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Model 27940

2.4 GHz Cordless  

Telephone System 

User’s Guide

Equipment Approval Information

Your telephone equipment is approved for connection to the Public Switched Telephone Network 

and is in compliance with parts 15 and 68, FCC Rules and Regulations and the Technical 

Requirements for Telephone Terminal Equipment published by ACTA.

1  Notification to the Local Telephone Company

On the bottom of this equipment is a label indicating, among other information, the US number 

and Ringer Equivalence Number (REN) for the equipment. You must, upon request, provide this 

information to your telephone company.
The REN is useful in determining the number of devices you may connect to your telephone line 

and still have all of these devices ring when your telephone number is called. In most (but not 

all) areas, the sum of the RENs of all devices connected to one line should not exceed 5. To be 

certain of the number of devices you may connect to your line as determined by the REN, you 

should contact your local telephone company.
A plug and jack used to connect this equipment to the premises wiring and telephone network 

must comply with the applicable FCC Part 68 rules and requirements adopted by the ACTA. A 

compliant telephone cord and modular plug is provided with this product. It is designed to be 

connected to a compatible modular jack that is also compliant. See installation instructions for 

details.

Notes 

• This equipment may not be used on coin service provided by the telephone company.
• Party lines are subject to state tariffs, and therefore, you may not be able to use your own 

telephone equipment if you are on a party line. Check with your local telephone company.

• Notice must be given to the telephone company upon permanent disconnection of your 

telephone from your line.

• If your home has specially wired alarm equipment connected to the telephone line, ensure 

the installation of this product does not disable your alarm equipment. If you have questions 

about what will disable alarm equipment, consult your telephone company or a qualified 

installer.

US Number is located on the cabinet bottom.

REN Number is located on the cabinet bottom.

2  Rights of the Telephone Company 

Should your equipment cause trouble on your line which may harm the telephone network, 

the telephone company shall, where practicable, notify you that temporary discontinuance of 

service may be required. Where prior notice is not practicable and the circumstances warrant 

such action, the telephone company may temporarily discontinue service immediately. In case 

of such temporary discontinuance, the telephone company must: (1) promptly notify you of 

such temporary discontinuance; (2) afford you the opportunity to correct the situation; and (3) 

inform you of your right to bring a complaint to the Commission pursuant to procedures set 

forth in Subpart E of Part 68, FCC Rules and Regulations.
The telephone company may make changes in its communications facilities, equipment, 

operations or procedures where such action is required in the operation of its business and not 

inconsistent with FCC Rules and Regulations. If these changes are expected to affect the use or 

performance of your telephone equipment, the telephone company must give you adequate 

notice, in writing, to allow you to maintain uninterrupted service.

Interference Information

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two 

conditions: (1) This device may not cause harmful interference; and (2) This device must accept any 

interference received, including interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital device, 

pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection 

against harmful interference in a residential installation.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed 

and used in accordance with the instructions, may cause harmful interference to radio 

communications. However, there is no guarantee that interference will not occur in a particular 

installation.
Privacy of Communications may not be ensured when using this product.
If this equipment does cause harmful interference to radio or television reception, which can be 

determined by turning the equipment off and on, the user is encouraged to try to correct the 

interference by one or more of the following measures:

• Reorient or relocate the receiving antenna (that is, the antenna for radio or television that is 

“receiving” the interference).

• Reorient or relocate and increase the separation between the telecommunications 

equipment and receiving antenna.

• Connect the telecommunications equipment into an outlet on a circuit different from that to 

which the receiving antenna is connected.

If these measures do not eliminate the interference, please consult your dealer or an experienced 

radio/television technician for additional suggestions. Also, the Federal Communications 

Commission has prepared a helpful booklet, “How To Identify and Resolve Radio/TV Interference 

Problems.” This booklet is available from the U.S. Government Printing Office, Washington, D.C. 

