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Back to the main page

Part 1
Installing a new MC 6501L/R
M C 6 5 0 1 L /R
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31

Installing a new MC 6501L/R 

This part describes all the tasks that must be carried out
for a successful first installation of the MC 6501L/R

Installing a new
System, from unpacking to completing the default

MC 6501L/R
configuration and testing the installation.

There is a total of six sections and it is recommended that

you go through each section in the order they are
presented, task for task, to install and set up the required
elements for your system. The sections are:

• “Before you start” covers all aspects of planning

the installation, checking the site and the customer
requirements.

• “Installing the hardware” includes safety measures

and takes you through the stages from unpacking
and mounting the cabinet(s), identifying and
installing circuit cards, to grounding the system.
Wiring to the main distribution frame and
connecting the VT 100 programming console and
peripherals are given in this section.

• “Programming overview” is about configuring the

programming console and understanding the
MC 6501L/R user interface. Instructions for
programming and using keystrokes are included.

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32

• “Initialising the system” is when the MC 6501L/R

is powered on and the system configures the
default settings.

• “Programming for a new installation” gives you a

range of options for adapting the default
configuration to suit the customer requirements.
This basic programming includes modifying the
system settings, creating an operator console,
defining user extension characteristics, setting up
automatic redial and unlocking key-coded
software.

• “Before you leave” is essential tidying-up. There

are several details that need to be finalised when
you have completed programming, for example
saving office data, resetting counters and
passwords, and testing basic functions.

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33

Before you start 

Installing a new
MC 6501L/R
SAFETY FIRST
Only experienced technicians should
service the system
The installer must be aware of the possible
electrical hazards to which they may be exposed
when installing the PBX.
It is essential to take every precaution necessary
for the safety of people and the PBX.

For the best results with the new MC 6501L/R

installation, use this section to help your preparation,
before you start installing. It contains an overview of the
complete installation procedure, a summary of ideal
conditions on-site, and checklists for all the equipment to
be installed. A reminder of the tools you need for
installing is given at the end of the section.

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34 New installation checklist

New installation checklist

✔ survey the customer site and carry out an
equipment inventory

✔ mount the cabinet(s) on the wall

✔ install the circuit cards
✔ wire to the main distribution frame
✔ connect trunks, terminals and sets, programming
console, and optional equipment

✔ replace the cabinet cover(s)

✔ ground and install power supplies
✔ set up the programming console
✔ power on and initialise the system
✔ program the new installation
✔ test your installation
✔ set up the remote access
✔ change the programming passwords
✔ back-up the configuration data
✔ hand over to the on-site system administrator

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35

Surveying the customer site 

To make sure the system has the correct conditions to
function properly, check the site before you begin
installing the PBX.

Installing a new
Here is a summary of the recommendations for the

MC 6501L/R
installation of the new MC 6501L/R:

✔ location
✔ environment
✔ space
✔ electricity

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36 Surveying the customer site

Location
✔ Unpacking, installation, operation, service, and
storage

Make sure there is adequate space for setting up

the PBX. You need room for a work table, phone
station, VT100 terminal/computer, printer, and any
other required peripheral devices.

✔ Main distribution frame (MDF) and batteries

Check there is a suitable location within 4 m

(13 ft) of the PBX for the MDF and batteries. The
MDF cable is 5 m (16 1/2 ft) long. Follow the
supplier instructions for the battery position.

✔ Minimum clearance

There needs to be a minimum clearance of

150 mm (5 in) above and 100 mm (4 in) below the
PBX for correct air flow. Check there is enough
space above the PBX to reinsert the screw on the
top of the cabinet.

✔ Electrical appliances

There must be a minimum distance of 4 m (13 ft)

from equipment such as photocopiers, electrical
motors and other equipment that can produce
electromagnetic or radio-frequency interference.

✔ Fire precautions

A fire extinguishing system such as a carbon

dioxide system needs to be in the room.
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37

Environment 
✔ General conditions

The room should be clean, dry, and well-ventilated

to allow free air flow.

Installing a new
MC 6501L/R
✔ Temperature

The room temperature should be regulated and not

vary beyond plus 5 and plus 35 degrees C (40 to
100 degrees F).

✔ Humidity

Humidity in the room should not vary beyond 5%

and 95%, non-condensing. Variations in humidity
must not exceed 30% per hour of operation.

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38 Surveying the customer site

Space required

11 12
10 1
9 2

8 3
7 4
6 5

24 cm
(9 1/4 in)

20 cm < d < 30 cm

minimum
main distribution 20 cm (8 in)
frame (MDF)

power cord
length 2 m (6 ft)

42,5 cm
minimum
20 cm (8 in)

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39

Electricity 
✔ Dedicated outlets for the main and second
cabinets, and the programming console: 230 V AC
nominal (or 120 V depending on the type of the
PBX power supply unit), 50/60 Hz, 10/16 A

Installing a new
minimum service with a third wire safety ground

MC 6501L/R
to provide shock protection and avoid
electromagnetic interference.

Risk of electric shock

The safety of installation technicians
depends on connecting this product to a
3-wire outlet connected to the building’s
overall earth. Use only with 3-pin outlets
(sockets and plugs): 2 phase conductors
and one earth.

✔ Outlets for other equipment as required.

✔ You may connect the PBX to an electrical outlet,
approved by your local regulator, with a third-wire
ground.

Note: Do not use an extension cord between the

electrical outlet and the PBX power
supply unit.

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40 Equipment checklist

Equipment checklist
For the new installation, the customer may want to
include existing equipment with the new MC 6501L/R
equipment. To have a full picture of the scope of the new
installation, use the following guidelines to complete
your installation inventory.

Existing customer equipment

If the customer has equipment for the new installation,
make an inventory of all the required elements and enter
the details in the Programming Record.
Customer-supplied equipment may include for example
an auxiliary ringer and an external music source.

New MC 6501L/R equipment

Equipment for the new system will be delivered in
individual boxes. To complete an inventory of the
delivered equipment, look for the package labelling and
enter the details in the Programming Record.

Understanding the package labelling

item name product code

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41

Tools for installation 

No special equipment is needed to install the PBX. Along
with general tools, such as a screwdriver, make sure you
have:

Installing a new
✔ adjustable joint pliers for cabling self-stripping

MC 6501L/R
(Stocko) connectors

✔ MDF insertion tool (Ref: PW1007A)

✔ a programming console, for example a PC running
a VT 100 terminal emulator or a VT 100 console

✔ a serial cable to connect the VT 100 programming

console to the PBX through the MDF

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42 Tools for installation

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43

Installing the hardware 

Installing a new
High leakage currents

MC 6501L/R
In the event of a power line fault near network
lines, service technicians must be aware of the
possibility of high leakage currents on metal
system surfaces. Leakage currents normally flow
safely through the power cord to protective ground.

Lightning voltage surges

Lightning voltage surges can be transmitted
through the installation supply cables and the
telephone lines:

• the area must be protected against

lightning voltage surges originating in
the electrical network

• the telephone system must be protected

against lightning surges. Use safety
modules between the public network and
the distribution frame.

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44 Procedure for installing the hardware

Procedure for installing the hardware

The table below summarizes the procedure for installing
the MC 6501L/R.

Equipment installation
1. Mounting the cabinet
➤Unpacking the cabinet Remove the MC 6501L/R from its
packaging
➤Mounting the cabinet on its Use the wall bracket to put the
support cabinet in place
➤Securing the cabinet to its Remove the power supply unit and
support tighten the screw until the cabinet is
secured to the wall bracket.
➤Connecting the cabinets. Connect the two cabinets together
using the cable delivered with the
expansion cabinet
2. Installing the cards
➤Installing the core switch cards Install the optional PROM devices,
then install the daughter cards on
the OCT3B card.
➤Installing the ISDN cards Install the ISDN primary rate cards,
then the base rate cards.
➤Installing the tie-line cards Install the cards to connect the
private trunk lines.
➤Installing the PSTN cards Install the cards to connect the
analogue trunk lines.
➤Installing the application cards Install specific application cards:
integrated router, V24 interfaces,
etc.
➤Installing the equipment cards Install the cards for connecting the
equipment lines: analogue
terminals and digital telephones.
- Sheet 1 of 2 -

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45

Equipment installation 
3. Wiring the MDF
➤Wiring the ISDN interfaces Wire the ISDN S/T access points
➤Wiring the analogue trunk lines Wire the analogue trunk lines
(PSTN)

Installing a new
➤Wiring the tie-lines Wire the private trunk lines (tie-

MC 6501L/R
lines)
➤Connecting the digital Connect the digital telephones
extensions
➤Connecting the analogue Connect single telephones, fax
terminals machine, etc.
➤Connecting the computer Connect the synchronous and
terminals asynchronous data terminals
➤Wiring optional equipment Connect various pieces of
equipment: general bell,
programming console, etc.
4. Preparing to power on
➤Earthing Connect the cabinets and the MDF
to the overall earth for the building
➤Installing the batteries Install and connect back-up
batteries
➤Placing the cover on the You must always replace the
cabinet(s) cabinet cover before pouting on
the system.
- Sheet 2 of 2 -

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46 Cabinet installation

Cabinet installation
This section is about installing the cabinet(s) on the wall.

The procedure is identical for the MC 6501R and the

MC 6501L cabinets. To install the cabinet:

• unpack the cabinet

• place the cabinet on its support

• secure the cabinet to its support.

You need enough space to unpack all the equipment and

should make sure that you can put unpacked equipment
in a safe place while you are working.

At each stage, check the equipment for any obvious

damage. If there is any damage to the equipment, you
may need to return it to your supplier.

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47

Unpacking the cabinet(s)


The package with the main cabinet contains the cabinet,
the power supply, the OCT3B card, the OCT3B MDF
cable, the power cord and self-stripping connectors
(stockos).

Installing a new
The optional cabinet is packaged with its own power

MC 6501L/R
supply, ROCT3 card, the bus extension cable, and the
power cord.

MC 6501L
MC 6501R
Main cabinet Extension cabinet

ADS 150 power ADS 300 power ADS 300 power

supply unit supply unit supply unit

integrated -- --
battery module

OCT3B CPU OCT3B CPU card ROCT3 card

card

OCT3B OCT3B distribution --

distribution frame cable
frame cable

supply cord supply cord supply cord

self-stripping self-stripping self-stripping

(Stockos) (Stockos) (Stockos)
connectors connectors connectors
-- -- bus extension cable

Considerations

• one cabinet of the MC 6501L/R weighs

approximately 18 kg (40 lb); unpack the equipment
as close to the final installation area as possible

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48 Cabinet installation

• the cabinet will not stand securely upright on a

table because of the cabling bracket on the bottom
of the cabinet; you may prefer to lie the cabinet on
its back

Steps

1 Check the packaging for any external

damage which may have occurred in transit
and record as necessary.
2 Put the cabinet package on the floor. Open
the box and fold back the carton flaps so that
the top of the box is completely free and you
can see the cabinet.
3 Roll the box over until the open side is on
the floor.
4 Lift the box off the cabinet. Keep the 100%
recyclable box in case it is needed for any
future transportation.
5 Place the cabinet on the table and remove the
protective casings from the sides (place them
back in the box).
6 Inspect the equipment for any damage and
record as necessary.

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49
1 2

Installing a new
MC 6501L/R
3 4
5 6
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50 Cabinet installation

Mounting the cabinet(s) on the wall

Each cabinet is secured to the wall on a bracket.

Considerations

• you need four fasteners appropriate to the type of

wall to mount each cabinet

• screws are provided to secure the cabinet to the

bracket, the power supply unit and the cabinet
cover

• the cabinet(s) should be mounted in a vertical

position no higher than eye level for easy access,
and not more than 1.70 m above the power point

• leave enough space above the cabinet(s) to replace

the screw for the front cover in place on the top of
the cabinet

• keep all screws and metal pieces from the

cabinet(s) in a safe place for later use

• leave the front cover in a safe place until you are

ready to close the cabinet after installing the circuit
cards

Steps
Note: if the MC 6501L/R is a two-cabinet
configuration, repeat this task.

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51

1 Remove the screw from the top of the

cabinet.


Installing a new
MC 6501L/R
2 Lift off the front cover.

3 From the main cabinet, take out the PBX

power cord and OCT3B MDF cable.

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52 Cabinet installation

4 Remove the cabinet wall bracket from the

back of the cabinet.

5 Using the bracket as a guide, mark three

points for drilling on the wall.

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53

6 Measure and mark the position of the fourth

screw.

7 Drill the holes and using appropriate
fasteners for the type of wall, secure the
bracket to the wall.

Installing a new
MC 6501L/R
100 mm 100 mm

4 mm
175 mm

8 The fourth fastener acts as a hook. Screw it

into position leaving 4 mm (1/4 in) jutting
out.

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54 Cabinet installation

9 Lift up the cabinet and hook it onto the

bracket and the fourth fastener on the wall as
illustrated below.

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55

Securing the cabinet to the wall 

1 Unplug the pre-installed 48V cable from the
power supply unit faceplate.
2 Unscrew the metal pieces that secured the

Installing a new
power supply unit during transport.

MC 6501L/R

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56 Cabinet installation

3 Using the finger grip on the power supply

unit, pull the unit out of the cabinet and put it
on a table.

4 Inside the cabinet, use the bracket screw to

secure the cabinet to the bracket as
illustrated below.

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57

Installing a new
MC 6501L/R
5 Reinsert the power supply unit in the cabinet
and secure it with the unit screws.
6 Reconnect the 48V cable to the M48V AUX
faceplate connector.

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58 Cabinet installation

Connect the MC 6501L/R cabinets

If the PBX is a two-cabinet configuration, the bus
extension cable is used to connect the two cabinets to
each other as shown below.

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59

Circuit card installation 

The power must be off when circuit cards
are inserted or removed to prevent damage
to the card or other system circuits

Installing a new
The MC 6501L/R has four types of circuit cards:

MC 6501L/R
• core switch cards for system processing, matrix
switching, tones and announcements

• trunk cards for connections to PSTN, ISDN, PSDN

and private networks

• application cards for data equipment and

transmission, software loading, voice mail

• equipment cards for terminals and sets

This section is arranged according to the type of card and

gives a summary of the card functions and the cabinet
location for the cards. It is recommended to install core
switch cards first, then trunk cards, application cards and
last, equipment cards. A table describing all the
MC 6501L/R circuit cards is given below.

Note: Rack 0 in the main cabinet has six synchronised

positions. It is recommended that trunk cards and
applications cards only are installed in this rack.

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60 Circuit card installation

Core switch cards

The main card for the MC 6501L/R is the OCT3B card,
installed in the main cabinet. Daughter core switch cards
can also be mounted on the OCT3B card (MOCT3,
VOCT3 and TOCT3). Installing the core switch cards
means equipping the VOCT3 card with PROM devices
(optional) and mounting the (optional) daughter cards on
the OCT3B card.

OCT3B also includes an internal battery used to save

configuration data. You must turn on the battery.

Card Function outline

OCT3B Main processor card (CPU).

This card can be equipped with 3 daughter cards:
MOCT3, TOCT3 and VOCT3. One card per
system.

ROCT3 Bus interface card for expansion cabinet.

