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:

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.
for use with Systems 21900
and 21905 Series
Model 21920
00020672 (Rev. 0 DOM E/S)
07-27
Printed in China
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:
Quick Set-Up Guidefor Optional/Additional Model 21920 True Digital Cordless Handset
• 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.

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.
Parts Checklist
Make sure your package includes the items shown here.

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 battery model 5-2721,
which 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 back of the handset.
3. 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.
4. Insert the battery pack.
5. Close the battery compartment by pushing the door up until it
snaps into place.
6. Place the handset in the base to charge.
Extra Charging Cradle
1. Plug the AC power converter of the extra charging cradle into the
electrical outlet.
2. Place the handset in the extra charging cradle. The charge
indicator turns on, verifying the battery is charging.
3. Allow the phone to charge for 16 hours prior to first use.

Registration

YOU MUST REGISTER THE HANDSET BEFORE USE!
After the optional handset has charged for 16 hours, HANDSET
NEEDS REGISTRATION shows in the display.
1. Press the menu/mute button. HOLD BASE PAGE WAIT FOR BEEP
shows in the display. (Your handset should be held near the base
during registration process.)
2. Press and hold the page button on the base unit until you hear
a confirmation tone. HANDSET X REGISTERED shows in the
handset display, where X is the handset number. You may now
rename your handset. (Refer to Step 3 & 4 of Handset Name
Section).

Naming the Handset

1. Use the touch-tone pad to enter a name (up to 15 characters).
NOTE: If you make a mistake, use the delete/int
button to backspace and delete one character at a
time.
2. Press the menu/mute button to save your name. You will hear a
confirmation tone and the handset name shows in the display.

De-Registration

This feature allows you to remove a registered handset from
base. During the de-registration process, keep the handset near
the base.
From the Handset Setup Menu:
1. Press the cid/vol ( 6 or 5) button to scroll to the DEREGISTRATION
sub-menu.
2. Press the menu/mute button to enter the menu. DEREGISTRATION
1YES 42NO shows in the display The default setting is "2NO".
3. Use the touch-tone pad to select 1 for YES or 2 for NO. Or use the
cid/vol ( 6 or 5) button to scroll to 1YES or 2NO.
WARNING: It is not recommended that a handset be
de-registered unless absolutely necessary because
once a handset is de-registered, that handset’s
telephone features cannot be used until the handset is
re-registered.
4. Select NO, if you do not want to de-register.
5. If you select 1YES, press the menu/mute button and MOVE NEAR
TO BASE displays for 2 seconds, then CONFIRM? 1YES 2NO
appears in the display.
6. Press the touch-tone pad to select 1YES or 2NO, or use the cid/vol
( 6 or 5) button to scroll to 1YES or 2NO.
7. If you select YES, press the menu/mute button to confirm.
DE-REGISTER... shows in the display. You will hear a confirmation
tone. Then HANDSET X DEREGISTERED shows in the display to
confirm the handset is deregistered.
NOTE: When you complete the de-registration
process, HANDSET NEEDS REGISTRATION shows
in the display. To use the handset, you MUST re-
register the handset using the Registration process.

Global De-registration

If one or more handsets becomes lost, you should de-register all
handsets to ensure proper system operation. Follow the steps below
to de-register all handsets at the same time.
WARNING: It is not recommended that a handset be
de-registered unless absolutely necessary because
once a handset is de-registered, that handset’s
telephone features cannot be used until the handset is
re-registered.
1. Press and hold the page button on the base until the charge/in
use indicator on the base flashes. Release.
2. Press and hold the page button on the base again until the
charge/in use indicator on the base flashes rapidly. Release.
3. Press and release the page button on the base once.
4. All handsets are de-registered and HANDSET NEEDS
REGISTRATION shows in the display.

