Ericsson BDV BS 101 01 Installation Instructions Manual

INSTALLATION INSTRUCTION

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SEA/EBMP Stangelberger

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SEA/EBMP ASB 150 02

Documentnumber

1531-BDV BS 101 01 Uen

Date

Rev

1998-05-29 L

Database reference

Reference

1531-BDVBS10101Uen-1-L.emf

INSTALLATION INSTRUCTION

EXCHANGE CABINET

BDV BS 101 01

1(46)

businessphone

INSTALLATION INSTRUCTION

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3(46)

Contents Page

1 GENERAL . . . . . . . . . . . . . . . . . . . . 4

1.1 Supplementary documents. . . . . . . . 4

1.2 Tools . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 DECLARATION OF

CONFORMITY . . . . . . . . . . . . . . . . . 5

3 HOW TO OPEN THE CABINET. . . . 7

4 INSTALLATION . . . . . . . . . . . . . . . . 7

4.1 Mounting of the cabinet . . . . . . . . . . 7

4.2 Safety and EMC . . . . . . . . . . . . . . . . 8

4.3 Access to the boards . . . . . . . . . . . . 8

5 POWER SUPPLY UNIT . . . . . . . . . . 9

5.1 Replacement of the power

supply unit . . . . . . . . . . . . . . . . . . . . 9

5.2 Power feeding with an external

DC supply. . . . . . . . . . . . . . . . . . . . 10

6 ALLOCATION . . . . . . . . . . . . . . . . 10

Contents Page

7 INTEGRATED CORDLESS. . . . . . 28

7.1 Board Descriptions . . . . . . . . . . . . 28

7.2 Traffic capacity. . . . . . . . . . . . . . . . 28

7.3 IC-CU2 (GAP-Protocol) . . . . . . . . . 30

7.4 Base Station (KRCNB 201 03/_

and KRCNB 301 01/_). . . . . . . . . . 31

8 LINE NETWORK. . . . . . . . . . . . . . 39

8.1 Cables for BDV 113 08 . . . . . . . . . 40

9 MARKING OF CABLES . . . . . . . . 44

10 INTERNAL MDF

(Main Distribution Frame) . . . . . . 44

11 Door Interface Unit

(BFY BS 10101/1) . . . . . . . . . . . . . 45

12 INSTALLATION OF ALARM

INTERFACE UNIT . . . . . . . . . . . . . 46

6.1 Power supervision of ELU-A. . . . . . 10

6.2 Connection of CM-Boards . . . . . . . 11

6.3 System Power Consumption. . . . . . 11

6.4 BTU-A and BTU-A2 13

6.5 Power failure circuit (PFC) . . . . . . . 13

6.6 BTU-C. . . . . . . . . . . . . . . . . . . . . . . 14

6.7 BTU-B. . . . . . . . . . . . . . . . . . . . . . . 15

6.8 BTU-B2. . . . . . . . . . . . . . . . . . . . . . 15

6.9 BTU-D and REG). . . . . . . . . . . . . . 17

6.10 BTU-E. . . . . . . . . . . . . . . . . . . . . . . 19

6.11 CPU-D_ and AUX_ . . . . . . . . . . . . 23

6.12 CPU-D4 . . . . . . . . . . . . . . . . . . . . . 24

6.13 ELU-A and ELU-D . . . . . . . . . . . . . 26

6.14 VMU-HD . . . . . . . . . . . . . . . . . . . . . 27

6.15 VMU-D . . . . . . . . . . . . . . . . . . . . . . 27

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4(46)

1 GENERAL

Exchange cabinet BDV BS 101 01 is designed to be
furnished with Printed Board Assemblies (hereafter =
boards or PBAs) belonging to ERICSSON’s PBX­system ASB 150 02. System functions, desired by the
customer, are realised with appropriate boards and
system programming.

The PBX is powered by an internally mounted power
supply that is available in two versions. The standard
version is an AC/DC converter and the version with
battery charger offers the same facility but additionally
provides battery back-up or can be supplied from an
external DC-source.

The installed PBX shall be made operational in
accordance with the stipulations that apply for system
ASB 150 02. See document START OF OPERATION

(1537-ASB 150 02).

NOTE: Boards may only be inserted or re-

moved from the cabinet when the power
supply in the cabinet is switched off.

The new cabinet is adapted for boards with brackets
containing screws to provide a ground connection and
should only be equipped with these boards.These
screws must always be fastened to ensure proper op­eration.

Each branch on the extension line must have:

1 A protective resistor of 10 Ω/1W

(REN 195 42/1) connected in series
between cabinet and MDF

2 An overvoltage arrester (gas discharge

tube) for quenching surges to protective
ground shouldbe installed onthe network
side of the protective resistor.

MDF

Overvoltage arresters

Protective
resistors 10 Ω/1W

(REN 195 42/1)

Protective
ground

(NGC 402 01)
Housed in:

overvoltage protection
cassette (769 027/3)

Note: Make sure the MDF is really connected

to protective ground.

Principal circuit drawing.

Don’t use older board revision states in the new
cabinet.

In principle, a cabinet’s board position can be used for
arbitrary furnishing with boards belonging to PBX
system ASB150 02 butthefirst position isreserved for
the CPU-D_.

Due to the limited load of the cabinet’s power supply
units, the definitive board configuration in a cabinet
must follow the prerequisites in section 6.3.

However, it isadvisable to protect trunk lines withextra
overvoltage protectors especially in geographical
areas highly exposed to lightning.

Any lines connected to the PBX that are subjected to
excess voltage (transients) in conjunction with e.g.
lightning discharges must be equipped with excess
voltage protection.

Special considerations must be taken to analogue
extension lines that are placed outdoors. In order to
prevent the analogue extension boards secondary
protection device from blowing in case of lightning.

1.1 Supplementary documents

• Document collection EN/LZB 103 1233

• INSTALLATION INSTRUCTION

(1531-BML BS 101 01) for the power supply,

equipped with battery charger

1.2 Tools

In addition tocustomaryinstallation tools, the following
are recommended:

• Use theappropriate connectiontool 769027/2 to

connect the cables in the internal MDF.

• Use the appropriate slotting tool LSY138 252 to

connect the cables to the external
MDF SXK 106 4139/1.

• Board extractor for PBAs (handle LTD 117 02

and bottom LTD 117 12)

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2 DECLARATION OF CONFORMITY

5(46)

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6(46)

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3 HOW TO OPEN THE

CABINET

Unpack the exchange cabinet.
Using ascrew driverliftthe bluelid. Unscrew thescrew

below and remove the cabinets front cover. Check that
everything hasbeen received accordingto the delivery
note and that nothing has been damaged during the
transport.

businessphone

4 INSTALLATION

The PBX can be delivered as a customer configured
unit or the add-in boards are delivered separately. The
cabinet is always equipped with a power supply,
suitable for the local mains. Please check the label
stating the permitted mains voltage. The cabinet is to
be mounted on an indoor wall. A mains outlet must be
provided near the equipment and shall be easily
accessible. The premises shall comply with the
following prerequisites:

• The air shall be free from dust and smoke

• Environmental conditions according to

ETS 300 019 (1-4) (Temperature shall be
between + 5°C and +40°C and relative humidity

may vary between 15% and 80%)

• The PBX shall not be exposed to direct sunlight

• The cable shall preferablyrun into the PBX from

below the cabinet to ensure sufficient air flow.

