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Nokia Intratalk GSM 1900 BTS

User Manual, Version 6

467255A_606_NOLSP

DN99596449 © Nokia Corporation 1 (50)

Issue 9 en Nokia Proprietary and Confidential

Interface cabling

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Interface cabling

2 (50) © Nokia Corporation DN99596449

Nokia Proprietary and Confidential Issue 9en

The information in this documentation is subject to change without notice and describes onlythe product defined in the introduction of this documentation. This documentation is intendedfor the use of Nokia's customers only for the purposes of the agreement under which thedocumentation is submitted, and no part of it may be reproduced or transmitted in any form ormeans without the prior written permission of Nokia. The documentation has been prepared tobe used by professional and properly trained personnel, and the customer assumes fullresponsibility when using it. Nokia welcomes customer comments as part of the process ofcontinuous development and improvement of the documentation.

The information or statements given in this documentation concerning the suitability, capacity,or performance of the mentioned hardware or software products cannot be considered bindingbut shall be defined in the agreement made between Nokia and the customer. However, Nokiahas made all reasonable efforts to ensure that the instructions contained in the documentationare adequate and free of material errors and omissions. Nokia will, if necessary, explain issueswhich may not be covered by the documentation.

Nokia's liability for any errors in the documentation is limited to the documentary correction oferrors. NOKIA WILL NOT BE RESPONSIBLE IN ANY EVENT FOR ERRORS IN THISDOCUMENTATION OR FOR ANY DAMAGES, INCIDENTAL OR CONSEQUENTIAL(INCLUDING MONETARY LOSSES), that might arise from the use of this documentation orthe information in it.

This documentation and the product it describes are considered protected by copyrightaccording to the applicable laws.

NOKIA logo is a registered trademark of Nokia Corporation.

Other product names mentioned in this documentation may be trademarks of their respectivecompanies, and they are mentioned for identification purposes only.

Copyright © Nokia Corporation 2002. All rights reserved.

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Hereby, Nokia Corporation, declares that this product is in compliance with theessential requirements and other relevant provisions of Directive: 1999/5/EC.

The product is marked with the CE marking and Notified Body number according to the

Directive 1999/5/EC

FCC FCC §15.21 - Information to user - This product is used as an intentional radiated

equipment and any changes or modifications on the equipment without any approval

by Nokia could void the user's authority to operate the equipment.

FCC §15.105 - Information to user - This equipment has been tested and found to

comply with the limits for a Class B digital device, pursuant to part 15 of the FCC

Rules. These limits are designed to provide reasonable protection against harmful

interference in a residential installation. This equipment generates, uses and can

radiate radio frequency energy and, if not installed and used in accordance with theinstructions, may cause harmful interference to radio communications. However, there

is no guarantee that interference will not occur in a particular installation. If this

equipment does cause harmful interference to radio or television reception, which can

be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

0523

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Contents

Contents 5

List of tables 6

List of figures 7

1 Introduction 111.1 Torque settings 11

2 Interfaces 132.1 Basic cabinet interfaces 132.2 Extension cabinet interfaces 14

3 Earthing 173.1 Earthing basic cabinet 173.2 Earthing extension cabinet 19

4 Power supply 214.1 AC power supply 214.1.1 Connecting AC power to Basic cabinet 214.1.2 Connecting AC power to Extension cabinet 234.2 DC power supply 254.2.1 Connecting DC power to Basic cabinet 254.2.2 Connecting DC power to Extension cabinet 274.3 Nokia EmPower support cabinets 294.3.1 Nokia EmPower 1100 29

4.3.2 Nokia EmPower 1900 294.3.3 Power System Management 30

5 Alarms, buses and clocks 315.1 Alarm cables 315.2 Bus cable 335.3 Clock cables 34

6 Customer alarms and controls and Extratalk alarms 376.1 External alarm inputs and control outputs 37

7 A-bis interface 41

7.1 PCM, HDSL and ISDN A-bis interfaces 437.1.1 Cable between ISDN interface and external network terminal 447.2 75-ohm A-bis interfaces 457.3 Operation and maintenance interface in A-bis board 46

