AT&T MS2025 User manual

User’s manual
MS2025
DECT 6.0 4-line
Small Business Cordless Handset
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Congratulations
on your purchase of this AT&T product. Before using this AT&T product,
please read the Important safety information on pages 54- of this manual.
Please thoroughly read this user’s manual for all the feature operations and
troubleshooting information necessary to install and operate your new AT&T
product. You can also visit our website at www.telephones.att.com or
call 1 [phone]. In Canada, dial 1 [phone].
Model number: MS2025
Type: DECT 6.0 4-line Small Business Cordless Handset
Serial number:
Purchase date:
Place of purchase:
Both the model and serial numbers of your AT&T product can be found on the
bottom of the telephone base.
Save your sales receipt and original packaging in case it is necessary to return
your telephone for warranty service.
© 2010-2011 Advanced American Telephones. All Rights Reserved. AT&T and
the AT&T logo are trademarks of AT&T Intellectual Property licensed to
Advanced American Telephones, San Antonio, TX 78219. Printed in China.
SynJTM is a trademark of Advanced American Telephones.
T
Compatible with
Hearing Aid T-Coil
TIA-1083
Telephones identified with this logo have reduced noise and interference when
used with most T-coil equipped hearing aids and cochlear implants. The TIA-1083
Compliant Logo is a trademark of the Telecommunications Industry Association.
Used under license.
The ENERGY STAR® program (www.energystar.gov)
recognizes and encourages the use of products that
save energy and help protect our environment. We
are proud to supply this product with an ENERGY
STAR® qualified power adapter meeting the latest
energy efficiency guidelines.

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Parts checklist
Check to make sure the telephone package includes the following items:
Cordless handset
MS2025
User's manual
MS2025
Quick start
guide
User’s manual
MS2025
DECT 6.0 4-line
Small Business Corless Handset
Quick start guide
MS2025
DECT 6.0 4-line corded
Small Business Corless Handset
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Charger for
cordless handset
with power adapter
installed
Battery for
cordless handset
Battery compartment
cover

Table of contents
User’s manual
MS2025
DECT 6.0 4-line
Small Business Cordless Handset
Getting started
Quick reference guide .............................. 1
Charger installation.................................... 5
Battery installation and charging........ 6
Adding and registering a handset ...... 8
To register a handset to a MS2085
console......................................................... 8
To register a handset to a MS2015
deskset ......................................................... 9
Deregistering a handset.........................10
To deregister the cordless handset
or headset from the MS2085
console or MS2015 deskset ............10
Adding a corded headset......................11
Telephone settings
Telephone setup ........................................12
Menu settings..........................................12
Ringer volume.........................................13
Ringer tone...............................................13
Delay ring..................................................14
LCD Language.........................................14
Key Tone ....................................................15
LCD contrast ............................................15
Hold reminder .........................................16
Phone rename.........................................16
Telephone operation
Telephone basic operation...................17
Line indicators.........................................17
Making a call............................................17
On hook dialing (predialing)............18
Using the speakerphone....................18
Answering a call ....................................18
Temporary ringer silencing...............19
Redial...........................................................19
Call waiting...............................................20
Volume control .......................................20
Mute .............................................................20
Options while on calls............................21
Temporary tone dialing ......................21
Hold..............................................................21
Switching between lines....................21
Call privacy...............................................22
Record a call............................................23
Chain dialing............................................24
Join a call in progress.........................24
Conference calls ....................................25
Intercom.........................................................27
Make an intercom call to an
extension...................................................27
Answer an intercom call....................27
End an intercom call............................27
Answer an incoming call during an
intercom call............................................27
Call transfer .................................................28
Blind transfer...........................................28
Call transfer using intercom ................29
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Transfer a call and speak to the
receiving party........................................29
Answer a transferred call..................29
Voice page....................................................30
Page a single device............................30
Page all devices.....................................30
Answer a page........................................31
End a page ..............................................31
Directory
About the directory..................................32
Capacity .....................................................32
Exit the directory ...................................32
Create directory entries.........................33
Create a new directory entry ..........33
Review directory entries ....................34
Search directory.........................................35
Search by name .....................................35
Display dial ...............................................36
Delete an entry.......................................36
Edit an entry ............................................37
Caller ID
About the caller ID...................................38
Information about caller ID with call
waiting........................................................38
Caller ID information...............................39
How the caller ID information (call
log) works .................................................39
Caller ID operation...................................40
Memory match........................................40
Missed (new) calls indicator.............40
Review the caller ID information...40
View dialing options.............................41
Dial a call history entry......................41
Save a call history entry to the
directory.....................................................42
Delete entries..........................................43
Reasons for missing caller ID
information...............................................44
Answering system
Private mailbox setup .............................45
Announcement .......................................45
Delete all private mailbox messages
46
Record memo..........................................46
Record time..............................................46
Answering system operation...............47
New message indication....................47
Message playback.................................47
Options during playback....................47
Appendix
Handset screen icons..............................48
Alert tones and lights .............................49
Telephone base alert tones..............49
Maintenance.................................................53
Important safety information ..............54
Important safety information ..............54
FCC part 68 and ACTA............................57
FCC part 15..................................................58
Limited warranty........................................59
Technical specifications .........................68

