BELGACOM Phone 520 User manual

Belgacom Forum™ 500
and Forum™ 5000
Forum Phone 520,
Forum Phone 530
User Guide

Welcome to Belgacom
Thank you very much for choosing this Belgacom product. Our
product meets the strictest requirements with regard to design
and quality.
Forum Phone 520, 530
This User Guide will show you how to use your Forum Phone 520
or Forum Phone 530 and answer all your major questions. If you
need further support or information, please consult your system
administrator or your Belgacom dealer.
Internet:
www.belgacom.be/pabx
You can contact our Support on the following telephone numbers:
in Dutch: 0800 22 400
in French: 0800 33 400
in German: 0800 44 400
in English: 0800 55 400
Forum™ 5000 and Forum™ 500
This user guide applies to the Forum™ 5000 and Forum™ 500
product families. The Forum™ 500 product family comprises the
Forum™ 523/524, Forum™ 525/526 and Forum™ 550/560
communications systems. The Forum™ 5050 communications
system belongs to the Forum™ 5000 product family.
If individual features differ on the systems, a reference is made in
this user guide.
We hope you enjoy using your Forum Phone.

Forum Phone 520
Forum Phone 530
Internal dialling 01:57
&31
Charges
Telephone lock
E-Mail
Toggle
Conference
Follow me
Sekretary
&33
Missed calls
E-Mail
Appointments
Voicebox mess.
Transfer
Charges
Messenger
Time control
Internal dialling
12:35
Fri.22.Feb.02

Forum Keypad 530
Charges
Toggle
Conference
E-Mail
Appointments

1
Contents
System Telephones on the
Forum 500 / Forum 5000 7
Using Your Telephone 8
zSafety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
zInstallation Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
zCleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
zAdjusting the Inclination . . . . . . . . . . . . . . . . . . . . . . . . . . 9
zWall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
zLabelling the Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Add-ons 12
zModule 2nd Forum Phone . . . . . . . . . . . . . . . . . . . . . . . . 14
za/b Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
zForum Phone 500 Module Headset . . . . . . . . . . . . . . . . . . 16
Key Assignments 17
zDial Keypad with ABC Assignment . . . . . . . . . . . . . . . . . . 17
zCall Key 1 of the Telephone . . . . . . . . . . . . . . . . . . . . . . . 17
zCall Keys with Other Telephone Numbers. . . . . . . . . . . . . . 18
zMenuCard Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
zInfo Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
zABC Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
zArrow Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
zOK Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
zRedial Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zEnquiry Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zHands-Free/Open-Listening Key. . . . . . . . . . . . . . . . . . . . 20
zDisconnect Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zMuting Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zC Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zPlus/Minus Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
zESC Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
zProgrammable Keys with LED Display . . . . . . . . . . . . . . . . 21
Display and MenuCards 23
zChanging the Language . . . . . . . . . . . . . . . . . . . . . . . . . 23
zInfo Line(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
zKey Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2
zMenuCard Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
zInvoking MenuCards and Selecting Items from the List . . . . 26
zSetting Windows and their Characteristics . . . . . . . . . . . . . 27
zToggling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
zEntering/Deleting Digits . . . . . . . . . . . . . . . . . . . . . . . . . 28
zDeleting Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
zEntering Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
zAutomatic Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
The Keypad Module on the Forum Phone 530 31
zSelecting the Function Level . . . . . . . . . . . . . . . . . . . . . . 32
zOperating the Keypad Module Keys. . . . . . . . . . . . . . . . . . 32
External Audio Devices 32
zConfiguring Audio Devices . . . . . . . . . . . . . . . . . . . . . . . . 32
zUsing the Audio Devices . . . . . . . . . . . . . . . . . . . . . . . . . 33
Making Calls 35
General Functions 35
zInternal and External Telephone Numbers . . . . . . . . . . . . . 35
zSignalling on the Call Keys. . . . . . . . . . . . . . . . . . . . . . . . 36
zCalls in the Call-waiting Queue. . . . . . . . . . . . . . . . . . . . . 36
zAccepting a Call During Automatic Dialling. . . . . . . . . . . . . 37
zBlock Dialling/Automatic Dialling . . . . . . . . . . . . . . . . . . . 37
zDTMF Postdial/VF Signalling. . . . . . . . . . . . . . . . . . . . . . . 38
zMuting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
zCall-charge Display, Duration Display . . . . . . . . . . . . . . . . 39
zAdjusting the Volume with the Plus/Minus Key . . . . . . . . . . 39
zRedialling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
zHands-free, Open-listening Mode . . . . . . . . . . . . . . . . . . . 40
zBlocked/Unblocked Telephone Numbers . . . . . . . . . . . . . . 41
zTelephone Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
zKeypad Dialling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
zLeast Cost Routing (LCR). . . . . . . . . . . . . . . . . . . . . . . . . 42
zTransmission of Call Numbers . . . . . . . . . . . . . . . . . . . . . 42
zMenuCards Before and During a Call . . . . . . . . . . . . . . . . . 43
zMenuCard “Selection” in the Idle State . . . . . . . . . . . . . . . 44
Making External/Internal Calls 46
zManual or Automatic Trunk Line Seizure . . . . . . . . . . . . . . 46
zMaking an External Call. . . . . . . . . . . . . . . . . . . . . . . . . . 46
zMaking an Internal Call . . . . . . . . . . . . . . . . . . . . . . . . . . 47