4.1 Mounting of the cabinet

2

1

Lift blue lid to access the screw below.

2

Then turn the screw to loosen the cabinet

1

cover and take off the cabinet cover.

Use the enclosed drilling plan and drill four 8 mm
holes. Mountthe cabinet byusingthe enclosed screws
and plugs. Take into consideration the normal working
height above the floor (about 1.30 m to thelower edge
of the cabinet) and leave enough room for access on
both sides of the cabinet.

Overall dimensions of the cabinet:

• 485 x 600 x 134 (H x W x D in mm).

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4.2 Safety and EMC

8(46)

To fulfil electrical safety requirements IEC 950 and
EN 60950 respectively EN 41003, the exchange must
be connected toprotective earth via a flexible wire with

a cross sectional area of at least 6 mm2.
Local requirements shall be adhered to.
The connection must be carried out by authorised

personnel.

A

B

BATT.

Shelf
cover

SWIVEL­SHELF

Turn
out

PSU

MDF

A

Connection
for protective
earth

cross sectional area >6 mm

2

Wrist strap
connector

(only for
AUSTRIA)

Front edge

168

Label
SVB BS 101 02/_

Note: The mains current rating stated on the label
is the maximum current of the charger version.

Bottom view of cabinet BDV BS 101 01

All line interfaces in the PBX are protected in
accordance with K.21 (voltage transients up to 1.5kV).

BTU-A, BTU-A2, BTU-B, BTU-C, BTU-D and BTU-E
are working with interface TNV.

All other boards and the V.24 port work with interface
SELV.

4.2.1 EMC

The ferrites, with the ERICSSON ordering number
STF 82 601, should be situatedclose to the slot where
the cablesare led outof the cabinet.Twoturnsthrough
the ferrite core are sufficient to comply with EN 55022
Class B and to avoid disturbances in non-industrial,
residential (home) usage.

snap-on
wrist strap
connector

Protective earth

Before operating,ensure that the chassis isconnected
to a hard wired protective earth.

4.3 Access to the boards

NOTE:

Turn out the transport screws (A)about 1 cm at thetop
and bottom of the swivel shelf. See figure in section

4.2. Hold the bottom of the shelf, lift the shelf slightly

and turn the swivel shelf counter clockwise(ccw). Turn
the screw (B) two turns at the top of the shelf cover
and remove the cover.

Makesure thatasound groundconnection to
the exchange has been established. Other­wise this can be hazardous in case of light­ning. Use a grounding wrist strap when
handling PBAs sensitive to electrostatic dis­charges.

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9(46)

5 POWER SUPPLY UNIT

The power supply units (PSU) for the cabinet are
AC/DCswitching powersupplieswith two inputvoltage
ranges. Please check if the label states the proper
mains voltage as required. For mains supplies with
230V to 250V AC, two versions are available:

• BML BS 101 02/1 (PSU 230V standard)

• BML BS 101 01/1 (PSU 230V equipped with
battery charger).

Formainssupplies with 115V to127V AC twoversions
are available:

• BML BS 101 02/2 (PSU 115V standard)

• BML BS 101 01/2 (PSU 115V equipped with
battery charger).

The PSUs deliver 25 W on the PBA supply voltages
and 80 W on the 48 V supply voltage. After switching
on, the power supply has a start-up delay of 8
seconds.

Warning: The power switch does not disconnect
from mains. The mains cord must be unplugged to
disconnect the mains.

The PSU is equipped with a mains fuse rated

5.1 Replacement of the power supply unit

The cabinet is delivered with a PSU already installed.
The procedure how to dismount the unit is described
below.

a Switch off the PSU (A) and unplug the mains

from the wall outlet. If the unit is a PSU with
battery charger, disconnecttheDC supplyline to
the batteriesand plugoff the alarmconnector on
the unit.

b Disconnect the DC supply cord (D) to the swivel

shelf.

c Unscrew the transport screw(B) completely and

make 3 turns on screw (C) counter clock wise.

d Push the PSU from the bottom and turn out the

PSU clock wise, unhinge and take it out. Then
pull off the mains plug at the bottom of the PSU

and disconnect the ground wire.
e Install the PSU in the reverse manner.
When installing a power supply unit with battery

charger and battery backup please refer to the

INSTALLATION INSTRUCTION
(1531-BML BS 101 01).

250VAC 6,3 A T.

NOTE: This fuse NGH 243 01/6300 can be ordered
from Ericsson but is a non-accessible and non-user
serviceable part. Only authorised personnel is
allowed to change the fuse. Contact the local
supplier in this matter.

Battery backup time

The batteries in the integrated battery pack have a
capacity of 2Ah. The power consumption on the 48 V
should be less than 1.7A. Using fresh batteries a
backup time of 20 minutes is guaranteed and
depending on the system configuration longer backup
times could be achieved.

(D)

Power switch
does not
disconnect
unit from
mains.

Standby only

Ground

(A)

(B)

Label

(C)

Mains power cord plug
IEC 320 C17

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5.2 Power feeding with an external DC supply

When the PBX is supplied with power by an external battery with 48V nom. (44 - 56V), the installation of a power
supply equipped with a battery charger (BML BS 101 01/_) is required. The DC supply is connected directly to the
PSU.

An externally accessible fuse 250VAC 6,3 A T isprovided on the PSU,but additionally a fuse must be installed in the
supply line with DC current switching capability greater than 160 A.

Note: To prevent arcing never connect the DC source when the PSU has not started-up.

Use the mains to power up or use an external switch to connect the DC source. This is a precaution to minimise the
contact loads on the plug.

For further details see INSTALLATION INSTRUCTION (1531-BML BS 101 01).
Battery operation often requires different preconditions consequently, only an overview can be provided with regard

to battery capacity/charging capacity. The batteries should be supplied locally. The type is described in detail in

INSTALLATION INSTRUCTION (1531-BML BS 101 01).

6 ALLOCATION

In principle, all board positions in cabinet BDV BS 101 01 can be used for arbitrary configurations with PBAs
belonging to PBX-system ASB 150 02.

The boards are equipped with ground brackets on the top and bottom. When installing make sure to fasten the
boards with the supplied screws.

There arerecommendations for configurationsin order to simplifyoperation and maintenance.For further information
see document collection EN/LZB 103 1233.

Sub-equipped boards:

Install sub-equipped boards in the last position after the standard boards to enable easy upgrading without having to
re-number trunks and extensions.

6.1 Power supervision of ELU-A

The board is equipped with an automatic traffic limiter restricting the internal power dissipation on the board to a
maximum of 12W. This depends on both the line length and the number of lines busy.

When the power consumption exceeds the limit, no more lines have access for use and at least two lines have to go
on hook for all lines to work normally again.

When connecting external voice systems a maximum of 8 lines are recommended on each board. The remaining
lines on the board are to be connected to low-traffic extensions.