This card functions as a driver/receiver of various
signals, adjusts cable delay timing, and monitors
the PCM bus. The card has 16 digital lines.
It is mounted in an expansion cabinet only. One
card per system.

TOCT3 This card has the tone detection function and

includes an additional switching matrix for a two-
cabinet configuration of the MC 6501L/R.
This card must be mounted on the OCT3B card if
an additional cabinet is being installed.

VOCT3 This card can be equipped with one or two

optional PROM devices: pre-recorded messages
and music-on-hold. This SRAM memory can store
a newly recorded greeting message of 64
seconds. This card must be mounted on the
OCT3B card.

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61

ISDN trunk circuit cards 

Card Function outline

LS1 ISDN:BRI trunk interface (2B+D).

This card can be used either as ISDN:BRI trunk

Installing a new
interface (T0) or ISDN line interface (S0).
This card has 2 T0 or 2 S0 or both (1 T0 + 1 S0).

MC 6501L/R
LT2 ISDN:PRI trunk interface (30B+D or 23B+D).
This card is used either as an ISDN primary rate or
PCM digital trunk.
It can be used for intra-office or inter-office
exchange networks on fixed path or over the public
network using QSIG signalling.

Analogue trunk circuit cards

Card Function outline

LR4 4-line central office trunk card.

Depending on the CO, LR4 must be equipped with
DTOC cards.

LR4A 4-line direct in-dialling trunk card.

This card has a loop detection and reverse signal
sending.
This card is internally equipped with -48V DC on-
card power supply.

LI1 2 tie-lines card.

This card has two circuits for tie-lines and can be
used either as 2W E&M or 4W E&M circuits.

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62 Circuit card installation

Digital trunk circuit cards

The LT2 card can be configured for many different PCM
formats.

Card Function outline

LT2 This card is used either as PCM digital trunk or

ISDN primary rate. The PCM digital trunk interface
can have 32 or 24 channels (time slots) at 2 Mbps.
It can be used for intra-office or inter-office
exchange networks on fixed path or through the
public network using QSIG signalling.

Application circuit cards

Card Function outline

CA1 This card has four RS 232C ports to connect up to

four asynchronous data terminals (DTE) in V28
and/or V10 modes. The four circuits provide a data
circuit-terminating equipment (DCE) function.
This card can have a maximum of two DTEs with
V10 interface.

CS1 This card has two RS 232C ports to connect two

synchronous data terminals (DTE) in V28 and/or
V10 modes.
This card can have a maximum of two DTEs with
V10 interface.
CP1 This card has two circuit-packet lines and is used
for the X.25 protocol (data packet transmission).
- Sheet 1 of 2 -

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63

Card Function outline 

CHP1 Loader card interface.
This card is used for loading a new software
release on the flash EPROM on the CPU card
(OCT3B).

Installing a new
FTXA 12 Khz detector card.

MC 6501L/R
This card is for metering pulse detection.
It is mounted on an LR4 card on the basis of one
for each CO line.

FTXC 50 hz detector card.

This card is for metering pulse detection.
It is mounted on an LR4 card on the basis of one
for each CO line.

DTOC This card is for detecting ground on tip wire.

It is mounted on an LR4 card on the basis of one
for each CO line.
- Sheet 2 of 2 -

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64 Circuit card installation

Equipment circuit cards

Card Function outline

LA4, LA8 Analogue terminal adapter line.

These cards provide circuits with disconnect
supervision and can be used for analogue
telephones, answer machines and any other
analogue terminal.
Loop resistance: max. 600 Ohm.
The LA4 card has 4 and the LA8 card 8 ATA
lines.

LN4, LN8 Digital line circuit card.

These cards are used for digital telephones
only:
-48 V, 2-wire type, line length: max. 1200 m
(3940 ft.)
The LN4 card has 4 and the LN8 card 8 digital
lines.

LM4, LM8 Digital and ATA line circuit card.

These cards manage both digital and ATA lines
at the same time.
The LM4 has 2 digital lines + 2 ATA lines.
The LM8 has 4 digital lines + 4 ATA lines.

LS1 ISDN line circuit card (S0)

This card is for connecting terminals with an
S adapter card.

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65

Identifying a circuit card 

Each card has a label including the identification code, ¾ For a full
approval and warranty date. The label does not give the description of the
function of the card. When you have unpacked the card, circuit cards, see
Appendix A.
set any switches as required, and insert the card in an

Installing a new
appropriate slot.

MC 6501L/R
Note: If a card is damaged, tag it with a description of
the problem and package it for return to the
supplier.

1 Open the carton and take the circuit card out

of the antistatic bag.
2 Identify the card and record the name and the
commercial code.
1 2
ON

6
CA6
ON ON ON J4
2 1 1
1 2 2 1
CA4 CA3 CA2

LT2
1 2 3 4 5 6 7 8
J1 J2
1 2 3 4 1 2 3 4 1 2 3 4 5
ON ON 1
CNMHJ3970BA01
J3 2
CA5 CA7 1 2 3 4 5 3
4
1 2 3 4 5
ON 6
7
CA8 8
9
10

CNMHJ3970BA01 LT2

product code card name

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66 Circuit card installation

3 Inspect the card components, faceplate, and

connectors for damage.
4 Put the card on the antistatic packing and set
the switches as required.
5 Insert the card in the appropriate position in
the PBX.

Installing a PROM device

The VOCT3 card can be equipped with one or two
additional PROMs. Install a PROM device before
installing the VOCT3 card on the OCT3B card.

Considerations

• unpack and install each PROM device separately to

make sure you have the PROM in the correct
position

• there is a small mark on both the PROM and the

VOCT3 card to indicate the correct placement of
the PROM. Make sure the marks match when
installing the PROM.

Steps

1 Take the PROM device out of the packaging.

2 Align the device with the appropriate

position marked on the VOCT3 card.
3 Press down gently in the middle of the
PROM to secure it in position.

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67


J1

J2

Installing a new
MC 6501L/R
Installing core switch cards
The central processing unit (CPU) for the MC 6501L/R
is the OCT3B card installed in the main cabinet.
Daughter core switch cards are mounted on the OCT3B
card. Equip the system with the optional OCT3B
daughter cards and switch on the internal battery.

Note: If there are no daughter cards, leave out steps 2

and 3.

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68 Circuit card installation

Considerations

• the VOCT3 card can be equipped with one or two

additional PROMs; if used, these should be
installed on the VOCT3 card first, then the VOCT3
card mounted on the OCT3B
Steps

1 Remove the OCT3B card.

Disconnect the power supply unit cable from
the OCT3B card and remove the card from
the cabinet
2 Install PROM devices.
If you are installing VOCT3 with optional
PROM devices, unpack and mount the
PROMs on the VOCT3 card as described
above.
3 Install daughter cards.
If you are installing any daughter cards
(TOCT3, VOCT3 or MOCT3), mount these
cards on the OCT3B card.

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69


4
J12

Installing a new
1
4
J20
1

MC 6501L/R
J7
VM

J6
TOCT3 VO2
VUC
SYN

2
IN M48V J13
1

RELAIS ALARME
J4 9
MOCT3

J9

12V
16 8
4

J3
1

RESET
21 40

1 20
NIVEAU MUS.
J5

8
1
7
6 5
5
J2
VOCT3

4
3
BATT. 2 8
1 4
J15

NMI
SW2

PILE
OFF
ON

J11
J1 4
ON J14
DEBUG

4
3
1
2 4
1
CA2
NORMAL
SPECIAL

D
1
C
CONSOLE
B
A
ON

MASTER
CA1

4 Switch on the OCT3B battery.

On the OCT3B card, set the internal battery
switch on.

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70 Circuit card installation

5 Replace the OCT3B card.

Insert the OCT3B card into the main cabinet.
Apply a small amount of pressure with both
hands to push the unit straight into the
backplane connector. Make sure the card is
not loose.
6 Reconnect the power supply unit cable to the
OCT3B card.

OCT3 card

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71

Installing ISDN:PRI trunk cards 

Equip the system with ISDN primary rate interface trunk
cards to connect with private or public networks.

Considerations

Installing a new
MC 6501L/R
• switches for LS2 are CA1, CA3 and CA4 for line
characteristics; CA2 for clock signals

• LT2 has many PCM frame formats to meet local

telecommunication regulations; switch settings are
shown in the task Configuring an LT2 card

Rack positions
Rack 0

Card 0 1 2 3 4 5

LS2 NO NO NO NO YES YES

LT2 NO NO NO NO YES YES

Steps

1 Set the option switches and/or jumpers on

the card. See Appendix A.

When setting switches on a circuit

card, carry out the work standing
on a grounded conductive surface

2 Insert the card into the card cage along the

alignment guides in the correct slot. Apply a
small amount of pressure to push the unit
straight into the backplane connector.

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72 Circuit card installation

Configuring an LT2 circuit card

Installing ISDN:BRI trunk cards

Equip the system with ISDN basic rate interface trunks to
connect with the private or public networks.

Considerations

• ISDN:BRI cards must be configured according to

requirements before installation. Check the
configuration of the SW1 and SW2 LS1 card
switches

• if you have ISDN:PRI in rack 0 slot 5, then

ISDN:BRI in slot 3 must have the clock
deactivated

• if you have ISDN:PRI in rack 0 slot 4, then

ISDN:BRI in slot 2 must have the clock
deactivated

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73

Rack positions
Rack 0

Card 0 1 2 3 4 5

LS1 (T0) YES YES YES YES NO NO

Installing a new
LS1 (S0) YES YES YES YES YES YES

MC 6501L/R
Rack 1

Card 0 1 2 3 4 5 6 7

LS1 (S0) NO YES YES YES NO NO NO NO

Steps

1 Configure the card.

Set the option switches and/or jumpers on
the card. See Appendix A.

When setting switches on a circuit

card, carry out the work standing
on a grounded conductive surface

2 Install the card.

Insert the card into the rack along the
alignment guides in the correct slot. Apply a
small amount of pressure to push the unit
straight into the backplane connector.

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74 Circuit card installation

Installing tie-line circuit cards

Equip the system with tie-lines connecting private
networks.

Considerations

• switches for LI1 using 2W E&M or 4W E&M are

CA1 for equipment 0 on connector J2, and CA2 for
equipment 1 on connector J3

• switches for LT2 as PCM tie-line are CA5 and

CA7; the switches will depend on which end is
master, and which end is slave

Rack positions
Rack 0

Card 0 1 2 3 4 5

LI1 YES YES YES YES YES YES

LT2 NO NO NO NO YES YES

Steps

1 Set the option switches and/or jumpers on

the card. See Appendix A.

When setting switches on a circuit

card, carry out the work standing
on a grounded conductive surface

2 Insert the card into the card cage along the

alignment guides in the correct slot. Apply a
small amount of pressure to push the unit
straight into the backplane connector.
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75

Installing PSTN daughter cards

Equip PSTN circuit cards with daughter cards for

detecting the metering pulse and/or analogue disconnect
supervision.

Three types of daughter cards can be mounted on PSTN

Installing a new
cards, depending on the CO signalling:

MC 6501L/R
• DTOC card for disconnect supervision

• FTXA and FTXC for metering

Configuring DTOC switches

SW2 SW1 SW0 Frequency Using

OFF OFF OFF 375-475 Germany/Belgium/Chile/

Spain/Finland (500/500)/
France/Ireland (500/500)/
Italy/Peru/Portugal/Switzerland

OFF OFF ON 375-475 China/Finland (685/685)/

Ireland (750/750)

OFF ON OFF 375-475 Australia/Ireland (385/385)/

Czech Republic/Russia

OFF ON ON 430-530 Hong Kong/Taiwan/USA

ON OFF OFF 375-475 Brazil/India/Singapore

Sensitivity
The sensitivity of the device can be adjusted to two
amplitude ranges in the transmission power level.

Recommended position: SW3 -> OFF

SW3 position OFF ON

Amplitude range (dBm) -3/-25 -3/-32

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76 Circuit card installation

Installing a DTOC card

DTOC daughter cards detect ground on a tip wire and are
installed on LR4 cards for analogue disconnect
supervision (DS), if the central office does not provide
DS. One card for each trunk line is required.

• plug each DTOC daughter card on the appropriate

connector as shown below.

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77

Installing a metering pulse daughter card 

Two different daughter cards can be installed on LR4
circuit cards:

• FTXA detects a 12 kHz call metering pulse

Installing a new
MC 6501L/R
• FTXC detects a 50 Hz call metering pulse

Considerations

• one metering pulse card is required for each trunk

line

Steps

• Mount each daughter card as required on the PSTN

card as shown in the figure below.

S1.1
ON

OFF

1 2 3 4

S1.2
ON

OFF

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78 Circuit card installation

Installing PSTN trunk cards

Equip the system with PSTN trunk lines.

Considerations

• these cards can be installed in any position in rack

0 and rack 1 except positions 0 and 4 in rack 1

• switch settings for LR2 and LR4 are S2 for call

metering frequency and S1.x for CO line
characteristics

• switch settings for LR4A are S1.x for CO line

characteristics

Rack positions
Rack 0

Card 0 1 2 3 4 5
LR4, LR4A YES YES YES YES YES YES

Rack 1

Card 0 1 2 3 4 5 6 7
LR4, LR4A NO YES YES YES NO YES YES YES

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79

Steps 
1 Install daughter cards.
If you need daughter cards to connect to the
PSTN, install these on the PSTN trunk cards
first.

Installing a new
2 Set the option switches and/or jumpers on

MC 6501L/R
the card. See Appendix A.

When setting switches on a circuit

card, carry out the work standing
on a grounded conductive surface

3 Insert the card into the card cage along the

alignment guides in the correct slot. Apply a
small amount of pressure to push the unit
straight into the backplane connector.

Installing application circuit cards

Equip the system with application circuit cards for
example connecting data terminals.

Considerations

• switches on CA1 are to select V10 or V28 mode;

the switches to set are SW1, SW2, SW3 and SW4

• CP1 has no switch settings

• switches on CS1 are to select V10 or V28 mode;
the switches to set are SW1 and SW2

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80 Circuit card installation

Rack positions
Rack 0

Card 0 1 2 3 4 5
CA1, CP1, CS1 YES YES YES YES YES YES

Rack 1

Card 0 1 2 3 4 5 6 7
CA1, CP1, YES YES YES YES YES NO NO NO
CS1

Steps

1 Set the option switches and/or jumpers on

the card. See Appendix A.

When setting switches on a circuit

card, carry out the work standing
on a grounded conductive surface

2 Insert the card into the card cage along the

alignment guides in the correct slot. Apply a
small amount of pressure to push the unit
straight into the backplane connector.

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81

Installing equipment circuit cards 

Equip the system with circuit cards for extension lines.
Digital, analogue terminal and ISDN lines are available,
depending on the equipment circuit card.

