AT&T MS2025 User manual

User’s manual
MS2025 4-line
Small Business Cordless Handset
+06 1((
%#0%'.

Congratulations
on your purchase of this AT&T product. Before using this AT&T
product, please read the Important safety information on
pages 54-56 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: 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.
© 2012 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.
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.

+06 1((
%#0%'.
Parts checklist
Your telephone package contains the following items. Save
your sales receipt and original packaging in the event warranty
service is necessary.
Cordless handset
MS2025
User's manual
MS2025
Quick start guide
Charger for cordless
handset with power
adapter installed
Battery for cordless
handset
Battery compartment
cover
+06 1((
%#0%'.
User’s manual
MS2025 4-line
Small Business Cordless Handset
+06 1((
%#0%'.
Quick start guide
MS2025 4-line
Small Business Cordless Handset

Table of contents
User’s manual
MS2025 4-Line
Small Business Cordless Handset
Getting started
Installation....................................... 1
Quick reference guide ............... 2
Charger installation..................... 5
Battery installation and
charging........................................ 6
Adding and registering a
handset.......................................... 8
To register a handset to
your MS2015 deskset............. 9
Deregistering a handset..........10
To deregister the cordless
handset from the MS2015
deskset ........................................10
Adding a corded headset.......11
Telephone settings
Telephone setup .........................12
Menu settings...........................12
Ringer volume..........................13
Ringer melodies ......................14
Language....................................15
Home area code......................16
Key tone......................................17
LCD contrast .............................17
Extension number ..................18
Phone rename..........................19
Reset handset ..........................19
Telephone operation
Telephone operation.................20
Line indicators..........................20
Making and ending a call...20
On hook dialing
(predialing).................................20
Using the speakerphone.....21
Answering a call .....................21
Temporary ringer
silencing......................................21
Redial............................................21
Options while on calls.............23
Call waiting................................23
Volume control ........................23
Mute ..............................................23
Hold...............................................24
+06 1((
%#0%'.

Chain dialing.............................25
Conference call ...........................26
Conference calls .....................26
A. Join a call by answering
an intercom call......................26
B. Inviting parties using
Intercom......................................27
Intercom..........................................28
Make an intercom call to
an extension .............................28
Answer an intercom call.....28
End an intercom call.............28
Answer an incoming call
during an intercom call.......28
Directory
About the directory...................29
Capacity ......................................29
Exit the directory ....................29
Create directory entries..........30
Create a new directory
entry .............................................30
Review directory entries .....30
Search directory..........................31
Search by name ......................31
Dial, delete or edit entries.....32
Display dial ................................32
Delete an entry........................32
Edit an entry .............................32
Caller ID
About the caller ID....................33
Information about caller ID
with call waiting .....................33
Caller ID information................35
How the caller ID
information (call log)
works............................................35
Review the caller ID
information................................36
View dialing options..............36
Dial a call history entry.......37
Save a caller ID entry to
the directory .............................37
Delete all caller ID
entries..........................................37
Reasons for missing caller ID
information................................38
Answering system
Private mailbox setup ..............39
Announcement ........................39
Answering system
operation....................................40
Visual message waiting
indicator......................................40
Message playback..................40
Appendix
Handset screen icons...............41
Alert tones and lights ..............42
Handset alert tones...............42
Handset indicator lights......42
Handset display screen
messages....................................43
Troubleshooting ..........................44
Maintenance..................................53

Important safety
information................................54
FCC part 15...................................57
FCC part 68 and ACTA.............59
Limited warranty.........................60
Technical specifications ..........63
DECT 6.0 digital
technology.................................63
Telephone operating
range ............................................63
Index
Index ................................................64

1
Your product may be shipped with a protective sticker covering
the handset 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.
•
•
•
•
•
•
•
You must install and
charge the handset
battery before using the
cordless handset.
See pages 5- 7 for easy
instructions.
Getting started
Installation