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6.2 Connection of CM-Boards

Connect the correct type of call metering board, according to the figure below, on BTU-A board ROF 157 5110/_ or
ROF 157 5127/_ and in the same fashion on the BTU-C board ROF 157 5111/_. The BTU-C cannot be equipped
with a CM50 board as the flat ribbon cable cannot be connected and CM12/16 (ROA 219 5135/1).

Line 0 - 1

CM­board

Line 2 - 3

Note: When installing a CM50-board connect the

cable before mounting the CM50-board. The
BTU-A board must also be connected to

Line 4 - 5

earth.

The following boards are available CM50 ROA 219 5064/1, with flat ribbon cable and CM12/16 ROA 219 5135/1 or
ROA 219 5062/1 without cable.

6.3 System Power Consumption

The power demand of the system comprises the sum of the current demands of all extensions, base stations etc.
This total current hastobe delivered by the power supply. Choose the one delivering therated current with a suitable
margin for add on equipment depending on the installation site.

Base Station Power Demand

To minimise the power dissipation on the serial communication wires EPP should be used extensively. Up to 60 BS
can be installed in a cabinet. Short power peaks can be covered by installing a battery cabinet.

The total current for all BS must be less than the power supply(s) capacity. The total 48 VDC load on the power sup­ply has to be calculated as follows:

Cable
length

0m
100m
200m

300m
400m

500m
600m

700m
800m

900m
1,0km
1,1km
1,2km
1,3km

1,4km
1,5km
1,6km

STD EPP

0,5 mm

104

104

110

106

114

110
112

121

115

129

119
121
125

129
133

139
146
152
160

171
183
204

∅

STD EPP
0,6 mm ∅

104

104

108

106

110

108

114

109

118

110
112

114
117

118
121

123
125
127
129

131
135
137

STD EPP

0,5 mm

77

104

83

106

87

110
112

94

115

103

119
121
125

129
133

139
146
152
160

171
183
204

∅

STD EPP
0,6 mm ∅

104

104

108

106

110

108

114

109

118

110
112

114
117

118
121

123
125
127
129

131
135
137

This table states the current demand in mA for a Base Sta­tion depending on the cable length and cable diameter.

Calculation example:

Line length to Base Station:
Resistance of loop:

Cable diameter (

φ):

200m

0.18 Ω/m
0,6 mm

Assuming 4 Base Stations are already
connected they consume a current of:

440 mA
Power demand taken from Power Calcu­lations below, for telephones:

984 mA

Total load on power supply: 1424 mA

This total load for the exchange can be
suppliedby thepowersupply asitis less
than 1.7A.

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12(46)

TELEPHONES

BASIC
ECONOMY

ECONOMY

plus

STANDARD

EXECUTIVE

DBC 213 with 2 DBY 409 01
DBC 213 with 4 DBY 409 02*)

1

) provides current on trunk lines in active state to public exchange.

CURRENT CONSUMPTION

Typ (mA)Max (mA)

DBC 210
DBC 199

DBC 601
DBC 751

DBC 211
DBC 201

DBC 212
DBC 202
DBC 631
DBC 755
DBC 752

DBC 213
DBC 203
DBC 662
DBC 753

14
25

27
38

14
30
14
30
65

50
50
35
35
70
75

42

35 70

35
35

32
35

50
35

50
70

73
73
70
70
73

70

TELEPHONES

OPERATOR

CONSOLE
DBC 214 with 2 DBY 409 01

DBC 214 with 4 DBY 409 02*)
ANALOGUE

(in active state)
TAU 2610
Desktop Adapter

BTU-B (S-interface
per physical link)

BTU-C
index (/1,/2)1)

Radio base station:

CURRENT CONSUMPTION

Typ (mA)Max (mA)

DBC 214
DBC 663
DBC 754

40
67

75
35

35
40

4

(per trunk)
refer to table above

14

50

120
110

70

70

4

23

50

35

The maximum values for telephones result when all LEDs are lit and if available, loudspeaking is on at max. volume.
*) with connected external power supply.

Power calculation example

LINE

EQUIPMENT

QUANTITY

DBC 210 3 54
DBC 201 5 150
DBC 202 13 390
DBC 203 10 350

CURRENT

(mA)

Calculation example:

selected
line equipment

3 x DBC 210

5 x DBC 201
13 x DBC 202
10 x DBC 203

1 x DBC 663

Total: 32 system telephones

DBC 214 1 40

TOTAL 32 984

The calculation above shows howto calculate the current demand fora given installation. This amount of currenthas
to be supplied by the installed power supply.

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13(46)

6.4 BTU-A (ROF 157 5110/-) and BTU-A2 (ROF 157 5120/_)

On delivery from the factory both contacts are in the OFF
position, and the line is a normal trunk.

When both contacts on a DIP-switch are set to position
ON, the line is to be regarded as a music source input.

Different contact positions are not allowed.
Note: Only lines4-7canbeused as a music source

input. Not available on BTU-A subequipped ROF
157 5127/_.

.

The DIP-switch is shown
with both contacts in
OFF position

ON

1 2

86

85

Line 4

Line 5

Line 6

6.5 Power failure circuit (PFC)

In the event of mains failure and if no battery back up
is available for the PBX, there are normally 2 lines on
the BTU-A and BTU-C (see under BTU-C on next
page) board which automatically switch the trunk lines
to analogue telephones connected to this board.

On power failure, these telephones will automatically
be connected to the public exchange.

It is also possible to use the power failure telephones
during normal operation, if an ELU-A board is in­stalled.

BTU-A & BTU-C1

bPFb

ELUA

a

PFa

Power failure set

La

Trunk

Lb

BTC

Indicator

87
88

Line 7

Connection field 6

C

LA0
LB0

LA2
LB2

LA4
LB4

LA6
LB6

*)

A

18
20
22
24

26
28

30
32

LA1
LB1

LA3
LB3

LA5
LB5

LA7
LB7

Line wires for
connection to
Public Exchange

*)

Not available on sub-equipped board see below

Relay shown in power fail position

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14(46)

Connection field 4

Not always mounted
(market-dependent)

18

PFa0

4

PFb0
PFa1
PFb1

20
22
24

18
20
22

24
Connection
to analogue
telephone(s)

PFa2
PFb2
PFa3
PFb3

A

26
28
30
32

A

C

analogue telephone

a0

Connection to
ELU-A board

b0
a1
b1

On the BTU-A2 the
bottom half of this
connector is used
to connect to PTT
signalling ground

Connection to
ELU-A board

C

Connection of

a0

Only mounted if the BTU-A
has 4 PFC circuits (market

b0

dependent).
This connector is used

a1

for PFC circuits on the
BTU-A2

b1

6.6 BTU-C (ROF 157 5111/-)

Connection field 4 and 6

RED

YELLOW
GREEN

The index number

refers to the individual
on the board

power failure (field 4)

PFa0
PFb0

A C

a0
b0

trunk lines (field 6)

La_0
Lb_0
La_2
Lb_2

La_4
Lb_4
La_6
Lb_6

A C

La_1
Lb_1
La_3
Lb_3

La_5
Lb_5
La_7
Lb_7

Earth connection on BTU-A2 (Austria only)

Some markets require an earth connection of the in­coming PTT earth (functional earth) to the exchange.
This is provided on the connector installed above the
PFC circuit connectoron pins A22, A24, C22and C24.
Use an extra Krone bar toconnect the PTT earth wires
to the wires going to the board connector.