Installing a new
Considerations

MC 6501L/R
• there are no switch settings on equipment circuit
cards

Rack positions
Rack 0

Card 0 1 2 3 4 5
LA4, LA8 YES YES YES YES YES YES

LM4, LM8 YES YES YES YES YES YES

LN4, LN8 YES YES YES YES YES YES

Rack 1

Card 0 1 2 3 4 5 6 7
LA4, LA8 YES YES YES YES YES YES YES YES

LM4, LM8 YES YES YES YES YES YES YES YES

LN4, LN8 YES YES YES YES YES YES YES YES

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82 Circuit card installation

Rack 2

Card 0 1 2 3 4 5
LA4, LA8 YES YES YES YES YES YES

LM4, LM8 YES YES YES YES YES YES

LN4, LN8 YES YES YES YES YES YES

Rack 3

Card 0 1 2 3 4 5 6 7
LA4, LA8 YES YES YES YES YES YES YES YES

LM4, LM8 YES YES YES YES YES YES YES YES

LN4, LN8 YES YES YES YES YES YES YES YES

Step

• Insert the card into the card cage along the

alignment guides in the correct slot. Apply a small
amount of pressure to push the unit straight into the
backplane connector.

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83

Cabling the main 

distribution frame

Installing a new
MC 6501L/R
Protection against line surges
For new installations, we recommend that you
use safety modules to protect against PSTN
line surges.
Insert these modules between the installation
main distribution frame and the public
network.

To wire the MC 6501L/R you do not need an exclusive

wiring system. Nonetheless, the “Premises Distribution
System” (PDS) is recommended. This is a standardized
ANSI/EIA system. It has ISO-type characteristics and is
suitable for wiring categories 1 to 5.

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84 Organisation of the MDF

Organisation of the MDF

The installation MDF consists of tag-block supports with
cut-off strips. The diagram below gives an example of the
organisation of an MDF.

PSTN trunk lines

LR4 and LR4A cards

ISDN S/T reference points

LSx, LT2 cards

telephones and terminals

OCT3, ROCT3,
LAx, LNx, LMx cards

data terminals
CS1, CA1 cards

optional equipment

reserved
+12V/+40V/+48V

Distribution MC 6501L/R
(customer side) (PBX side)

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85

Wiring the PBX to the MDF 

Pre-wired MDF cables are used for easy termination of
circuit cards from the system to the main distribution
frame (MDF). An MDF cable is a shielded twisted pair
cable. Each cable is labelled using a cable designation.

Installing a new
MC 6501L/R
2

1
4

3
legend :
1- OCT3B MDF cable
2- cable hooks
3- MDF module
4- MDF connectors
local side PBX side

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86 Organisation of the MDF

1 Run the MDF cable up through the cable

hole on the bottom right hand side of the
cabinet.
2 Place the stripped cable twist between the
clamp. Secure the shield bracket over the
MDF cable with the two nuts to ensure
electromagnetic continuity.
✩ Wire all available 3 On the PBX side, pare the plastic coating on
connectors ready the MDF cable and wire it using self striping
for future use. connectors “stocko”.
4 Connect the MDF cable to the circuit card
connectors.

guide holes polarising

slot
A B
pair Pair

Press
open connector
view
closed connector
view

Insert the wires to be connected in the guide

holes provided (A and B). Press in with
adjustable pliers to ensure correct insertion
of the wires.
5 On the MDF side, using a connecting tool,
terminate the cable to the MDF connectors.

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87

Wiring the OCT3B MDF cable


20
22 0 40 0

To f aceplat e
O CT3 boar d

Installing a new
MC 6501L/R
A lar m
Relay

To M DF
connect or s Clock signal
f or wir eless

Pr int er &
Ex t er nal
music sour ce

Console

Shield

J2 J3 J9 J10
# Color Signal Function
(2x4 pts) (4 pts) (2x8 pts) (4 pts)

grey A8 JP12
1 white B8 GND Relay 1
none A7 R1A (toggle)
blue B7 R1B

grey A6 R2A Relay 2

yellow B6 R2B degraded service
2
none A5 R3A Relay 3
brown B5 R3B night service
(general bell)
grey A4 R4A Relay 4
black B4 R4B (alarm)
3
none A3 R2C Relay 2
red B3 GND degraded service

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88 Organisation of the MDF

J2 J3 J9 J10
# Color Signal Function
(2x4 pts) (4 pts) (2x8 pts) (4 pts)

grey A2 NAL0 UAD

4 green B2 NAL1 (not used)
none A1 NAL2
white B1 NAL3

grey 1 NHCT
5 blue 2 PHCT Synchronisation
none 3 NHCT signal for DECT
yellow 4 PHCT Radio-base
Station

grey A2 MUSA
6 brown B2 GND External music
none A1 ETM source
black B1 GND
grey A4 TXD
7 red B4 RXD Printer
none B3 GND
green A3 DTR

orange 1 RX2
8 white 2 TX2 Programming
violet 3 GND console
blue Non (VT 100)
connect

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89

Wiring ISDN interfaces 

ISDN trunk cards offer one T, S or S/T loop at base rates
(S0/T0) or primary rates (S2/T2).

The S/T loop can be configured to provide:

Installing a new
MC 6501L/R
• an S reference point connection to an ISDN/S
terminal or a computer

• a T reference point connection to an ISDN

network.

These cards also support D-channel packet service

between a network and terminal connection.

To wire an ISDN interface you need 2 pairs: 1 emission

and 1 reception pair.

CAUTION
Beware of the Tx/Rx pair polarity.
The emission and reception pairs are polarized. Be careful
not to reverse the polarities
Two pairs are used to transmit the digital signals, one for
each direction of transmission. Do not mix up these pairs.

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90 Wiring ISDN interfaces

Cabling ISDN:PRI trunks

According to the configuration of the switches, with the
LT2 card you can connect to reference point T2 or S2,
obtaining a rate of 2 Mbit/s. Before you start wiring,
check the configuration of switch CA8 on the card.

Note: Use of T2 or S2 is confirmed by operation

(programming).

You must terminate the 120 Ohm connection cable at

each end using RJ45 male connectors (ISO 8877).

to public network

shielding

transmission pair
J4 at network termination

shielding

reception pair
LT2 card
at network termination

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91

Cabling ISDN:BRI trunks (T0) 

According to the configuration of the switches, you have
two connections available with the LS1 card. You can
connect to reference point T0 and/or S0. You must
terminate the connection cable at the end using RJ45

Installing a new
male connector (ISO 8877).

MC 6501L/R
Note: before you start wiring, check the configuration
of the switches on the card.

NT1
5 4 6 3

J3 4 R-
R+
and/or
J4
1 E-
E+

LS1 card

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92 Wiring ISDN interfaces

Cabling ISDN:BRI bus (S0)

The S0 bus is a 2-pair shielded flat cable. Based on the
topology and the length of the bus, you can connect 1 to 8
RJ45 female connectors for a maximum of 4 ISDN/S0
terminals.

Network termination

NT1
5 4 6 3

R-
4
LS1 (T0) R+
T reference
point (T0) E-
1
E+

1
E-
2
4 E+ 3
LS1 (S0)
4
S reference
100
100
R- 5
point (S0)
1 6
R+ 7
8

RJ45 plug

Short bus (point-to-multipoint)

T0 S0 connector 1 connector 8
PBX connector equipped with
TNR a resistor (100 Ohms, 1/4W)
for bus adaptation

TE1 TE4

maximum 130 m

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93

Long bus (point-to-multipoint) 

T0 S0 connector 1 connector 4
PBX connector equipped with
NT1 a resistor (100 Ohms, 1/4W)
for bus adaptation

Installing a new
TE1 TE4
30 m

MC 6501L/R
maximum 500 m

Long bus (point-to-point)

T0 PBX S0 connector 1
connector equipped with
NT1 a resistor (100 Ohms, 1/4W)
for bus adaptation

TE1

maximum 800 m

S0 Y bus (90 m)

L1 m

connector equipped with

a resistor (100 Ohms, 1/4W)
connector 1 for bus adaptation

T0 PBX S0

TE1
NT1

connector 2

connector equipped with

a resistor (100 Ohms, 1/4W)
TE4 for bus adaptation
L2 m

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94 Wiring ISDN interfaces

An S0 bus in connected to the LS1 card. 40V power is

fed from the power supply unit, as shown below. You
must terminate the other end using a male RJ45
connector (ISO 8877 compliant).

1
ES-
4 2
ES+ 3
4

100
100
RS- 5
1
6
RS+ 7
8

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95

Cabling PSTN trunk lines 

Loop start trunks can be connected through the MDF to
the following cards:

Circuit card Connector N° of trunks

Installing a new
MC 6501L/R
LR4 J2 and J3 4

LR4A (DID J2 and J3 4

analogue trunk
lines)

You can connect 4 analogue trunk lines with the LR4

card. The LR4 card supports trunk signalling and
analogue disconnect supervision (DS) function. The DS
analogue signal must be supplied by the central office
(CO) to be detected by the LR4 card.

If the public network does not send this signal, the LR4
card must be equipped with a DTOC daughter card.

Note: The code for the LR4 card without DTOC is

HJ2765BA and with DTOC, the code is
HJ2765FA.

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96 Wiring ISDN interfaces

Use LRx card to connect analogue trunk lines to public

switches as shown in the figure below.

safety modules
(PSTN line surges)

CO line 1

CO line 2
public
network
CO line 3

CO line 4
LRx card

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97

Cabling an analogue tie-line 

Tie lines are private or leased lines connecting two
private switches together. There are two types of
connection:

Installing a new
• analogue (2- or 4-wire)

MC 6501L/R
• digital (PCM or QSIG).

The LI1 card, reference code: HJ3950B, connects two

analogue tie-lines. These are either 2-or 4-wire tie-lines:

• For a 2-wire tie-line, the voice is transmitted in

both directions on the same pair (LA and LB)

• For a 4-wire tie-line, one pair is dedicated to

receiving and the other to emitting.

Note: A cable, reference code HG4066A, is used for

wiring the analogue tie-line of card LI1.

maximum 5 m (10 twisted pairs)

10

C1

10

C2

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98 Wiring ISDN interfaces

LI1 equipment
Colour Connector Signal Description
card
BeC C1-1 T01
Ba C1-2 R01
BeC C1-3 R00
Be C1-8 TB00
signalling
BeC C1-4 LRB0 "Phonic” pairs
pairs Equipment 0
J C1-5 LRA0
(J2 connector
BeC C1-6 LERB0 on card LI1)
M C1-7 LERA0
BeC C1-9 TA00
N C1-10 GND Earth
(mass)
BeC C2-1 T11
R C2-2 R11
BeC C2-3 R10
Ve C2-8 TB10
signalling
G C2-4 LRB1 “Phonic” pairs
pairs Equipment 1
Ba C2-5 LRA1
(J3 connector
G C2-6 LERB1 on card LI1)
Be C2-7 LERA1
G C2-9 TA10
J C2-10 GND Earth
(mass)

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99

Wiring a 2-wire tie-line 

Installing a new
MC 6501L/R
4 3 2 1 4 3 2 1
OFF OFF

ON ON

Wiring a 2-wire tie-line with E&M signalling

4 3 2 1 4 3 2 1
OFF OFF

ON ON

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100 Wiring ISDN interfaces

Wiring a 4-wire tie-line

4 3 2 1 4 3 2 1
OFF OFF

ON ON

Wiring a 4-wire tie-line with E&M signalling

4 3 2 1 4 3 2 1
OFF OFF

ON ON

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101

Connecting MC 6501L/R digital

telephones

MC 6501L/R digital telephones can be connected
through the MDF to the following cards:

Installing a new
Circuit card Connector N° of lines

MC 6501L/R
LN4 J2 and J3 4

LN8 J2, J3, J4 and J5 8

LM4 J4 2

LM8 J4 and J5 4

OCT3B (CPU card) J12 and J20 4

ROCT3 J4 to J11 8

The requirements for MC 6501L/R digital telephones

are:

• line length:
0.4 mm (3/8 in) wire: approx. 1 km (3000 ft)
0.6 mm (5/8 in) wire: approx. 1.8 km (5400 ft)
Note: Screened cables are specified.
• It is essential to comply with the standards
between weak and strong currents.
The minimum distance between the telephone
cable and the source of disturbance (electrical
conductor, neon with starter, etc.) is 30 cm.

• do not connect two telephone outlets to the PBX in

parallel

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102 Wiring ISDN interfaces

• MC 6501L/R digital telephones cannot be used as

emergency stations such as a power fail telephone

The table below gives the main characteristics of the

telephones with displays:

MC405 MC420E MC520 MC640

Secrecy key ➤ ➤

Redial key ➤ ➤ ➤ ➤

Number storage
(10)
Amplifier ➤ ➤ ➤ ➤

Ring volume 4 8 8 8
control
Set melody 8 8 8 8
Hold key) ➤ ➤ ➤ ➤

Hands free ➤ ➤

Intercom ➤ ➤
function
Screen 1x16 1x16 2x40 2x40
Function keys 2* 7 8 8
with LED
Programmable 5 20 20 40
keys with LED
Interactive keys 5 5

*function keys without screen

All MC 6501L/R digital telephones are protected against
most faults such as short-circuits and connection to a
single-line connector. In each case the station remains
silent.

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103

OCT3B and ROCT3 digital lines must be powered by the

ADS power supply unit using an external cable as shown 
below.

Installing a new
MC 6501L/R
All MC 6501L/R telephones can be installed as desk-top
phones. The MC405 can also be mounted on a wall. To
do this:

1 Remove the 2 tabs from the cover.

2 Using an appropriate screwdriver, unscrew

the screw.
3 Put two screws on the wall.

4 Turn the lug 180 degrees to mount on the

wall behind the extension.

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104 Wiring ISDN interfaces

Installing an external sector block

You can add a sector block to MC520 and MC640
telephones, to protect the switch from excessive
consumption (frequent use of more than 10 LEDs).

Note: The power supply to this sector block must be

230V AC single-phase current, except for IT
diagram installations, defined in the standard,
NF EN 60.950.

If the MC520 or MC640 extensions also include an

MC600, then connect the sector block to the MC600.

In all cases, connect the sector block using an RJ45 type

connector (8 point).

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105

Installing the MC600 extension module 

The MC600 extension module provides an additional 20
keys for the MC520 and MC640 telephones, with
associated LEDs. Connect as shown in the picture below:

Installing a new
MC 6501L/R
Connecting headphones
Headphones are available from several manufacturers
(GN Netcom, LEM, Plantronics, etc.).

Connecting a modem
Incoming modem access is possible for the MC420E,
MC520 and MC640 models.

Connect the modem at contacts 2 and 4 to avoid any

errors with the line input.

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106 Wiring ISDN interfaces

Connecting a BF outlet
An audio connection is available for some telephones:

MC420E, MC520 and MC640.

The stereo jack provides an input and an output. These

can be connected to a PC sound card with the appropriate
cable.

Connecting analogue terminals

The MC 6501L/R has analogue junctors designed to be
compatible with various equipment including telephone,
commercial fax, modem, answer machine and voice
mail.