3
zUsing Destination Keys to Make Calls . . . . . . . . . . . . . . . . 47
zCall Waiting with an Internal Subscriber . . . . . . . . . . . . . . 48
zUsing Routes to Make Calls . . . . . . . . . . . . . . . . . . . . . . . 48
zBusy Display for Bundles and Routes on the
System Telephone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
zEnding Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
zMenuCard “Conversation” . . . . . . . . . . . . . . . . . . . . . . . . 49
zMenuCard “Busy” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Accepting Calls 53
zBy Lifting the Handset or Pressing a Key . . . . . . . . . . . . . . 53
zAutomatic Call Connection. . . . . . . . . . . . . . . . . . . . . . . . 54
zDuring Another Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
zMenuCard “Call waiting” . . . . . . . . . . . . . . . . . . . . . . . . . 55
zMenuCard “Call”. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
zVoicebox Queries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Enquiry, Toggling, Transfer and Conference 56
zEnquiry/Toggling by means of the R-Key or
Another Call Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
zTransferring an Internal/External Call to an
Internal Subscriber. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
zTransferring an External Call to an External Subscriber . . . . 58
zMenuCard “Subscr (Subscriber) on hold”. . . . . . . . . . . . . . 58
zInternal/External Three-Party Conference . . . . . . . . . . . . . 59
zMenuCard “Conference” . . . . . . . . . . . . . . . . . . . . . . . . . 59
Special Calls/Functions 60
zAccepting an Appointment Call. . . . . . . . . . . . . . . . . . . . . 60
zBaby Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
zAnnouncements (with and without Intercom). . . . . . . . . . . 60
zAnswering a Callback . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
zForwarding Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
zDoorbell, Door Opener . . . . . . . . . . . . . . . . . . . . . . . . . . 65
zEntrance Intercom Calls . . . . . . . . . . . . . . . . . . . . . . . . . 66
Making Calls from the Telephone Book 67
zThe Telephone Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
zMenuCard “Phone book” . . . . . . . . . . . . . . . . . . . . . . . . . 67
zSpeed Dialling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
zAdd Phone Numbers to Telephone Book from Lists
or during a Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

4
Team Functions 71
Managing Calls in a Team 71
zMaking External/Internal Calls . . . . . . . . . . . . . . . . . . . . . 71
zAccepting Calls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
zEnquiry, Toggling and Transferring . . . . . . . . . . . . . . . . . . 73
Programming the Call Keys 74
zMenuCard “Prog. call key” (Trunk Key) . . . . . . . . . . . . . . . 75
zMenuCard “Prog. team key”. . . . . . . . . . . . . . . . . . . . . . . 77
zDirect-call Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Remote-controlled Functions 78
Remote-controlled Dialling (Call Through) 79
Remote-programmable Call Forwarding 80
Remote-programmable Voicebox Configuration
and Query 81
Setting up an Internet Connection from Remote 81
Features and MenuCards 82
How to Set Features 82
zUsing MenuCards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
zUsing Programmed Keys . . . . . . . . . . . . . . . . . . . . . . . . . 82
zUsing the Star and Hash Keys . . . . . . . . . . . . . . . . . . . . . 82
Main Menu 83
zMenuCard “Main menu”. . . . . . . . . . . . . . . . . . . . . . . . . . 83
zMenuCard “Calls” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
zMenuCard “Call Forwarding” . . . . . . . . . . . . . . . . . . . . . . 88
zMenuCard “Messages”. . . . . . . . . . . . . . . . . . . . . . . . . . . 91
zMenuCard “Phone Settings” . . . . . . . . . . . . . . . . . . . . . . . 92
zMenuCard “Protection” . . . . . . . . . . . . . . . . . . . . . . . . . . 94
zMenuCard “Connections” . . . . . . . . . . . . . . . . . . . . . . . . . 97
zMenuCard “Phone Book” . . . . . . . . . . . . . . . . . . . . . . . . 102
zMenuCard “Applications” . . . . . . . . . . . . . . . . . . . . . . . . 104
zMenuCard “Central Settings” . . . . . . . . . . . . . . . . . . . . . 104

