TELES ISDN Telephone User manual

Introduction
Welcome to the TELES ISDN family!
You are now the owner of a TELES.FON. The whole family can enjoy
the benefits of ISDN telephony. Telecommunications in the office is
also more comfortable.
• The phone is ringing and you wonder who it could be for?
Now three members of the family can have their own telephone num-
ber with their own special ring tone.
• The party you are trying to reach is frequently busy.
The Callback when busy function automatically establishes a connec-
tion for you as soon as the line is free again.
• Is the baby really sound asleep?
A discrete call to the telephone set on Room monitoring in the child’s
room gives you peace of mind.
• Your child lifts the receiver and Grandma is on the other end of the
line automatically?
Thanks to Direct call.
• Transfer of calls are possible only through a private branch
exchange?
TELES.FON makes Comfortable call transfer to other TELES
devices on the ISDN line possible.
• You would rather have your PC handle and log your calls?
As a member of the TELES.ISDN family the TELES.FON can hook
up to your computer through an ISDN adapter. The integrated soft-
ware adds even more comfort to ISDN telephony.
• How about a charges counter for all devices on the ISDN line?
The TELES.FON is counting right along.
These are just a few of the special features that the TELES.FON offers.
Read the detailed descriptions on the following pages on how to get the
most out of your TELES.FON and ISDN telephony.

:
The Telephone at a Glance
Signal Tones
OK tone A long beeeep. Your entry was
successful and is being confirmed.
Error tone A short beep. You have attempted
to use a blocked or impossible
function.
Impossible
tone Two short beeps. You have
attempted to activate a function that
does not work in this state.
Call waiting Two beeps. While you are speak-
ing on the phone or making settings
someone is trying to reach you.

The Telephone at a Glance
Functions of the special keys (without the F-key)
The Function Keys
Advice of Charges Redial
Comfortable Call Transfer Mute
Program Loudspeaker

Call waitin
g
Char
g
es
Park Info
Trace
Do not disturb
Disconnect
Conference
Call Counter
Direct call

M6
M5M4
Caller’s
list
Callback
when busy
F
R
Display
Speed-dial
keys
Dial keys
F key
R key
Subtitles:
Function of
the key
after pressing
the F key

:
The Telephone at a Glance
The Display
Symbol Function Symbol Function
Telephone is in the
Programming mode.
Dialing is not possible.
Partial block
is activated.
FSwitched to
Function mode;
second key case is valid.
Global block
is activated or call
charges account is
depleted.
iBlinking - new message
from OPP 6.0. Loudspeaker
is on.
Answering machine
from OPP 6.0 is record-
ing. (Only with
TELES.OnlinePower-
Pack)
Do not disturb
No calls are accepted.
Direct call is activated. Mute
Receiver is deactivated
Advice of Charges
is activated; call charges
are displayed.
Callback when busy
is activated.
Room monitoring
is activated.

The Telephone at a Glance
Standard Displays
Display with receiver down.
The first MSN is not confirmed. MSN
2-3 confirmed or not set. Followed by
date and time.
Display during dialing
The number being dialed is shown in
the display.
Display during an active connection
Connection time and advice of charges1
are displayed.
1. The feature “advice of charges” needs to be arranged for with your telephone company.
Display when the telephone rings:
If the caller has Caller ID then that
number is shown/Otherwise an “n”
Caller with Caller ID on a programmed
MSN: MSN and call number are dis-
played.
Caller with suppressed Caller ID or ana-
log phone on a programmed MSN:
MSN and “n” are displayed
Display following termination of the
connection.
Display during partial or global block
Either or respectively .

Date and time appear after
the first established connection
MSN 1 2 3

Charges of the
connection

:
Function Key Combination Page
Turn on/off Call Forwardin
g
<MSN 1,2 or 3> <type of call forward-
ing 1, 2 or 3> 42
Set Call Forwardin
g
target call no.
and type of call forwarding <MSN1,2 or 3> <or>  =next,=previous type 43
Activate/deactivate Call Waitin
g
 or32
Accept Call Waitin
g
or Answerin
g
Machine call  16
Turn on/off Direct Call  41
Enable Char
g
e Account  <call charges> 35
Disable Char
g
e Account  35
Display Char
g
e Account  20
Display Call Char
g
es on the device
terminal
Total call charges on ISDN line