They can be connected through the MDF to the following

cards:

Circuit card Connector N° of lines

LA4 J2 and J3 4

LA8 J2, J3, J4 and J5 8

LM4 J2 2

LM8 J2 and J3 4

To connect an analogue terminal, the requirements are:

• the voltage and current measured across the station

during conversation must be:
U > 12.4 V and I > 25 mA

• line resistance including stations: 600 Ohm

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107

• line length:
0.4 mm (3/8 in) wire: approx. 2 km (6000 ft)

0.6 mm (5/8 in) wire: approx. 3.5 km (10,500 ft)

• all analogue stations connected to the system must

be set to Zref Impedance and self-regulation

Installing a new
MC 6501L/R
8 plots
connector

line 1 1 3
4. L1-1
4 3. L1-2

line 2
1 2. L2-1
1. L2-2 4
5
LAx or LMx card

RJ45

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108 Wiring ISDN interfaces

Wiring an analogue power fail telephone

You can use an analogue telephone as a power fail
telephone (PFT) with a loop start trunk to provide an
emergency service if there is no power to the PBX.

Note: During a power disruption, an ISDN terminal

sharing an S/T multi-point bus with the PBX
may act as a power fail telephone service.

OCT3 card

Control loop

12V threshold signal

(maximum 1A)

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109

Connecting data terminals 

Cards CA1 and CS1 enable you to connect computer
terminals (DTE or DCE) in V24/V10 mode:

• The CA1 card provides 4 asynchronous terminal

Installing a new
connections (max. speed: 19200 bit/s). Flux is

MC 6501L/R
controlled through XON/XOFF.
Note: The V24/V10 interface is compatible with
V24/V28 (RS232C) equipment.

• The CS1 card provides 2 synchronous SNA/SDLC

connections up to 19200K bit/s and SNA/X25 up to
64K bit/s.

DTE-P

synchronous serial link public network

type : “HDLC-LOCAL” (PSTN/ISDN/X25)

MC 6501L DCE

DCE
DCE CS1
DTE DCE
DCE
CS1
DTE-C DCE

system
DCE synchronous serial link
DCE CA1
DCE type : “PSDN link (X.25)”

asynchronous serial link

type : “PAD”

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110 Connecting data terminals

Wiring an asynchronous serial link

Use the HG289A serial link screened cable to connect
asynchronous data terminals in V24/V10 mode to CA1.

Connecting a DTE

Description DTE
t Direction Connector J2
Circ . 25 CA1-->ETCD to J5, CA1 card
CCITT EIA CA1 9 pins
pins
103 RD RD NDE 3 2 ---> A1 data emitted
104 ED ST or NDR 2 3 <--- A2 data
TD received
108 TDP DTR DTR 4 20 ---> A3 outlet for
card
106 PAE CTS CTS 8 5 <--- A4 input for flux
control
104 TS GND SGND 5 7 <---> A5 0V
B1 not wired
B2 not wired
105 DPE RTS RTS 8 5 ---> B3 output for
flux control
109 DS CD CD 1 8 <--- B4 input for
presence of
terminal
RET B5 0V return for
junction input
(V10)

Note: Circuit 107, “data station ready” (PDP or DSR)

is not on CA1. The straps are not represented in
this table.

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111

Connecting a DCE
(For example, case EBV, modem, V24 adaptor)

Description DTE
Direction Connector J2

Installing a new
t
Circ . 25 CA1-->ETCD to J5, CA1 card
CCITT EIA CA1 9 pins

MC 6501L/R
pins

103 RD RD NDE 3 <--- A1 data emitted

104 ED ST or NDR 2 ---> A2 data
TD received
108 TDP DTR DTR 4 <--- A3 outlet for
card
106 PAE CTS CTS 8 ---> A4 input for flux
control
104 TS GND SGND 5 <---> A5 0V
B1 not wired
B2 not wired
105 DPE RTS RTS 8 <--- B3 output for
flux control
109 DS CD CD 1 ---> B4 input for
presence of
terminal
RET B5 0V return for
junction input
(V10)

Note: Circuit 107 “data station ready” (PDP or DSR) is

not present on CA1. The straps are not shown in
this table.

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112 Connecting data terminals

Wiring a synchronous serial link

Use the screened serial link cable, HG2830A, to wire the
interfaces of card CS1.

Connecting a DTE

V24 signals description DTE ISO

Direction
Circ. 2110 J2/J3, CS1 card
CCITT EIA CS1* CS1-->DCE
(25 pts)
103 RD RD NDE 2 <--- A1 data emitted
104 ED ST or NDR 3 ---> A2 data received
TD
108 TDP DTR DTR 20 <--- A3 outlet for card
106 PAE CTS CTS 5 ---> A4 input for flux
control
104 TS GND SGND 7 <---> A5 0V
115 HRM RC HR 17 <--- A6 clock received
for data received
24 ---> B1 clock emitted
<--- B2
105 DPE RTS RTS 5 B3 output for flux
control
109 DS CD CD 8 <--- B4 input for
presence of
terminal
RET ---> B5 0V return for
junction input
(V10)
114 HEM TC HT 15 <--- B6 clock received
for data emitted

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113

Connecting a DCE 
V24 signals description DCE ISO
Direction
Circ. 2110 J2/J3, CS1 card
CCITT EIA CS1* CS1-->DCE
(25 pts)
103 RD RD NDE 2 <--- A1 data emitted

Installing a new
104 ED ST or NDR 3 ---> A2 data received

MC 6501L/R
TD
108 TDP DTR DTR 20 <--- A3 outlet for card
106 PAE CTS CTS 5 ---> A4 input for flux
control
104 TS GND SGND 7 <---> A5 0V
115 HRM RC HR 17 <--- A6 clock received
for data received
24 ---> B1 clock emitted
<--- B2
105 DPE RTS RTS 5 B3 output for flux
control
109 DS CD CD 8 <--- B4 input for
presence of
terminal
RET ---> B5 0V return for
junction input
(V10)
114 HEM TC HT 15 <--- B6 clock received
for data emitted

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114 Connecting various equipment

Connecting various equipment

Connecting the VT 100 programming

console
The programming console is used to interface with the
PBX for programming, visualising parameters and
printing system data when a printer is connected to the
programming console. It can be a VT100 console or a PC
with VT100 emulation, which must have an RS 232C
port and cannot be located more than 15 m (50 ft) from
the system. The programming console can be connected
to the system either directly or remotely. Direct
connection is through the MDF to the console connector
of the OCT3B card (see the figure below) and remote
connection is available through either an internal modem
on the OCT3B card or an external modem.

female DB 25 pins female DB 9 pins

connector (solder side view) connector (solder side view)

MDF

4.
3. GND
2. TXD
1. RXD

J10
OCT3B card

Note: Using a PC as a programming console is

recommended. The customer configuration can
only be saved on PC.

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115

Connecting a serial printer 

The serial printer is used to print SMDR tickets issued by
the system.

Connect the operating printer, via the MDF, on

Installing a new
connection points 3/7/4 of connector J2 on the OCT3B

MC 6501L/R
card, using a 2-pair cable.

Note: The printer’s TXD link is not required for this to

operate correctly.

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116 Connecting various equipment

The configuration of the serial printer (RS232C) must be

as follows:

Rate 9600 bit/s

Data bits 8 bits
Parity no parity
Stop bit 1 bit stop
The distance to be complied with is the distance specified in
the standard RS 232c (approximately 15 m)

Connecting an external music source

Music for callers on hold and background music can be
supplied by any approved low-power equipment such as
a tape with a high-impedance earphone jack.

CAUTION
The use of an external music source is subject to the
payment of SACEM royalties (Society of music authors,
composers and publishers - France)

The recommended MC 6501L/R input level is 35mV rms

across an input impedance of 15 kOhm.

When an external music device is connected to the

MC 6501L/R, the 12V signal must be re-looped on the
ETM tab so that the software can detect it. The external
music is then used over any internal music source that
may be available.

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117

Connecting an external music source 

Music for callers on hold and as background music can
be supplied by any approved low-power equipment such
as a tape with a high-impedance earphone jack.

Installing a new
The recommended MC 6501L/R input level is 35mV rms

MC 6501L/R
across an input impedance of 15 kOhm.

When an external music device is connected to

MC 6501L/R, the 12V signal must be re-looped on the
ETM tab so that the software can detect it. The external
music is then used over any internal music source that
may be available.

To install an external music source :

1 Connect the music source output to the MDF

ensuring the input ground is connected to the
music source ground, as shown in the figure
below.

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118 Connecting various equipment

2 Turn the potentiometer R318 to adjust the

volume of the music source on the OCT3B
card.

After you install the external music source and start the
installation, you can use operating menu 5.1 (Defining a
tone) to replace the network tone with the external hold
music.

Connecting a general bell

The MC 6501L/R offers a reduced night service relay
(R3) enabling a telephone or any other connected ringing
device to act as a general bell. Using this device and
according to the type of use, (call distribution), an
incoming or unanswered call will switch the R3 relay on
OCT3B. A signal, including a 48V DC component and a
80V AC component, at 50Hz is delivered.

Two types of bell can be connected to the PBX:

alternative (1000 Ohms, 1µfarad condensed, 160V) or
electronic.

Alternative 1000 Ohms bells use the power delivered by

the signal produced by the PBX. The capacity, connected
in series with the bell, is used to isolate the DC
component ring. The capacity must have a minimum
value of 1 micro farad to provide a maximum impedance
of 300 Ohms.

Connect the general bell on connection points 5 and 13 of

the J9 connector on OCT3B. Use a single-pair cable, as
shown below.

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119

Installing a new
MC 6501L/R
The general bell does not require any programming. It is
taken into account once the installation is powered on. It
has its own directory number, 78. Do not change this
number.

If the output power is not sufficient, for example if

several bells are required, you may need to use a bell
control interface box to which the PBX general bell
signal is connected. This box is supplied with power
from the sector and provides the necessary power in this
case.

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120 Connecting various equipment

There are also electronic rings available with their own

power supply. These provide more power than an AC
1000 Ohms ring.

Connecting an alarm device

Relay control R2

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121

Wiring DECT basestations 

CAUTION
It is imperative that you comply with the polarities of the

Installing a new
clock and the emission/reception pairs.

MC 6501L/R
Basestations are positioned and grouped into cells that
provide continuous telephone service in the specified
coverage area of the business premises.

A DECT basestation is connected to an LS1 or LD4 card

using a 3 pair cable (emission, reception and
synchronisation) terminate by a RJ45 S-loop socket. The
PBX ISDN/S0 reference point supply power to
basestations.

Note: If a DECT basestation and an S0 terminal are

wired on the same card, you must provide 40V
power (switch settings of the ISDN card).

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122 Connecting various equipment

✩ For more Note: Where all basestations are connected to LD4

information, card, the third pair need not be connected as the
please see the M bit of the frame manages the synchronization.
“Integrated
DECT Service”
installation Each synchronization pair of the main basestation can
manual. supply up to 4 additional basestations.

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123

Power-on preparation 
Grounding the PBX
The installation must be properly grounded to ensure

Installing a new
safety of personnel, protection from lightening or power
transients, and to avoid to service disruptions.

MC 6501L/R
To earth the MC 6501L/R:

• plug the power cord to the ADS power supply unit

and the other end to a grounded outlet.

When you install the power cord, leave the

PBX power supply off
Always disconnect central office trunk lines
before disconnecting the AC power plug.
Never connect the central office and station line
connectors until you have connected the power
plug.

• Bring together and connect the bonding strap

(screen) of all the distribution cables to the earth
terminal of the installation’s general distribution
frame.

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124 Power-on preparation

Replacing the cabinet cover(s)

Fire and electrical shock

Before you replace the cabinet cover(s), make
sure there are no screws, tools or any metallic
items inside the racks.

When all the required circuit cards have been installed

and the MDF cabling is complete, replace the cabinet
cover(s).

Connecting external back-up batteries

Each MC 6501L cabinet must be backed up by a
customer-supplied external 48 V battery.

The MC 6501R is delivered with an integrated battery,

installed in the cabinet (rack 1).

When installing or removing batteries, the installer must

carry out the following steps exactly.

To mount an external battery

1 Connect the battery cable to the battery.

2 Mount the battery into the appointed position

of the battery module.
3 Connect the battery cable to the ADS200
power supply unit.

Note: Comply with the + and - polarities.

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125

To remove an external battery 

1 Push the red interrupter switch on the left of
the ADS200 power supply unit.
2 Disconnect the battery cable from the

Installing a new
ADS200.

MC 6501L/R
3 Remove the battery from the battery module.

Note: Preventative maintenance as

outlined in the battery
manufacturer’s installation guide
must be carried out on a regular
basis and the results logged.
To connect the integrated battery
Connect the battery cable to the connection outlet
provided. This is on the side of the power supply unit,
outside the cabinet.

To remove an integrated battery

1 Turn the battery off

Push the red interrupter switch on the left of
the power supply unit.
2 Disconnect the battery cable from the power
supply unit.
3 Remove the cabinet cover.

4 Remove the battery from the battery module

(rack 1).

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126 Power-on preparation

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127

Initialising the system 

Installing a new
At the time of initial installation, after the PBX has been
installed and wired, the system must be initialised before

MC 6501L/R
you begin programming.

After a “total” reset, the resident system program ✩ See the

prompts the system to configure itself automatically to Programming
the default settings, wherever the line/trunk cards are Record for the
default settings.
installed.

To commission a new installation:

• configure the programming console

• power on the PBX

• carry out a “total” reset

• get to know the pre-configuration.

Note: The programming console should be switched on

and configured before you begin initialisation.

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128 Programming console configuration

Programming console configuration

To configure the console to link with the system, you
need an asynchronous communication package to
emulate the VT 100. Many software packages are
available. The instructions given here are for
HyperTerminal in Windows 95.

For a PC running Windows 95:

1 Go to Accessories > HyperTerminal. The

HyperTerminal icon appears.
2 Open the HyperTerminal.

3 Enter a name for the connection, and select

an icon. Click OK.
4 On the line Connection, select COM 1 or
COM 2, based on the communication port
used. Set the transmission parameters as
follows:

Transmission speed 9600

Data bits 8
Parity None
Stop bits 1
Flow control Xon/Xoff

5 Click OK.

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129

Initial start-up 
Powering on the system

Risk of fire and electrical shock

Installing a new
To avoid the hazard of electrical shock to

MC 6501L/R
personnel, the system must be connected to an
outlet with a third-wire ground. It is mandatory
that connection to an earthed outlet is performed
first and removed last when the PBX door is
removed.

Before powering on the system, make sure air can flow

freely around the unit and that nothing is covering the top
of the cabinet or blocking the area around it. The gap
between the PBX and the wall must be left completely
clear.

On/Off switch
48V disrupter
battery switch On

fuses location

line power plug

48V disrupter
battery switch Off

battery connector

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130 Initial start-up

To power on the MC 6501R

1 Switch on the black button on the left-hand

side panel of the cabinet. Yellow and green
lamps on the power supply unit will begin to
flash.
2 Push the green disrupter button on the
left-hand side panel of the cabinet to put the
external battery into service.

To power on the MC 6501L

1 If an extension cabinet is installed, switch on

the black button on the left-hand side panel
of the extension cabinet. Yellow and green
lamps on the ADS 300 will begin to flash.

MDF main cabinet extension cabinet

3 2

4 1

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131

2 Push the green disrupter button on the

left-hand side panel of the cabinet to put the

external battery into service.
3 Switch on the black button on the left-hand
side of the main cabinet. You will see yellow

Installing a new
and green lamps on the ADS 300 begin to

MC 6501L/R
flash.
4 Push the green disrupter button on the
left-hand side panel of the cabinet to put the
external battery into service.