5
Shortcut Menus 106
zMenuCard “Info” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
zMenuCard “Active Features”. . . . . . . . . . . . . . . . . . . . . . 106
zMenuCard “Prog. call key” . . . . . . . . . . . . . . . . . . . . . . . 107
zMenuCard “Prog. team key”. . . . . . . . . . . . . . . . . . . . . . 107
Programming Keys 107
zProgramming Call Numbers (Destinations) . . . . . . . . . . . 108
zProgramming Functions (Features). . . . . . . . . . . . . . . . . 109
zStacking or Linking Functions . . . . . . . . . . . . . . . . . . . . 111
zStatus Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Busy Keys 114
zBusy Key “Call Number” . . . . . . . . . . . . . . . . . . . . . . . . 114
zBusy Key “Device” . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Appendix 117
Environmental Information 117
117
Index 118
Technical support for your
Forum® telephone exchange 125

6

7
System Telephones on the Forum 500 / Forum 5000
System Telephones
on the Forum 500 /
Forum 5000
The Forum Phone 520 and Forum Phone 530 are corded system
telephones that you can operate on your Forum 500 / Forum 5000
communications system. The novel MenuCard display makes your
telephone easy to operate and gives you fast access to your sys-
tem’s wide range of different functions and features.
The Forum Phone 520 and the Forum Phone 530 have the same
functionality, the only difference being the size of the display and
the number of programmable keys available. Furthermore, the
Forum Phone 530 can be expanded by means of an add-on key-
pad module with a display (Forum Keypad 530). The
Forum Phone 520 and the Forum Phone 530 can be fitted with
various adapters to meet a wide range of specific requirements.
The Forum Phone 520 and the Forum Phone 530 are also available
as IP telephones (Forum IPhone 520 and Forum IPhone 530).
These telephones have the same functionality as the standard
system telephones. All of the functions described in this guide are
also available for the IP telephones.
You can activate the features and program functions on the tele-
phones themselves, or equally conveniently, use the Configura-
tor of theForum 500 / Forum 5000.
Familiarise yourself with your telephone. Using this guide, you will
learn how to use many new functions that make communication
and organisation easier.
The Glossary
Should you need further information about any system features
described in this user guide, please read the Glossary which
comes with your communications system.

Using Your Telephone8
System Telephones on the Forum 500 / Forum 5000
You Need Authorisation
Most of the features mentioned in this user guide are only availa-
ble to you if you have the appropriate authorisation. This will be
set up by your system administrator when configuring the com-
munications system.
If you are unable to use a particular feature or have any ques-
tions, consult your system administrator.
Dealing with Malfunctions
Please refer to the chapter entitled “Frequently Asked Questions”
in the “Mounting and Commissioning” (Forum 523/524,
Forum 525/526, Forum 550/560) resp. “Commissioning and Main-
tenance” (Forum 5050) user guide for tips on how you can deal
with any faults you may experience with your telephone.
Using Your Telephone
Safety Precautions
WARNING! Do not open the telephone or the connected
accessories, as this could lead to you touching live parts.
Note: Repairs must only be carried out by authorised Belgacom
service personnel.
zKeep fluids and chemicals away from the telephone and its
accessories.
zUse only the AC adapter plug included in the delivery (if
necessary).
zDo not use AC adapter plugs that show visible damage (e.g.
cracks in the housing).

