backwards) or (to scroll forwards) until that message appears. 3. When you finish, press tion. Deleting Messages To delete an individual message , recall that message, then hold down until the phone displays To delete all messages in the stack , while viewing any mes-...
  • Page 43 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.
  • Page 44 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.

  • Page 45: Selecting The Active Phone Number

    17-1112.fm Page 45 Wednesday, July 21, 1999 2:34 PM 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.

  • Page 46: Setting The Cellular System Type

    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. •...
  • Page 47 17-1112.fm Page 47 Wednesday, July 21, 1999 2:34 PM Your phone’s selectable system registration function lets you select one of seven possible roaming modes: Roaming Mode Description Standard Mode — the phone first seeks a home type system, then it seeks a non-home type. If you are using a type A (non-wireline) home system If you are using a type B (wireline) home system Invert Preference Mode —...
  • Page 48 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, press . The currently selected system type (such as ) appears for about 8 seconds. To clear the display HOME sooner, press Selecting the Cellular System Type...

  • Page 49: Roaming

    17-1112.fm Page 49 Wednesday, July 21, 1999 2:34 PM 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.
  • Page 50 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.

  • Page 51: Using The Phone With Handsfree Equipment

    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.

  • Page 52: Using Touch-Tone Services

    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. • 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...
  • Page 53 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 again.

  • Page 54: Troubleshooting

    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.

  • Page 55: Safety Information

    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.

  • Page 56: Emergency Calls

    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.

  • Page 57: Fcc Regulations

    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.

  • Page 58: Care And Maintenance

    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.

  • Page 59: Specifications

    17-1112.fm Page 59 Wednesday, July 21, 1999 2:34 PM SPECIFICATIONS Dimensions ... 5 Weight (with Supplied Battery) ... 9.6 oz 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 ...
  • Page 60 17-1112.fm Page 60 Wednesday, July 21, 1999 2:34 PM 4400585 4668917 4827507 5018188 D270835 4670747 4829274 5020091 D271491 4672502 4837534 5020092 Re31470 4680787 D301476 5020093 4431977 4681476 4843621 5028083 4434461 4683585 4845772 5028859 4455534 4692726 D302015 5029044 4462098 4704588 4851966 5029233 D275951 D292578...

  • Page 61: Display Message Glossary

    17-1112.fm Page 61 Wednesday, July 21, 1999 2:34 PM DISPLAY MESSAGE GLOSSARY Message Description ’ (Apostrophe) Memory scrolling active Shows a pause stored in memory Auto Ansr Automatic answer Auto Lock Automatic lock Two-system operation; non-wireline system is active, using phone num- ber 1 Two-system operation;...
  • Page 62 17-1112.fm Page 62 Wednesday, July 21, 1999 2:34 PM Message Description SErvice Service restriction level currently selected LEvEl 1 LocCode Appears before lock code Loc’d Phone is locked Lo bAt Battery power is low MUtE Microphone is turned off Briefly appears when display is clear OnEMIn tMr Call-time reminder tone Pin ActivE...
  • Page 63 17-1112.fm Page 63 Wednesday, July 21, 1999 2:34 PM NOTES...
  • Page 64 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.

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