BT BT3920 User manual

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

Answer machine
Your answer machine is on and ready to record messages. The controls are shown in the
base diagram to the bottom left and the features can also be accessed via the handset
Answer phone menu.
Recording your own outgoing message
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Outgoing msg is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display either:
Ans & Record or Answer only and select .
Press Vol.
Calls
or
Vol.
Calls to display
Record msg and select . Follow the voice prompt
in the handset earpiece to record your message and select when you’ve finished.
Your message will be played back to you.
Set the answer delay
For compatibility with BT 1571 or another voicemail service make sure the answer
delay is set for your answer machine to answer before the voicemail service, e.g. for BT
1571 do not set to more than 6 rings.
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Answer delay is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display the number of rings you want (2-9) or Time saver and select
to save your setting.
For detailed instructions on all the answer machine features see the full user guide
online at bt.com/producthelp
3 Go!
Set time and date
Select Menu, scroll
Vol.
Calls to
HS settings and select using the left option button.
Date and time is displayed, select .
Press
Vol.
Calls to display
Set time and select . Enter the time in 24 hr format, 2 digits
for the hour and 2 for the minute then select .
Press
Vol.
Calls ,
Set date is displayed, select .Enter the date in dd-mm-yy format and select .
After each , you will hear a confirmation tone and your information will be saved.
Making calls
Press then dial the phone number. Press to end the call.
Answering calls
If you have subscribed to Caller Display, the caller’s details will be displayed before
you answer (see below and also the full user guide online at bt.com/producthelp
for details).
Lift the handset from the base or charger to answer incoming calls. If the handset is not
on the base or charger, press .
Mute
Select
Mute by pressing the right option button during a call if you want to prevent the
caller hearing anything from your end. Select Unmute to return to your caller.
Redial (up to last 20 numbers called)
Press Vol.
Calls
to open the list of most recently dialled numbers. Press Vol.
Calls
or
Vol.
Calls to scroll
through the list.
Press to redial the number displayed or select Menu by pressing the left option
button to access the menu options.
Contacts
Storing new contacts (up to 50)
From standby, press . The first entry or List empty will be displayed.
Select Menu by pressing the left option button.
Add is displayed, select .
Name is displayed. Enter the name using the letters on the keypad and select .
You may need to press the same button a few times until the letter you want is
displayed, for example, press AB
C once for A, or twice for B.
Number is displayed. Enter the phone number and select to save.
If you make a mistake, select Del to delete the last digit or letter entered.
Dialling a contact
Press . Scroll Vol.
Calls
or
Vol.
Calls to the entry you want. Press to dial.
Or, search alphabetically using the keypad to enter the first letter of the name you want
then scroll Vol.
Calls
or
Vol.
Calls to the exact entry and press to dial.
Caller Display and the Calls list
You must subscribe to a Caller Display service for this feature to work. Your network
provider may charge you for this service.
View and dial from the Calls list
When incoming calls have been missed the number of new calls will be shown e.g.
3 new calls . The notifications can be cleared by viewing all of the handsets registered
to the base. The will still be presented for missed calls, so that you can differentiate
between calls in the calls list.
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to scroll through the last 50 incoming calls.
To dial an entry, press when the entry is highlighted.
Copy a Calls list number to your contacts
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to the entry you want and select .
Press Menu, scroll
Vol.
Calls until
Store number is displayed and select . Name is displayed.
Enter a name using the keypad and select . The number is displayed, select
to confirm.
Your phone
Handset
Base
Green In use light
On when base is connected
to power. Flashes when
phone rings, during a call
and registration.
Red charging light
On when handset is in
the base charging. Press to locate a handset,
also used for adding new
handsets to the base.
Adjust speaker volume
during playback.
Turn answer machine on/off.
Red light on the button is
on when the answer
machine is on.
Green light on the button
flashes when there are
new messages.
Press to play messages.
During playback, press to
delete message playing.
In idle, press and hold to
delete all old messages.
Stop message
during playback.
Skip forward during
message playback.
Repeat current
message.
Press twice to skip
to previous message.
The answer machine handset controls on buttons AB
C GH
I JK and MN O will only
work when a message is being played on the handset.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Home screen
Left option button
Press to enter the main menu,
access sub menus and confirm
options shown on the display
above the button.
Vol.
Calls
Enter Redial list and move
up menu options.
