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Thank you for purchasing your Trim Phone with Caller ID 
from RadioShack.

phone 

user’s guide

short modular cord 

long modular cord

what’s included

43-3904

Trim Phone

with Caller ID

Your phone requires three AA batteries (not supplied) 

for power.
1.  Use a flat-blade screwdriver 

to lift and remove the 

battery compartment door.

2.  Insert three AA batteries, 

matching the polarity 

symbols (+ and -) marked 

inside.

3.  Snap the battery 

compartment door back 

into place. When the low 

battery icon appears on the 

display or the display dims, 

replace the batteries.

Battery Notes:

•  

Dispose of old batteries promptly and properly. 

•  

Do not burn or bury batteries.

•  

Use only fresh batteries of the required size and 
recommended type.

•  

Do not mix old and new batteries, different types 
of batteries (standard, alkaline, or rechargeable), or 
rechargeable batteries of different capacities.

•  

If you do not plan to use the phone for two weeks 
or longer, remove the batteries. Batteries can leak 
chemicals that can destroy electronic parts.

•  

You must install the batteries before connecting the 
telephone to the wall jack. If no batteries are installed, 
the telephone and Caller ID still working with no display.

•  

If you do not replace the batteries within two minutes, 
your Caller ID and telephone menory information may be 
lost.

installing batteries

mounting the phone

selecting a location

Select a location for your telephone that is:

• 

Near a telephone jack

• 

Not in the way of normal activities 

mounting the phone

You can mount your telephone on a wall plate, on a wall, 

or place it on a shelf, desk, or table.

on a wall plate

1.  Plug one end of the supplied short 

modular cord into the modular jack 

on the back of your phone.

2.  Route the cord through the groove 

on the bottom of the base. Secure 

the cord with the tabs.

3.  Plug the other end of the cord into a 

wall plate with a modular phone jack.

on a wall

1.  Drill two holes 3 1/4 inches (82.5 mm) apart, one 

below the other. 

2.  Thread two screws (not supplied) into each hole, 

letting the heads extend about 3/16 inch from the 

wall. Be sure to use screws with heads that fit into the 

keyhole slots on the bottom of the base.

3.  Plug one end of the supplied long modular cord into 

the modular jack on the back of the base.

4.  Route the phone cord through the groove on the 

bottom of the base, securing the cord under the tabs.

5.  Fit the heads of the screw into the keyhole slots, then 

slide the base down until it is secure.

6.  Plug the other end of the cord into a modular phone 

jack.

on a desktop

1.  Plug one end of the supplied long 

modular cord into the modular jack 

on the bottom of the base.

2.  Route the phone cord through 

the groove on the base’s bottom. 

Secure the cord under the tabs 

along the groove.

3.  Plug the other end of the cord into 

a modular phone jack

Plug one end of the supplied coiled cord into the 

handset’s modular jack, and then connect the other end 

to the jack on the bottom of the telephone base.

Your local RadioShack store sells a variety of longer 

coiled handset cords, which are especially useful 

when you mount the phone on a wall.

connecting the handset

1.  Hold down both 

(

REVIEW

)

 

for about four seconds until 

ENTER LANGUAGE

, then 

ENG

 (flashing) 

ESP FRA

 appear. 

2.  Press

 

(

 

or 

to select the desired language, then 

press 

DELETE

 to confirm. 

LCD CONTRAST

 and 

1 2 3 4 5

 

appear on the display, and 

3

 flashes.

3.  Press 

 

(

 

or 

 to select the contrast level (from 1-5), 

and then press 

DELETE

 to confirm. 

ENTER AREA CODE

 

appears, _ _ _ appears and the first _ flashes. 

4.  Press 

 

(

 

or 

 to select the first number of the area 

code. Press 

DELETE

 to confirm the selection.

5.  Repeat step 4 to select the second and third digit.

ENTER TIME DATE 

appears and the hour digit flashes.

6.  Press 

 

(

 

or 

)

 to select the desired hour, and then 

press 

DELETE 

to confirm. 

AM

 appears for an AM hour, 

PM

 appears for a PM hour.

7.  Repeat step 6 to set the minutes, month, and day.

Do not lift the handset from the base until the Caller 

ID setup has been completed.

connecting the handset

If you do not want to hear the phone ring, slide 

RINGER

 

to 

OFF

. You can still make calls with the ringer off, and 

you can answer calls if you hear another phone on the 

same phone line ring.

 NEW

 flashes when the phone rings, 

even when the ringer is off. 

setting the ringer

Slide 

TONE/PULSE

 to the appropriate setting for your 

type of service. If you are not sure which service you 

have, do this simple test.
1.  Slide 

TONE/PULSE

 to 

TONE

. Lift the handset and 

listen for a dial tone.

2.  Press any number except

 0

. If your phone requires that 

you dial an access code before you dial an outside 

number (9, for example), do not press the access code 

number.

•  

If the dial tone stops, you have touch-tone service. 

Slide 

TONE/PULSE to TONE

.

•  

If the dial tone continues, you have pulse service. 

Slide 

TONE/PULSE to PULSE.

setting the dialing mode

Some computer services, such as alternate long distance, 

require tone signals for communications. If you have pulse 

service, you can still use special tone service by following 

these steps.
1.  Connect to the special service with 

TONE/PULSE

 set to 

PULSE

.

2.  When the special service answers, change  

TONE/PULSE 

to 

TONE

, or press * to temporarily switch 

to tone dialing.

3.  When you complete the call, hang up and return the 

setting to 

PULSE

.

using special tone services

MUTE - 

Hold 

down to talk without 

the caller hearing your 

conversation.

FLASH - 

If you have 

Call Waiting, press 

FLASH 

to answer an 

incoming call without 

disconnecting the 

current call. Press again 

to return to the first call.

REDIAL/PAUSE 

- Press to dial the last 

phone number you 

entered.

RINGER ON/OFF 

Slide to the desired 

setting to enable or 

disable the ringer when 

you receive a call.

Liquid Crystal 

Display - 

Shows the 

caller’s phone number 

with LED light, the time 

they called, and the 

number you dial.

CALL BACK - 

Press 

to automatically dial 

the selected caller ID 

record.

DELETE - 

Press to 

delete the selected 

caller ID record.

VOLUME NORM/HI 

Slide 

VOLUME

 to 

NORM

 

or 

H

I to adjust the handset 

volume to a comfortable 

listening level.

TONE/PULSE -

 Slide to 

the desired setting to select 

tone or pulse dialing.

REVIEW

 

)

 - Press 

(

or 

)

 

to scroll through the stored 

caller ID records.

Modular jacks for 

coiled cord

NOTE

NOTE

Please read this user’s guide before 

installing, setting up and using your new product

www.radioshack.com

LED -

 the led light red 

when a new phone comes.

A

Plug one end of the 

long modular cord here

Note: Actual product may vary from the images found in this document.

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