Using Your Telephone 9
System Telephones on the Forum 500 / Forum 5000
Installation Site
Do not install the telephone or its accessories
znear water, moisture or in damp locations;
znear sources of heat or in direct sunlight;
zin unventilated rooms;
znear devices that generate strong magnetic fields, electrical
devices, fluorescent lamps, computers, radios or television
sets;
zin dusty places or places subjected to vibrations, shocks or
extreme temperature fluctuations.
Place the telephones on a non-slip surface. The surface finish of
your furniture may affect the telephone’s pedestals, softening
them and causing them to leave undesirable marks on your furni-
ture.
Cleaning
Simply wipe your telephone with an antistatic or slightly damp
cloth. Never use a dry cloth or a cleaning agent.
Adjusting the Inclination
Pull the pedestals out (1) and turn them forwards or backwards
(2) (two settings are possible). Then push them back in again to
fix their position (3).
1
2
3

Using Your Telephone10
System Telephones on the Forum 500 / Forum 5000
Wall Mounting
To mount your telephone to the wall, remove the pedestals by
pulling them out sideways, and insert them in the two recesses on
the bottom of the telephone so that it will hang directly against
the wall later. Using a screwdriver, pry the retention pin (1) for the
handset out of its receptacle, turn it upside down (2) and insert it
again.
To mount your telephone to the wall, drill two holes at the follow-
ing distance apart:
Insert 6 mm screws in the holes, making sure their heads pro-
trude 2.5 to 3 mm from the wall and mount the telephone onto
the screws.
Forum Phone 520 155 mm
Forum Phone 530 184 mm
1
2
3

Using Your Telephone 11
System Telephones on the Forum 500 / Forum 5000
Labelling the Keys
The five keys to the right of the display of the Forum Phone 520
can be programmed as call keys or programmed with destinations
or functions. The programming/assignment does not appear in the
display.
Inserting Label Strips
Label strips are supplied for the corresponding labelling. Proceed
as follows to label the insert:
zPress down slightly on the bottom part of the cover, sliding it
downwards so that the top part of the cover snaps out and you
can remove this and take out the label strip.
zReplace the printed strips.
zTo replace the cover, insert it in the slot, then slide it down and
finally slide it up until the catches snap into place.
Printing Label Strips
Using the Configurator of the Web console, you can print the
labels for a selected system telephone with the current key
assignment (Telephony: Devices: System phones menu).
Labelling Function Keys
If you have programmed a function key then you can enter a label
for this key which will be shown in the display. You will find further
information in the section Programming a Function onto a Key starting on
page 110.

Add-ons12
System Telephones on the Forum 500 / Forum 5000
Add-ons
On the back of the Forum Phone 520 and the Forum Phone 530
you will find sockets to which add-ons and accessories can be con-
nected, either directly or via various adapters:
zone socket on the Forum Phone 520, and
ztwo sockets on the Forum Phone 530.
The following components are supported by the Forum 500 /
Forum 5000:
zUpn adapter
Forum Phone 500 module 2nd Forum Phone
za/b adapter
zForum Phone 500 power supply 2nd phone
(on a Upn adapter and on an a/b adapter)
zAudio adapter
Forum Phone 500 module Headphone
The Forum Phones can be expanded as follows:
zthe Forum Phone 530 by up to three keypad modules
Forum Keypad 530.
Keypads are connected directly to the telephone (i.e. without
adapters).
Please refer to the chapter entitled The Keypad Module on the
Forum Phone 530 starting on page 31.
zForum Phone 520 and Forum Phone 530 can each be
expanded by the connection of a second Forum Phone.
A second telephone is connected via a Upn adapter
(Forum Phone 500 Module 2nd Forum Phone) and in addition
via an AC adapter, if this is necessary. Only a limited number of
system telephones can be connected in this way for operation
as second telephones.

Add-ons 13
System Telephones on the Forum 500 / Forum 5000
zForum Phone 520 and Forum Phone 530 can each be
expanded by various types of external audio equipment, e.g.
a headset or an external active speaker.
Connection is via an audio adapter.
Please refer to the chapter entitled External Audio Devices
starting on page 32.
The operating range of such add-ons depends on the maximum
power of the Upn interface of the communications system, and on
the power consumption of the respective equipment. The range
can be increased by the deployment of secondary AC adapters.
For the relevant technical details and a complete overview of the
various equipment combinations that you can configure, please
refer to the chapter entitled “Accessories and Adapters” in the
“Mounting and Commissioning” (Forum 523/524, Forum 525/526,
Forum 550/560) resp. “Commissioning and Maintenance”
(Forum 5050) user guide. Please also refer to the information on
the scope of available features in expanded equipment combina-
tions.
Note: Secondary devices are activated by the communications
system. The communications system detects whenever there are
two adapters of the same type on a Forum Phone 530. This is not
permitted, and for this reason, they are not released for opera-
tion.
CAUTION! Protect your equipment against static dis-
charge!
Static electricity can damage the sensitive components of the
Forum 500 / Forum 5000. To avoid such damage when connecting
add-ons, you must first discharge the static electricity from your
body. Work only in an antistatic environment. If possible, use con-
ducting pads or antistatic mats.