Increase volume through
the ear piece during a call.
Access your stored Contacts.
Make /receive phone calls.
Vol.
Calls
Enter Calls list and move
down menu options.
Decrease volume through
the ear piece during a call
In standby, press and hold to dial
BT 1571 or your network’s
voicemail service.
AB
C
Stop playback of current message.
GH
I
Once to replay message.
Twice to skip back to
previous message.
Right option button
Press to confirm the option
displayed on the screen above the
button, to delete or go back to the
previous screen.
R (Recall) used when connected to
a switchboard/PBX and with some
BT Calling Features.
End a call.
Press and hold for 5 seconds to
turn handset on/off.
MN
O
Skip to next message.
JK
Delete message.
Press and hold to turn the ringer
on or off.
Press and hold to lock/unlock keypad.
Toggle between upper and lower
case characters.
AB
C to
WX
YZ
Speed dial buttons
In standby, press and hold to dial a
stored speed dial number.
ADSL
microfilter
Find out more
• Frequently Asked Questions are available at bt.com/producthelp
• If you’d like detailed instructions, a full user guide is available to
download from bt.com/producthelp
• If you cannot find the answer to your problem in the full online user guide,
then please call our free Helpline on 0800 218 2182* . Our dedicated
advisors are more likely to be able to help you than the retailer where you
made your purchase.
• This document is also available in other formats, such as Large print, Braille
and Audio CD. If you would like a copy, please call 0800 218 2182*.
Help
Most problems can be fixed with a few simple checks.
Problem Solution
No dial tone Only use the cables and batteries supplied.
Make sure both the mains power adaptor cable and
telephone line cord are plugged into the correct sockets.
Poor speech quality Make sure the product is not located too close to other
electrical appliances. This can also help improve the
handset range from the base.
Battery icon flashing
and scrolling digits
The battery charge is very low. Make sure you charge the
batteries for 24 hours before use to ensure maximum
battery performance.
Using broadband on the same
phone line?
Make sure you plug the phone
into the wall socket via an ADSL
microfilter (not supplied), otherwise
you may have problems with this
product and your broadband service.
If you use BT Infinity, you will not need to use an ADSL microfilter.
For other types of broadband, please check with your
provider if a microfilter is required.
Answer machine not
answering calls
Check the answer machine is on and set to Answer &
Record. Check that the answer delay is set to answer
before any voicemail service on the line. For BT 1571 do
not set the answer delay to more than 6 rings.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

Answer machine
Your answer machine is on and ready to record messages. The controls are shown in the
base diagram to the bottom left and the features can also be accessed via the handset
Answer phone menu.
Recording your own outgoing message
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Outgoing msg is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display either:
Ans & Record or Answer only and select .
Press Vol.
Calls
or
Vol.
Calls to display
Record msg and select . Follow the voice prompt
in the handset earpiece to record your message and select when you’ve finished.
Your message will be played back to you.
Set the answer delay
For compatibility with BT 1571 or another voicemail service make sure the answer
delay is set for your answer machine to answer before the voicemail service, e.g. for BT
1571 do not set to more than 6 rings.
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Answer delay is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display the number of rings you want (2-9) or Time saver and select
to save your setting.
For detailed instructions on all the answer machine features see the full user guide
online at bt.com/producthelp
3 Go!
Set time and date
Select Menu, scroll
Vol.
Calls to
HS settings and select using the left option button.
Date and time is displayed, select .
Press
Vol.
Calls to display
Set time and select . Enter the time in 24 hr format, 2 digits
for the hour and 2 for the minute then select .
Press
Vol.
Calls ,
Set date is displayed, select .Enter the date in dd-mm-yy format and select .
After each , you will hear a confirmation tone and your information will be saved.
Making calls
Press then dial the phone number. Press to end the call.
Answering calls
If you have subscribed to Caller Display, the caller’s details will be displayed before
you answer (see below and also the full user guide online at bt.com/producthelp
for details).
Lift the handset from the base or charger to answer incoming calls. If the handset is not
on the base or charger, press .
Mute
Select
Mute by pressing the right option button during a call if you want to prevent the
caller hearing anything from your end. Select Unmute to return to your caller.
Redial (up to last 20 numbers called)
Press Vol.
Calls
to open the list of most recently dialled numbers. Press Vol.
Calls
or
Vol.