Intercom Operation

(applicable only with additional handsets)
The intercom feature allows you to have a conversation with
another registered handset without tying up the telephone line,
allowing you to still receive incoming calls.
Making an Intercom Call
1. Make sure the handset is OFF (not in talk mode).
2. Press delete/int on the handset.
3. Use the touch-tone pad to select the handset you want to page.
NOTE: To cancel page, press the delete/int button
again or the flash/exit button on the sending
handset.
4. Wait for the person at the receiving handset to press delete/int.
NOTE: If the receiving handset does not answer
within two minutes, the intercom call is
automatically canceled. The originating handset
displays NO ANSWER.
5. When finished, press the flash/exit button or delete/int button on
either handset to de-activate the intercom.
NOTE: The system is expandable up to 4 handsets
(by purchase of optional Model 21920 handset with
recharge cradle). When 4 handsets are registered,
the system can handle 2 separate intercom
operations at once, for example, 1st handset
intercoms with 2nd handset while 3rd handset
intercoms with 4th handset.
Receiving an Intercom Call
When you receive an intercom call, your handset beeps. To answer
the call press the delete/int button or talk/end button.
NOTE: If you receive a telephone call during an
intercom call, the intercom call is immediately
terminated and both handsets ring. Either handset
user may press the talk/end button to answer the
call.
Using Intercom with External
Telephone Calls
During a telephone call, you may use the intercom/paging function
to;
• page another handset and have an off line, private (two-way)
intercom conversation,
• have a three-way conversation between the external caller and
the handsets,
• transfer the external telephone call to another handset.
1. During an external call, press the delete/int button. LINE ON
HOLD EXTENSION? shows in the display.
2. Use the touch-tone pad to select Handset #. You will hear a
paging tone and PAGING shows in the originating handset’s
display.
NOTE: PAGING FROM... shows in the display on
the receiving handset, and the receiving handset
presses the delete/int or talk/end button to answer
the intercom.
3. When the receiving handset connects;
a) You may have an off line, private (two-way) intercom
conversation, the external caller will not hear the conversation.
b) Press the redial/format/conf button on the originating
handset to have a three-way conversation with the receivi ng
handset and the external caller. CONFERENCE shows in the
display on the originating and receiving handsets.
NOTE: A handset can enter conference mode
directly by pressing talk/end on the second handset
during a call.
4. When finished, press the flash/exit button or delete/int button to
end the intercom call, return to the talk mode, and resume your
original telephone conversation or press the talk/end button on
the originating handset to transfer the call to the second handset
and end the call on the originating handset.

Changing the Battery

CAUTION: To reduce the risk of fire or personal
injury, use only the Thomson Inc. approved
model 5-2721 Nickel-metal Hydride battery
(Ni-MH), which is compatible with this unit.
1. Make sure the telephone is OFF (not in TALK mode) before you
replace the battery.
2. Remove the battery compartment door.
3. Disconnect the cord attached to the battery pack and remove the
battery pack from the handset.
4. Plug the battery pack cord into the jack inside the compartment
5. Put the battery compartment door back on.
6. Place handset in the base or handset charge cradle to charge.
Allow the handset battery to properly charge (for 16 hours)
prior to first use or when you install a new battery pack. If you
do not properly charge the phone, battery performance will be
compromised.

Battery Safety Precautions

• Do not burn, disassemble, mutilate, or puncture. Batteries of this
type could release toxic materials which can cause injury.
• To reduce the risk of fire or personal injury, use only the Nickel-
metal Hydride battery listed in the User’s Guide.
• Keep batteries out of the reach of children.
• Remove batteries if storing over 30 days.