1
Your product may be shipped with a protective sticker covering the handset
or telephone base display - remove it before use.
For customer service or product information, visit our website at
www.telephones.att.com or call 1 [phone]. In Canada, dial
1 [phone].
Avoid placing the telephone base too close to:
Communication devices such as television sets, VCRs, or other
cordless telephones.
Excessive heat sources.
Noise sources such as a window with traffic outside, motors, microwave
ovens, refrigerators, or fluorescent lighting.
Excessive dust sources such as a workshop or garage.
Excessive moisture.
Extremely low temperature.
Mechanical vibration or shock such as on top of a washing machine or
work bench.
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You must install and charge the
handset battery before using the
cordless handset.
See for easy instructions.
Getting started
Quick reference guide

2
Getting started
Quick reference guide
CHARGE light
On when the handset is charging in the telephone
base or charger.
Softkeys (2)
Press to select a menu item displayed above
the key.
While in a menu, press to select an item or save an
entry or setting.
LINE1/LINE2/LINE3/LINE4
Press to make or answer a call.
Flashes quickly when there is an incoming call.
Flashes slowly when a call is on hold.
Press to make or answer a home call.
During a home call, press to answer an incoming call
when you hear a call waiting alert.
Flashes quickly when there is an incoming
home call.
Flashes slowly when a home call is on hold.
INT
Press to make an intercom call.
1
While reviewing a caller ID history entry, press
repeatedly to add or remove 1 in front of the
telephone number before dialing or saving it in the
directory.
TONE
Press to switch to tone dialing temporarily
during a call if you have pulse service.
Press to toggle the name order when saving a caller
ID log entry into a directory.
/SPEAKER
Press to make or answer a home call using the
speakerphone.
Press to turn on the handset speakerphone.
Press again to resume normal handset use.
REDIAL/PAUSE
Press repeatedly to view the last 10 numbers dialed.
While entering numbers, press and hold to insert a
dialing pause.
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3
Getting started
Quick reference guide
VOL /DIR
Press to scroll up while in menus.
During a call or message playback, press to increase
the listening volume.
Press to show directory entries when the telephone
is not in use.
While entering names or numbers in the directory,
press to move the cursor to the left.
MUTE/DELETE
During a call, press to mute the microphone.
While predialing, press to delete digits.
While reviewing the redial list, directory or caller ID
history, press to delete an individual entry.
While entering or editing a directory entry, press to
erase a digit or character.
While the handset is ringing, press to silence the
ringer temporarily.
During message or announcement playback, press to
delete a message or announcement.
OFF/CANCEL
While using menus, press to cancel an operation,
back up to the previous menu, or exit the menu
display.
Press and hold to return to idle mode.
During a call, press to hang up.
Press and hold while the telephone is not in use to
erase the displayed messages (XX Missed calls).
While the handset is ringing, press to silence the
ringer temporarily.
VOL /CID
Press to scroll down while in menus.
During a call or message playback, press to decrease
the listening volume.
Press to show the caller ID history when the
telephone is not in use.
While entering names or numbers in the directory,
press to move the cursor to the right.
# (pound key)
Press repeatedly to display other dialing options
when reviewing a caller ID history entry.
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Getting started
Quick reference guide
Main menu
The >symbol highlights a menu item.
Main menu
Ringers ()
Phone Settings ()
Using menus
Press MENU/SELECT or MENU to show the first
menu item, Ringers.
Press or to scroll through menu items.
Press MENU/SELECT or SELECT to select or
save changes to a highlighted menu item.
Press EXIT to cancel an operation, exit the
menu display or return to the idle screen.
Press REP to back up to the previous menu.
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5
Plug the power adapter into an electrical out-
let not controlled by a wall switch.
Getting started
Charger installation