The system starts running tests and the results are

displayed. Wait until the main menu appears on screen.
Before you start programming the PBX, perform a
“total” reset.

Performing a “Total” reset

“Total” reset erases programming

“Total” reset erases any existing programmed
data, and the system configures itself
automatically to the default settings.
A “total” reset should only be performed when
instructed, for example if installing new
software.

You must carry out a “total” reset of the system when you
turn on the system for the first time.

Note: To carry out a “total” reset, you need the

“installer” password.

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132 Initial start-up

To perform a “total” reset on the MC 6501L/R:

1 Go to menu 5.1.3 (Restart requested). The

screen RESTART REQUESTED appears.
2 On the line RESTART TYPE, select
STANDARD. Press Enter.

3 On the line CONFIRMATION, select YES and

press Enter.
4 When the screen begins to display the start
up tests, type “CO” to change over to manual
control.
5 After several tests are displayed, the line
PASSWORD appears. Type the default
password TOTAL and press Enter.

Note: if there is no prompt for the

password, repeat the Total reset.

Wait while the MC 6501L/R runs the test series,

recognises the installed cards and configures itself
automatically.

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133

This will take a few minutes. When the main menu

appears on screen, the initial start-up will have been

completed successfully.

The system performs an additional reset

Installing a new
If the capacity of the line circuit cards installed

MC 6501L/R
exceeds 60 terminals, the system changes the
length of the internal number (DN)
automatically from two to three digits and
restarts to let the change of office data take
effect.
You must wait during a system start-up before
the main menu is displayed. During the system
restart, no action is required.

The system initialisation is a success and is operating

normally when the telephone displays read

Monday 01 January 12:00 am.

The equipment is now in service using the default

configuration data.

Make and answer an internal call to test the telephones

are working. If you are using ISDN:BRI trunks, make an
external call, for example to the speaking clock to
confirm outgoing calls.

If you are using ISDN:PRI or PSTN trunks,

additional programming is required for putting
lines in service and for trunk call routing.

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134 Initial start-up

If any of these characteristics are not evident, for

example there is no display on the telephones or you are
unable to make a call on ISDN:BRI, redo a “total” reset.

Your system is now in service with default settings, for

example the default extension numbers begin with 20 if
in 2-digit configuration and 200 if in 3-digit
configuration.

Checking the system version of the

software
System version tells you the version number of the
System Processor (SP) software and the Application
(AP) software both residing in the CPU board.

If you need to call the Technical Assistance Support

(TAS), you will be asked to provide your release version,
and some general information about your system.

Note: the identification codes should be entered in the

Programming Record for future reference.

Programming steps

1 Go to menu 5.4.1 (Software Identification).

The screen SOFTWARE IDENTIFICATION
appears.
2 The display shows several lines. Check the
details for the lines SYSTEM PROM (SP) and
PROM. APPLIC. (AP) to ensure they are the
same as in the Programming Record.

Contact your distributor if these details do not coincide.

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135

Viewing the system ID 

The system ID is labelled on the left hand side of the
main cabinet and on the CPU card. Record the system ID
code in the Programming Record. You will need the code
to restore an upgraded system after a system start-up.

Installing a new
MC 6501L/R
RC1426A D981000016
MC 6501L/R
0188 230V 50/60 Hz 1A
0165 MADE IN FRANCE

ID N˚ 01010100006598

RC14
26A
018 D981
0168 0000
ID 5 65016
N˚
01010 230V 1L
10000
6598 MAD 50/6
E IN 0 Hz
FRAN
CE

The system ID can be viewed at any time during a

programming session.

Programming steps

1 Go to menu 3.7.1 (Unlocking advanced

functions). The screen UNLOCKING ADV
FUNCTIONS appears.

2 Press Enter. The screen <FUNCTION NAME>

UNLOCKING appears.

The line ID NUMBER displays the system ID. Record the

system ID code in the Programming Record.
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136 Initial start-up

Check the status of trunk lines

Description
You must check the status of the equipped external lines
to ensure they are available. You may check this based on
a status and/or a specified trunk group.

Menu Notes

4.6.2 The display shows:

STATUS OF SEARCH STATUS: you can define a
OUTSIDE LINES search based on one of the following
possible line conditions:
Free, Busy, Incorrect call, Incoming free;
Out-of service, Block; Alarm; Block free; Auto
re-call free; Att. being serviced.
If you do not specify a status, the system will
check all the lines, regardless of their status.
TRUNK GROUP: you can define a search
based on a specified trunk group. If you do
not specify a trunk group name, the system
will display all the lines, regardless of the
trunk group to which they belong.

DISPLAY THE You will see the results of the search in the
STATUS OF form of a table. The table shows:
OUTSIDE LINES ACCESS LOC: (card, equipment, access
number, trunk group and reception service).
The access number is used for programming
the keys of digital telephones to monitor
outside lines.
TRUNK GROUP: shows the name of the
trunk group linked with the line
STATUS: shows the status of the line.
IT PH: indicates the IT PH associated with
the line.

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137

Programming steps 
1 Go to menu 4.6.2 (Status of outside lines).
The system displays the SELECT
EXCEPTIONAL STATUS screen.

Installing a new
2 Select a status on the SEARCH STATUS line, if
applicable.

MC 6501L/R
3 Select a trunk group on the trunk group line,
if applicable. Press Enter. The system
displays the query screen.

Display telephone users

Description
At this stage you can view the pre-configured users:
Menu Notes

1.6.1 This option displays:

DISPLAY BY LOCAT: indicates the physical location number of the
LOCATION extension.
TYPE: the type of extension
NUM: user directory number (DN)
DID: the direct inward dialling number for the extension
SUBSC. NAME: the user name
To access this screen on the INITIAL PHYSICAL
LOCATION line, enter a location number.

1.6.2 This option displays:

DISPLAY BY NUM: the user directory number (DN)
LOCAL LOCAT: the physical location number of the extension
EXTENSION DID: the direct inward dialling number for the
NUMBER extension
NAME: the user name
TYPE: the type of extension connected.
To access this screen on the INITIAL DIRECTORY
line, enter an extension number.

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138 Initial start-up

Menu Notes

3. This option displays:

DISPLAY BY DID DID: the direct inward dialling number for
DIRECTORY the extension
NUM: the directory number (DN) of the
extension.
LOCAT: the actual location of the
extension in the PBX.
TYPE: the type of DID number
PLAN: THE DID plan number (there is no
PLAN specified in the default configuration).
To access this screen on the INITIAL
DIRECTORY line, enter a directory number.

4. This option displays:

DISPLAY BY NAME: the user name
NAME NUM: the directory number (DN) of the
extension
DID: the direct inward dialling number for
the extension
To access this screen, on the line FROM
THE NAME BEGINNING WITH, enter the
first three letters of the extension you want.
The name is displayed, followed by the
names of other extensions in alphabetical
order.

5. This option displays:

DISPLAY NUM: THE directory number (DN) of the
DIGITAL SETS extension
LOCAT: the location of the extension in the
PBX
MODEL: the type of extension, including OP
for operator consoles
M is for the direct incoming dial number
R is for answering machine
L is for card reader
N is for hands free

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139

Programming steps

1 Go to menu 1.1.6 (Extensions Directory).


The screen EXTENSIONS DIRECTORY
appears.
2 Enter the menu number that you need (as

Installing a new
shown in the table above). Press Enter. The

MC 6501L/R
screen of your selection appears.

Check the status of telephone users

Description
This section allows you to check the status of telephone
users as a result of the default configuration:

Menu Notes

4.6.1 The display shows:

STATUS OF SEARCH STATUS: you can define a query based on one of the
TELEPHONE following options:
USERS FREE: a list of all the extensions in service that are free
BUSY STABLE: a list of all the extensions in service that are
busy.
BUSY/UNSTABLE: a list of all the extensions currently being
connected.
FALSE CALL: a list of all the analogue extensions that have
been left off hook and/or the digital extensions that have not been
connected.
OUT-OF-SERVICE: a list of all the sets placed out of service by
the UI.
If you select ANY, the system displays all the extensions, regardless
of their status.

DISPLAY The result of your query is presented as follows:

THE STATUS LOCAT: the physical location of the extension in the PBX.
OF TYPE: type of telephone
TELEPHONE NUM: extension number
USERS STATUS: status of the extension from among the 5 possible
options.

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140 Initial start-up

Programming steps

1 Go the menu 4.6.1 (Status of telephone

users). The system displays the SELECT
EXCEPTIONAL STATUS screen.

2 Select a status on the SEARCH STATUS line

(see table above). Press Enter. The system
displays the query screen.

Display the extensions directory

Description
You can view the extensions directory, menu 1.1.6 gives
you 7 possible selections:

Menu Notes

2. This selection displays:

DISPLAY NUM: the user’s directory number.
BY LOCAL LOCAT: the physical location number of the
EXTENSION extension
DIRECTORY DID: the direct inward dialling number for the
extension
NAME: the user name
TYPE: the type of extension connected.
To access this screen on the INITIAL
DIRECTORY line, enter an extension number.

3. This selection displays:

DISPLAY DID: the direct inward dialling number for the
BY DID extension
DIRECTORY NUM: the directory number (DN) of the extension
LOCAT: the location of the extension in the PBX.
TYPE: the type of DID number
PLAN: the DID plan number (the default
configuration does not specify any PLAN).
To access this screen on the INITIAL
DIRECTORY line, enter a directory number.

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141

Programming for a new 

installation

Installing a new
MC 6501L/R
The MC 6501L/R requires only a few programming
changes to operate a normal service. By following the
instructions in this chapter, you can complete the default
settings.

Note: The displays given here may differ slightly

depending on factory settings and local
requirements.

Programming affects system operation

The installer password is required to program the
PBX.
Changing the dialling plan
Changing the local dialling plan (length and/or
sequence of the local dialling), when required, is
the first change to carry out when programming
a recently-installed PBX.

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142 Procedure for programming site data

Procedure for programming site data

The table below summarises the initial programming to
be carried out on site. However, this table must not be
seen as a complete set of technical instructions.

Programming site data

1. System parameters

➤ Set date and time Shows the current date and

time.
➤ Re-start system Re-start the system to save
programming data.
➤ Identify the site Give the site a name to identify it
by if you are accessing the
system for maintenance through
a remote connection.
➤ Define the CAL1 calendar Define the ranges for switching
between day and night
operation, and vice versa for the
CAL1 calendar.
2. Telephone users
➤ Define users Define the user characteristics,
directory number, name, DID
number, features, etc.
➤ Create ISDN users Declare ISDN users, validate
the type of S0 bus, configure the
ISDN users and program the
terminals.
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143

Programming site data 

➤ Declare OPs Create an operator console:
designate the operator terminal,
activate the operator terminal,
define the operating modes for

Installing a new
the OP terminals.

MC 6501L/R
➤ Declare the night service Define the night service
extension number extension number
3. Incoming calls service

➤ Assign general DID numbers Assign the DID number to the

ACC1 call distribution service
4. ISDN services

➤ Define the ISDN installation Define the IDSN installation

identification (IID) identification number.
➤ Configure automatic redial Define the prefixes for an
automatic redial if a call is not
answered.
5. Keyed functions

➤ Unlocking a keyed function Enter the code to unlock ADV

functions
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144 System settings

System settings

Changing system time and date

Description
The system uses a default time and date when initialised.
It is essential to have the correct time and date for
recording and metering and so on. It is possible to set up
a change between daylight saving time and standard time
in advance. Your system will be updated automatically at
the next time change.

The date and time appears on digital sets with displays.

Entries

• current time in the format HH MN SS for hours /

minutes / seconds

• current date in the format DD MM YYYY for day /

month / year
Programming steps

1 Go to menu 3.1 (Date and time

management). The screen DATE AND TIME
MANAGEMENT appears.

2 Change the system time.

On the line TIME, enter the current time as
shown: HH MN SS for hours / minutes /
seconds.
3 Change the system date.
On the line DATE, enter the current date as
shown: DD MM YYYY for day / month / year.
Press Enter.
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145

4 Program the date for a time change.

On the line NEXT PROGRAMMED TIME

CHANGE, select YES. Press Enter. New lines
appear.
5 On line ON, enter the date for the change as

Installing a new
shown: DD MM for day / month.

MC 6501L/R
6 On line AT, enter the time for the change as
shown: HH MN for hours / minutes.
7 On line IT WILL BE, enter the new time as
shown: HH MN for hours / minutes. Press
Enter.

Verification and testing

Lift the receiver and then hang up a digital telephone
equipped with a display or, unplug and re-connect the
telephone cable. The date and time you have set will
appear on the telephone display.

Naming the local site

Description
A unique name for the site is necessary to identify it by if
you are accessing the system for maintenance through a
remote connection.

This name will always be visible on the dividing line

between the menu options and the commands if you have
completed this task successfully.

Entries

• up to 24 ASCII characters

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146 System settings

Programming steps

1 Go to menu 3.6 (Other parameters). The

screen OTHER PARAMETERS appears.
2 On the line INSTALL. NAME, type in a unique
name for the local site (up to 24 ASCII
characters). Press Enter.

Resetting the system / saving

programming
Description
Resetting the system to save the current programmed
settings. Do a system reset only when advised or if the
PBX is not functioning correctly for any reason.

Entries

• the restart type is STANDARD

Considerations

• the system reset begins immediately and takes only

a few seconds

• the reset process cannot be interrupted and as the

system disconnects all active calls, you must wait
until the reset is complete before you can do any
more programming
Programming steps

1 Go to menu 5.1.3 (Restart request). The

screen RESTART REQUEST appears.

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147

2 On the line RESTART TYPE, select STANDARD

and press Enter. A new line appears.

3 On the line CONFIRMATION, select YES. Press
Enter.

Installing a new
Wait until the MC 6501L/R has completed its restart

MC 6501L/R
procedure and the main menu has appeared before
continuing programming.

Defining default calendar (schedule) CAL.1

Description
CAL.1 is the default calendar used for day/night
categories and for routing inward calls (default
call-distribution service, ACC.0)

The categories specify the day/night barring levels

assigned to calls by users (for example: restricted access
to the public network access.)

When you initialise the system, the times for each day of
the week (Monday to Sunday) for CAL.1 are not defined,
nor are the options for switching between day and night
service associated with each day.

Note: Time settings must be coherent. They must cover

the entire week without a break.

Entries

• switchover directions can be NIGHT -> DAY,

DAY -> NIGHT or UNUSED

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148 System settings

• if the operator console is deactivated during the

day, enter DAY -> NIGHT and time, then NIGHT
-> DAY and time for the deactivation period

• select UNUSED for any switchover directions that

are not required

• enter the time in 24-hour format: HH:MN

Considerations

• to check the settings, you can view calendars in

menu 1.6.4 DISPLAY CALENDARS.

Programming steps

1 Go to menu 1.6.2 (Range definition for one

day). The screen CALENDAR RANGES
DEFINITION appears.