The BTU-C (ROF 1575 111/1)features eight incoming
trunk lines with DID. The first four individuals can also
be used for outgoing traffic.

BTU-A & BTU-C1

BTC

PFa

Power failure set

bPFb

ELUA

a

La

Trunk

Lb

Indicator

Relay shown in power fail position

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15(46)

6.7 BTU-B (ROF 157 5121/_)

Applies for indices 1 and 3

The BTU-B provides connection for up to 8 physical
links and every physicallink can be configured as a S­or T-interface. On the S-interface every link provides
remote power feeding with 40V/50 mA = 2W and con­nection for up to 8 terminals.

A

B

C

ON

D

418

6.8 BTU-B2 (ROF 157 5121/_)

Applies for indices 4 and 5

418

A
B

410 411

ON

ON

ON

ON

Insert PROM "RYS 102 521/ 1

A

Insert PROM "RYS 102 521/ 2

B

Insert PROM "RYS 102 521/ 3

C

Insert PROM "RYS 102 521/4

D

ON

ON

ON

ON

410 411
412 413
414 415
416 417

412 413
414 415
416 417

Insert PROM "RYS 102 521/ 3

A

Insert PROM "RYS 102 521/ 4

B

DIP-switches position 410-417

These switches control S- and T-interface termination
and S-interface power feeding on the link 0...7.

On factory delivery all
switches are set to OFF

4

Connects power feeding ground

3

Connects -40V for power feeding

21

Connects 100 Ω receive side termination

ON

Connects 100 Ω send side termination

INSTALLATION INSTRUCTION

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L

16(46)

Note: at the end of each line a termination resistor

must be installed (e.g. in the last wall outlet).

The switch 1 selects the termination on the transmitter
interface and switch 2 selects the termination on the
receiver interface. Switches 3 and 4 enable remote
power feeding to ISDN terminals connected to a link.
When connected as S-interface switches 1...4 should
be set to ON.

Settings of the S-interface relevant on
board indices -3,-4,-5

DIP-switch position 418

When selecting which link is to be configured
as a S-/Q-/T-interfaces start with switch:

Line pairs:

Q/T-interface

OFF... Q/T-Interface
ON ...S-Interface

ON

4
3

21

0 + 1
2 + 3

4 + 5
6 + 7

S-interface

On factory delivery all switches are set to OFF

Note: When selecting S- or T-interfaces start by

setting the T-interfaces using switches 4, 3, 2
and 1 in consecutive order then set the S­interfaces starting with switches 1, 2, 3 and 4.

Settings of the S-interface

Choose with RASC the configuration of the interface:
Extended passive bus default setting

and Short passive bus.

Ranges on the interface

The BTU-B is equipped with the S/T Bus Interface Cir­cuit eXtended (SBCX). This circuit offers the advan­tage of covering a higher attenuation on cables.

(refer to documentation of the TE) is also equipped
with a SBCX or equivalent.

1 km (standard range)

TE TE

TE TE TE

Ranges on the extended passive bus

TE

and up to 2 km with

TEs equipped with SBCX

TE

up to 500 m (standard range)

and up to 1.5 km with

TEs equipped with SBCX

SBCX

SBCX

BTU-B

Short passive bus

d1

TE

d4

TE TE

d3

BTU-B

d4 - up to 1m

with TR
in outlet

d1 - 150m to 250m (standard range)
d3 - line to terminal up to 10m

Extended passive bus

d1

d2

TE

d4

TE

BTU-B

d3

25 to 50 meters

d4 - up to 1m

with TR
in outlet

TE

d1 - up to 500m (standard range), d2 - between terminals

1,5 km on 30 nF cables with
TEs equipped with SBCX

d3 - line to terminal up to 10m

Abbreviations:

TE Terminal Equipment
TR Termination Resistor (

installed at the end of the

interface line. Use outlets with resistor mounted

Outlet according to IEC 603-7 with termination
Outlet according to IEC 603-7 without termina-

tion

)

The standard S/T-interface specification considers ca­bleswith 6,5 dBattenuation equivalent toabout 1000m
cable length in single terminal configuration.

Using the S/T Bus Interface Circuit eXtended (SBCX)
up to13 dB line attenuationcanbe covered. The figure
below shows the ranges using standard 0.6 mm diam­eter twisted pair unshielded cables with a capacitive
load of max. 30nF per km and the terminal equipment

INSTALLATION INSTRUCTION

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L

6.9 BTU-D (ROF 157 5112/1) and

Connection field 6

A

T0A
T0B

T1A
T1B

T2A
T2B

T3A
T3B

T4A
T4B
T5A
T5B

T6A
T6B

T7A
T7B

C

02
04
06
08

10
12

14
16

18
20
22
24

26
28

30
32

R0A
R0B

R1A
R1B

R2A
R2B

R3A
R3B

R4A
R4B

R5A
R5B

R6A
R6B

R7A
R7B

The DIP-switch is
shown with
both contacts in

OFF position

S/T-Interface for
connecting trunks
and S-terminals

REG (ROF 157 5112/2)

A

B

ON

1 2

197
200

17(46)

Wall outlet connection

4

5

6

3

8

1

7

2

Wiring side of 8-pole
wall outlet e.g.
KRONE RJ-K LN

Pin desig-

nation

optional

1

EIA/TIA 568 Wiring Schemes

NT function: TE function:
(polarity of remote

Transmit (-)

5
4

Transmit (-)

Receive (+)

3
6

Receive (+)

1

Power sink 3 (+)

2

Power sink 3 (-)

7

Power source 2(-)

8

Power source 2(+)

S-interface in
socket

(polarity of remote
power feeding)power feeding)

Receive (-)
Receive (-)

Transmit (+)
Transmit (+)

Power source 3(+)
Power source 3(-)

Power sink 2(-)
Power sink 2(+)

T-interface on
plug

199

198

Insert PROM "RYS 102 5xx/1

A

Insert PROM "RYS 102 5xx/2

B

6.9.1 DIP-switches in position 197 and 200

Depending on the firmware used, this board enables
either ISDN or CAS function. The PROM set is availa­ble for CAS (LZY203 2212/1) or ISDN PRA
(LZY203 2213/1). DIP-switch pos. 197 on BTU-D se­lects the register function of the board. The switch 200
is reserved for future use.

INSTALLATION INSTRUCTION

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18(46)

197/1 197/2 FUNCTION

OFF OFF

ON

ON OFF

ON

digital trunk MFC
digital trunk MFE

Register MFC
Register MFE

only
BTU-D

BTU-D
or
REG.

6.9.2 DIP-switches in positions 198 and 199

Selection of ground strapping for the coax 75 Ω or se­lection of the 120 Ω twisted pair interface.