8 Antenna connections 47

References 49

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List of tables

Table 1. Basic cabinet top interfaces 14

Table 2. Extension cabinet top interfaces 15

Table 3. Customer controls 1-6 and alarms 1-12, 37-pin D-connector 38

Table 4. Customer alarms 13-24, 37-pin D-connector 39

Table 5. Extratalk alarms, 37-pin D-connector 39

Table 6. Pin configuration of line and synchronisation connectors 44

Table 7. Pin configuration of ISDN connectors 45

Table 8. Pin configuration of TRU1 Nokia O&M interface 46

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List of figures

Figure 1. Basic cabinet top Interfaces 13

Figure 2. Extension cabinet top interfaces 15

Figure 3. Cabinet earthing 18

Figure 4. Connecting earth cable between Basic and Extension cabinets 20

Figure 5. Connecting AC power 23

Figure 6. Connecting AC power to Extension cabinet 24

Figure 7. Connecting DC power supply 27

Figure 8. Connecting DC power Extension cabinet 28

Figure 9. Routing alarm cables to the wiring board 32

Figure 10. Connecting cables to the wiring board 33

Figure 11. Connecting the bus cable connections 34

Figure 12. Taking clock cables to the Basic cabinet 35

Figure 13. Connecting clock cables ends 36

Figure 14. A-bis connectors 42

Figure 15. RJ-45 Connector pin configuration (front view) 45

Figure 16. TRX slot numbering and antenna configuration 48

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Summary of changes

Version 8, 2nd August 2000.

Version 9, 16th November 2001:

• Section 4.1.2, connecting AC power to the Extension cabinet, wiring errorcorrected

• Added section 4.3, covering EmPower 1100 and EmPower 1900

• Various editorial changes carried out

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Introduction



Note

1 Introduction

Read carefully Reference [1] in this User Manual before commencing theinstallation, and implement where necessary.

This document details the cabling of the Nokia Intratalk GSM 900, GSM 1800and GSM 1900 top interfaces.

Use the installation check list in Reference [3] to record the completion of tasksdetailed in this document.

1.1 Torque settings

Tighten the 7/16 connectors to 25 Nm (18.4 ft-lb) and the SMA connectors to 1Nm (0.75 ft-lb) torque.

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Interfaces



2 Interfaces

2.1 Basic cabinet interfaces

The Basic cabinet top interfaces are shown in Figure 1 and in Table 1.

Figure 1. Basic cabinet top Interfaces

L2

L2

N

N

L1

L1

+

+

-

-

DN99596452

A-bis Connectors AC/DC PowerSupply Filter Module

Earthing Bar

TX/RX Antennas RX Antennas

Customer Controls 1-6and Alarms 1-12

Customer Alarms 13-24Support Alarms

13 MHzTest

MMITest

FCLKTest

DMR1 IN+DMR1 OUT-

DMR2 IN+

PE

DMR2 OUT-

STM ANTConnector

9

11

10

3

6

12

4

5 7

8 7 12

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2.2 Extension cabinet interfaces

Nokia Intratalk Extension cabinet top interfaces are shown in Figure 2 and inTable 2.

Table 1. Basic cabinet top interfaces

Number in Figure Interface connector Connector type1 Earthing (grounding) Earthing bar

2 AC/DC Power Supply Terminal blocks

3 TX/RX-antennas 7/16 connector, female

4 STM Antenna Connector N connector, female

5 RRI (DMR) Antenna

Connectors

N connector, female

6 A-bis 75-ohm Connectors

A-bis 100/120-ohm

Connector

Nokia O&M/ Connector

BNC connector, female

9-pin D type, female


7 Customer Alarms and

Controls Connectors


8 Extratalk Alarms

Connector


9 13MHz Test Connector BNC connector, female

10 FCLK Test Connector BNC connector, female

11 MMI Test Connector 9-pin D-type, female

12 RX Antenna Connectors

(with AFT TX/RX Antenna

Connectors)

7/16 connector, female

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Interfaces



Figure 2. Extension cabinet top interfaces

L2

L2

N

N

L1

L1

+

+

-

-

Cover Panels Earthing Bar

TX/RX Antennas

PE

AC/DC Power Supply(Filter Module)