2 On the line CALENDAR NAME, select CAL 1.

3 On the line DAY, select the day you want to

define (Monday to Sunday). Press Enter. The
screen DEFINITION OF RANGE <CAL.1>
<DAY> appears.

4 On the line SWITCHOVER DIRECTION, select

NIGHT ->DAY, DAY -> NIGHT or UNUSED.

5 On the line DESIRED TIME, enter the

switchover time in 24-hour format.
6 Repeat steps 4 and 5 until all 4 switchovers
have been defined.

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149

7 If you are defining different times for each

day, press Esc N to go to the next day.
✩ If you have the
same settings for

each day, press
8 Repeat steps 4 to 7 until each day of the Esc R then Y (yes)
calendar has been defined. on each line to
repeat the settings
for the rest of the

Installing a new
Note: If there is no business on some days week

MC 6501L/R
of the week, leave the default
setting UNUSED for those days.
You can view calendars in menu 1.6.4 (Display
calendars). The table has five columns: NAME, STATUS,
MODE, BARNG, C.DISTR. NAME is the calendar name,
STATUS is the day or night service, MODE is automatic or
manual, BARRING is if the calendar is used for barring
access or not, CALL DISTRIBUTION is if the calendar is
used within the call distribution services.

Automatic mode means that the status is the one resulting

from the ranges you defined during programming.
Advance mode means that the calendar status was
imposed from an authorised extension: OP, or
maintenance post.

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150 Subscribers (users)

Subscribers (users)
Three types of subscriber equipment can be connected to
the MC 6501L/R:

Type Description

Digital digital telephones

Analogue analogue telephones, external music

source, answering machine, voice
server, external modem, fax machine,
external ringer, door latch

ISDN ISDN telephones, ISDN adapter

Each set requires characteristics to give it a unique

identity. The set is assigned a group of characteristics
either by a feature class or by defining individual
characteristics.

There are several ways to define extension

characteristics:

• individually, using menu 1.1.1 (Extension

characteristics)

• by copying the characteristics from one extension

to one or more extensions using menu 1.1.2 (Copy
of extension characteristics)

• using feature classes to assign a group of features

to one or more extensions

¾ See part 2 for This section give details for assigning individual
Feature classes characteristics and copying to other extensions.

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151

Understanding extension characteristics 

Here is a table of the characteristics and explanations in
menu 1.1.1 (Extension characteristics). The shaded cells
indicate the line is not valid for all types of sets or users.

Installing a new
Line Explanation

MC 6501L/R
SUBSCRIBER You do not need to take the extension out of
STATUS service except when instructed to do so in the
procedure. Select IN SERVICE or, when
appropriate, OUT OF SERV. Press Enter to
validate your choice.

EXTENSION The 2- to 6-digit extension number appears.

NUMBER You can change the DN of the extension in this
field.
Note: The user must be put out of service to
change the DN.

DID DIRECTORY DID for the extension are entered here.

NUMBER PLAN 1
EXTENSION NAME The user name can have up to 12 characters
and contains any combination of letters and
numbers.

TYPE OF BUS This field appears only for ISDN sets. The
default settings will show the correct value for
this field: SHORT or LONG.

CALL WITHOUT This field appears only for ISDN sets. If the set
ALLOWED IDENT. is not to show the source identification, select
NO. If the set is to show identification, select
YES.
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152 Subscribers (users)

Line Explanation

SIGNALLING This field appears only for ISDN sets. There

are three options: BY DEFAULT, NUMERIS
VN4, ETSI. Leave the field on BY DEFAULT.
B1 CHANNEL This field appears only for ISDN sets. There
FORCED are two options: YES or NO. Leave the default
setting of NO.

COMPANY This field appears only when multicompany

operation has been enabled. Select the
appropriate company name.
Note: to change the company name, the user
must first be put out of service.

DEPARTMENT This field appears only when multicompany

operation has been enabled. Select the
appropriate department name.
Note: to change the department name, the
user must first be put out of service.

MULTI-USERS This field only appears when the telephone is a

digital set. The display shows DEFINED 0,
AUTHORISED 0. This field is used when
many people use the same phone and
external calls may be made. Each user can be
billed separately.

PASSWORD STATUS This field only appears if the user has recorded
a password for the extension. The line will
show RECORDED. Select ERASED to delete
the password and allow the user to enter a
new password.
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153

Line Explanation 
TELEPHONE SET If the extension is digital, the model number
MODEL will appear and this field cannot be modified.
If the telephone is analogue, the set model
must be indicated to the PBX. Select one of

Installing a new
the following:
KEYPAD for a set with MF dialling

MC 6501L/R
DIAL + F for a set with DEC dialling with
earth button
ROTARY for a set with DEC dialling
ANSW. MACH. for a set with an answering
device or message service
DTMF V MAIL for a voice mail system using
DTMF code (Q23)
Press Enter to validate your choice.

DAY CATEGORY Select the day category to be assigned to the

user. The restrictions associated with each
category can be displayed in menu 1.1.7.2
(Category Definition).

NIGHT CATEGORY Select the night category to assign to the user.

The change from day to night is defined in the
restrictions calendar in menu 1.6.3 (Barrings
calendar) or by a maintenance set.

DAY This field is used to assign a barred number

DISCRIMINATION list or range of lists. Select the barred number
RANGE range. If the extension has no dialling
restrictions, leave the field blank.

NIGHT This field is used to assign a barred number

DISCRIMINATION list or range of lists. Select the barred number
RANGE range. If the extension has no dialling
restrictions, leave the field blank.
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154 Subscribers (users)

Line Explanation

HOT LINE TYPE This field is not available for an ISDN

extension. If the extension is not a hotline do
not enter data in this field. If the extension is a
hotline, select IMMEDIATE or DELAYED.
IMMEDIATE allows the number to be dialled
as soon as the receiver is lifted and DELAYED
allows the number to be dialled 5 seconds
after the receiver is lifted. This value is
modified in menu 1.7.1 (Time-out
management).

DAY NUMBER This number is used when the system is in day

(HOT LINE) mode. If the extension is not a hot line do not
enter data in this field. If the extension is a hot
line, type the hot line number (an internal or
external extension with a maximum of 17 digits
including the direction access prefix) for this
extension.

NIGHT NUMBER This number is used when the system is in

(HOT LINE) night mode. If the extension is not a hot line do
not enter data in this field. When appropriate,
type the hot line number (an internal or
external extension with a maximum of 17 digits
including the direction access prefix) for this
extension.
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155

Line Explanation 
INTERCOM TYPE Select one of the following:
Note: The Monitored MONITORED AND MONITOR allows the user
and Monitor setting to program a supervision key indicating the
uses processor time, status of other sets in the same intercom

Installing a new
so should be used only group. The user’s phone can be monitored in
for Filtering the same way by other users.

MC 6501L/R
MONITOR allows the user to program a
supervision key indicating the status of other
sets in the same intercom group. The user’s
phone will not be monitored in the same way.
NO MONITORING restricts a user from
programming a supervision key and the user’s
phone cannot be monitored by a supervision
key on another set.
Note: An extension can belong to two
intercom groups at the same time. All
extensions of the same company have the
same intercom group, and all changes to a
monitored extension are indicated to the whole
group.

INTERCOM 1 GROUP This line is only valid if multisite has been

NUMBER OR enabled. Assign the user to one of two
INTERCOM 2 GROUP intercom groups.
NUMBER
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156 Subscribers (users)

Line Explanation

PICK-UP GROUP This line does not appear if the user belongs to
NUMBER an intercom group because the system
assigns a pick-up group number automatically
for all users in the same intercom group (all
are set to Monitored and Monitor).
Note: A pick-up group can only contain
extensions in the same company/department
when the system parameter
AUTHORISATION TO LOCAL COM.
BETWEEN COMPANIES is set to NO. Enter
the appropriate pick-up group number.

PAGING GROUP Assign the user to one of two paging groups.

NUMBER 1 The recipient controls the page at their set in
one of three ways:
Caller and called party have the same paging
group number: Pager will ring if the called
extension is forwarded.
Caller paging number group is 255: Pager will
ring if the called extension is forwarded.
Caller and called party have different paging
group numbers and caller end paging number
groups is not 255: Pager will not ring even if
the set is forwarded.
Type the number of the end paging number
group.

PAGING GROUP See the line above, Paging group number 1.

NUMBER 2
ACCESS TO TL Areas are designated A to H by the installer
ROUTES AREA A and a data entry field will appear for each area
defined. Press the spacebar to choose YES or
NO for each TL route area that appears. See
Categories for more information.
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157

Line Explanation 
ACCESS TO PAGING Choosing YES allows the user access to three
types of paging (modify menus 1.2.2 Direction
names and 1.3.1.4 Access to directions).

PRIVILEGED SET Choosing YES allows the user to have priority

Installing a new
in the queue when calling the operator.

MC 6501L/R
PICK-UP Choosing YES allows the user to intercept all
PROTECTION calls to other sets, including sets with pick-up
OVERRIDE protection.

LOCKING ALLOWED This field is not available for ISDN sets.

Choosing YES allows the user to lock the
extension so that a password is required to
program the set or use personal abbreviated
numbers.

UNLOCKING Choosing YES allows the user to unlock the

ALLOWED extension using a password.

PICK-UP Choosing YES allows the user to prevent

PROTECTION pick-up of calls except by sets that have
pick-up protection override set to Yes.

NIGHT CATEGORY Choosing YES allows the user to access the

OVERRIDE day service, enabling outgoing calls using a
password.

CALL FORWARDING Choosing YES prevents calls from being

PROTECTION forwarded to the extension.

DYNAMIC Choosing YES allows the user to protect a

PROTECTION communication in progress from intrusion and
call waiting tones. This feature is useful for
modem communications.
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158 Subscribers (users)

Line Explanation

DO NOT DISTURB Choosing YES allows the user to use the Do

ALLOWED Not Disturb feature. Internal callers hear a
busy signal and external callers are routed to
the operator.

INTRUSION Choosing YES allows the user to interrupt an

ALLOWED extension that is making a call, as long as the
extension does not have another call waiting.

INTRUSION Choosing NO allows the user to prevent calls

ACCEPTED being interrupted.

MASTER OF This field is not available for analogue

CONFERENCE telephones. Choosing YES allows the user to
initiate a conference.

CONFERENCE This line appears only when the extension is

MONITORED BY THE an analogue set. Choosing YES allows the
MASTER user to initiate a conference.

PRE-EMPTIVE When the user has enabled call forward and

REROUTING TO both the user and the forwarded set have a
VOICE MAIL mailbox, choosing YES will allow messages to
be left in the user’s mailbox.

DISA FUNCTION Choosing YES allows the user to dial into the
USING system remotely and use some of the
MC 6501L/R features. See part 2 for more
information on DISA.
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159

Line Explanation 
CALL WAITING This field indicates how a call is processed
when the called extension is in use. Select one
of the following:
ACCEPT AND BIP: normal operation: call is

Installing a new
placed on hold and the user is notified by an
audible beep

MC 6501L/R
FORWARD -> ON OP: waiting calls are
forwarded to the operator console
REFUSED: caller hears a busy signal
RETURN TO OP ON This field is used to specify time-out to return
SPECIAL to the operator console when an incoming call
TIME-OUT is not answered. The value is defined in the
menu 1.7.1 (Time-out Management).

EXTERNAL Choosing YES allows internal calls to be

FORWARDING transferred to an external number. Forwarding
ALLOWED from an external call to an external number is
subject to other rights. Go to menu 1.7.2
(Miscellaneous parameters) to set the ALLOW
TRANSFER TK TO TK parameter to YES
when tie-lines or trunks have been set up. Go
to menu 1.2.9 (Transfer authorisation) to
define trunk-to-trunk transfers.

SECRETARY Choosing YES allows the user to do the

FORWARDING following actions:
ALLOWED - activate a forwarding function for another set
(all incoming calls to the other set are routed to
this extension)
- override forwarding
- override DND
- forward a group of phones
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160 Subscribers (users)

Line Explanation

SPEAKER PAGING Choosing YES allows the user to make a

speaker call to sets belonging to the same
paging group (lists defined in menu 1.1.9.1)
and are equipped with a loudspeaker.

NETWORK SHIFT Choosing YES allows the user to select a line

ALLOWED in an overflow trunk group of a different type,
when the direct routing trunk group is
saturated.

NETWORK Choosing YES allows the user to select a line

REROUTING in an overflow trunk group of the same type,
ALLOWED when the direct routing trunk group is
saturated.

ID SENT TO Choosing YES allows the user’s name and

PUBLIC NETWORK number to appear at the called telephone
when an external call is made. Choosing NO
means that only the PBX (company) name will
appear at the called telephone.

ID SENT TO Choosing YES allows the user’s name and

PRIVATE NETWORK number to appear at the called telephone
when a network call is made. Choosing NO
means that only the PBX (company) name will
appear at the called telephone.

ID SENT CAN BE Choosing YES allows the user to program a

MODIFY FOR EACH key that controls whether to allow their name
CALL and number to appear at the called telephone.

PRIORITY SET Choosing YES allows the user to use a

reserved line. The number and type of
reserved lines was set by the installer.

PERMANENT Choosing YES allows the user to forward calls

FORWARDING to an external extension.
ALLOWED
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161

Line Explanation 
FORWARDING ON Choosing YES allows the user to forward calls
BUSY ALLOWED when the line is busy.

FORWARDING ON NO Choosing YES allows the user to forward calls

that are not answered.

Installing a new
RESPONSE
ALLOWED

MC 6501L/R
RECORDED CALL Choosing YES allows the user to register the
ALLOWED last number dialled using either a feature code
or a redial key.

AUTOMATIC Choosing YES allows the user to use the

CALLBACK automatic callback feature by pressing either a
ALLOWED feature code or a callback key.

APPOINTMENT Choosing YES allows the user to use the

REMINDER Alarm/Wake-up feature. Each user has a
ALLOWED maximum of four appointment reminders
available. The hotel room set type has one
reminder available.

COMMON ABBREV. Choosing YES allows the user to use common

NUMBERS ALLOWED speed dial numbers.

PERSONAL Choosing YES allows the user to define and

ABBREV. NUMBERS use personal speed dial numbers.
ALLOWED
PERSONAL CALL Choosing YES allows the user to make
ALLOWED personal calls.

TRANSFER BEFORE Choosing YES allows the user to transfer calls

ANSWER ALLOWED before the called party answers.

HUNTING GROUP Choosing YES allows the user to belong to a

SETTING ALLOWED hunt group.

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162 Subscribers (users)

Line Explanation

BOSS LINE NUMBER To reserve a trunk line for that set, enter the
trunk line access number found in menu 1.2.5
(Line display). This line must be defined for the
outgoing end of a special trunk group and
routed to the extension at the incoming end.
This type of route is used only with analogue
trunk lines.

