Ericsson DT288 User manual

DT288
Cordless Telephone for MD110
User Guide

DT288
Welcome
2
Welcome to the User Guide for the DT288 cordless phone in the
Ericsson Enterprise business communication system MD110.
It is a state-of-the-art business communications system. Its alliance
of features and facilities effectively improves communications for
virtually any kind of organization.
To take full advantage of these advanced features and facilities there
is a line of telephones, designed for ease of use in every situation.
Your phone is menu driven. By use of the Scroll keys and the CLR,
YES and NO keys you get access to frequently used functions
and numbers. Step-by-step instructions in the display assist your
actions on the phone.
Some markets use differing codes for some functions. In this
guide, all functions are described using the most common code
for every specific function. As a note the markets and their
differing code is shown.
The User Guide describes the facilities of the Ericsson Enterprise
communication system and the DT288 phone as it is programmed
at delivery from the factory. There may be some differences in the
way your system is programmed. Please consult your system
administrator if you need further information.

3
DT288
Table of Contents
Table of Contents
page
Important ................................................4
Description ................................................6
Switching On/Off ....................................11
Free Seating (optional) ............................12
Incoming Calls ........................................13
Outgoing Calls ........................................14
During Calls ............................................17
When You Receive a Busy Tone ............22
Call Forwarding ......................................25
Internal Messages ..................................33
Voice Mail ..............................................35
Information ............................................38
Abbreviated Numbers ............................41
Phone Book ..........................................43
Group Facilities ......................................49
Other Useful Facilities ............................51
Paging (optional) ....................................56
Authority ................................................60
Settings and Adjustments ......................64
Audible Signals ......................................72
Display Information ................................76
Installation ..............................................79
TroubleShooting ....................................82
Index ......................................................84
EN/LZT 103 06 R1B
© Ericsson Enterprise AB 2001
All rights reserved. No parts of this publication may be reproduced,
stored in retrieval system,or transmitted in any form or by any
means, electronic, mechanical, photocopying, recording or
otherwise, without prior written permission of the publisher.

4
Important
DT288
Important
IPEI code
Your telephone has an International Portable part Equipment
Identity (IPEI) code. This code is needed for your system
administrator to enable network subscription.
Furthermore you may need the IPEI code to unblock your tele-
phone if an incorrect PIN code has been entered three times
(=telephone is blocked).
To find the IPEI of your phone:
Select Information and press
Select ShowIPEI and press
Enter your PIN code and press
(Default code: 0000) The IPEI number is displayed.
Note: Once the phone is blocked it is impossible to read
the IPEI code in the phone. Therefore, write down the
IPEI code but keep the code secret to prevent misuse of
your phone.

5
Important
DT288
Guidelines
Consider these suggestions and guidelines to keep your
telephone in good shape and working properly.
Intrinsic safety
The telephone is not specified as intrinsically safe, so do not use
these telephones in areas with a danger of explosion.
Battery handling
The battery contains environmental polluting material. If defect,
return it to a collecting point.
Cleaning
Clean your telephone only with a soft, water dampened cloth.
Using soap or any other cleaning materials may discolour or
damage the telephone.
Treatment
Do not expose your telephone to direct sunlight for long
periods. Keep the telephone away from excessive heat and
moisture.

WWoorrkk112233
1166--MMaarr 1100::2222
6
Description
DT288
Description
Antenna
Volume Up
Off hook: raise earpiece volume.
See section “Adjustments”.
Volume Down
Off hook: lower earpiece volume.
See section “Adjustments”.
Off hook / Yes
Answer call, accept.
Cancel key
Delete latest entered digit.
Backspace when editing text.
Cancel a menu option.
Microphone-, ringer- and
warning on/off, see sections
“During calls” and
“Adjustments”.
Control key (up)
Scroll up through menus or
name list.
Move left in choices.
1 / Space
Space, hyphen, etc.,
when editing text.
Battery
See section “Installation”.
Star / Pause / Text case
Insert a dial tone pause.
Upper/lower case in text mode. Charging connectors
See section “Installation”.
Warning Light
Ringing, message waiting,
battery low, exit cover area.
Earpiece
Display (3 rows)
Display at rest. Work is the
network name and 123 is (your)
extension number.
See section ”Description/
Display info”.
On/Off / On hook / No
Switch on/off, end call, one
menu back. Cancel a menu
option.
Control key (down)
Scroll down through menus,
name list.
Move right in choices.
Keypad
Internal call key
Connect to other portables
when used in a home
environment. Not used in the
MD110 system.
R-key
Put call on hold (inquiry), take
call off hold.
See section “During calls”.
Microphone