20402. Please specify stock number 004-000-00345-4 when ordering copies.
Notice: The changes or modifications not expressly approved by the party responsible for 

compliance could void the user’s authority to operate the equipment.

Hearing Aid Compatibility (HAC)

This telephone system meets FCC standards for Hearing Aid Compatibility.

Licensing

Licensed under US Patent 6,427,009.

FCC RF Radiation Exposure Statement

This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled 

environment. This equipment should be installed and operated with a minimum distance of 20 

centimeters between the radiator and your body. This transmitter must not be co-located or 

operated in conjunction with any other antenna or transmitter.” 
For body worn operation, this phone has been tested and meets the FCC RF exposure guidelines 

when used with the belt clip supplied with this product. Use of other accessories may not ensure 

compliance with FCC RF exposure guidelines.

Introduction

CAUTION: When using telephone equipment, there are basic safety 

instructions that should always be followed. Refer to the IMPORTANT 

SAFETY INSTRUCTIONS provided with this product and save them for 

future reference.

IMPORTANT: Because cordless phones operate on electricity, you should 

have at least one phone in your home that isn’t cordless, in case the 

power in your home goes out.

Before You Begin

Parts Checklist

Make sure your package includes the items shown here.

Handset Layout

Base Station

1.  Choose an area near an electrical outlet and a telephone wall jack (RJ11C), and place 

your cordless telephone on a level surface, such as a desktop or tabletop.

Ringer Tone

1.  Press the 

FLASH/program

 button until 

RINGER TONE

 shows in the display. 

2.  Use the 

CID/VOL

 (

5

 or 

6

) button or the handset number pad (1-3) to enter your selection 

from Ringer Tone 1, 2, or 3. The default setting is 

RINGER TONE 1

.

3.  Press the 

FLASH/program

 button to confirm and to advance to the next menu feature.

Tone/Pulse

1.  Press the 

FLASH/program

 button until 

1 TONE 2 PULSE

 shows in the display.

2.  Use the 

CID/VOL

 (

5

 or 

6

) button or the handset number pad to enter your selection. The 

default setting is 

1 TONE

.

3.  Press the 

FLASH/program

 button to confirm and to advance to the next menu feature.

Factory Default

This feature allows you to restore the unit’s original features.
1.  Press the 

FLASH/program

 button until 

DEFAULT

 shows in the display. 

2.  Use the 

CID/VOL 

(

5

 or 

6

) button to scroll to 

YES

 o 

NO.

 The default setting is 

NO

.

3.  Press 

FLASH/program

 to confirm. You will hear a confirmation tone.

Visual Indicators 

Base

The in use indicator on the base will flash to alert you to an incoming call, during paging, or 

if you have a message waiting from your service provider. The indicator will remain lit when 

the line is in use. 

NOTE: In order to use this unit’s Visual Message Waiting Indicator (VMWI) 

feature, you must subscribe to this service from your phone company.

Charge Cradle

The charge indicator will remain lit when a handset is charging.

Handset

The Visual Ringer Indicator will flash to alert you to an incoming call.  When the unit  has 

received a message, the display will show 

MESSAGE WAITING

.

 

Cordless Phone Basics

Making a Call

1.  Press the 

TALK/CALL BACK

 button and dial the desired number. -OR-

  To perform preview dial, dial the number first then press the 

TALK/CALL BACK

 button.

2.  To hang up, press the 

TALK/CALL BACK

 button or place the handset in the cradle.

Receiving a Call

1.  To answer a call press the 

TALK/CALL BACK

 button on the handset before you begin 

speaking.

2.  To hang up, press the 

TALK/CALL BACK 

button or place the handset in the cradle.

Redial

Press the 

REDIAL

 button to quickly dial the last number you called (up to 32 digits).

If you get a busy signal, and want to keep dialing the number, press 

REDIAL

 to dial the 

number again.