198/1
199/1

OFF OFF

198/2
199/2

FUNCTION

120 Ω connection

1)

OFF ON screen connected toground
ON OFF screenconnected toground

via 1nF capacitor

1) Factory setting

On factory delivery the switches are set to OFF-posi­tion = no ground thus enabling 120 Ω interface with a
twisted pair cable. These DIP-switches connect the
75 Ω interface coaxscreento ground, either directly to
0Vorviaa1nFcapacitor.DIP-switch 198 switches the
receiver and199the transmitter side. The screenshall
normally be grounded on the transmitter side. Normal­ly, the screen on the reception side isnot connected to
ground. Refer to local market requirements

Ranges on the interface of the BTU-D

This interface coversthe short distance to the next NT
or Line Terminating Unit as the end point of a public or
private network. The range is only defined in terms of
the covered attenuation by the interface that is 6 dB. If
required choosecables with low attenuationto achieve
a maximum distance.

For ranges exceeding 6 dB attenuation additional digit­al data transmission equipment is required. Line Ter­minating Unit (LTU) ASB 501 04 is available for such
purposes.

Connection field 6

A

C

18
19
20

22
23
24

26
28

30
32

RING_OUT
TIP_OUT

RING_IN

TIP_IN
LA1

Outgoing
wires

LB1
LA2

Incoming
wires

LB2

Connection for 75 Ω
coaxial cable

Connection for
120 Ω twisted pairs

0 V

There are specificrequirements for thedigital interface
wiring to meet the demands of EMC.

If a twisted pair connection shouldbeinstalled and the
requirements of EN 55022, class Bhave to be fulfilled,
a ferrite is available with the ERICSSON ordering
number STF 82 601. Taking the cable and making
three turns around the ferrite core meets the demand
of sufficient noise reduction. The ferrite should be
situated close to the slot where the cables are led out
of the cabinet. In most cases this cable is supplied by
the PTT and should not be fed via the MDF.

Some markets (e.g. Austrian PTT) require the use ofa
double-shielded interface cable. The outer shield
should be connected to frame earth and the inner
shield shouldbe connected to0V on the board.A 20 m
long standard cable is available with the ERICSSON
ordering number TSR 901 0481/20000.

Coax 75 Ω and twisted pair 120 Ω interface

d1

Line terminating unit BTU-D

d1 - The line length depends on cable type used. The board

allows 6 dB cable attenuation at 1.024 MHz. Check cable
attenuation at 1,024 MHz per 100m.

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6.10 BTU-E (ROF 157 5113/_)

INSTALLATION INSTRUCTION

Documentnumber

1531-BDV BS 101 01 Uen

Date

Rev

Reference

1998-05-29 L

19(46)

SPEECH CONNECTION SETTINGS

2-wire connection

106...406

on

1 2 3 4

S1 S2

S3 S4

108/308

on

1 2

S5

INDIVIDUAL 0

uses switches 106 and 108/1

INDIVIDUAL 2

uses switches 306 and 308/1

SPEECH CONNECTION SETTINGS

4-wire connection

106...406

on

1 2 3 4

S1 S2

S3 S4

INDIVIDUAL 1

uses switches 206 and 108/2

INDIVIDUAL 3

uses switches 406 and 308/2

Switches select between 2- or 4-wire speech
connection. Two individualsshare switches 108
and 308

On boardswith Rev. R2Athese switchesare re­placed byrelays. These relays are setautomat­ically by programming the filter coefficients.

Connection field 4 and 6 at front of BTU-E_

Speech (field 4)

AC

18

LA_0
LB_0
LA_1
LB_1
LA_2
LB_2

LA_3
LB_3

M2_0
M20_0
M2_1
M20_1

M2_2

1

M20_2
M2_3
M20_3

M1_0
M0_0
M1_1
M0_1

M1_2

1

M0_2
M1_3
M0_3

20
22

24
26

28
30

32

Signalling (field 6)

AC

LC_0
LD_0
LC_1
LD_1
LC_2
LD_2
LC_3

LD_3

E2_0
E20_0
E2_1
E20_1

E2_2
E20_2
E2_3
E20_3
E1_0
E0_0
E1_1
E0_1

E1_2
E0_2
E1_3
E0_3

LA & LB - 2-wire send/re­ceive or 4-wire send.
LC & LD - 4-wire receive.

108/308

on

1 2

RED
YELLOW

GREEN
YELLOW
GREEN

S5

M-WIRE CONNECTION SETTINGS

APPLICATION

PAGING

SPEECH M-WIRES

2-wire

S6..off
S7..off
S8..off

AMERICAN
E&M
SIGNALLING

DOUBLE
M-WIRE
SIGNALLING

CAILHO E&M
SIGNALLING

4-wire

4-wire

4-wire

S6, S7 and S8
see local
requirements

S6..on
S7..on
S8..off

S6..off
S7..off
S8..off

CEPT L1/SSAC 15

Only on /2 boards

4-wire

S6..off
S7..off

S8..off

S6 connects -48V to M1 terminal via 6.2 Kohm
S7 connects 0V to M0 wire locally.

S8 connects 0V to M20-wire.

108

106

206

306

406

308

0

1

2

INDIVIDUALS

3

109

209

10
2

on

1 2 3

S6 S7 S8

309

INDIVIDUALS

3

409

1

M20_ and M0_ can be switched by S7 and S8 to 0V on
the BTU-E_ locally.

M-WIRE SETTINGS

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6.10.1 Paging connection

The figure shows howto connect the paging equipment Ericall Contactor with 2 wire speech. The PBX sends paging
information to paging system (pin 6A18) using M1 contact, and information about ’paging in progress’ or ’paging
equipment not present’ is received on the E1-wire (pin 6C18) from the paging equipment.

Switch settings

on

This switch setting is used for
signalling on E1 and M1.

1 2 3

S6 S7 S8

Applies for switches 109, 209, 309 and 409.

Z

DSLAC

0V

-48V

0V

S7

S5

M1

Detector

autom. 2/4wire

0V

PBX

4A18

4A20

6A18

6A20

6C18

6C20

LA

LB

M1 E1

M0 E0

E1 M1

E0 M0

Paging equipment

Detector

-48V

0V

0V

Figure showing Paging equipment and 2-wire speech with ’loop connection’ of the E&M-wires.

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6.10.2 Four wire speech connection

The four wire speech and signalling connection has the benefit of not needing additional signalling wires. There are
two different types of signalling supported:

Cailho E&M-signalling (balanced battery). The two way signalling utilises common mode DC pulses via the centre
tap of the transformer. On one side a detector is connected between the -48 VDC and the centre tap of the
transformer.The other end uses opto relay M4 to switch the line to 0V (Ground). The detector reads the current flow
to ground every time M4 closes.

CEPT L1/SSAC 15 with 2280 Hz tones. In this case no DC signalling is used but instead signalling is performed by
switching on and off a 2280 Hz tone, which is detected by a tone receiver on the other side. This is only available on
index 2 boards.

Switch settings

on

This switch setting inhibits signalling on E1 and M1. Only AC or DC
signalling on the four wire speech connection is used.