7
Description
DT288
Display info
The display gives you visual feedback on all actions that you
perform, and also textual warnings. The upper two rows are text
rows (12 possible characters in each row), showing menus that
you can access, names and numbers that you edit or dial, your
telephone id etc. The lower row displays different states,
visualized by icons. For more information see section “Display
information”.
Text row signs
Menu pointer / Diversion indicator
Shows the menu that can be accessed by pressing yes. When
displayed before a name or number it indicates that the telephone
is diverted to another extension.
Number too long for display
There are more digits to the left.
Dash
Indicates that a pause is programmed in the telephone number.
Exclamation Mark
Marks an unread entry in an entry list.
!
–
<
>

8
Description
DT288
Icon row signs
Signal strength
On when your telephone is locked to the system. The bars
indicate reception quality. Four bars indicate optimal reception.
Ringer off
On when the ringer is suppressed or switched off.
Message
Flashes when messages are received.
Call
On when your telephone is off hook and flashes during ringing.
Battery charging indicator
The battery cells are flashing sequentially when the battery is
being charged and is on when charging is completed. Indicates
the amount of talk and standby time left.
Key lock
Indicates that the key pad is automatically locked 1 minute after
being used.
Who Called list indicator
Indicates a new unanswered entry in the Who Called list.

9
Description
DT288
Display menu
Your cordless telephone is menu-driven. Each menu forms a loop.
Navigating the menus
You can activate the menus by pressing the Control up key or the
Control down key. These keys are also used to scroll through the
menu structure.
The CLR, YES and NO keys are used to reach the desired option.
Confirm Cancel Cancel
Control up Control down

10
Description
DT288
Menu structure
New Call
DialMode
Options
available
when:
On hook
AddNew
AddWhoCall*
AddLastDial*
PhoneBook
Voice:X*
Handset
Networks
Information
AutoKeyLock
Alerts
PhoneLock
DirectCall
MasterReset
Language
Display
AutoIntern
Off hook
*Applicable only if entries are available
Internal
External
CallBack
Message
Page
Click
Silent
PowerOn
Subscript
ChangePIN
SelectNet*
Priority*
Rename*
Delete*
ReSubscribe
Subscribe
WhoCalled*
LastDialled*
LastCall
TotalCalls
ShowIPEI
Find&Call
WhoCalled*
LastDialled*
GotoDTMF
SendTones
SendPause
Find&Call
Store
Find&Edit
DeleteAll Edit
Delete
RingVolume
RingType
KeySound
DiscreetRng
Light
Contrast

11
Switching On/Off
DT288
Switching On/Off
Switch on
Press until the display lights up
If your telephone does not switch on or the battery icon starts
flashing, the battery is low. Charge the battery.
While charging, you can use your telephone normally.
Note: If the signal strength icon is off and the message
No Network is displayed you cannot make or answer
calls. See section “Troubleshooting”.
Switch off
Press until the display turns blank
Note: During calls, you cannot switch off your telephone.

12
Free Seating
DT288
Free Seating (optional)
The free seating function is used for persons who have an office
extension number but no telephone set of their own. For example,
flexible office workers, persons mostly working outside the office, etc.
As a free seating user and working from the office, you logon to any
free telephone set that temporarily will be assigned with your
extension number and your system authorities.
To log on:
*11*Press
*Enter the authorization code and press
#Enter your telephone number and press
Wait for the call timer to start in the display
Press to finish the procedure
The display shows your telephone number.
To log off:
#11#Press
Wait for the call timer to start in the display
Press to finish the procedure
Note: An earlier version of the free seating function use
other procedures: To log on, press *10*extension
No. #. To log off, press #10#.

13
Incoming Calls
DT288
Incoming Calls
Answer calls
A ringing signal indicates an incoming call and the warning light
flashes quickly. The ringing type tells you whether the call is an
internal, external or call back call and the display indicates an
incoming call.
Display example:
Press to answer
If the telephone rings at an inconvenient moment:
Press to suppress ringing for the moment
Note: Calls can be answered at any time, no matter if
you are programming, or keying in a number etc.
Press to end the call
For another extension
You can answer a call to another telephone. When the telephone
rings and there is nobody to answer the call:
Call the ringing extension and press
Busy tone.
8Press
Note: France-press 4; Sweden-press 6
4736

14
Outgoing Calls
DT288
Outgoing Calls
Make calls
How to make internal and external calls.
Notes:
- Correct a wrong entry by pressing the CLR key.
- If you decide not to make the call while keying in the
number, press NO to stop.
- If you receive a call while keying in the number, simply
press YES to answer.
- You can make your calls faster by using abbreviated
numbers or call-by-name.
Internal calls
Dial the extension number and press
External calls
0Dial the digit or digits to get an external line
Dial the external number and press
To insert a pause if you have to wait for dial tone:
*Press
Your telephone will go off hook and dial the number.
On the display the duration of the call is shown.