Flash

If you subscribe to the combined Call Waiting Caller ID service from your local telephone 
company you will receive Caller ID information (if available) on Call Waiting calls. During a 
phone call, you will hear a beep to indicate another call is waiting on the line and Caller ID 
information for the waiting call shows on the handset display. To connect the waiting call, 
press the 

FLASH/program

 button on the handset and your original call is put on hold. You 

may switch back and forth between the two calls by pressing the 

FLASH/program

 button.

TIP: Do not use the TALK/CALL BACK button to activate custom calling 
services such as call waiting, or you’ll hang up the phone. 

Volume

When the phone is 

ON

, press the 

CID/VOL

 (

5

 or 

6

) on the handset to adjust the volume 

of the handset’s earpiece. There are four settings. Press the 

CID/VOL

 

5

 to increase the 

volume and 

CID/VOL

 

6

 arrow to decrease the volume. You will see the volume setting on the 

handset display. VOL 4 is the maximum and VOL 1 is the minimum.

Channel

While talking on the phone, you might need to manually change the channel in order 
to reduce static caused by appliances, such as baby monitors, garage door openers, 
microwave ovens, or other cordless phones. Press and release the 

DELETE

 button to move 

to the next clear channel.

Temporary Tone

This feature is useful only if you have pulse (rotary) service. Temporary Tone Dialing enables 
pulse (rotary) service phone users to access touchtone services offered by banks, credit card 
companies, etc. 
For example, when you call your bank you may need to enter your bank account number. 

Temporarily switching to touchtone mode allows you to send your number.
1.  Dial the telephone number and wait for the line to connect.
2.  When your call is answered, press the 

*TONE/exit

 button on the handset to temporarily 

change from pulse dialing to tone dialing. 

3.  Follow the automated instructions to get the information you need.
4.  Hang up the handset and the phone automatically returns to pulse (rotary) dialing mode.

Exit

Press the 

*TONE/exit

 button to cancel any command you initiated.

Ringer On/Off 

1.  Press 

RINGER

 button to enter the ringer on/ off setting menu and current setting will 

show in display.

2.  Press 

RINGER

 button again to change the setting and you will hear the confirmation tone.

NOTE: If you turn the ringer OFF, 

RINGER OFF

 shows in the display.

Paging the Handset

This feature helps to locate a misplaced handset.
Press the 

PAGE

 button on the base. The handset will beep for about two minutes or until you 

press 

TALK/CALL BACK

 on the handset or press the 

PAGE

 button on the base.

NOTE: You can still page the handset if the ringer is turned off. If the 

battery is dead, the Paging feature will not work.

Parallel Phone Detection

This phone is capable of detecting parallel phone line use. (ie; another phone is using the line 

or the line is in use for computer or fax activity)
When the phone detects parallel use, 

LINE IN USE

 shows in the display.

Caller ID (CID)

IMPORTANT: In order to use this unit’s Caller ID features, you must 

subscribe to either the standard Name/Number Caller ID Service or Call 

Waiting Caller ID Service. To know who is calling while you are on the 

phone, you must subscribe to Call Waiting Caller ID Service.

This unit receives and displays information transmitted by your local phone company. This 

information can include the phone number, date, and time; or the name, phone number, 

date, and time. 

Model 27940

00021157 (Rev. 0 Dom E/S)

07-30

Printed in China

Thomson Inc.

101 West 103rd St.

Indianapolis, IN 46290-1102

© 2007 Thomson Inc. 

Trademark(s) ® Registered

Marca(s) Registrada(s)

Telephone Jack Requirements

To use this phone, you need an RJ11C type modular telephone 

jack, which might look like the one pictured here, installed in 

your home. If you don’t have a modular jack, call your local 

phone company to find out how to get one installed.

Installation 

Digital Security System

Your cordless phone uses a digital security system to protect against false ringing, 

unauthorized access, and charges to your phone line.