Add-ons14
System Telephones on the Forum 500 / Forum 5000
Module 2nd Forum Phone
A Module 2nd Forum Phone is an adapter with a Upn interface (1)
for connecting an additional Forum Phone, and a socket for an AC
adapter (2).
You can use the AC adapter on the Forum Phone 520 and on the
Forum Phone 530.
Note: Please operate only the AC adapter with the part no.
900 263 33 on the Module 2nd Forum Phone.
Module 2nd Forum Phone (Upn adapter) on the back of the
Forum Phone 520
In order to install an adapter, you have to remove the cover from
the back of the Forum Phone. Insert the Upn adapter in the socket
until it snaps into place. It is possible to install adapters during
operation: you do not have to disconnect the telephone from the
system in order to do this.
Note: In the case of a Forum Phone 530 you can plug a Upn
adapter into either of the two sockets. However, you can only
operate one Upn adapter on each Forum Phone 530.
Using the Upn adapter you can connect an additional
Forum Phone 520 or Forum Phone 530as a second telephone. A
second telephone connected via a Upn adapter is completely inde-
pendent of the first one. Connection via adapter is not a parallel
connection.
When connecting a second telephone, you require a UP cable. Use
this cable to connect the additional Forum Phone to the Upn
adapter (1) on the first telephone.
The 2-wire UP cable must not exceed 30 m in length. Depending
on the length of the cable and the type of Forum Phone connected
as a second telephone, there may be insufficient feed power. This
could result in a decrease of the ringer volume and the open
2
1

Add-ons 15
System Telephones on the Forum 500 / Forum 5000
listening/hands-free volume of the second telephone. The feed
power can be increased by connecting an external AC adapter (2).
Note: Upn adapters on the communications system can only be
operated on telephones directly connected to the system. A Upn
adapter is not permitted on a second telephone.
a/b Adapter
Using an a/b adapter, you can connect analogue telephones to the
Forum Phone 520 and Forum Phone 530 system telephones.
Technical Data
zDialling mode: DTMF
zCLIP is not supported on connected analogue telephones.
zCharge impulses are not transmitted, and charges are
therefore not displayed on analogue telephones.
Notes on Connecting a/b Adapters
The connection of an a/b adapter exceeds the feed power of the
Upn port (3 W), regardless of the range. For this reason you also
have to connect a power supply to the a/b adapter.
Note: Use the power supply with the part number 900 263 33!
You can connect one a/b adapter to a Forum Phone 520 or a
Forum phone 530.
You can connect one a/b adapter and one Upn adapter to a
Forum Phone 530. On the telephone connected via the Upn
adapter, a Forum Phone 520 for example, no a/b adapter can be
operated.
If you combine an Forum Phone 530 via an a/b adapter and a Upn
adapter with two other telephones (i.e. three telephones alto-
gether), you can make calls on a maximum of two of them
simultaneously.
CLIP = Calling Line Identification Presentation: Displays the tel-
ephone number of the caller.

Add-ons16
System Telephones on the Forum 500 / Forum 5000
Forum Phone 500 Module Headset
The Forum Phone 500 Module Headset (audio adapter) is an
adapter accessory with various sockets for connecting external
audio and signalling equipment. You can use audio adapters on
the Forum Phone 520 and on the Forum Phone 530 to connect
audio equipment and various accessories. The following interfaces
are available for external analogue equipment:
zone 4-pole socket (1):
for connecting an ear cap, a second handset, a headset, an
external active loudspeaker, headphones or an external
microphone
zone stereo socket (2):
for connecting recording equipment
A Forum Phone 500 Module Headset
on the back of a Forum Phone 520
The safe operation of equipment in combination with audio equip-
ment can only be guaranteed when you use certified, original
accessories. In order to avoid invalidating liability and warranty,
connect only audio equipment certified for this purpose via the
audio adapter. You will find a list of such equipment in the “Mount-
ing and Commissioning” (Forum 523/524, Forum 525/526,
Forum 550/560) resp. “Commissioning and Maintenance”
(Forum 5050) user guide. For further information, please contact
your Belgacom Sales Department.
In order to install an adapter, you have to remove the cover from
the back of the Forum Phone. Insert the audio adapter in the
socket until it snaps into place. It is possible to install adapters
during operation: you do not have to disconnect the telephone
from the communications system.
Connect the external equipment appropriately according to type.
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