PREDEFINED Enter the number (internal or external) of the

FORWARD # extension to which calls will be forwarded. You
can use a maximum of 17 digits including a
direction access prefix.
Note: forwarding to an external number can
only be done if PERMANENT FORWARDING
ALLOWED is set to Yes.
RING. TIME FOR Choose one of four delayed forwarding ring
DELAYED FRWARD times. Default times are all 15 seconds. Use
menu 1.7.1 (Time-Out Management) to
change the settings in RINGING TIMER
BEFORE DELAYED FORWARDING field.
Press the spacebar to choose:
STANDARD:15 SEC
SPECIFIC: 15 SEC
SPECIFIC 2: 15 SEC
SPECIFIC 3: 15 SEC
HOTEL ROOM SET The guest room telephone is used with the
TYPE Hotel/Motel configuration. Choosing YES
allows the user to make personal calls without
using a password, authorises the messaging
feature, and limits the number of appointment
reminders to one.

EXT. LAST This field is not available for analogue sets.

CALLERS This feature can only be activated for an ISDN
CALLBACK network. Choosing YES allows the user to
recall the last caller automatically.
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163

Line Explanation 
MAINTENANCE SET The maintenance set can change the day/night
mode manually, conduct billing supervision of
analogue sets and authorize initiation of
manual TL tests and supervision of alarms.

Installing a new
The features are programmed on
programmable keys. If the extension is a

MC 6501L/R
maintenance set, press the spacebar to
display YES. If the extension is not a
maintenance set, do not enter any data in this
field.

SPEECH LANGUAGE This line appears only if a language has been

defined. Select the defined language, for
example ENGLISH or FRANCAIS.

WRITING This line only appears if the set is a digital set.

LANGUAGE Select a language, for example ENGLISH or
FRANCAIS.
USED AS VIRTUAL Select YES if the extension is to be used as a
SET ALLOWED virtual set.

BUSY FOR GROUP This option is used for a multiline telephone

ON 1ST CALL with more than one DN. A multiline telephone
can receive more than one call at a time.
Choosing YES means that if a call is received
while the user is already on a call, the second
caller will hear a busy tone. Choosing NO
means that the user telephone will ring when
the second call arrives and the call will be put
into a queue.

SUBSCRIBER’S Choosing YES will enable release of a billing

SUPERVISION ticket after each call is completed.

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164 Subscribers (users)

Defining extension characteristics

Description
Assign characteristics to an extension. Once defined, the
extension can act as a reference and the characteristics
can be copied to other extensions.

Considerations

• barred numbers lists are created separately in menu

1.3.5

• categories are associated with the calendar

assigned for call barring

• DID numbers are assigned to extensions; check the

Programming Record for the DNs of extensions
being assigned DID numbers

Entries

• check the Programming Record for the rights to be

assigned to each extension

• keyboard shortcuts to move quickly through the

data screens:
Esc M to go to the next page
Esc B to go to the beginning
Esc E to go to the end
Esc R and Y to copy one characteristic to all
extensions

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165

Programming steps 
1 Go to menu 1.1.1 (Extension
characteristics). The screen EXTENSION
NUMBER SELECTION appears.

Installing a new
2 On the line BY ITS EQUIPMENT NUMBER,
enter the location of the equipment number

MC 6501L/R
and press Enter;
or
on the line BY EXTENSION NUMBER, enter the
extension directory number and press Enter.
If you leave the fields blank and press Enter,
the first extension number in the directory
will be selected.
The screen EXTENSION <TYPE OF SET>
<LOCATION> appears.

3 On the line DID DIRECTORY NUMBER PLAN

1, enter the DID number.

4 Move down the data fields and change the

data as required for any of the fields.
5 Press Esc N to go to the next extension, or
press Ctrl+J to go back to select a different
extension number, or press Ctrl+U to return
to the main menu.

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166 Subscribers (users)

Copying extension characteristics

Description
Copy characteristics from one extension to one or more
consecutive extensions.

Considerations

• not all characteristics in menu 1.1.1 (Extension

characteristics) can be copied; individual
characteristics for example, the DN and name will
not be copied
• categories (feature class, day and night categories,
day and night discrimination) will be copied

Programming steps

1 Go to menu 1.1.2 (Copy of extension

characteristics). The screen COPY OF
CHARACTERISTICS appears.

2 On the line REFERENCE EXTENSION

NUMBER, enter the reference extension
number, for example 400.
3 On the line FIRST EXTENSION NUMBER,
enter the extension number of the first
extension number in the sequence, for
example, 401.
4 On the line LAST EXTENSION NUMBER,
enter the extension number of the last
extension in the range, for example, 425.
5 On the line CONFIRMATION, select YES.
When the confirmation reverts to NO, the
extension characteristics will have been
copied to extensions 401 to 425.
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167

Declaring an operator console 

Description
An operator console (ATDC) must be a digital set with
programmable keys, for example a MC520 or 640 set.
One or two operator consoles can be created with the

Installing a new
MC 6501L/R.

MC 6501L/R
Considerations

• you need the PBX location of the extension to be

used as an operator console; go to menu 1.1.6.1
(Display by location) to display the equipment
number

• once an extension has been declared as an operator

console, the extension characteristics can only be
programmed by accessing the extension
characteristics with the equipment number

• check in the Programming Record for the digital

extension number to be used as operator console

Entries
There are two types of console operations: class A or
class B.

• class A has the status of each line showing on a

separate key
• class B monitors all incoming calls on one key and
all internal calls on another key

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168 Subscribers (users)

Programming steps

1 Define the operator console.

Go to menu 1.4.1 (Operator consoles
definition). The screen OPERATOR CONSOLES
DEFINITION appears.

2 On the line OP<X>-RACK BOARD EXT. LINE,

enter the 4-digit equipment number of an
operator console. Press Enter. Two new lines
appear.
3 On the line OPERATION TYPE, select CLASS
A or CLASS B.

4 On the line EXTENSION NUMBER, the

extension number of the digital set assigned
to be the operator console is displayed. Press
Enter.
5 Activate the operator console:

• to activate a Class A console, press the

$&7,9( interactive key, then &21),50
• to activate a Class B operator console,
press the $&7,9$7( $7'& interactive
key, then press &21),50
Verification and testing
Set up a call to the operator console by dialling the CALL
OPERATOR code (0 or 9) to check that it is working
correctly.

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169

Defining operator console characteristics 

Description
The new operator console needs to have special functions
enabled to allow for example, call forwarding.

Installing a new
When the keys have been correctly programmed, the

MC 6501L/R
MC510/520/610 and 640 telephones have the features
of an operator console. The display is the same as for the
user extensions, with the addition of several
operator-specific functions that you can see on the
display. The programmable function keys enabling the
operator to manage calls are automatically configured
when the extension is first installed. During this
installation procedure you can program the use of these
keys based on the operator console class.

Considerations

• the functions enabled will be valid for all operator

consoles; it is not possible to define functions for
individual consoles
• more operator parameters can be modified using ¾ See part 2 System
Table 56 in Miscellaneous parameters parameters for
more information
Programming steps

1 Define operator group characteristics.

Go to menu 1.7.2 (Miscellaneous
parameters). The screen MISCELLANEOUS
PARAMETERS appears.

2 On the line AUTOMATED CALL

DISTRIBUTION, (parameter reserved for
Class B operator terminals), select YES to

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170 Subscribers (users)

route the calls to the least-busy operator.

Validate this routing selection using the
interactive keys on the operator console.
3 On the line ALLOW CONDITIONAL
TRANSFER:

• OP2 Class B: the default setting for this

parameter is NO. The operator console
connection circuit (CCO) is freed when
the call is transferred. If the called party
does not reply, then the operator will see
the call on the ,1&20,1*  key of the
console.
If YES is selected, the connection circuit
remains open until the dialled party answers.
• OP Class A: the default setting for this
parameter is NO. The monitoring LED
and the LR remain lit up until the dialled
party replies. After the programmed
ring-out time has elapsed, the LED will
flash rapidly. If the parameter setting is
YES, the monitoring LED flashes slowly
until the dialled party replies.
4 On the line PROTECTION OVERRIDE RIGHT,
if YES is selected, the operator console can
transfer a call to a user whose CALL
WAITING feature is set to REFUSE.

5 On the line BACK, BEGIN. OF THE NAME

DISPLAY, if YES is selected, when the call
returns to the operator from an extension that
is either free or busy, the 6 first letters of the
user name are displayed on the operator
console.
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171

6 On the line KEY “RELEASE” MAKES

TRANSFER (parameter reserved for Class A 
operator consoles) if YES is selected, by
pressing the )5(( key the operator can
forward a call.
7 On the line CALL CONSULT. BY “R” OR

Installing a new
“COM” (parameter reserved for Class A

MC 6501L/R
operator consoles) if YES is selected, the
operator can press 5 or &20 to enable a
double call.

Declaring the night console

Description
Declare an extension number for calls to be forwarded to
during night or reduced service hours. This extension
number designates the additional night service number
(ANSN) associated with an operator service (OP. SV.).
All calls received will be forwarded to this number if
there are no active operator consoles dealing with the
calls for this OP. SV.

The night service number is the final call-routing level if

calls cannot be routed as dialled.

Considerations

• It is vital to designate a night service number. The

default night service number assigned to the
15 OP. SV. is the DN of the general bell relay.
However, this can be replaced by an extension or a
group, identified by its DN.

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172 Subscribers (users)

• When an extension is declared as the night service

number, it loses some of the regular features and
gains other additional features: call-waiting
management, override call barring, etc.

• To ensure ongoing telephone service during

reduced service hours, you can use HUNT
extension groups. The operating method is the
same as for a normal group. The extensions
included in the night service grouping are
automatically given the features of a night service
extension.
Entries

• check in the Programming Record for the extension

or hunt group DN to be used as night console.

Programming steps

1 Go to menu 1.4.2 (Operator groups

definition). The screen OPERATOR GROUPS
SELECTION appears.

2 On the line BY NAME, select OP1.SV. Press

Enter. The screen DEFINITION OP1.SV
appears.
The extension number of the existing
operator console will be listed on the first
line OPERATOR NUMBER.
3 On the line NIGHT SERVICE EXTENSION
NUMBER, the default extension number of the
general bell relay appears. Replace this
number with the extension number of the
night console.

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173

Verification and testing

Deactivate the operator console and make a call to the

operator. The call should be forwarded to the night
console.

Installing a new
Define the operation of operator console

MC 6501L/R
call forwarding
Description
A declared night service extension loses some normal
features but gains additional ones: management of call
waiting, override call barring, etc. The extension will not
have the right to a DID number. It is also denied all types
of call forwarding, except on the general bell, if this is
authorised as outlined below.

Considerations

• Calls are immediately forwarded to the night

console

• The call is forwarded on the general bell

voluntarily by the night-service extension user.
Cancel the call-forward to re-activate.

• You can only forward a call to the night console if

it is an extension, as opposed to a group or general
bell.
Programming steps

1 Go to menu 1.7.2 (Miscellaneous

parameters). The MISCELLANEOUS
PARAMETERS screen appears. The line
OPERATOR CONSOLE CALL FORWARD

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174 Subscribers (users)

PARAMETERS shows the beginning of the

group of parameters associated with the use
of the night-service number.
2 On the line ALLOW PRE-DETERMINED
CALL-FORWARD, select YES to authorise
pre-determined call forwarding from the
night-service number, when it is active, on
the general bell.
For the calls to be forwarded to the bell, the
DN of the general bell bust be included on
the line PREDETERMINED CALL FORWARD
NO. in the night-service extension
characteristics (menu 1.1.1).
3 On the line AUTHORISE VARIABLE CALL
FORWARD, select YES to allow variable call
forwarding.
4 On the line AUTHORISE CALL PICK UP,
select YES to enable interception of calls to
the night-service extension by entering the
interception code followed by the
night-service extension DN.
5 On the line AUTHORISE RECEIPT OF LOCAL
CALLS, select YES to allow receipt of local
calls.
6 On the line ALLOW OVERFLOW WHEN OP
SATURATED, choosing YES means that
incoming calls go to the overflow switch if
the operator does not reply within the pre-set
“overflow” time.

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175

Define the length of the S0 bus ¾ See part 2 for

Internal dialling

Description
This procedure defines the characteristics of an S0 user
by declaring the access point for the S0 bus. It enables
you to define the type of bus according to the type of

Installing a new
wiring (long or short).

MC 6501L/R
Entries

• The equipment number of the LS1 card, menu 3.2

(Card management)

• The bus directory number (DN). The DN must

comply with the User Dialling Plan.

Programming steps

1 Go to menu 1.1.1 (Extension

characteristics). The system displays the
SELECT A USER screen.

2 On the line BY PHYSICAL LOCATION, enter

the equipment number of the bus. Press
Enter. The system displays the ISDN USER -
PHYSICAL LOCATION OF BUS screen.

3 On the line DN, enter the DN assigned to the

S0 access on which the bus is wired.
4 On the line TYPE OF BUS, SHORT is the
default setting and specifies a short or Y bus.
If the bus is set up as a long bus or a
point-to-point, confirm LONG. In this case,
you must re-commission the equipment S0
in menu 3.2 (Card management).

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176 Subscribers (users)

5 The line ALLOW CALL WITHOUT

IDENTIFIER, only appears in the
characteristics of the first user declared on
the bus. Select YES if the terminal connected
has not inserted its DN in its call package.
Several pieces of equipment of this type can
be connected on this bus, but in this case, it
is the first telephone that has the main
characteristics (call metering)
6 On the line USER STATUS, set the parameter
to IN SERVICE. Press Enter, press Ctrl+J
twice.
7 If the characteristic TYPE OF BUS has been
set to LONG BUS, go to menu 3.2 (Card
management) and set the card to ISDN
OUT-OF-SERVICE and then to IN
SERVICE.

Verification and testing

Check using an ISDN S0 extension:

If the extension display is blank, check that the 40V card

is installed (power supply for the S0 bus).

If the extension display shows LEVEL 1 ERROR, check

the wiring between the S0 bus and the S0 equipment on
the card.

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177

Declaring ISDN users on an S0 bus 

Description
An S0 bus can include a maximum of 8 RJ45 outlets for
4 ISDN S0 terminals. This procedure declares and
configures the characteristics of each ISDN user on the

Installing a new
bus.

MC 6501L/R
Entries

• the DN or equipment number of the S0 bus

reference point

• the directory numbers (DN) for ISDN users

• these DNs must correspond to the dialling plan for

users
Considerations

• you must create the S0 bus. The DN assigned to the

S0 reference point is automatically assigned to the
ISDN user at the head of the bus

• the DNs must correspond to the dialling plan.

• only 2 calls may be made simultaneously on an S0

bus.
Programming steps

1 Go to menu 1.1.5 (Add / delete users). The

system displays the ADD/DELETE USERS
screen.

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178 Subscribers (users)

2 On the line PHYSICAL LOCATION or the line

REFERENCE NUMBER, select the bus by its
equipment number or by its DN. Press Enter.
3 The ISDN S0 screen PHYSICAL LOCATION
OF THE BUS appears. On the first line, you
will see the bus directory number (DN).
When you defined the length of the S0 bus at
menu 1.1.1, you entered this number.
4 On lines number 2, 3, etc., enter a DN for
each ISDN user for this bus (there should be
as many numbers as users). Then press
Ctrl+U to return to the main operating menu.
5 Go to menu 1.1.1 (User characteristics). The
system displays the SELECT USER screen.
6 On the line OR BY DN, enter the DN for the
ISDN user to be configured (for example the
number you have created during the
preceding steps). Press Enter. The screen,
ISDN USER “equipment number” is
displayed.
7 Configure the ISDN user characteristics as
required.
8 Repeat steps 5 to 7 for each ISDN user to be
configured.
9 Program the DN on each ISDN terminal. To
do this, please refer to the instructions for
programming terminals.