Calls to scroll
through the list.
Press to redial the number displayed or select Menu by pressing the left option
button to access the menu options.
Contacts
Storing new contacts (up to 50)
From standby, press . The first entry or List empty will be displayed.
Select Menu by pressing the left option button.
Add is displayed, select .
Name is displayed. Enter the name using the letters on the keypad and select .
You may need to press the same button a few times until the letter you want is
displayed, for example, press AB
C once for A, or twice for B.
Number is displayed. Enter the phone number and select to save.
If you make a mistake, select Del to delete the last digit or letter entered.
Dialling a contact
Press . Scroll Vol.
Calls
or
Vol.
Calls to the entry you want. Press to dial.
Or, search alphabetically using the keypad to enter the first letter of the name you want
then scroll Vol.
Calls
or
Vol.
Calls to the exact entry and press to dial.
Caller Display and the Calls list
You must subscribe to a Caller Display service for this feature to work. Your network
provider may charge you for this service.
View and dial from the Calls list
When incoming calls have been missed the number of new calls will be shown e.g.
3 new calls . The notifications can be cleared by viewing all of the handsets registered
to the base. The will still be presented for missed calls, so that you can differentiate
between calls in the calls list.
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to scroll through the last 50 incoming calls.
To dial an entry, press when the entry is highlighted.
Copy a Calls list number to your contacts
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to the entry you want and select .
Press Menu, scroll
Vol.
Calls until
Store number is displayed and select . Name is displayed.
Enter a name using the keypad and select . The number is displayed, select
to confirm.
Your phone
Handset
Base
Green In use light
On when base is connected
to power. Flashes when
phone rings, during a call
and registration.
Red charging light
On when handset is in
the base charging. Press to locate a handset,
also used for adding new
handsets to the base.
Adjust speaker volume
during playback.
Turn answer machine on/off.
Red light on the button is
on when the answer
machine is on.
Green light on the button
flashes when there are
new messages.
Press to play messages.
During playback, press to
delete message playing.
In idle, press and hold to
delete all old messages.
Stop message
during playback.
Skip forward during
message playback.
Repeat current
message.
Press twice to skip
to previous message.
The answer machine handset controls on buttons AB
C GH
I JK and MN O will only
work when a message is being played on the handset.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Home screen
Left option button
Press to enter the main menu,
access sub menus and confirm
options shown on the display
above the button.
Vol.
Calls
Enter Redial list and move
up menu options.
Increase volume through
the ear piece during a call.
Access your stored Contacts.
Make /receive phone calls.
Vol.
Calls
Enter Calls list and move
down menu options.
Decrease volume through
the ear piece during a call
In standby, press and hold to dial
BT 1571 or your network’s
voicemail service.
AB
C
Stop playback of current message.
GH
I
Once to replay message.
Twice to skip back to
previous message.
Right option button
Press to confirm the option
displayed on the screen above the
button, to delete or go back to the
previous screen.
R (Recall) used when connected to
a switchboard/PBX and with some
BT Calling Features.
End a call.
Press and hold for 5 seconds to
turn handset on/off.
MN
O
Skip to next message.
JK
Delete message.
Press and hold to turn the ringer
on or off.
Press and hold to lock/unlock keypad.
Toggle between upper and lower
case characters.
AB
C to
WX
YZ
Speed dial buttons
In standby, press and hold to dial a
stored speed dial number.
ADSL
microfilter
Find out more
• Frequently Asked Questions are available at bt.com/producthelp
• If you’d like detailed instructions, a full user guide is available to
download from bt.com/producthelp
• If you cannot find the answer to your problem in the full online user guide,
then please call our free Helpline on 0800 218 2182* . Our dedicated
advisors are more likely to be able to help you than the retailer where you
made your purchase.
• This document is also available in other formats, such as Large print, Braille
and Audio CD. If you would like a copy, please call 0800 218 2182*.
Help
Most problems can be fixed with a few simple checks.
Problem Solution
No dial tone Only use the cables and batteries supplied.
Make sure both the mains power adaptor cable and
telephone line cord are plugged into the correct sockets.
Poor speech quality Make sure the product is not located too close to other
electrical appliances. This can also help improve the
handset range from the base.
Battery icon flashing
and scrolling digits
The battery charge is very low. Make sure you charge the
batteries for 24 hours before use to ensure maximum
battery performance.
