Northern Telecom Meridian SL-1 Manual de usuario

Integrated Services Network

Meridian SL-1*

QCA144 1.5 MB/S Remote Peripheral

Equipment Cabinet

Description, Installation and Testing

Publication number: Appendix 1 to 553-2601-200

Document Status: Standard

Date: 88 06 10

* Meridian and SL-1 are trademarks of Northern Telecom Limited

Appendix 1 to 553-2601-200

Contents

1. Description 1-1

Remote Peripheral Equipment (RPE) 1-1

QCA144 RPE cabinet 1-1

Expansion shelves 1-1

Power converters 1-2

Power line cords 1-2

Reserve batteries 1-3

Cooling units 1-3

Built-in cross connect terminal 1-3

2 Installation and connections 2-1

Environment 2-1

Grounding 2-1

Option and switch settings on circuit packs 2-1

Installation

Figure

1-1 Front View QCA144 RPE Cabinet 1-4

1-2 Front View Typical Common Equipment (CE) Cabinet 1-5

2-1 Ground Connection and Tests 2-5

2-2 Typical Terminal Block Layout 2-6

2-3 Built-in Cross Connect Terminal layout 2-7

2-4 RPE Cables C and D Cross Connections 2-8

2-5 Front View of RPE Cabinet 2-9

2-6 Shelf Assembly 2-21

2-7 Rear View of Cabinet 2-22

2-8 Battery Cell Connections 2-28

Contents Continued

iii

Appendix 1 to 553-2601-200

2-9 Reserve Power Supply Connections 2-29

2-10 Expansion Battery Unit Connections 2-30

2-11 P10 Cable Terminations and Designations 2-35

2-12 Cabinet Top Assembly 2-38

2-13 Cooling Unit Location and Connections 2-39

2-14 QBL15 Battery Distribution Box 2-45

2-15 Reserve Power Connections Outside Cabinet 2-46

2-16 Battery Sensing and Monitoring Connections 2-47

2-17 Local-To-Remote Cross-Connections 2-48

Charts

2-1 QCA144 RPE Cabinet Installation 2-4

2-2 QSD66 or QSD69 Expansion Shelf Installation 2-17

2-3 QBL24 Battery Unit Installation (Main Unit) 2-23

2-4 Expansion QBL24 Battery Unit Installation 2-26

2-5 QUA6 Power Fail Transfer Unit (PFTU) Installation 2-31

2-6 Alarm and Transfer Wiring (P10) Installation 2-32

2-7 QPC705 Power Converter Installation 2-36

2-8 QUD24 Fan Unit Installation 2-37

2-9 QCAD321 Junction Box Assembly Installation 2-40

2-10 QBL15 Battery Distribution Box Installation 2-44

Tables

2-A Peripheral Equipment Cable Terminating Sequence 2-15

2-B PFJ1 Emergency Transfer Cable Cross-connections 2-34

2-C Cable C Designations (Receive) Local and Remote 2-49

2-D Cable D Designations (Transmit) Local and Remote 2-50

Reason For Reissue: This Practice is reissued to include

additional information about cross-connections, to remove

references to rectifiers other than the QRF12 -48 V rectifier supplied

with the system and to make other minor changes. Changes are

indicated by a vertical bar in the margin next to the affected item.

iv Contents

Appendix 1 to 553-2601-200

1. Description

Remote peripheral equipment (RPE)

1.01 A description of the use and operation of RPE is given in 553-2601-

200.

1.02 This appendix describes the installation, connections and testing of

RPE installed in a QCA144 RPE cabinet and in a QSD69 RPE shelf

mounted in a cabinet either at the remote end or the local end.

QCA144 RPE cabinet

1.03 The QCA144 RPE cabinet is used to house RPE equipment at a

remote location. The single-tier base cabinet is equipped with an RPE shelf,

one PE shelf capable of accommodating ten PE line packs and a peripheral

buffer circuit pack, and the required power equipment ( Fig. 1-1). The base

cabinet can be expanded to a two- or three-tier cabinet by the addition of

one RPE or two PE expansion shelves. An RPE shelf can be installed in

place of a PE expansion shelf if additional network loops are required.