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179

Incoming trunk calls distribution


For ISDN trunks, DID analogue trunks, and digital ¾ See part 2 for
trunks, the DID corporate numbers plan gives incoming Internal dialling
calls direct access to operator services (OP<1-15>.SV) or
call distribution services (ACC.x). The DID number

Installing a new
received on the incoming trunk is analysed by the
Incoming call numbering plan and directed to:

MC 6501L/R
• a user or group of users

• operator services (OP1 SV to OP15 SV)

• call distribution services

During the system initialisation, you created one single

call distribution (ACC.0). By default, this was assigned
to the installation trunk groups to route calls from public
trunk lines to the operator service OP1 SV.

PBX
C all distrib ution
serv ice fo rP S T N calls
A C C .0 P u blic exch an ge
n etw o rk

C all distribu tio n

C all distrib ution
service for in ternal calls
In te rn al serv ice fo r tie-lin e calls Private
calls n etw o rk

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180 Incoming trunk calls distribution

Additional call distribution services can be created and

assigned for each type of traffic flow: internal, external
and private

Operator services are one or more operator consoles

organised to handle call distribution. The operator service
OP1.SV is created and assigned to the call distribution
service ACC.0 by default.

Setting up DID corporate numbers

Description
Define DID corporate numbers and select the routing for
the incoming trunks call distribution.

Considerations

• if the Incoming call numbering plan identifies the

DID number as an internal number, it is compared
to the numbers in the DID corporate number plan

• if the DID number is defined in the corporate

number plan, the call is routed according to the
routing defined for it in the plan

Entries

• for routing, select:

CALL DIST to route calls using defined call
distribution services
or
OP<1-15>SV to route calls to one of the defined
operator services

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181

• if you route calls using a call distribution service,

you must then enter the name of the call

distribution service to be used, for example ACC.x
Programming steps

Installing a new
1 Define a DID corporate number.
Go to menu 1.3.2.4 (DID corporate

MC 6501L/R
numbers). The screen DID CORPORATE
NUMBERS appears.

2 On the line DESCRIPTION TO UPDATE

NUMBER, enter an unused line number (1-64)
for a new DID number. Press Enter. The
screen DID CORPORATE NUMBERS appears.
3 On the line RECEIVED DIGITS, enter the
DID number. Press Enter. The screen DID
CORPORATE NUMBERS appears.

4 Select the routing.

On the line ROUTING, select CALL DIST. to
use a call distribution service, or OP<X>.SV
to use an operator service for routing calls.
5 If CALL DIST is selected in step 7, a new
line appears. Select the name of the
appropriate call distribution service.
6 On the line CALLING FUNCTION SERVICE,
select NO. This feature is not used.

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182 ISDN services

ISDN services

Defining the ISDN installation

identification (IID)
Description
ISDN IID enables the PBX to send the origin of the call
(the user’s number) to the local exchange.

An advantage of ISDN IID is that the far end party

receives calling party number information on incoming
calls. If the call is not answered immediately, a message
appears indicating that a call has been received and the
calling party DN is stored for an automatic recall.

Entries

• any valid ISDN main directory number, for

example an operator DN, that an external caller
will dial to reach the PBX can be used for IID

• ISDN DNs do not consist of the prefix plus the first

digit. To program those digits, see Changing
prefixes for automatic redial

Considerations

• if the PBX does not transmit a correct calling party

number, the local exchange will deliver a
network-provided number which is the default DN
assigned to an ISDN line pool (interface)

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183

Programming steps 
1 Program IID 0.
Go to menu 1.2.7.4 (IID Definition). The
screen IID DEFINITION appears.

Installing a new
2 On the line IID 0: INTERNAL PLAN, select
PLAN 1 and press Enter.

MC 6501L/R
3 On the line NUMBER, enter the installation
directory number (area code + central office
code + subscriber number) and press Enter.
This number is referred to as IID 0 in the
next steps.
4 Assign IID 0 for outgoing calls.
Go to menu 1.2.7.6 (Outgoing handling).
The menu SELECTION OF CALLING PARTY
appears. Press Enter. The screen OUTGOING
FOR LOCAL appears.

5 On the line FALLBACK EXISTING, select YES.

Press Enter.
6 On the line IID SENDING, select ALWAYS.
7 On the line IID#, enter 0 which indicates the
line number defined at step 3 and press
Enter. The screen OUTGOING FOR PLAN 1 ON
. . appears.

8 Press Enter then Ctrl+U to return to the main

menu.

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184 ISDN services

Setting up automatic redial

Description
If the call is not answered within the extension ringing
time-out, a message on the telephone shows a call has
been received. The call can be returned automatically by
pressing the consult and redial keys on the telephone, if
the extension called has access to the feature.

Programming steps

1 Go to menu 1.2.7.6 (Outgoing handling).

The screen SELECTION OF CALLING PARTY
appears.
2 On the line BY PLAN, select PLAN 1.

3 On the line AND BY DIRECTION, select FNPA

LCL. Press Enter. The screen OUTGOING FOR
FNPA LCL appears.

4 On the line AND THE CALLED PARTY PLAN,

select PLAN 1.
5 On the line ON TRUNK GROUP, select the
appropriate ISDN trunk group.
6 On the line FALLBACK EXISTING, select YES
or NO. If NO is selected, a public directory
number is supplied by the local operator.

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185

Key-coded software 
Software keys are password numbers provided by the
system manufacturer. They are required by the system in
order to enable keyed features.

Installing a new
If you have purchased feature software key(s), you will

MC 6501L/R
have been given a digit key for each function. Once the
appropriate software key has been entered, the system
makes the corresponding function available.

Enter the codes in the Programming Record. You will

need the codes to restore an upgraded system after a
system start-up.

The MC 6501L/R key-coded software available is listed

in the following table.

Function name Function description

Hospital In addition to the Hotel/Motel

features, specific features for
Hospital configuration are available

Hotel specific features for Hotel/Motel

configuration

Call Dist. (ACD) enables additional features for

Automatic Call Distribution (ACD)

Listen/Intervention allows the ACD group supervisor to

monitor ACD agent calls

Least Cost Routing routing facilities offered by the PBX,

(LCR) in order to reduce the cost of
communication on the public
network.
- Sheet 1 of 2 -

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186 Key-coded software

Function name Function description

Direct Inward System Direct Inward System Access

Access (DISA) (DISA) allows selected users to
access the PBX from the public or
private network

Ticket>128 Octets an extended Simple Message Detail

Recording (SMDR)

AVS 2000 not used

Multisite allows organizations with multiple
locations or branch offices to build
an economical private network

CSTA <x> device PBX/Computer interaction

(x=16, 32, 64, 128,
256, 512, 1024,
2048)

Windows MMC used for a programming console

such as a PC running Windows and
a proprietary user interface
application

SVI V24 <x> Access used for a proprietary interactive

(x=2, 4, 8, 16, 32, 64) voice mail system using a V24 link

SVI Q23 <x> Access allows a customer voice mail system

(x=2, 4, 8, 16, 32, 64) to operate with the PBX
(see Voice mail integration)

SVI Q23+ <x> used for a proprietary voice mail

Access system using an extended DTMF
(x=2, 4, 8, 16, 32, 64) code
Basic Directory to enable the integrated directory
- Sheet 2 of 2 -

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187

Unlocking a keyed function 

1 Go to menu 3.7.1 (Unlocking ADV
functions). The menu UNLOCKING ADV
FUNCTIONS appears.

Installing a new
2 On the line BY CODE, select a <FUNCTION

MC 6501L/R
NAME>. Press Enter. The menu <FUNCTION
NAME> UNLOCKING appears.

3 On the line UNLOCKING KEY, enter the

software key for the function selected in step
2. Press Enter.
4 Repeat these tasks for each keyed function to
be unlocked.

Displaying a keyed function

You may not know if a software key has been entered
successfully until the keyed function status has been
changed from the locked to unlocked status.

1 Go to menu 3.7.2 (ADV functions display).

The menu ADV FUNCTIONS DISPLAY
appears.
2 Confirm the function is unlocked.

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188 Key-coded software

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189

Before you leave the site 

Installing a new
Once you have completed setting up the system for the
customer, there are a few final details that must be taken

MC 6501L/R
care of before you leave.

The recommended sequence is:

✔ change and record the passwords for installation

and system administration (menu 3.5)

✔ erase the logbook (menu 4.5)

✔ reset the metering counters (menu 4.2.5)
✔ set up a remote programming access for system
maintenance (menu 1.3.1.2.1 or 1.3.2.1)

✔ back-up the configuration software (menu 5.2)

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190 System passwords

System passwords
The installer password allows access to the menu for
changing password names and redefining the programs
they can access.

It is recommended that new passwords are assigned when

installation has been completed.

Changing system passwords

Considerations

• all passwords can be reset; make sure the new

passwords are recorded in the Programming
Record and the users know the level of access that
they have.
Programming steps

1 Go to menu 3.5 (Passwords management).

The screen PASSWORDS MANAGEMENT
appears.
2 Delete the default password names of each
profile category and enter new passwords as
required.
3 Make a note in the Programming Record of
the new passwords and the menu each can
access.
4 On the line INSTALLER PASSWORD, enter a
new password. Retain a separate record of
the new password for maintenance and
support purposes.
5 Press Enter to confirm your data.
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191

MC 6501L/R logbook 
The MC 6501L/R logbook stores simple message detail
records (SMDR).

Erasing the logbook

Installing a new
MC 6501L/R
Description
This menu will clear the entire logbook.

Programming steps

1 Go to menu 4.5 (Logbook erasure). The

screen LOGBOOK ERASURE appears.
2 On the line LOGBOOK PASSWORD, enter the
password and press Enter. The screen shows
LOGBOOK ERASED.

Metering counters
Metering counters measure use of all aspects of the
system. It may be necessary to clear all the counters
before you leave.

Erasing metering counters

Description
Clear the metering counters.

Entries

• select yes for the counters you want to reset to zero

• select no for any counters you do not want to reset

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192 Remote programming access

• the SMDR password is referred to as the

monitoring password in the menu PASSWORDS
MANAGEMENT

Programming steps

1 Go to menu 4.2.5 (Counters reset). The

screen SELECTION OF COUNTERS TO BE
RESET appears.

2 Select YES on each line for the type of

counter to be erased. Press Enter. The screen
COUNTERS RESET appears.

3 On the line SMDR PASSWORD, enter the

password and press Enter. The screen will
show COUNTERS TABLES SET when the
reset is complete.

Remote programming access

Setting up remote programming access

Description
Remote access to the internal modem allows
programming and maintenance of the MC 6501L/R from
a central site.

Considerations
There are two methods of gaining remote access through
the internal modem:

• by calling a local operator or a user on the system

who can transfer the call to the internal modem

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193

• by a direct call to the internal modem (DID

number)

Programming steps for call transfer access

1 Go to menu 1.3.1.2.1 (Access to features).

Installing a new
The screen ACCESS TO FEATURES appears.

MC 6501L/R
2 On the line REMOTE MAINTENANCE MODEM
CALL, a default extension number is given.
This number may be changed, but must
comply with the internal numbering plan.

Programming steps for direct call access

1 Go to menu 1.3.2.1 (Internal dialling). The

screen INCOMING PLAN: LOCAL NUMB.
appears.
2 On the line REMOTE MAINTENANCE MODEM
NUMBER, enter the DID number assigned to
the internal modem. Press Enter.

System reset
Some entries require a system reset for acceptance of the
programmed information.

The MC 6501L/R can be reset in two ways:

• manually by pressing the reset button on the CPU

card

• automatically using menu 5.1.3

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194 Saving office data

Resetting the system automatically

Description
Reset the system to accept programmed parameters.

Programming steps

1 Go to menu 5.1.3 (Restart requested). The

screen RESTART REQUESTED appears.
2 On the line RESTART TYPE, select STANDARD
and press Enter. A new line appears.
3 On the line CONFIRMATION, select YES. Press
Enter.

The restart procedure is complete when the main menu

appears. When the main menu appears you can continue
programming.

Saving office data

After an installation has been completed, back-up the
customer configuration program by saving it to a disk. If
a total reset must be repeated, the backed-up copy of the
customised configuration program can be reloaded rather
than manually reprogramming the system.

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195

Saving office data using a serial back-up 

Description
Back-up the customer configuration using a serial back-
up.

Installing a new
Consideration

MC 6501L/R
• this example is using Windows 3.xx; for a different
application, refer to the manufacturer’s instructions
for exchanging binary files between data terminals
• there is a time-out once the transfer begins; do the
next step immediately

Programming steps

1 Connect the programming console serial port

with VT100 emulation, for example a PC
with Windows application to the PBX MDF.
2 Insert a formatted disk into the floppy disk
drive.
3 Go to menu 5.2 (Configuration transfer). The
screen CONFIGURATION TRANSFER appears.
4 On the line TRANSFER MEDIA, select SERIAL
PORT.

5 On the line DIRECTION TRANSFER, select

FULL BACKUP. Press Enter. The screen
CONFIGURATION TRANSFER appears.

6 On the line DEBIT, select 9600.

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196 Saving office data

7 On the line IDENTIFICATION, enter a name

that can be used to identify the binary file
(up to 16 characters).
8 Set the VT100 emulator parameters to
receive a binary file.
In the VT100 menu, click SETTINGS. In the
drop-down menu click COMMUNICATION
and in the dialogue box select BAUD
RATE:9600
9 In the VT100 menu, click TRANSFER. In
the drop-down menu click BINARY
TRANSFERS. In the dialogue box select
XMODEM.
10 On the line CONFIRMATION, select YES. Press
Enter.

CAUTION
Time-out
Do the next step quickly before the time-out
expires

11 The message PLEASE WAIT. WORK IN

PROGRESS appears. Do not wait.
Immediately initialise the transfer as
follows:
12 In the VT100 menu, click TRANSFERS.

13 In the drop-down menu click RECEIVE

BINARY FILE.

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197

14 In the dialogue box: 

• select the floppy disk drive (usually A:\)
• enter a file name (maximum eight
characters)

Installing a new
• enter the suffix “bin” (for example,
backup01.bin)

MC 6501L/R
• click OK

The configuration program will be saved to the floppy

disk. When the back-up is completed, the cursor flashes
and the Windows Terminal back-up display at the bottom
of the screen is cleared.

Test the installation

Confirm the entered system data and hardware, including
cable connection, by completing the following
operational tests.

Testing basic connections

Basic connection test at MDF:

• station line test (operator call from all stations)

• central office trunk test (incoming, outgoing)

• tie line trunk test (incoming, outgoing)

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198 Test the installation

Testing service features

Service feature tests, for example:

• call transfer

• call hold

• call pick-up

If your tests have been successful, your MC 6501L/R is

now ready for use. If you have additional programming
for the customer, go to part 2.

MCPS8383BCAAB01, Edition 2.00, April 2000