Wiring BoardCover Plate

A-bis BoardCover Plate

PE

1

23

4

Optional RxAntenna Connection

DN99596476

Table 2. Extension cabinet top interfaces

Number in Figure Interface connector Connector type

1 Earthing (grounding) Earthing busbar

2 AC/DC Power Supply

(Filter module)

Terminal blocks

3 TX/RX Antenna

Connectors


4 Optional RX Antenna

Connectors (with AFT

TX/RX Antenna

Connectors)


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Earthing



WARNING

Note

3 Earthing

Make sure that the site mains AC power switch is turned OFF beforeconnecting any cables to the cabinet.

Earth (ground) the cabinet before connecting any other cables.

Remove the cabinet roof and the filter module cover and replace them after theinterface connections.

3.1 Earthing basic cabinet

The cabinet earth connector is a cable shoe with the cable cross-section of 4 AWG

(25 mm2 approximately). There is a pre-installed earth cable between the filtermodule and the earthing busbar on the cabinet top as shown in Figure 3.

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Figure 3. Cabinet earthing

Earth the cabinet as follows:

1. Check that the pre-installed earth cable between the filter module and theearthing busbar on the cabinet top is correctly installed. See Figure 3.

2. Strip 1 cm off the main earth cable.

3. Remove the cable shoe from the earthing bar with a 5 mm Allen key. SeeFigure 3.

4. Insert the stripped end of the main earth cable into the cable shoe and crimpwith a crimping tool.

5. Reconnect the cable shoe onto the earthing bar.

6. Connect the main earth cable to the site earth point.

Pre-installed Earth

L2

L2

N

N

L1

L1

+

+

-

-

DN99596491

Main Earth

PE

PE

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Earthing



3.2 Earthing extension cabinet

The Extension cabinet is earthed via the Basic cabinet. The interconnecting cable

with cable shoes at both ends is delivered with the Extension cabinet. The earthconnection between the Basic and Extension cabinets is located on the cabinettop. There are pre-installed earth cables between the filter module and theearthing busbar on both cabinet tops as shown in Figure 4.

Earth the Extension cabinet as follows:

1. Check that the pre-installed earth cables between the filter module and theearthing busbar on both cabinet tops are correctly installed. See Figure 4.

2. Unscrewthenuts that hold down the pre-installed earth wires. See Figure 4.

3. Place the ring shoes at both ends of the interconnecting cable (992645_)around the studs and secure with the nuts as shown in Figure 4.

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Figure 4. Connecting earth cable between Basic and Extension cabinets

BasicExtension

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

Main Earth

Pre-installed EarthPre-installed Earth

Earth Cable

Earth Cable

DN99596519

Pre-installed Earth

Earth Cable

Pre-installed Earth

Main Earth

PE PE

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Power supply



WARNING

Note

4 Power supply

Mains AC voltage! Make sure that the site mains AC power switch is turnedOFF before connecting any cables to the cabinet!

Any person connecting the power must be fully authorised to do so.

Remove the cabinet roof and the filter module cover and replace them after theinterface connections.

The cabinet can use either AC (230 V) or DC (48 V/60 V) input power supply.

4.1 AC power supply

4.1.1 Connecting AC power to Basic cabinet

The maximum cross-section of a cable that can be connected to the AC terminal

block is 6 mm2. The minimum cable cross-section is 2.5 mm2. Dimension of thecable cross-section must meet the national legislation. See Reference [2] for themaximum current.

Connect the AC power to the cabinet as follows:

1. Check that the cabinet is properly earthed.

2. Cut the three wires of the AC power cable so that the earth wire is about 2cm longer than the other two wires. Strip 1 cm off the wires.

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3. Put a ring shoe on the end of the earth cable.

4. Unscrew the nut that holds down the pre-installed earth wire. See Figure 5.

5. Place the ring shoe around the stud and secure with the nut.

6. Remove the plastic shields from the [N] and [L1] terminals and loosen thescrews of the terminals.

7. Insert the neutral wire to the [N] terminal and secure the wire to theterminal block.

8. Insert the live wire to the [L1] terminal and secure the wire to the terminalblock.

9. Use the cable clamp to secure the power cable.

10. Put back the plastic shields to [N] and [L1] terminals.

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Power supply



Figure 5. Connecting AC power

4.1.2 Connecting AC power to Extension cabinet

The interconnecting AC power cable (991530_) is delivered with the Extensioncabinet.