2
Charge light
On when the handset is charging in the
charger (page 7).
Softkeys (2)
Press to select a menu item displayed above
the key.
LINE 1/LINE 2/LINE 3/LINE 4
Press to make a call on the desired line
(pages 20).
Press to answer a call (page 21).
INT
Press to make an intercom call when in idle
(page 28).
REDIAL/PAUSE
Press to view the last 10 numbers dialed
(page 21).
/SPEAKER
Press to turn on the handset speakerphone.
Press again to resume normal handset use
(page 21).
•
•
•
•
•
•
•
+06 1((
%#0%'.
Getting started
Quick reference guide

3
Getting started
Quick reference guide
VOL/ DIR
Press to scroll up while in menus.
During a call, press to increase the listening volume
(page 23).
Press to show directory entries when the telephone
is not in use (page 30).
MENU/SELECT
Press to enter the menu.
While in a menu, press to select an item or save an
entry or setting.
OFF/CANCEL
While using menus, press to return to idle mode.
During a call, press to hang up.
VOL/ CID
Press to scroll down while in menus.
During a call, press to decrease the listening
volume (page 23).
Press to show the caller ID history when the
telephone is not in use (page 36).
MUTE/DELETE
During a call, press to mute the microphone
(page 23).
While predialing, press to delete digits (page 20).
While reviewing the directory entry, press to delete
an individual entry (page 32).
While entering or editing a directory entry, press to
erase a digit or character (pages 30 and 32).
•
•
•
•
•
•
•
•
•
•
•
•
•
•
+06 1((
%#0%'.

4
Getting started
Quick reference guide
Main menu
Main menu
Ringers (pages 13-14)
Phone Settings (pages 15-19)
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 OFF/CANCEL or BACK
to cancel an operation, exit the
menu display or return to the
idle screen.
•
•
•
•
•
•
Belt clip
+06 1((
%#0%'.
Phone
BACK SELECT
Ringers
Phone settings

5
Plug the power adapter into an
electrical outlet not controlled
by a wall switch.
Getting started
Charger installation
Install the charger as shown below.
IMPORTANT INFORMATION
Use only the power adapter supplied with this product. To order a replacement
power adapter, visit our website at www.telephones.att.com, or call
1 [phone]. In Canada, dial 1 [phone].
The power adapter is intended to be correctly oriented in a vertical or floor mount
position. The prongs are not designed to hold the plug in place if it is plugged into
a ceiling, under-the-table or cabinet outlet.
1.
2.

6
Install the battery as shown on the following page. Once you
have installed the battery, the screen indicates the battery
status (see the table below). If necessary, place the handset in
the charger to charge the battery. For best performance, keep
the handset in the charger when not in use. The battery is fully
charged after 11 hours of continuous charging. See the table on
page 63 for battery operating times.
If the screen is blank, 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. When the battery
is low, the handset shows Low battery and a flashing .
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
EXT XX. (XX represents
the extension number of
the device the handset
is registered to).
Battery is charged. To keep the battery
charged, place it in the or
charger when not in use.
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.
Align the cover flat against the battery compartment, then slide
it upwards until it clicks into place.
Charge the handset by placing it face forward in the charger.
The charge light is on when charging.
1.
2.
3.
Install the battery as shown below.
+06 1((
%#0%'.
The charge light
IMPORTANT INFORMATION
Use only the supplied rechargeable battery or replacement battery (model
BT164392). To order a replacement battery, 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 possible leakage.
•
•
1 2
3

8
You must register this MS2025 cordless handset with the
MS2015 deskset before use. Each MS2015 supports only one
cordless handset. When first purchased, the 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 pages 6-7.
Start registration when the handset screen shows Choose
Handset in Registration at base menu. And put handset on
cradle to register.
Getting started
Adding and registering a handset