6
Install the battery as shown on . Once you have installed the battery, the
screen indicates the battery status (see the table below). If necessary, place
the handset in the telephone base or charger to charge the battery. For best
performance, keep the handset in the telephone base or charger when not in
use. The battery is fully charged after 16 hours of continuous charging. See
the table on for battery operating times.
If the screen shows Place in charger and flashes, you need to charge the
handset without interruption for at least 30 minutes to give the handset
enough charge to use the telephone for a short time. The following table
summarizes the battery charge indicators and actions to take.
Battery indicators Battery status Action
The screen is blank or
shows Place in charger
and flashes.
The battery has no or very little
charge. The handset cannot be used.
Charge without interruption
(at least 30 minutes).
The screen shows
Low battery and
flashes.
Battery has enough charge to be
used for a short time.
Charge without interruption
(at least 30 minutes).
The screen shows
HANDSET X.
Battery is charged. To keep the battery
charged, place it in the
telephone base or charger
when not in use.
NOTE: If you are on a phone call in low battery mode, you hear four short beeps
every minute.
Getting started
Battery installation and charging

7
Getting started
Battery installation and charging
Plug the battery connector securely
into the socket inside the handset
battery compartment. Insert the
supplied battery with the label
THIS SIDE UP facing up as indicated.
1. Align the cover flat against
the battery compartment, then
slide it upwards until it clicks
into place.
2.
Install the battery as shown below.
Charge the handset by placing
it face up in the charger. The
CHARGE light is on when
charging.
3.
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The CHARGE light
IMPORTANT INFORMATION
Use only the supplied rechargeable battery or replacement battery (model BT183342). To order a
replacement power adapter, visit our website at www.telephones.att.com, or call
1 [phone]. In Canada, dial 1 [phone].
If you do not use the handset for a long time, disconnect and remove the battery to prevent pos-
sible leakage.
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8
You can add a new handset to your telephone system, but it must be registered
with the MS2085 console or MS2025 deskset before use. Each MS2085 or MS2025
supports one cordless handset. When first purchased, the expansion handset
shows Choose Handset in Registration at base menu. And put handset on
cradle to register.
If the handset does not have enough power to proceed with the registration, you
need to charge the new handset for at least five minutes (see Battery installation
and charging on page 6). Start registration when the handset screen shows
Choose Handset in Registration at base menu. And put handset on cradle to
register.
To register a handset to a MS2085 console
Make sure the cordless handset is out of the charger and the screen
shows Choose Handset in Registration at base menu. And put handset
on cradle to register.
On the MS2085 console, press MENU/SELECT.
Scroll down to Registration and press MENU/SELECT.
Press MENU/SELECT again to select Handset. The MS2085 console screen
shows Registering handset... (Put handset on cradle to start).
Place the unregistered handset into the charger. The handset beeps once
and begins registering to the MS2085 console. It takes up to 60 seconds
to complete the registration. There is a beep sound when the registration
is successful. The MS2085 console shows Handset registered and then the
handset shows EXT XX (Xrepresents the extension number).
NOTES:
If the registration is not successful, the console screen displays Registration failed with an
error tone. To reset the handset, remove the handset from the charger. Try the registration
process again.
Make sure to remove all unregistered system handsets or cordless headset from the charger
before registering a new handset.
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Getting started
Adding and registering a handset

9
Getting started
Adding and registering a handset
To register a handset to a MS2015 deskset
Make sure the cordless handset is out of the charger and the screen
shows Choose Handset in Registration at base menu. And put handset
on cradle to register.
On the MS2015 deskset, press MENU/SELECT.
Scroll down to Registration and press MENU/SELECT.
Press MENU/SELECT again to select Handset. The MS2015 deskset screen
shows Registering handset... (Put handset on cradle to start).
Place the unregistered handset into the charger. The handset beeps once
and begins registering to the MS2015 deskset. It takes up to 60 seconds
to complete the registration. There is a beep sound when the registration
is successful. The MS2015 deskset shows Handset registered and then the
handset shows EXT XX (Xrepresents the extension number).
NOTES:
If the registration is not successful, the deskset screen displays Registration failed with an
error tone. To reset the handset, remove the handset from the charger. Try the registration
process again.
Make sure to remove all unregistered system handsets or cordless headset from the charger
before registering a new handset.
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10
NOTES:
If the deregistration process is not successful, you might need to reset the system and
try again. To reset, you can press CANCEL on the telephone base. You can also reset the
telephone base by unplugging the power from the telephone base and plugging it back in.
To register a cordless handset again, refer to the registration information on pages 8-9.
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You may need to deregister your cordless handset or headset when you have
a registered handset or headset and need to replace one. Please read all
the instructions on this page before beginning the deregistration process.
Please make sure the telephone system is not in use before deregistration.
To deregister the cordless handset or headset from the MS2085 console
or MS2015 deskset
On the console or deskset, press MENU/SELECT.
Scroll down to Registration and press MENU/SELECT.
Scroll down to Deregistration and press MENU/SELECT.
Press MENU/SELECT.
Press MENU/SELECT to choose Handset.
-OR-
Press or to choose DECT Headset.
The screen shows Deregister Handset? Press <SELECT> to confirm if you
selected HANDSET, or Deregister DECT Headset? Press <SELECT> to
confirm if you selected DECT Headset. Press MENU/SELECT to confirm.
The console shows Deregistering. It takes up to 10 seconds to complete
the deregistration.
If you are deregistering the cordless handset, the console shows
Handset deregistered and a confirmation tone when the deregistration
is successful.
If you are deregistering the DECT headset, the console shows DECT
Headset deregistered and a confirmation tone when the deregistration
is successful.
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Getting started
Deregistering a handset