INSTALLATION NOTE: Some cordless telephones operate at frequencies 

that may cause or receive interference with nearby TVs, microwave 

ovens, and VCRs. To minimize or prevent such interference, the base 

of the cordless telephone should not be placed near or on top of a TV, 

microwave ovens, or VCR. If such interference continues, move the 

cordless telephone farther away from these appliances.
Certain other communications devices may also use the 2.4 GHz 

frequency for communication, and, if not properly set, these devices 

may interfere with each other and/or your new telephone. If you are 

concerned with interference, please refer to the owner’s manual for 

these devices on how to properly set channels to avoid interference. 

Typical devices that may use the 2.4 GHz frequency for communication 

include wireless audio/video senders, wireless computer networks, 

multi-handset cordless telephone systems, and some long-range 

cordless telephone systems.

Important Installation Guidelines

•  Avoid sources of noise and heat, such as motors, fluorescent lighting, microwave 

ovens, heating appliances and direct sunlight.

•  Avoid areas of excessive dust, moisture and low temperature.
•  Avoid other cordless telephones or personal computers.
•  Never install telephone wiring during a lightning storm.
•  Never install telephone jacks in wet locations unless the jack is specifically designed for 

wet locations.

•  Never touch non-insulated telephone wires or terminals, unless the telephone line has 

been disconnected at the network interface.

•  Use caution when installing or modifying telephone lines.

Base

Telephone line cord

Handset battery pack

Handset

Handset recharge cradle

AC power 

adaptor

Modular 

telephone line 

jack

Wall plate

Installing the Phone

Installing the Handset Battery

NOTE: You must connect the handset battery before use.

CAUTION: To reduce the risk of fire or personal injury, use only the 

Thomson Inc. approved Nickel Metal Hydride (Ni-MH) battery model 

5-2781 that is compatible with this unit.

1.  Locate battery and battery door which are packaged together inside a plastic bag and 

are separate from the handset.

2.  Locate the battery compartment on the bottom of the handset.
3.  Insert the battery pack.
4.  Plug the battery pack cord into the jack inside the compartment. 

NOTE: To ensure proper battery installation, the connector is keyed and 

can be inserted only one way.

SEE MARKING ON BOTTOM / BACK OF PRODUCT

RISK OF ELECTRIC SHOCK

            DO NOT OPEN

WARNING:

 TO

PREVENT FIRE OR

ELECTRICAL SHOCK

HAZARD, DO NOT

EXPOSE THIS

PRODUCT  TO RAIN

OR MOISTURE.

THE LIGHTNING

FLASH AND ARROW

HEAD WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU OF

“DANGEROUS

VOLTAGE” INSIDE

THE PRODUCT.

CAUTION: TO REDUCE THE

RISK OF ELECTRIC SHOCK, DO

NOT REMOVE COVER (OR

BACK). NO USER

SERVICEABLE PARTS INSIDE.

REFER SERVICING TO

QUALIFIED SERVICE

PERSONNEL.

THE EXCLAMATION

POINT WITHIN THE

TRIANGLE IS A

WARNING SIGN

ALERTING YOU  OF

IMPORTANT

INSTRUCTIONS

ACCOMPANYING

THE PRODUCT.

CAUTION:

CID/VOL 

5

 or 

6

  

(caller ID/volume 

button)

FORMAT 

(button)

Display

TALK/CALL BACK 

(button)

REDIAL 

(button)

MEM 

(memory button)

*TONE/exit  

(button)

DELETE/channel 

(button)

RINGER (button)

FLASH/program  

(button)

#/PAUSE 

(button)

Visual Ringer 

Indicator

Time

Date

Number of calls

Caller ID name

Caller ID phone number

Call Waiting Caller ID

Provided you subscribe to Call Waiting Caller ID service from your phone company; if you 

receive an incoming call and you are already on the phone, a beep indicates the presence 

of a Call Waiting call on the line. Only the handset that is in use at the time of the call will 

display and store the Call Waiting Caller ID information.

•  When you hear the call waiting beep in the handset receiver, press the 

FLASH/

program

 button to put the current call on hold and answer the incoming call. Press 

FLASH/program

 again to return to the original call.