21
Enter Call Char
g
es Factor/Type <call charges factor> 
 <charges type 0 or 1> 
Switch between factor and type with and
.
36
Resetting Call Char
g
es and Con-
nection Counters  37
Resetting Call Char
g
es of all
Devices on the ISDN line  37
Callback when busy  10
Permit/suppress Caller ID  or34
Send different Caller ID/MSN hold or! 6
Call from Caller’s List  12
Comfortable Call Transfer <device ID> "# 14
Display Connections Counter  20
Set Device ID   <device ID> 26
Disconnect  9
Increase/decrease Display Contrast or 28
Do not disturb $ 28
= Telephone number = PIN (Personal Identification Number)
"= OK tone != Lift receiver #= Put receiver down
Note: An OK tone (") sounds if the programming or function setting was successful.
Otherwise an error tone can be heard. See “Telephone at a Glance - Signal Tones” in back

Function Key Combination Page
Hold and alternate %15
Information about the last connec-
tion: Number, duration and charges    19
Turn on/off Loudspeaker 9
Increase or decrease the volume of
the Loudspeaker and Receiver !or(louder)or(quieter)25
Change/delete Multiple Subscriber
Number (MSN) <,,> <MSN> 31
Mute receiver and microphone 8
Notebook function  11
Putting a call On Hold
Disconnect active connection %
 15
Park a connection.
Re-establish a connection
<park ID> <>(only for three or
more digit park ID) "#
<park ID> "!
13
Turn on/off Partial/Global Block  <0,1 or 2> 
0=no block, 1=partial block, 2=global block 39
Set 1st - 5th blocked numbers for
Partial block or excepted numbers
for Global block
(partial block) or (global block) <-
> 40
Enter/change PIN (Personal Identifi-
cation Number) old, new, new27
Reset  48
Reset default settings  24
Set Rin
g
Tone and Volume, vol-
ume increase and start volume of the
volume increase
 <MSN1,2,3> 
= ,(volume quieter/louder)
= ,(volume increase on/off)
= ,(start volume quieter/louder)
= ,(ring slower/quicker)
30
Redial 6
Calling Room Monitorin
g
of TELES.FON for which room monitoring
has been set 18
Turn on/off Room Monitorin
g
  or33
Set/change Speed-Dial Number <&-'or&-'> 29
Three-Party Conference  17
Trace Malicious Caller  21

:

©1998 by TELES AG Berlin, Version 1.1/fon-eu/13.07. Page i
Table Of Contents
Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Setup and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
List of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Safety concerns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setting up the phone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Putting together the telephone’s components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Attaching to the telephone net. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operation during power failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Basic Telephony Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General notes on operation and programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Dial pad dialing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sending different Caller ID/MSN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Redial key dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Caller’s list dialing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Notebook dialing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Speed-dial key dialing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Caller’s call number display, call refusal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Loudspeaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hands-free. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Terminating a connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Callback when busy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Notebook function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Caller’s list with connection display, date and time . . . . . . . . . . . . . . . . . . . . . . . 12
Control signals (DTMF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Telephoning - Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Parking and recommencing a conversation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Comfortable call transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Putting a call on hold (Hold for enquiry) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Hold and alternate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Call waiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Three-party conference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Room monitoring (“babysitting”). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Information on the last connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Connections counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Charge account “advice of charges” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Cumulative charges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Tracing calls (Malicious Call Identification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
TELES.FON and the TELES.OnlinePowerPack answering machine . . . . . . . . . 22
TELES.FON and Information display from OnlinePowerPack . . . . . . . . . . . . . . 23
Resetting to delivery state. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Page ii ©1998 by TELES AG Berlin, Version 1.1/fon-eu/13.07.
Table Of Contents
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Time and date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Volume of the loudspeaker and receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Device ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
PIN (Personal Identification Number) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Display contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Do not disturb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Speed-dial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Ring melody and volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Multiple Subscriber Number (MSN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Call waiting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Room monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Caller ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Charge account . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Charges factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Call charges and connections counter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Resetting call charges of all devices on the ISDN line. . . . . . . . . . . . . . . . . . . . . 37
Number of digits for the park ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
General explanation of call numbers blocking. . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Call numbers for the partial and global block . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Direct call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Call forwarding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Destination call numbers for call forwarding. . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Call forwarding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
PC-Integrated Telephony . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
TELES.OnlinePowerPack (not included with the TELES.FON). . . . . . . . . . . . . 45
Technical Data/General Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Licensing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Solving Minor Problems on your Own . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Faults and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Hotline and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
User Contract . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07. Page 1
Setup and Installation
ISDN independent features
Hands-free operation, On-hook dialing, Loudspeaker operation
Loudspeaker volume adjustment, Adjustable ring melody and volume
Phone silent (Do not disturb), Muting
Date / time display, Call timer
Direct call
Partial and Global block
Room monitor with extended loudspeaker function
Call charge and total charges, Total charges all devices on ISDN line
Charge account, Resetting total call charges
Call counting
Secure programming with 5-digit PIN code
Memory for 6 speed-dial numbers
Suffix dialing
Redial with history function (5-number memory)
Caller list with up to 10 numbers, Callback when busy
DTMF-dialing
ISDN dependent features:
Euro-ISDN protocol DSS1
3 Multiple Subscriber Numbers (MSN)
Caller ID presentation (CLIP), Caller ID suppression (CLIR)
Call waiting
Three-party conference
Call forwarding unconditionally
Call forwarding no reply (conditional if call is unanswered)
Call forwarding on busy (conditional if line is engaged)
Parking / Comfortable call transfer
Hold for enquiry, Hold and alternate
Trace calls (Malicious Call Identification)
Due to technical differences in ISDN lines of various countries not all
features of your TELES.FON may be available.
General
Limitations