11
You can use this handset handsfree when you install any industry-standard
2.5mm corded telephone headset (purchased separately). For best results,
use an AT&T 2.5mm corded headset. To purchase a headset, visit our website
at www.telephones.att.com, or call 1 [phone]. In Canada,
dial 1 [phone]. See for instructions on using the corded headset
with this handset.
Getting started
Adding a corded headset

12
Menu settings
Use this menu to change the handset settings.
Press MENU/SELECT or MENU when in idle mode (when the telephone istelephone isis
not in use) to enter the main menu.
Press or to highlight the feature to be changed.to highlight the feature to be changed.
The highlighted indicates the selected menu item.
Press MENU/SELECT or the softkey to select the menu item.to select the menu item.
Press OFF/CANCEL to exit setup without making changes.
NOTE: Press OFF/CANCEL to cancel an operation, exit the menu display, or return to idle
mode.
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Telephone settings
Telephone setup

13
Telephone settings
Telephone setup
Ringer volume
Use this feature to set the ringer volume to one of six levels or turn the ringer
off. When the ringer is off, the icon appears on the handset screen. The
handset stores the volume setting for all lines.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Ringers then press MENU/SELECT.
Press MENU/SELECT again to select Ringer volume.
Press or on the handset to adjust the ringer volume.
Press MENU/SELECT or SET to save the setting and return to the previous
menu. There is a confirmation tone. To exit without making changes, press
OFF/CANCEL.
NOTE: The ringer volume also determines the ringer volume for intercom calls (). If the
handset ringer volume is set to off, that handset is silenced for all incoming calls, including
intercom calls.
Ringer tone
Use this feature to choose one of the ten ringer tones for incoming calls. You
can choose different ringer tones for different lines so you can easily identify
which line is calling.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Ringers then press MENU/SELECT.
Press or to highlight Ringer tone then press MENU/SELECT.
Press or to select the desired line (Line 1,Line 2,Line 3 or Line 4),
then press MENU/SELECT.
Press or to select a desired ringer tone.
Repeat steps 4-5 above to choose ringer tones for other lines if desired.
Press MENU/SELECT or SET to save the setting and return to the previous
menu. There is a confirmation tone. To exit without making changes, press
OFF/CANCEL.
NOTE: If you turn off the ringer volume, you will not hear ringer
tone samples.
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Telephone settings
Telephone setup
Delay ring
Use this feature to set the length of time before an incoming call will ring.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Ringers then press MENU/SELECT.
Press or to highlight Delay ring then press MENU/SELECT.
Press or to select a desired line (Line 1,Line 2,Line 3 or Line 4),
then press MENU/SELECT.
Press or to highlight the desired time (2 seconds to 30 seconds).
Press MENU/SELECT or SET to save the setting and return to the previous
menu. You hear a confirmation tone. To exit without making changes, press
OFF/CANCEL.
LCD Language
This feature allows you to change the language used for handset displays.
The language settings on the console and desksets are independent. By
default, the language is set to English.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Phone Settings then press MENU/SELECT.
Press or to highlight LCD Language then press MENU/SELECT.
Press or to highlight English,Français or Español.
Press MENU/SELECT or SET to save the setting and return to the previous
menu. You hear a confirmation tone. To exit without making changes, press
OFF/CANCEL.
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15
Telephone settings
Telephone setup
Key Tone
The handset is set to beep with each key press. If you turn off the key tone,
there are no beeps when you
press keys.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Phone Settings then press MENU/SELECT.
Press or to highlight Key Tone then press MENU/SELECT.
Press or to highlight On or Off.
Press MENU/SELECT or SET to save the setting and return to the previous
menu. You hear a confirmation tone. To exit without making changes, press
OFF/CANCEL.
LCD contrast
Use this feature to adjust the screen contrast to one of eight levels to
optimize readability in different lighting conditions.
When the handset is idle, press MENU/SELECT or MENU.
Press or to highlight Phone Settings then press MENU/SELECT.
Press or to highlight LCD Contrast then press MENU/SELECT.
Press or to highlight the desired screen contrast level (Level 1 -
Level 8).
Press MENU/SELECT or SET to save the setting and return to the previous
menu. You hear a confirmation tone. To exit without making changes, press
OFF/CANCEL.
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