Using broadband on the same
phone line?
Make sure you plug the phone
into the wall socket via an ADSL
microfilter (not supplied), otherwise
you may have problems with this
product and your broadband service.
If you use BT Infinity, you will not need to use an ADSL microfilter.
For other types of broadband, please check with your
provider if a microfilter is required.
Answer machine not
answering calls
Check the answer machine is on and set to Answer &
Record. Check that the answer delay is set to answer
before any voicemail service on the line. For BT 1571 do
not set the answer delay to more than 6 rings.

Answer machine
Your answer machine is on and ready to record messages. The controls are shown in the
base diagram to the bottom left and the features can also be accessed via the handset
Answer phone menu.
Recording your own outgoing message
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Outgoing msg is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display either:
Ans & Record or Answer only and select .
Press Vol.
Calls
or
Vol.
Calls to display
Record msg and select . Follow the voice prompt
in the handset earpiece to record your message and select when you’ve finished.
Your message will be played back to you.
Set the answer delay
For compatibility with BT 1571 or another voicemail service make sure the answer
delay is set for your answer machine to answer before the voicemail service, e.g. for BT
1571 do not set to more than 6 rings.
Select Menu,
Answer phone is displayed, select .
Press
Vol.
Calls until
Ans settings is displayed and select .
Press
Vol.
Calls until
Answer delay is displayed and select .
Press Vol.
Calls
or
Vol.
Calls to display the number of rings you want (2-9) or Time saver and select
to save your setting.
For detailed instructions on all the answer machine features see the full user guide
online at bt.com/producthelp
3 Go!
Set time and date
Select Menu, scroll
Vol.
Calls to
HS settings and select using the left option button.
Date and time is displayed, select .
Press
Vol.
Calls to display
Set time and select . Enter the time in 24 hr format, 2 digits
for the hour and 2 for the minute then select .
Press
Vol.
Calls ,
Set date is displayed, select .Enter the date in dd-mm-yy format and select .
After each , you will hear a confirmation tone and your information will be saved.
Making calls
Press then dial the phone number. Press to end the call.
Answering calls
If you have subscribed to Caller Display, the caller’s details will be displayed before
you answer (see below and also the full user guide online at bt.com/producthelp
for details).
Lift the handset from the base or charger to answer incoming calls. If the handset is not
on the base or charger, press .
Mute
Select
Mute by pressing the right option button during a call if you want to prevent the
caller hearing anything from your end. Select Unmute to return to your caller.
Redial (up to last 20 numbers called)
Press Vol.
Calls
to open the list of most recently dialled numbers. Press Vol.
Calls
or
Vol.
Calls to scroll
through the list.
Press to redial the number displayed or select Menu by pressing the left option
button to access the menu options.
Contacts
Storing new contacts (up to 50)
From standby, press . The first entry or List empty will be displayed.
Select Menu by pressing the left option button.
Add is displayed, select .
Name is displayed. Enter the name using the letters on the keypad and select .
You may need to press the same button a few times until the letter you want is
displayed, for example, press AB
C once for A, or twice for B.
Number is displayed. Enter the phone number and select to save.
If you make a mistake, select Del to delete the last digit or letter entered.
Dialling a contact
Press . Scroll Vol.
Calls
or
Vol.
Calls to the entry you want. Press to dial.
Or, search alphabetically using the keypad to enter the first letter of the name you want
then scroll Vol.
Calls
or
Vol.
Calls to the exact entry and press to dial.
Caller Display and the Calls list
You must subscribe to a Caller Display service for this feature to work. Your network
provider may charge you for this service.
View and dial from the Calls list
When incoming calls have been missed the number of new calls will be shown e.g.
3 new calls . The notifications can be cleared by viewing all of the handsets registered
to the base. The will still be presented for missed calls, so that you can differentiate
between calls in the calls list.
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to scroll through the last 50 incoming calls.
To dial an entry, press when the entry is highlighted.
Copy a Calls list number to your contacts
Press
Vol.
Calls , then Vol.
Calls
or
Vol.
Calls to the entry you want and select .
Press Menu, scroll
Vol.
Calls until
Store number is displayed and select . Name is displayed.
Enter a name using the keypad and select . The number is displayed, select
to confirm.
Your phone
Handset
Base
Green In use light
On when base is connected
to power. Flashes when
phone rings, during a call
and registration.