Live

Earth

AC Power Cable

DN99596522

Neutral

L2

L2

N

N

L1

L1

+

+

-

-

PE

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

PE

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Figure 6. Connecting AC power to Extension cabinet

Connect the AC power from the Basic cabinet as follows:


2. Remove the plastic shields from the [N], [L1] and [PE] terminals andloosen the screws of the terminals.

BasicExtension

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

AC Power Cable

Main EarthAC Cable

Earth Cable

DN99596534

AC Cable

PEN

L1

NL1

PE

PE PE

PE PE

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Power supply



3. Insert the protected earth wire of the AC power cable to the [PE] terminaland secure the wire to the terminal block.

4. Insert the neutral wire of the AC power cable tothe [N] terminal and secure

the wire to the terminal block.

5. Insert the live wire of the AC power cable to the [L1] terminal and securethe wire to the terminal block.


7. Put back the plastic shields to the [N], [L1] and [PE] terminals.

Connect the AC power to the Extension cabinet as follows:

1. Check that the pre-installed earth wire is properly connected.

2. Unscrew the nut that holds down the pre-installed earth wire.

3. Place the ring shoe at the end of the interconnecting AC power cablearound the stud and secure with the nut.

4. Remove the plastic shields from the [N] and [L1] terminals and loosen thescrews of the terminals.

5. Insert the neutral wire of the AC power cable tothe [N] terminal and secure

the wire to the terminal block.

6. Insert the live wire of the AC power cable to the [L1] terminal and securethe wire to the terminal block.


8. Put back the plastic shields to the [N] and [L1] terminals.

4.2 DC power supply

4.2.1 Connecting DC power to Basic cabinet

The maximum cross-section of a cable that can be connected to the DC terminal

block is 25 mm2. The minimum cable cross-section is 10 mm2. Dimension of thecable cross-section must meet the national legislation. See Reference [2] for themaximum current.

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Connect the DC power to the cabinet as follows:


2. Strip 1 cm off the [+] and [-] wires.

3. Remove the plastic shield from the [+] and [-] terminals and loosen thescrews of the terminals. See Figure 7.

4. Insert the negative wire to the [-] terminal and secure the wire to theterminal block.

5. Insert the positive wire to the [+] terminal and secure the wire to the

terminal block.

6. Use the cable clamp to secure the wires.

7. Put back the plastic shields to the [-] and [+] terminals.

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Power supply



Figure 7. Connecting DC power supply

4.2.2 Connecting DC power to Extension cabinet

The interconnecting DC power cables (black [+] cable 991528_ and blue [-] cable991871_) are delivered with the Extension cabinet.

black (+)

Power Cable (-)

Power Cable (+)

dark blue (-)

(+)

(-)

DN99596558

L2

L2

N

N

L1

L1

+

+

-

-

PE

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

PE

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Interface cabling



Figure 8. Connecting DC power Extension cabinet

Connect the DC power between the Basic and Extension cabinets asfollows:

1. Repeat this procedure at both cabinet tops.

2. Check that the cabinet is earthed properly.

BasicExtension

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

DC Power Cables

Main EarthDC (+) Cable

Earth Cable

DN99596561

DC (+) Cable

-

+

DC (-) Cable

PE PE

DC (-) Cable

PE PE

+-

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Power supply



3. Remove the plastic shield from the [+] and [-] terminals and loosen thescrews of the terminals. See Figure 8.

4. Insert the [-] cable to the [-] terminal and secure the wire to the terminal

block.

5. Insert the [+] cable to the [+] terminal and secure the wire to the terminalblock.

6. Use the cable clamp to secure the wires.

7. Put back the plastic shields to the [-] and [+] terminals.

4.3 Nokia EmPower support cabinets

The Nokia EmPower 1100 and EmPower 1900 indoor cabinets are used with theNokia Talk-family GSM Intratalk Base Transceiver Stations (BTS). In normaloperation the rectifiers deliver power to the load and simultaneously maintain thebatteries in a fully charged state.