1 2 3

S6 S7 S8

Applies for switches 109, 209, 309 and 409.

2280 Hz

DSLAC

2280 Hz
detector

R

0V

autom. 2/4wire

0V

M4

1uF

Detector

560

PBX

LA

4A18

0V

Ω

-48V

4A20

4C18

4C20

LB

LC

LD

PBX or channel equipment

Detector

-48V

0V

Figure showing Cailho E&M signalling and CEPT L1 or SSAC 15 with tone signalling

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6.10.3 E&M-signalling

Signalling on E & M wires is done either using one or two E&M pairs depending on what is required. Using just E1
and M1 is a very common practice. One case to mention is the American E&M signalling where the M1 wire toggles
between -48VDC and 0V.

Double E&M signalling requires the E1/M1 wires for the signalling of information and the E2/M2 wires indicate
blocking of the connection. The E1/M1-wires are used for signalling and E2/M2-wires are used for blocking. The
figure shows 0V connection to the M-wires in both ends.

Switch settings

Standard E & M signalling

on

This switch setting is used
forsignallingon E1and M1.

1 2 3

S6 S7 S8

Double E & M signalling

on

This is the switch setting when
E1, E2, M1 andM2are used for
signalling.

1 2 3

S6 S7 S8

Applies for switches 109, 209, 309 and 409.

R

DSLAC

0V

autom. 2/4wire

S8**

0V

-48V

0V

-48V

S7

M3**

M1

Detector

**application specific

toggles between 0 and -48VDC
(e.g. American signalling)

PBX

4A18

4A20

4C18

4C20

6A18

6A20

6C18

LA

LB

LC

LD

M1 E1

M0

E1 M1

E0

PBX or channel equipment

Detector

-48V

0V

-48V

0V

E0 M0

0V

0V

-48V

0V

S6

M2

Detector

6C20

6A02

6A04

6C02

6C04

M2 E2

M20

E2 M2

E20

Figure showing four wire speech and standard (double) E&M signalling.

E20

M20

Detector

-48V

0V

0V

INSTALLATION INSTRUCTION

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23(46)

6.11 CPU-D_ (ROF 157 5118/_) and

AUX_(ROF1575 119/_)

Before installing the board mount the system software
PROMs in the appropriate positions.

Connections on the CPU-D_

For connection of TEMPERATURE SENSOR KIT, see

INSTALLATION INSTRUCTION (1531-RPM 603 339).

CA

18

Factory test

20

-48 VDC

22
24

26
28
30
32

10
12
14
16

18
20
22
24

26
28
30
32

ALARM
ALARM

External
sensor 3

0 V

Not used
Not used

RTS
DTR

DCD
CTS

RTS
DTR

DCD
CTS

RTS
DTR

DCD
CTS

Polarity
independent
input

only this V.24
port is active
on the AUX3
board

red
yellow
green

red

Cold
start
strap

BS2 9727

CPU-D

R1A

ROF1575118

Audio
Audio

ALARM
(out)

0 V

External
sensor 1

0 V

External
sensor 2

0 V

TXD
0 V

RXD
DSR

TXD
0 V

RXD
DSR

TXD
0 V

RXD
DSR

A B

A

Insert PROM "RYS 102 1x9/ xx
Insert PROM "RYS 102 1x8/ xx

B

r additional CIL storage capacity up to two additional
battery backup RAMs can be added.

The ALARM input is optically isolated and the voltage
has to be between 20 - 60 VDC.

The ALARM output is equipped with an open collector
transistor with a capacity of 20 mA at 12 VDC
(Maximum 14 VDC).

Use the following prefabricated cables to connect the
peripheral data equipment to CPU-D_ and AUX_:

• PC is TSR 902 0448/1

• printer is TSR 902 0476/1

• modem is TSR 902 0466/1

INSTALLATION INSTRUCTION

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24(46)

6.12 CPU-D4 (ROF 157 5124/_)

FW PROMS

RYS 102 533/1

RYS 102 533/2

Connections on the CPU-D4

Similar tothe previous versionsthis board providesthe
V.24 interfacesbut additionallythe RS-485interface for
longer ranges. With the software key (FECU)
KDU BS 130 06/_ new functionalities can be ac­cessed.

red
yellow
green

alarm relay

B18

B22

B20

CA

B

ROF1575130

BS2 9727

CPU

R1A

Audio
Audio

red
yellow
green

RTC

FECU
connector

ALARM
(out)

0 V

External
Temp1

0 V

External
Temp2

0 V

18

Factory test

20

-48 VDC

22

ALARM (in)

24

0 V

26

External
Temp3

28

0 V

30

Not used

32

Not used

Battery RAM

Battery RAM

st

1

Battery RAM

KDY BS 101 02/1

Insert PROM "RYS 102 xx1/ x"

A

Insert PROM "RYS 102 xx2/ x"

B

Insert PROM "RYS 102 xx3/ x"

C

Battery RAM

rd

nd

3

2

SW PROMS

C B A

To put the board in operation mount the system soft­ware PROMsin the appropriate positions.The number
of battery RAMs mounted on the CPU-D4 board is
functionality dependent.

red

Coldstart
strap

TXD
0 V

RXD
DSR

TXD
0 V

RXD
DSR

TXD
0 V

RXD
DSR

RTS

10

DTR

12

DCD

14

CTS

16

+

RTS

18

-

DTR

20

+

DCD

22

-

CTS

24

RTS

26

DTR

28

DCD

30

CTS

32

Transmit
RS 485

loop

Receive
RS 485

To connect the RS-485 data interface use plug
RNV 321 01 02 be sure to loop RTS with CTS other-

INSTALLATION INSTRUCTION

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wise data is lost if printer is OFF. The range of the in­terface is up to 1200m.

Several converters may be used but with the following
successful tests were accomplished:
IC-485SI from ARP DATACON and
232<->485/422 Converter Plus IC-109AE from Black
Box Corp.

6.12.1 Feature Enabling Control Unit (FECU)

Connecting this plug activates the appropriate applica­tions and features asordered depending on the FECU
index number. If no plug is connected only a limited
Version 3.0 system functionality is available. The indi­ces 2 to 10 always include the Basic Version 3 func­tionality (index 1).

25(46)

For detailed information of the featuresenabled by the
different FECUs refer to 15534-ASB 150 02 Uen

FACILITY DESCRIPTION GENERAL.

FECU number Functionality Version 3.1

KDU BS 130 06/1 Basic Version 3.0 functionality
KDU BS 130 06/2 + std. digital networking for max.

32 interfaces
KDU BS 130 06/3 + std. digital networking
KDU BS 130 06/4 + full. digital networking for max.