Red charging light
On when handset is in
the base charging. Press to locate a handset,
also used for adding new
handsets to the base.
Adjust speaker volume
during playback.
Turn answer machine on/off.
Red light on the button is
on when the answer
machine is on.
Green light on the button
flashes when there are
new messages.
Press to play messages.
During playback, press to
delete message playing.
In idle, press and hold to
delete all old messages.
Stop message
during playback.
Skip forward during
message playback.
Repeat current
message.
Press twice to skip
to previous message.
The answer machine handset controls on buttons AB
C GH
I JK and MN O will only
work when a message is being played on the handset.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Home screen
Left option button
Press to enter the main menu,
access sub menus and confirm
options shown on the display
above the button.
Vol.
Calls
Enter Redial list and move
up menu options.
Increase volume through
the ear piece during a call.
Access your stored Contacts.
Make /receive phone calls.
Vol.
Calls
Enter Calls list and move
down menu options.
Decrease volume through
the ear piece during a call
In standby, press and hold to dial
BT 1571 or your network’s
voicemail service.
AB
C
Stop playback of current message.
GH
I
Once to replay message.
Twice to skip back to
previous message.
Right option button
Press to confirm the option
displayed on the screen above the
button, to delete or go back to the
previous screen.
R (Recall) used when connected to
a switchboard/PBX and with some
BT Calling Features.
End a call.
Press and hold for 5 seconds to
turn handset on/off.
MN
O
Skip to next message.
JK
Delete message.
Press and hold to turn the ringer
on or off.
Press and hold to lock/unlock keypad.
Toggle between upper and lower
case characters.
AB
C to
WX
YZ
Speed dial buttons
In standby, press and hold to dial a
stored speed dial number.
ADSL
microfilter
Find out more
• Frequently Asked Questions are available at bt.com/producthelp
• If you’d like detailed instructions, a full user guide is available to
download from bt.com/producthelp
• If you cannot find the answer to your problem in the full online user guide,
then please call our free Helpline on 0800 218 2182* . Our dedicated
advisors are more likely to be able to help you than the retailer where you
made your purchase.
• This document is also available in other formats, such as Large print, Braille
and Audio CD. If you would like a copy, please call 0800 218 2182*.
Help
Most problems can be fixed with a few simple checks.
Problem Solution
No dial tone Only use the cables and batteries supplied.
Make sure both the mains power adaptor cable and
telephone line cord are plugged into the correct sockets.
Poor speech quality Make sure the product is not located too close to other
electrical appliances. This can also help improve the
handset range from the base.
Battery icon flashing
and scrolling digits
The battery charge is very low. Make sure you charge the
batteries for 24 hours before use to ensure maximum
battery performance.
Using broadband on the same
phone line?
Make sure you plug the phone
into the wall socket via an ADSL
microfilter (not supplied), otherwise
you may have problems with this
product and your broadband service.
If you use BT Infinity, you will not need to use an ADSL microfilter.
For other types of broadband, please check with your
provider if a microfilter is required.
Answer machine not
answering calls
Check the answer machine is on and set to Answer &
Record. Check that the answer delay is set to answer
before any voicemail service on the line. For BT 1571 do
not set the answer delay to more than 6 rings.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.

General information
For information on safety instructions,
cleaning, technical information or
connecting to a switchboard, please
refer to the ‘General Information’
section in the full user guide at
bt.com/producthelp
Guarantee
Your BT3920 is guaranteed for a period of 12 months
from the date of purchase.
Subject to the terms listed below, the guarantee
will provide for the repair of, or at BT’s or its agent’s
discretion the option to replace the BT3920, or any
component thereof, (other than batteries), which is
identified as faulty or below standard, or as a result of
inferior workmanship or materials. Products over 28
days old from the date of purchase may be replaced
with a refurbished or repaired product.
The conditions of this guarantee are:
• The guarantee shall only apply to defects that
occur within the 12 month guarantee period.
• Proof of purchase is required.
• The equipment is returned to BT or its agent
as instructed.
This guarantee does not cover any faults or defects
caused by accidents, misuse, fair wear and tear,
neglect, tampering with the equipment, or any
attempt at adjustment or repair other than through
approved agents.
This guarantee does not affect your statutory rights.