During a mains power failure, the rectifiers are shut down and the batteries deliverthe load power. When the mains input is restored, the rectifiers start upautomatically to deliver the load power and recharge the batteries.

Nokia EmPower indoor cabinets also contain alarm monitoring and remotereporting for system maintenance purposes.

Nokia’s Power System Management (PSM) is a local and remote managementsystem used with Nokia EmPower support cabinets. All Nokia EmPower 1100and EmPower 1900 indoor cabinets are supplied complete with a Nokia PSMinterface adapter (Q1IA/Q1A) installed (see Section 4.3.3).

4.3.1 Nokia EmPower 1100

The EmPower 1100 indoor cabinets deliver 8.8 kW of steady state power with anoption to upgrade to 17.6 kW with a separate Extension cabinet.

For further details of how the EmPower 1100 operates, refer to the EmPower

1100 User Manual, see Reference [7].

4.3.2 Nokia EmPower 1900

The Nokia EmPower 1900 indoor cabinets deliver 7.6 kW of steady state powerwith an option to upgrade to 15.2 kW with a separate Extension cabinet.

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For further details of how the EmPower 1900 operates, refer to the EmPower

1900 User Manual, see Reference [8].

4.3.3 Power System Management

Nokia’s Power System Management (PSM) is a local and remote managementsystem for controlling and managing Nokia Site Support Systems (SiSS) andBattery Back-Up Units (BBUs) that support Nokia Talk-Family BTS.

For further details of how the PSM operates, refer to the PSM User Manual, seeReference [6].

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Alarms, buses and clocks



5 Alarms, buses and clocks

When an Extension cabinet is used with the Basic cabinet, the cabinets must beconnected with alarm, bus, and clock cables.

5.1 Alarm cables

The three alarm cables with the proper connectors at the cable ends are suppliedto the customer with the Extension cabinet. The cables are taken inside the Basiccabinet and connected to the wiring board on the top of the cabinet.

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Figure 9. Routing alarm cables to the wiring board

Connect the alarm cables as follows:

1. Take the alarm cables inside the Basic cabinet through the opening on thecabinet wall.

2. Place the cables on the hook shown in Figure 9.

3. Remove the wiring board cover by unscrewing the eight screws on the topof the cabinet. Be careful not to detach the connectors already connected tothe wiring board.

4. Take the alarm cable ends through the wiring board hole on the top of thecabinet as shown in Figure 9.

Wiring Board

Alarms Cables

Wiring Board Cover

Hook

DN99596573

Extension Cabinet Basic Cabinet

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5. Connect the alarm cable connectors to the wiring board connector slotsaccording to the cable numbers as shown in Figure 10.

6. Screw the wiring board back to its place with the eight screws.

Figure 10. Connecting cables to the wiring board

5.2 Bus cable

To establish the bus connection connect the bus cable connectors together. Thecables for the connection are delivered with the cabinets.

Connect the bus cable connectors together as follows:

1. Remove the terminator from the bus cable connector in the Basic cabinet.

X3

X2

X1

472851 472

751 473651

abc

1

abc

a

bc

DN99596585

1

1

32

32

32

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Interface cabling



2. Take the bus cable end from the Basic cabinet to the Extension cabinet viathe opening on the cabinet wall.

3. Connect the connectors together as shown in Figure 11.

Figure 11. Connecting the bus cable connections

5.3 Clock cables

The two clock cables are delivered with the cabinets. The cable ends in the Basiccabinet are terminated with 120-ohm terminators.