Limited Warranty

What your warranty covers:
• Defects in materials or workmanship.
For how long after your purchase:
• One year, from date of purchase.
(The warranty period for rental units begins with the first rental
or 45 days from date of shipment to the rental firm, whichever
comes first.)
What we will do:
• Provide you with a new or, at our option, a refurbished unit.
The exchange unit is under warranty for the remainder of the
original product’s warranty period.
How you get service:
• Properly pack your unit. Include any cables, etc., which were
originally provided with the product. We recommend using the
original carton and packing materials.
• ”Proof of purchase in the form of a bill of sale or receipted
invoice which is evidence that the product is within the warranty
period, must be presented to obtain warranty service.” For rental
firms, proof of first rental is also required. Also print your name
and address and a description of the defect. Send via standard
UPS or its equivalent to:
Thomson Inc.
11721 B Alameda Ave.
Socorro, Texas 79927
• Pay any charges billed to you by the Exchange Center for
service not covered by the warranty.
• Insure your shipment for loss or damage. Thomson Inc. accepts
no liability in case of damage or loss.
• A new or refurbished unit will be shipped to you freight prepaid.
What your warranty does not cover:
• Customer instruction. (Your Owner’s Manual provides
information regarding operating instructions and user controls.
Any additional information, should be obtained from your
dealer.)
• Installation and setup service adjustments.
• Batteries.
• Damage from misuse or neglect.
• Products which have been modified or incorporated into other
products.
• Products purchased or serviced outside the USA.
• Acts of nature, such as but not limited to lightning damage.
Product Registration:
• Please complete and mail the Product Registration Card packed
with your unit. It will make it easier to contact you should it ever
be necessary. The return of the card is not required for warranty
coverage.
Limitation of Warranty:
The warranty stated above is the only warranty applicable
to this product. All other warranties, express or implied
(including all implied warranties of merchantability or fitness
for a particular purpose) are hereby disclaimed. No verbal
or written information given by Thomson Inc., its agents, or
employees shall create a guaranty or in any way increase the
scope of this warranty.
• Repair or replacement as provided under this warranty is the
exclusive remedy of the consumer. Thomson Inc. shall not be
liable for incidental or consequential damages resulting from
the use of this product or arising out of any breach of any
express or implied warranty on this product. This disclaimer
of warranties and limited warranty are governed by the laws
of the state of Indiana. Except to the extent prohibited by
applicable law, any implied warranty of merchantability or
fitness for a particular purpose on this product is limited to
the applicable warranty period set forth above.
How state law relates to this warranty:
• Some states do not allow the exclusion nor limitation of
incidental or consequential damages, or limitations on how long
an implied warranty lasts so the above limitations or exclusions
may not apply to you.
• This warranty gives you specific legal rights, and you also may
have other rights that vary from state to state.
If you purchased your product outside the USA:
• This warranty does not apply. Contact your dealer for warranty
information.
Thomson Inc.
101 West 103rd Street
Indianapolis, IN 46290-1102
© 2007 Thomson Inc.
Trademark(s) ® Registered
Marca(s) Registrada(s)
Handset
Battery
compartment
cover
Charge Cradle
Handset battery pack
NOTE: The RBRC seal on the battery used in your Thomson Inc. product
indicates that we are participating in a program to collect and recycle the
rechargeable battery (or batteries).
For more information go to the RBRC web site at www.rbrc.org
or call 1-800-8-BATTERY or contact a local recycling center.

Service

If trouble is experienced with this equipment, for repair or warranty
information, please contact customer service at 1-800-448-0329.
If the equipment is causing harm to the telephone network, the
telephone company may request that you disconnect the equipment
until the problem is resolved.
This product may be serviced only by the manufacturer or its
authorized service agents. Changes or modifications not expressly
approved by Thomson Inc. could void the user’s authority to operate
this product. For instructions on how to obtain service, refer to the
warranty included in this guide or call customer service at
1-800-448-0329.
Or refer inquiries to:
Thomson Inc.
Manager, Consumer Relations
P O Box 1976
Indianapolis, IN 46206
Attach your sales receipt to the booklet for future reference or jot
down the date this product was purchased or received as a gift. This
information will be valuable if service should be required during the
warranty period.
Purchase Date _________________________________
Name of Store _________________________________