9
Getting started
Adding and registering a handset
To register a handset to your 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.
Press or to scroll to Registration, then
press MENU/SELECT or /SKIP.
Press MENU/SELECT again or /SKIP 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 screen displays
Registering... Please wait during
registration. The handset beeps once
and begins registering to the MS2015
deskset. It takes up to 60 seconds to
complete the registration. When the
registration is successful, the MS2015
deskset shows Handset registered. and
then the handset shows Ext Handset.
To change the handset name and the
extension number shown on the handset
screen, refer to the Phone rename on
page 19 and Extension no. on page 18
for details.
NOTES:
If the registration is not successful, the deskset returns to the previous
screen. To reset the handset, remove the handset from the charger. Try the
registration process again.
We recommend you avoid using the deskset and the cordless handset at the
same time.
1.
2.
3.
4.
5.
•
•
Choose Handset
in Registration
at base menu.
And put handset
on cradle to
register
One Touch
Phone Settings
>Registration
Customer Support
Registration
>Handset
DECT Headset
Deregistration
Registering
handset...
(Put handset on
cradle to start)

10
You may need to deregister your cordless handset when you
have a registered handset 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 from the MS2015 deskset
On the deskset, press MENU/SELECT.
Press or to scroll to Registration
and press MENU/SELECT or /SKIP.
Press or to scroll to Deregistration
and press MENU/SELECT or /SKIP.
The screen shows Deregister all
devices? Press ‘SELECT’ to confirm.
Press MENU/SELECT to confirm.
The process up to 10 seconds to
complete the deregistration. TThe
deskset shows Handset deregistered.
DECT Headset deregistered. and
there is a confirmation tone when the
deregistration is successful.
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 deskset. You can
also reset the deskset by unplugging the power from the deskset and plugging
it back in.
To register a cordless handset again, refer to the registration information on
page 9.
1.
2.
3.
4.
5.
•
•
Getting started
Deregistering a handset
Deregister
all devices?
Press ‘SELECT’
to confirm
One Touch
Phone Settings
>Registration
Customer Support
Registration
Handset
DECT Headset
>Deregistration

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 corded headset, visit our website at
www.telephones.att.com, or call 1 [phone]. In
Canada, dial 1 [phone].
Getting started
Adding a corded headset
Plug a 2.5 mm
headset into the
HEADSET jack on the
side of the handset.
Side view of the handset

12
Menu settings
Use this menu to change the handset settings.
Press MENU/SELECT or MENU when in idle mode (when the
handset is not in use) to enter the main menu.
Press DIR or CID to scroll to the feature to be changed.to scroll to the feature to be changed.
The highlighted indicates the selected menu item.
Press MENU/SELECT or the SELECT softkey to select theto select the
menu item.
Press BACK to exit setup without making changes.
Press OFF/CANCEL to back to the idle mode.
NOTE: Press OFF/CANCEL to cancel an operation, exit the menu display, or
return to idle mode.
1.
2.
3.
4.
5.
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 DIR or CID to scroll to Ringers, then
press MENU/SELECT or SELECT.
Press MENU/SELECT or SELECT again to
select Ringer volume.
Press DIR or CID on the handset to adjust
the ringer volume, or press OFF to turn the
ringer off.
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.
1.
2.
3.
4.
5.
BACK SELECT
Ringers
Ringer Tone
Ringer Volume
BACK SELECT
Phone settings
Ringers
OFF SET
Ringer Volume

14
Telephone settings
Telephone setup
Ringer melodies
Use this feature to choose one of the ten ringer melodies. You
can choose different ringer melodies for different lines so you
can easily identify which line is calling.
When the handset is idle, press MENU/SELECT
or MENU.
Press DIR or CID to scroll to Ringers, then
press MENU/SELECT or SELECT.
Press DIR or CID to scroll to Ringer tone,
then press MENU/SELECT or SELECT.
Press DIR or CID to select the desired line
(Line 1,Line 2,Line 3 or Line 4), then press
MENU/SELECT or SELECT.
Press DIR or CID to select a desired
ringer melody.
Press MENU/SELECT or SELECT to save the
setting and return to the previous menu.
There is a confirmation tone. To exit without
making changes, press OFF/CANCEL
or BACK.
Repeat steps 4-6 above to choose ringer
melodies for other lines if desired.
1.
2.
3.
4.
5.
6.
7.
BACK SELECT
Ringers
Ringer Volume
Ringer Tone
Ringer Tone
BACK SELECT
Ringer Tone
j
Line 2
Line 3
Line 4
Line 1
BACK SELECT
Ringer Tone
j
Tone 2
Tone 3
Tone 4
Tone 1