DN99601544

Extension Cabinet Basic Cabinet

Bus CableConnector660/660

Bus CableConnector660/063

660063

660660

Terminator toBus Cable Connector

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Connect the clock cable connectors as follows:

1. Take the clock cable ends from the Basic cabinet to the Extension cabinetvia the opening on the cabinet wall.

Figure 12. Taking clock cables to the Basic cabinet

2. Remove the terminators from the cable ends coming from the Basiccabinet.

3. Connect the cable ends together as shown in Figure 13.

Clock CableConnectors

DN99601556

Clock CableConnectors

Basic CabinetExtension Cabinet

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Interface cabling



Figure 13. Connecting clock cables ends

BNO-AdapterBNO-Straight Plug

Cable Connector

120 ohm Terminatorto Cable Connector

BNO-Straight Plug

Cable Connector

DN99601568

656/13 MHz657

657/2 MHz657

657/2 MHz062

656/13 MHz062

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Customer alarms and controls and Extratalk alarms



Note

Note

6 Customer alarms and controls andExtratalk alarms

6.1 External alarm inputs and control outputs

The external alarm inputs and control outputs are reserved for customer-specificpurposes. The customer alarm interface is located on the top of the cabinet. SeeFigure 1.

The alarm inputs and control outputs selected as in use are recorded in the HWdatabase with the MMIDATA. The user can define the naming, polarity andseverity of the inputs and outputs in the database (severity concerns only inputs).See Reference [5] for details.

Test the customer-specific alarms by activating them and use the MMI to monitorthe changes in the alarm status

The external alarms and controls are defined in MMI DATA.

Check the mapping of the external alarm inputs and control outputs according toTable 3 and Table 4. Check the Extratalk alarms according to Table 5.

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Interface cabling



Note

In cabinet versions 465277A.203 and earlier, pins 20 to 25 carry DGND. Startingfrom cabinet version 465277A.204, these pins carry +5V_BCF.

Table 3. Customer controls 1-6 and alarms 1-12, 37-pin D-connector

External alarms and controls, connector X4Pin Signal Pin Signal

1 External Control 1 20 +5V_BCF






7 External Alarm 1 26 DGND












19 DGND - -

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Customer alarms and controls and Extratalk alarms



Table 4. Customer alarms 13-24, 37-pin D-connector

External alarms, connector X5Pin Signal Pin Signal













13 - 32 -

14 - 33 -

15 - 34 -

16 - 35 -

17 - 36 -

18 - 37 -

19 DGND - -

Table 5. Extratalk alarms, 37-pin D-connector

Extratalk alarms, connector X6

Pin Signal Pin Signal

1 DGND 20 BBU3 mains breakdown/ Not

used1)

2 Extratalk AC/DC / AC/AC

cabinet door alarmCU

temperature high alarm

21 BBU3 charging failure/ Not

used1)

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3 BBU1 charging failure/ BBUE

unit failure1)

22 -

4 Backup battery low 23 -

5 BBU control/ BBUE battery

test control1)

24 -


cabinet HCU temperature

low alarm

25 -


cabinet H

26 DGND


cabinet HCU fault alarm

27 DGND

9 - 28 DGND

10 Extratalk Extension cabinet

door alarm

29 DGND


HCU temperature low alarm

30 DGND


HCU temperature high alarm

31 -

13 Extratalk Extension cabinetHCU fault alarm

32 +5V from BCF_ to HCU_

14 - 33 +5V from BCF_ to HCU_

15 BBU2 charging failure/ BBUE

inverter overload1)

34 +5V from BCF_ to HCU_


cabinet smoke alarm

35 -


smoke alarm

36 -

18 BBU1 mains

breakdown/ BBUE mains

breakdown 1)

37 -

19 BBU2 mains

breakdown/ Battery failure 1)

- -

- 1) First alarm description is for Extratalk AC/DC, second for Extratalk

AC/AC

Table 5. Extratalk alarms, 37-pin D-connector (Continued)

Extratalk alarms, connector X6

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A-bis interface



Note

7 A-bis interface

Interfaces 3 must be connected to the 75-ohm interface impedance according toalternative B as detailed in Reference [4].

The A-bis interface board is located on the top of the cabinet as shown in Figure14.

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Figure 14. A-bis connectors

When one TRU is used in the cabinet, there are three A-bis connections availablefor the TRU interfaces 1, 2 and 3.