Receiving CID Records

When you receive a call, the Caller ID information is transmitted between the first and 

second ring. The Caller ID information appears on the display while the phone rings, giving 

you a chance to monitor the information and decide whether or not to answer the call.

Storing CID Records (In CID Memory)

If you are not at home or cannot answer, your telephone’s Caller ID memory stores the 

data for the 40 most recent calls you received so you can see who called while you 

were unavailable. When the 41st call is received, the oldest Caller ID record (1st call) is 

automatically deleted.
You may review the stored information at any time. Calls received since your last review 

show as 

NEW

 in the display. Calls that have not been previously reviewed but were received 

from the same number more than once show as 

REPT

 in the display.

Battery Door

2.  Plug one end of the telephone line cord in the LINE IN jack on the back of the base and 

the other end into a modular jack.

NOTE: The base unit acts as a splitter, allowing you to plug another 

phone into the LINE OUT jack on the base.

3.  Plug the AC power converter into the electrical outlet and the DC connector into the jack 

on the bottom of the base.

CAUTION: To reduce risk of personal injury, fire, or damage use only 

the 5-2749 power adaptor listed in the user’s guide. This power 

adaptor is intended to be correctly orientated in a vertical or floor 

mount position. 

Handset Registration

The handset is pre-registered to the base unit. If your handset is properly connected, but you 

cannot hear a dial tone when pressing the 

TALK/CALL BACK

 button, it may not be properly 

registered. Follow these steps to re-register the handset to the wall base unit:
1.  Make sure the handset is 

OFF

 (not in TALK mode).

2.  Press and hold the 

FORMAT

 button on the handset until you hear a beep and 

PRESS AND 

HOLD BASE PAGE KEY

 shows in the display.

3.  Move the handset close to the wall base unit.
4.  Press and hold the 

PAGE

 button on the wall base unit.

NOTE: You must press the PAGE button on the wall base unit within 30 

seconds to continue registration. 

5.  You will hear a confirmation tone when the registration is complete, and  the handset’s 

display shows 

REGISTERED

.

Handset Setup

There are five programmable menus available: Language, Local Area Code, Ringer Tone, 

Tone/Pulse and Factory Default. When you program these settings, make sure the phone 

is 

OFF

 (not in talk mode). Pressing the 

*TONE/exit

 button will remove you from the menu 

selection process without changing the feature you are in. 

Display Language

1.  Press the 

FLASH/program

 button until 

1ENG 2FRA 3ESP

 shows in the display.

2.  Use the 

CID/VOL

 (

5

 or 

6

) button or the handset number pad to select 1 (English), 2 

(French), or 3 (Spanish). The default setting is

 

1ENG

.

3.  Press the 

FLASH/program

 button to confirm and to advance to the next menu feature.

Local Area Code

If you enter your local 3-digit area code in the area code menu, your local area code does 

not display on the Caller ID (CID) list. Instead, you only see the local 7-digit number. Calls 

received from outside your local area code will display the full 10-digit number.
1.  Press the 

FLASH/program

 button until 

AREA CODE - - -

 shows in the display. The default 

setting is - - -.

2.  Use the handset number pad to enter your 3-digit area code.

NOTE: If you make a mistake, press the DELETE/channel button to erase 

the incorrect area code and repeat step 2. 

3.  Press the 

FLASH/program

 button to confirm and to advance to the next menu feature.

5.  Position the wires in the space between the ribs to secure its position.
6.  Attach the battery door by securely tightening the three screws on the bottom.
7.  Plug the AC power adaptor of the charge cradle into the electrical outlet, and place 

the handset in the charge cradle, the charge indicator turns on, verifying the battery is 

charging.

8.  Allow the phone to charge for 16 hours prior to first use. If you don’t properly charge the 

phone, battery performance is compromised.

Place the battery
wires between
these two ribs.

BATTERY PACK

RED WIRE

PRESS DOWN FIRMLY

BLACK WIRE

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