To find out what to do, if your phone is in or outside
of the 12 month guarantee, please look in the full user
guide at bt.com/producthelp
Product disposal instructions
The symbol shown here and on the product
means that the product is classed as Electrical or
Electronic Equipment and should not be disposed with
other household or commercial waste at the end of its
working life.
The Waste of Electrical and Electronic Equipment
(WEEE) Directive (2002/96/EC) has been put in place
to recycle products using best available recovery and
recycling techniques to minimise the impact on the
environment, treat any hazardous substances and
avoid the increasing landfill.
Product disposal instructions for residential users
When you have no further use for your phone,
please remove any batteries and dispose of them
and the product as per your local authority’s recycling
processes. For more information please contact
your local authority or the retailer where the product
was purchased.
Product disposal instructions for business users
Business users should contact their suppliers and check
the terms and conditions of the purchase contract
and ensure that this product is not mixed with other
commercial waste for disposal.
Warning
You won’t be able to call 999 from this phone if there’s
a power cut, so make sure you’ve got another way to
call for help in an emergency.
R&TTE Directive & Declaration of Conformity
This product is intended for use within the UK for
connection to the public telephone network and
compatible switchboards.
This equipment complies with the essential requirements
for the Radio Equipment and Telecommunications
Terminal Equipment Directive (1999/5/EC).
For a copy of the Declaration of Conformity
please refer to bt.com/producthelp
2 Charge
1 Remove the protective film from the handset screen
and the base lens and activate the batteries by pulling
the plastic tab away from the back of the handset.
2 Place the handset on the base to charge.
3 After 24 hours, plug the telephone line cord into the
telephone wall socket.
Important: We recommend that you charge the handset batteries
for 24 hours before first use.
Set up your additional handsets (multipacks only)
1 For each additional handset and charger: plug the mains power adaptor (item code
066773) into the socket on the back of the charger, secure the cable behind the
retaining clip and plug the other end into the mains wall socket and switch the
power on.
2 Remove the protective film from the handset screen and activate the batteries as
shown above.
3 Place the handset on the charger to charge for 24 hours.
If you ever need to remove the batteries, simply slide open the battery
compartment cover and ease them out.
Your BT3920 is now ready for use.
Please
turn
over
Check box contents
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Mains power adaptor
(item code 066773)
Telephone line cord
(pre-installed)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Base
1 Plug in
Rechargeable batteries
already fitted
Remove this tab
and charge batteries
for 24 hours before use.
Important: Only use the mains power adaptors, cables and rechargeable batteries
supplied in this box, or this product may not work. Any replacement rechargeable
batteries must be of the same type. BT accepts no responsibility for damage
caused to your BT3920 by using any other type of batteries.
AB
C
GH
IJK
TU
V
MN
O
DE
PQ
RS
WX
YZ
Vol.
Calls
R
Menu Intercom
Handset 1
3.22pm 03/11
Handset Charger Mains power adaptor
(item code 066773)
2x AAA NiMH 500mAh
rechargeable batteries
(already in handset)
Contents for each additional handset (multipacks only)
2
3
1 The telephone line cord is already fitted
but don’t plug the other end into the
wall socket yet.
2 Plug the mains power adaptor (item
code 066773) into the base, and clip
the cable into the grooves provided.
3 Plug the other end of the power
adaptor into the wall socket and
switch on.
1
Offices worldwide
The services described in this publication are subject to availability and may be
modified from time to time. Services and equipment are supplied subject to
British Telecommunications plc’s respective standard conditions of contract.
Nothing in this publication forms any part of a contract.
© British Telecommunications plc 2012.
Registered Office: 81 Newgate Street, London EC1A 7AJ.
Registered in England No. 1800000.
Designed and produced by The Art & Design Partnership Ltd.
Printed in China / Issue 2 / ADP11-12
10%
For a Better Future
We’re always looking to make our products last longer
and use less power, so we don’t have such a big impact
on the environment.
To find out about what we are doing, visit
bt.com/betterfuture
1 Plug in
2 Charge
3 Go!
If you’d like further help, or to view the full user guide, please visit our website
bt.com/producthelp or call our helpdesk on 0800 218 2182*
* Calls made from within the UK mainland network are free. Mobile and International call costs may vary.
User Guide
BT3920
Digital Cordless Phone with Answering Machine
Setting up is easy. Just follow the simple steps in this guide.