A-bis Board

TRU22M OUT2

TRU22M IN2/OUT2

TRU1SYNCIN&OUT

TRU22M IN2

TRU1SYNCO&M/Q1

TRU1SYNC OUT

TRU1SYNC IN

TRU12M OUT2

TRU12M IN2/OUT2

TRU12M IN2

TRU22M OUT1

TRU22M IN1/OUT1

TRU22M IN1

TRU12M OUT3

TRU12M IN3/OUT3

TRU12M IN3

TRU12M OUT1

TRU12M IN1/OUT1

TRU12M IN1

A-bis Board

DN99601571

9

1

5

6

9

1

5

6

L2

L2

N

N

L1

L1

+

+

-

-

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A-bis interface



Note

When two TRUs are used in the cabinet, there are four A-bis connectionsavailable for the TRU interfaces 1 and 2 as the third interfaces are used to connectthe TRUs together.

In this case, the interfaces 3 of the TRU units are connected together by jumperon the cabinet backplane as detailed in Reference [4]. The connection betweenthe TRU units is used for synchronising the TRU units and for signal transmissionto further BTSs.

Interfaces 3 must be connected to the 75-ohm interface impedance according toalternative B as detailed in Reference [4].

In operation with two TRU units, interfaces 1 and 2 can be connected to either 75-or 120-ohm interface impedance.

7.1 PCM, HDSL and ISDN A-bis interfaces

The connector type of the 100/120 ohm balanced PCM-interface, HDSL modemand ISDN is a 9-pin female D-connector. The following five interfaces arelocated on the A-bis interface board:

• TRU1 2M IN1/OUT1 - PCM, HDSL and ISDN connection




• TRU1 2M IN3/OUT3 - PCM connection only

Also there is one balanced interface (D9-connector) for external synchronisation:

• TRU1 SYNC IN/OUT

The pin configuration of these connectors is detailed in Table 6.

Note that when the HDSL modem cable is produced, the unit will detect the signalpolarity pair individually so the wires need not be set in the same way at bothends.

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A-bis interface



Figure 15. RJ-45 Connector pin configuration (front view)

7.2 75-ohm A-bis interfaces

The connector type of the 75 ohm unbalanced interface is a coaxial female BNCconnector. The following five interfaces are located on the A-bis interface board:

• TRU1 2M OUT1 and TRU1 2M IN1





Also there are two other BNC connectors for external unbalancedsynchronisation:

• TRU1 SYNC IN

• TRU1 SYNC OUT

Table 7. Pin configuration of ISDN connectors

BTS 9-pin D-connector Signal Network terminal RJ-45

6 RLSCn 4

1 RLSSn 5

2-4 AGND for cable shield(s) Not connected

9 TLSCn 6

5 TLSSn 3

Pin 8 Pin 1

DN99601583

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Interface cabling



7.3 Operation and maintenance interface in A-bisboard

The connector type of the Operation and Maintenance (O&M) interface in the A-bis interface board is a 9-pin female D-connector.

The TRU1 NOKIA O&M/ interface can be used for connecting externalequipment to the BTS, for example Nokia DMR18-38S radio relay equipment.

Table 8. Pin configuration of TRU1 Nokia O&M interface

Pin number Signal

1 EIOUT2

2 Not connected

3 AGND

4 Not connected

5 EIIN2

6 EIOUT1

7 Not connected

8 Not connected

9 EIIN1

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Interface cabling



Figure 16. TRX slot numbering and antenna configuration

Cabinet cabling between the combiner units (AFE, AFT, AFC or RTC) and theantenna connectors on the cabinet top is detailed in individual installationdocuments.

BasicExtension

L2

L2

N

N

L1

L1

+

+

-

-

PE

L2

L2

N

N

L1

L1

+

+

-

-

PE

12

11

10

3

2

1

9

8

7

6

54

DN9601595

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References

1. Nokia Talk-family BTS Warnings and Cautions, DN99593973

2. Installation Requirements, DN99594248

3. Nokia Talk-family BTS Installation Completion and Checklist,DN99604592

4. Nokia Citytalk and Intratalk Unit Installation and Setting, DN99601602

5. Nokia Talk-family and PrimeSite BTS Man Machine Interface User’sGuide, DN99601735

6. PSM User Manual, CS78550.01

7. EmPower 1100 User Manual, CS78530.01 Version 1

8. EmPower 1900 User Manual, CS78540.01 Version 1

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Interface cabling

dn99596449x9x0xen

Documents