background image

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 Guide

for 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  

4

2NO 

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 receiving 
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 _________________________________

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