Page 2©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07.
Setup and Installation
1 Telephone
1 Telephone receiver
1 Telephone cable
1 Receiver cable
1 User’s manual
The TELES.FON is intended for operation only on a DSS1 type ISDN
access. Any other connection may not work.
The TELES.FON may not be altered neither in its construction nor in
its safety features without the explicit prior consent of the manufacturer.
Any alterations exempts the manufacturer of liability for thereby result-
ing damages.
Please insure that no liquids enter the telephone case. Short circuits or
electrical shocks can be the consequence.
Place the telephone on an even and stable surface. Laying a non-slip-
ping mat or cloth under the device is recommended when placing the
phone on sensitive surfaces, e.g. new or freshly polished furniture. This
avoids unsightly traces on the furniture’s surface.
Keep smoke, dust, vibrations and moisture from the device. Avoid ex-
treme temperatures, direct sun light as well as powerful electromagnetic
fields.
List of contents
Safety concerns
Setting up the phone

©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07. Page 3
Setup and Installation
Attaching the receiver
Slip the plug of one end of the spiralled receiver cable into the socket of
the receiver and the plug of the other end into the socket on the side of
your phone that is labelled with “Handset” or a receiver symbol.
Attaching the telephone cable
The long phone cable has 2 wider plugs. One plug is plugged into the
socket labelled “ISDN” at the back of the phone.
The other plug fits into the socket of your ISDN line. In case there is no
ISDN access at the place of installation then you have to apply for one
from your local telephone company or telecommunications provider.
The phone is now ready for operation. No further settings need to be
made for “normal” telephone operations.
Wipe phone with a slightly moist rag or better yet with an anti-static
cloth. Do not use a dry cloth and any cleansing or scrubbing agents. This
avoids building up electrostatic charges.
Putting together the telephone’s components
Attaching to the telephone net
Cleaning

Page 4©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07.
Setup and Installation
Your TELES.FON can still be used in the event of a power failure.
The emergency power function can be activated/deactivated by a switch
on the bottom of the case. If there is only one telephone attached to the
ISDN line the switch ought to be set to “on”. Should there be several
telephones attached to the ISDN line, select only one of these to be able
to operate under emergency power because only one device can operate
in the event of a power failure. In case more than one TELES.FON is
set for emergency power then the following message is displayed:
The display will only appear if there are two or more TELES.FONs on
the same ISDN interface. If telephones from other manufacturers are
also attached that are also set to emergency power this error will not be
identified by the TELES.FON.
In order to program the telephone under emergency power, take the fol-
lowing steps:
Please note the following limitations of functions under emergency
power:
• the volume of the ring is subdued
• on-hook dialing and hands-free operation are not possible
Operation during power failure
!Lift the receiver.
#Put the receiver down again.
Program your TELES.FON.