15
Outgoing Calls
DT288
Off hook dialling
If you prefer to dial a number off hook:
Press
Dial tone.
Dial the number
To end calls
Press
Last external number redial
When you initiate an external call the system automatically stores
all the dialled digits, irrespective of whether the call was
successful or not.
*** Press to redial the saved number
The last external number is automatically redialled.
Note: Sweden and Finland-press **0YES.
Redial number from LastDialled list
The last twenty dialled numbers are memorised by your tele-
phone. You can redial one of these numbers by selecting the
number from the LastDialled list.
Select Information and press
Select LastDialled and press
Scroll, select number and confirm
A number marked with a ! means a new number. You can store
numbers permanently by adding them to your phone book. See
section “Phone book”.
Note: The LastDialled list will be cleared if the power of
your telephone is lost (e.g. if you remove the battery).

16
Outgoing Calls
DT288
Call number from WhoCalled list
Your phone keeps a list of people who have called you (if supported
by the network). Whenever there are entries in the list, you can view or
call back a number with the WhoCalled option. If the “Who Called list
indicator” is shown in the display, there are one or more new numbers
added since the last time you entered the WhoCalled list.
When the phone is switched off, the WhoCalled list is erased.
Numbers in the WhoCalled list can be added to your Phone
Book, see section “Phone Book”.
To call
Select Information and press
Select WhoCalled and press
The last caller’s number is displayed. If the number is in your
Phone Book, the associated name is displayed instead.
Scroll to find the number or name you want to call back
and press
Press to end the call
Note: If Check Who Called? is shown in the display,
you can view the last caller’s number by pressing YES.
To call the number, press YES once again.

17
During Calls
DT288
During Calls
Mute microphone
To mute the microphone during an ongoing conversation:
Press and hold
The caller will not hear what is being said in your room.
or
Press shortly, to turn the microphone off
Short beeps confirm that the microphone is off.
Press again, to turn the microphone back on
Mute warning signal
If a warning sounds during an ongoing call, e.g. when the battery
runs low, you can turn off the signal temporarily.
Press shortly
Note: When a warning occurs during a call and you want
to mute the microphone, the first press always mutes the
warning sound. The second press mutes the microphone.

18
During Calls
DT288
Inquiry
You have speech connection and want to make an inquiry to an
internal or external party.
RPress
Dial tone.
Call the second party
The first party is put on hold. When the other party answers you
can switch between the calls (refer back), transfer the call, create
a conference or end the call.
RPress to end the inquiry call
The second party is disconnected.
Press to return to the first party
efer back
2Press to refer back to the other party
The party you talked to is put on hold, the other party is
connected.
Note: Sweden - press Rto refer back to the other party.

19
During Calls
DT288
Inquiry via the PhoneBook
If you don’t know the number by heart, you can make an
inquiry to a second party in the Phone Book during a call.
Select NewCall and press
Select Find&Call and press
(name) Enter the first letters of the name and press
Scroll to find the name and press
The first party is put on hold and the second party is dialled.
When the second party answers, you can switch between the
calls (refer back), transfer the calls, create a conference and end
one of the calls.
RPress to end the inquiry call
The second party is disconnected.
Press to return to the first party
Transfer
You want to transfer an ongoing call.
RPress
Dial tone.
Call the second party
Press before or after answer
The ongoing call is transferred.
Note: If you have put more than one call on hold the last
call that was put on hold will be transferred. If the dialled
extension is busy or transfer is not allowed, your
telephone will ring again.

20
During Calls
DT288
Conference
With this procedure you can include up to seven parties in a
conference. Only the conference leader can admit participants.
During the conference a tone will be heard every 15th second.
Note: The conference tone might be disabled for your
system.
You have an ongoing conversation and want to establish a tele-
phone conference. You will become the conference leader.
RPress
Dial tone.
Call the second party
Wait for answer.
3Press to establish a conference
Repeat the procedure to add more conference members
Press to leave the conference
On hold
You can temporarily put the ongoing call on hold. Calls put on
hold can be resumed on your own telephone or another.
RPress
Dial tone.
Press
To resume the call
Press within 30 seconds
If not resumed within 30 seconds you will be called back.
An unanswered external call will be re-routed to the operator after
another 30 seconds.