32 interfaces
KDU BS 130 06/5 + full. digital networking
KDU BS 130 06/6 + CTI
KDU BS 130 06/7 + CTI and std. digital networking

for max. 32 interfaces
KDU BS 130 06/8 + CTI and std. digital networking
KDU BS 130 06/9 + CTI + full. digital networking for

max. 32 interfaces
KDU BS 130 06/10 + CTI + full. digital networking for

unlimited number of interfaces

INSTALLATION INSTRUCTION

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6.13 ELU-A and ELU-D

Connection field6 at frontof ELU-D(3)and ELU-A

The relevant boards are:

• ELU-D (ROF 1575 116/_)

26(46)

• ELU-A (ROF 1575 114/1)

• ELU-A2 (ROF 1575 114/2)

• ELU-D3 (ROF 157 5130/_)

This switch is mount-

RYS 102 532/2

RYS 102 532/1

ON

3 4

ed for future use

1 2

(LA16)
(LB16)
(LA18)
(LB18)

(LA20)
(LB20)

(LA22)
(LB22)

(LA24)
(LB24)

(LA26)
(LB26)

(LA28)
(LB28)

(LA30)
(LB30)

LA0
LB0
LA2
LB2

LA4
LB4

LA6
LB6

LA8
LB8

LA10

LB10

LA12
LB12

LA14
LB14

02
04
06
08

10
12
14
16

18

20
22

24
26

28
30
32

C

A

LA1
LB1
LA3
LB3

LA3
LB5
LA7
LB7

LA9
LB9
LA11

LB11
LA13
LB13

LA15
LB15

(LA17)
(LB17)
(LA19)
(LB19)

(LA21)
(LB21)
(LA23)
(LB23)

(LA25)
(LB25)
(LA27)

(LB27)
(LA29)
(LB29)

(LA31)
(LB31)

Extension Line
connector to
terminal
equipment

View of the ELU-D3 board

The connections in field 4 are in brackets (only on
ELU-D3 for individuals 16 to 31)

On the first ELU-D_ board in the system the first three
extension positions should be used to connect the
OPERATOR telephones.

On sub-equipped ELU-A and ELU-D_ boards the con­nection for extensions 8...15 (32) are not mounted.

INSTALLATION INSTRUCTION

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27(46)

6.14 VMU-HD (ROF 157 5126/1)

To install unpack the VMU-HDboard with the mounted
hard disk.The Flash disksare availablewith a capacity
of 60 MB. Removethe transport protection forthehard
disk and keep it in case of re-shipment e.g. factory re­pair. Install and configure the VMU-HD in the cabinet
according to the stipulations in 1537-ASB15002Uen

START OF OPERATION.

Note: The VMU-HD will not start up without internal

directories created on the hard disk.

The DIP-switch is shown with
both contacts in OFF position

(factory setting)

ON

1 2

990

990/2990/1 FUNCTION

OFF

ON

Structure of directories on hard disk or Flash card

\Info0 \message2 \anno0
\Info1 \message3 \anno1

Removal of hard disk or Flash card

To remove the hard disk take out the board from the
system. Disengagethehard disk with lever and pull

out the hard disk.

ON or
OFF

OFF

ON

\message4 \anno2
\message5 \anno3

16 channels, no register function

8 channels with MFC detection

and DTMF / Tone receiver

8 channels with MFE detection

and DTMF / Tone receiver

\annoF

A

6.15 VMU-D (ROF 157 5117/1)

PCMCIA Hard/
Flash disk
type III and II

A

Press button to disengage the hard disk and

Press button to disengage the hard

A

take it out.

disk and take it out.

DIP switch on VMU-HD

DIP switch 990 selects whether register function is en­abled or not.

Limitations:

Only one VMU-HD can be mounted per cabinet and
just one type either VMU-HD or VMU-D can be in­stalled in a system.

The VMU-D has no switches, but is equipped with a
back up battery, RNV 991 942/001 to prevent loss of
data in case of power failure. Install the battery to con­nection field4. beforethe exchange isstarted. Forsafe
operation, replace this battery periodically every five
years in accordance with document MAINTENANCE

INSTRUCTION (1541-ASB 150 02 Uen).

Installation of battery back-up on VMU-D

Connection

field 4

Battery RNV 991 942/001

INSTALLATION INSTRUCTION

Subject responsible

DocumentnumberPrepared

1531-BDV BS 101 01 Uen

Doc respons/Approved Checked Reference

Date Rev

1998-05-29

L

28(46)

7 INTEGRATED CORDLESS

The Integrated Cordless (IC) is a digital cordless tele­phone solution complying to the DECT standard pro­viding wireless connection for up to 108portables with
the A-protocol and 210 portables in GAP-protocol ap­plications. Several components comprise a complete
system.

After the system has been physically installed use
RASC and the Cordless System Manager (CSM) for
initialization, maintenance, updating, fault finding and
when possible to recover the PBX from errors. The
CSM is orderable under LZYNB 201 01 R6A or higher
forthe A-protocol and LZYNB201 05 R1B orhigher for
GAP applications.

7.1 Board Descriptions

7.1.1 IC-Control Unit2 (IC-CU2)

The IC-CU2 is the control board supporting the DECT
GAP-protocol. The IC-CU2 includes 8 voice channel
units and is equipped with 4 BSs interfaces.

The wiring distance with remote power feeding to the
BSs using only the serial communication wires SC0
and SC1 is limited to 400m. For line lengths up to
900m additional Express Power feeding Pairs (EPP)
need to be wired. The maximum wire length between
BS (fed locally) and IC-CU2 is only data limited and
may reach up to 900 meters.

The board offers the following connections:

• the Cordless System Manager (on a PC)

• a printer to log errors

• 4 Base Stations

• the Feature Enabling Control Unit (FECU).

7.1.2 Feature Enabling Control Unit (FECU)

plug is available for various numbers of cordless tele­phones. For up to 8 portables no plug is required.

FECU number Number of Portables

KDU 130 05/1 16
KDU 130 05/2 24
KDU 130 05/3 32
KDU 130 05/4 48
KDU 130 05/5 64
KDU 130 05/6 108
KDU 130 05/7 210 (only with IC-CU2)

7.2 Traffic capacity

The traffic capacity of the Cordless part of the PBX is
mainly determined by the IC-CU_ and in exceptional
cases also by the Base Stations. The IC-CU can han­dle a maximum of 56 simultaneous calls and the IC­CU2 can handle up to 60 simultaneous calls. Each
Base Station has a capacity of 8 simultaneous calls.

The traffic capacity of the IC-CU_ is determined by:

• the Grade Of Service (GOS) required by the
customer

• the number of speech circuits available, with a
limit of 64.

The Grade Of Service is the probability that acall is re­jected because of system congestion. The customer
has to indicate which Grade Of Service is acceptable.
A Grade Of Service of 1%, or 0.01, means an average
of 1 lost call in every 100 calls. The IC-CU2 is
equipped with a SPU providing 8 speech circuits.

The two parametersmentioned above (GOS and the8
speech circuits) and the totalamountof traffic (Erlang)
that is required, are related to each other. The table
below shows the capacity at a required GOS.

This plug determines which maximum number of port­ables are allowed to be connected to the system. This

Prepared

Subject responsible

INSTALLATION INSTRUCTION

Documentnumber

29(46)

1531-BDV BS 101 01 Uen

Doc respons/Approved Checked

Date

Rev

Reference

1998-05-29 L

Practically, this table is used to calculate from a given GOS and Erlang value the number of portable users.