©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07. Page 5
Basic Telephony Functions
• During on-hook dialing the last entered digit can be deleted by press-
ing the R key.
• Programming is generally done on-hook, i.e. you leave the receiver
down while you press the keys for programming.
• If you want to interrupt the programming or an activated function
(e.g. advice of charges, callers list) simply press the -key again.
• Should there be no entry for a longer time (20s - 2min) the telephone
returns automatically to the basic state.
• During programming the - or -keys can be used to switch
between different dial modes
• Programming can be simplified when you use the speed-dial keys for
entering call numbers.
• During programming the telephone cannot answer calls.
• Activated functions (e.g. advice of charges, caller’s list) are not dis-
played during an incoming call.
• All functions that are activated with receiver down can be interrupted
directly with the -key.
General notes on operation and programming

Page 6©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07.
Basic Telephony Functions
You can determine which of your MSNs should by sent as caller ID to
the called party. By default the first one is sent. You can send the 2nd
or 3rd MSN instead. This is practical for charging calls to different
numbers and for determining which number should appear on the called
party’s telephone display.
Dial pad dialing
or:
!Lift the receiver
or press the loudspeaker
key.
Enter call numbers.
Enter call numbers. !Lift the receiver
or press the loudspeaker
key.
Sending different Caller ID/MSN
Press and hold or for MSN 2-3
!Lift the receiver and then release key.
Dial the call number.
Redial key dialing
or:
!Lift the receiver
or
press the loudspeaker
key.
Press the redial key, pos-
sibly up to 5 times to
select one of the numbers
dialed previously.
Press the redial key (the
number last dialed is
called).
!Lift the receiver
or
press the loudspeaker key

©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07. Page 7
Basic Telephony Functions
The caller’s list shows up to 10 call numbers of the last callers.
Press  to leaf through the list. A ’-’ is displayed in front of the
call number if no connection had been established. Once a connection
was made with this party the ’-’ sign is deleted.
You have the possibility to store up to 5 telephone numbers during a
call. Press the redial key while telephoning and enter the number. Com-
plete the entry by a renewed pressing of the redial key. Following the
call the stored numbers of the notebook function can be used. The num-
bers can be found following the standard redial list numbers.
Caller’s list dialing
Displaying the call num- Dialing the call number
Press the -key !Lift the receiver.
or press the loudspeaker
key
Press the redial key, if nec-
essary several times for the
search.
Notebook dialing
Displaying the call num-
ber Dialing the call number
Press the redial key, if nec-
essary several times for the
search.
!Lift the receiver
or
press the loudspeaker key

Page 8©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07.
Basic Telephony Functions
If the call comes from an ISDN extension and the caller has permitted
caller ID then the call number of the caller is shown on the display.
Speed-dial key dialing
or:
!Lift the receiver.
or
press the loudspeaker key
&Press the speed-dial keys
(M1-M3); for M4-M6 press
the F key first
&Press the speed-dial keys
(M1-M3);for M4-M6press
the F key first
!Lift the receiver
or
press the loudspeaker key
Caller’s call number display, call refusal
 You do not want to accept the call.
The caller hears the busy tone.
Mute
Press the mute key during a conversation and the other party
cannot hear you anymore.
A renewed pressing of the mute key switches the microphone
on again.

©1998 by TELES AG Berlin, Version 1.1/fon-eu/15.07. Page 9
Basic Telephony Functions
In this mode the device’s loudspeaker is also switched on in addition to
the telephone receiver so that other persons in the room can listen in on
the conversation.
You can make calls without lifting the receiver with this mode
If you have an on-hold and an active connection then only the active
connection is disconnected and the telephone switches automatically to
the on-hold connection.
Loudspeaker
Press the loudspeaker key during the conversation.
A renewed pressing of the loudspeaker key turns off the loud-
speaker.
Hands-free
or: !Receiver is already lifted.


Press the loudspeaker
key.
Dial a call number.

#
Press and hold the loud-
speaker key while the
receiver is lifted.
Put the receiver down
and then release the loud-
speaker key.
Terminating a connection
Press the -key
Press the number 0