IC-CU2

1

Speech Grade of service (GOS)
circuits

2% 1% 0.5% 0.1%

8 3.6 3.2 2.7 2.1

For the calculation it is necessary to estimate the time the portables actually make calls. The table below shows the
Erlang value depending on the estimated mean call-minutes fora portable telephone. These values may be different
between departments depending on their activities. These values multiplied by the number of portables result in a
traffic capacity that has to be provided.

mErlangMinutes

25015
30018
50030
75045

per hour

mErlangMinutes

per hour

503
1006
1509
20012

Example:

A customer ordering a system with 24 portable telephones. He estimates that each portable generates 200 mE
each in average. These values requirea system with a traffic capacityof3,6 E (0,15x24). With an acceptedGOS of

2.0% the traffic capacity can be met.

7.2.1 Traffic Capacity of Base Stations

A Base Station, having 8 channels available, has an Erlang value of 2.7 with a GOS of 0.5%. This means that each
Base Station can serve 18 portables, assuming each portable generates 150 mE during busy hour or 13.5 portables
generating 200 mE each.

Example:

Assuming a full coverage in a building canbeachieved with 2 Base Stations means that 20portables generate
together 20 x 0.150 = 3 E. Every Base Station has a traffic capacity of 2.7 Erlang. To have a sufficient
coverage two Base Stations covering the area of the busiest part of the company are needed.

Practically, the total capacity offered by the cordless network is generally more than sufficient, but this is from an av­erage point of view. In certain places, traffic demands may vary such that locally the network is often blocked, or has
a lower GOS than required. For instance a purchase department may easily generate 300 mE per Portable during
busy hour, thus, when e.g. with 6 persons giving a very high load on the Base Station close by. It may be necessary
to add aBase Station in this areatohave enough capacityfor others to callas well. Also think ofe.g. canteens during
lunch time etc.

INSTALLATION INSTRUCTION

Prepared

Subject responsible

Documentnumber

1531-BDV BS 101 01 Uen

Doc respons/Approved Checked

Date

1998-05-29 L

7.3 IC-CU2 (ROF 157 5131/_) (GAP-Protocol)

LEDs

Rev

30(46)

Reference

RP error
Individual blocked

Individual busy
CPU error/DCT error log
SPU error

DECT Sync port

SYNCH A IN
SYNCH B IN

SYNCH A OUT
SYNCH B OUT

CLU error

0 V
0 V

(KDU 130 05/__)

External power input
via front connector (to enable

set switch 1and 2 to OFF)

to power supply BML 351 048

Express Power feeding to base stations

(-)

To BS 4

EPP

TSR BS 101 12/1500

AC

18
20

22

(-)

To BS 3

EPP

EPP

EPP

(+)

(+)

red
yellow
green
green

red
red

V0
V1

(-)
(+)

BS2 9727

IC-CU2

R1A

ROF1575131/1

Switch 1 and 2 must have the
same position. ON (default)
48V from the backplane. OFF
activatesexternal DC inputand
disconnects the backplane.

RYS 102 531/1

DECT

synchronization

RYSNB 101 19

RYS 102 531/2

+

RYS 102 553/1

ON

1 2

ON

RYS 102 554/1

RYSNB 101 20

24

To BS 2

EPP

26

(-)

28

To BS 1

EPP

30

(-)

32

Serial communication to base stations

AC

To BS 4

SC0

02

04
06

To BS 3

SC0

08

To BS 2

SC0

10

12
14

To BS 1

SC0

16

EPP

EPP

(+)

(+)

SC1

SC1

SC1

SC1

RYSNB 101 23/2

Maintenance port

TXM
0 V

RCV
n.c.

TXM
0 V

RCV
DSR

18
20
22
24

26
28
30
32

RTS
DTR

PRINTER

DCD

PORT

CTS
RTS

DTR

MAINTENANCE

DCD

PORT

CTS

remove paper
insulation

Prepared

Subject responsible

INSTALLATION INSTRUCTION

Documentnumber

31(46)

1531-BDV BS 101 01 Uen

Doc respons/Approved Checked

Date

Rev

Reference

1998-05-29 L

7.4 Base Station (KRCNB 201 03/_ and KRCNB 301 01/_)

The Base Station (BS) enables radio communication between the Integrated Cordless system and the portable
telephones. The communication via two2B+D interfaces, requires two twisted pair cables. Both interfaces provide in
total eight 32 kbit/s speech paths between a BS and IC-CU2, enabling a BS to handle eight simultaneous calls. The
BS is connected to the IC-CU2 via two wire pairs called serial communication wires (SC0 & SC1) carrying up to 8
simultaneousdigitalvoiceconnectionsandthecentralpowerfeeding.Apart fromdatacommunicationthesetwotwisted
pairs are alsobe used to distribute power to theBSs. Two additional pairs canbe wired to provide agreater powering
range. There are three methods to power BSs:

1. centrally via backplane (with or without EPP)

2. centrally via external input (with / w.o EPP)

3. via local power supply (optional).

With the first and second methods power is distributed via the IC-CU2 to the BS. The cable length between BS and
IC-CU2 depends on thenumber wires used for power feeding,the type of cable and environmentalnoise. In the third
case (local feeding),BSs are powered by anAC-adapter or another power source which isnot routed via the cabinet.

The number of BSs used in a system depends on the area to be covered and the traffic density. Typical in-house
coverageis upto 30meter radius.In practicethecell sizemayvary between10 metersindoorsin worstcasesituations,
up to 300 meters outdoor in free space.

The BS has two main functions:

• to modulate a carrier with the digital encoded information (TDMA frame directed to portable)

• to demodulate a modulated carrier (TDMA frame received from portable).

A special cover (KRY NB 101 01) is available to mount the BS (KRCNB 201 03) outdoors providing splash proof
housing and water tight sealings for the wiring.

7.4.1 Base Station Planning

The major task when providing a wireless service is to estimate the number of BSs and to find their most suitable
location. A number of factors tend to limit the range of a BS like the materials the wall is composed of or the location
and size of machines, furniture, air-conditioning systems, elevators etc. This results in unexpected reflections or
absorption of radio waves. Generally BSs should not be located on outer walls, except if the outdoor area has to be
covered as well, as this reduces the area actually covered. All of these unpredictable influencing factors makes it
extremely difficulttodefine rules for how to cover an areawith a suitable number of BSs.In difficult environments the
use of a site survey tool (LTT NB 101 01/_) is recommended.

Establish a Base Station plan for the installation site to determine the best location for the BSs.

Base Station aerial range

• Inan officeenvironment in asteel concretebuilding up to30 mindiameter canbe coveredand including,
under normal conditions, the neighbouring floors.

• Production halls up to 200 m in diameter are covered but ranges can be less if bulky machines, cranes
etc. are part of the interior.

• Outdoor ranges can be up to 300m.

When installing a BS, position it, then walk around to determine cell coverage area either by listening to the speech
quality- whethermutesor cracklingsounds areheardin theportable -or measuretheRQIindicator usingtheportables
Service Display facility (see FAULT TRACING 1545-ASB15002Uen).