Expansion shelves

1.04 QSD69 RPE shelf. The QSD69 RPE shelf assembly can be mounted

at the Main Meridian SL-1 location in a QCA136 or QCA141 CE

equipment cabinet (Fig. 1-2) or in a QCA144 RPE cabinet at the remote

location. The RPE shelf assembly is designed to contain all the RPE related

circuit packs required to operate two network loops. Included in the shelf

assembly is a dual loop PE shelf containing eight slots for lines and trunks.

One additional slot is reserved for a dual loop peripheral buffer circuit pack.

1-1

Appendix 1 to 553-2601-200

1.05 QSD66 PE expansion shelf. The QSD66 PE expansion shelf can be

used to expand a QCA144 RPE cabinet to a two- or three-tier cabinet. The

QSD66 is equipped with two PE shelves each capable of accommodating

eight line circuit packs and one peripheral buffer circuit pack.

Note: Although the QSD66 PE expansion shelf provides dual-loop

capabilities, the shelf can only be used in a single-loop mode when

operating with RPE.

Power converters

1.06 QPC705 Power Converter. The QPC705 power converter supplies

15 V (for SL-1 and digital telephones) and -150 V (for message waiting)

to the PE shelf in the first tier of the cabinet. A QCAD278 cable is required

to connect the QPC705 converter.

1.07 QPC706 Power Converter. The QPC706 power converter provides

all the required power supplies to each PE shelf in the second and third tiers

of the cabinet. One converter is required for each PE shelf and is installed in

the designated slot on each shelf.

Power line cords

1.08 Three commercial power line cords can be used with the QCA144

RPE cabinet.

(a) A QCAD273 line cord is used when a 115 V 15A power supply is

provided. A NEMA type 5-15R power supply receptacle is required to

accommodate the line cord.

(b) A QCAD274 line cord is used when a 220 V 20A power supply is

provided. A NEMA type L6-20R power supply receptacle is required to

accommodate the line cord.

provided. A NEMA type L5-30R power supply receptacle is required to

accommodate the line cord.

1.09 Power cords are connected to the rear of the -48 V rectifier in the

cabinet.

1-2 Description

Appendix 1 to 553-2601-200

Reserve batteries

1.10 One or two QBL24 battery units containing rechargeable dry cells can

be connected to the cabinet when service is required during commercial

power failures.

1.11 The cabinet can also be connected to lead acid batteries through a

QBL15 battery distribution box and a QCAD321 junction box assembly.

Cooling units

1.12 QUD24 Cooling Units are used to dissipate excess heat and are

required in cabinets equipped with three tiers.

Built-in cross connect terminal

1.13 An optional built-in cross connect terminal using BIX* cable terminal

block system is available with cabinets equipped for suppression of EMI.

The built-in cross connect terminal, which is mounted on the EMI shields at

the rear of the cabinet, is accessible through the removal of the cabinet rear

covers. Connections to the system which would otherwise be made at an

external wall mounted or frame mounted terminal can be made using the

built-in cross connect terminal.

1.14 In a three tier cabinet the built-in cross connect terminal allows for

424 three-pair station wiring terminations plus additional connectors for

Power Fail Transfer Unit (PFTU) terminations. However, in cases where a

high density of 16-port line cards and/or four- or six-pair station cabling is

used, there may not be sufficient space to route or terminate all the wiring.

In these cases, additional external terminal blocks may be required. The

built-in cross connect terminal feature is not used in two cabinet

configurations.

* BIX is a trademark of Northern Telecom

Description 1-3

Appendix 1 to 553-2601-200

Figure 1-1

Front View QCA144 RPE Cabinet

Note: This position can be equipped with an RPE shelf when

additional RPE network loops are required.

(III.553-1266)

1-4 Description

Appendix 1 to 553-2601-200

Figure 1-2

Front View Typical Common Equipment (CE) Cabinet

Note: This position can be equipped with a QSD69 RPE shelf when

additional RPE network loops are required.

(III.553-1267)

Description 1-5

Appendix 1 to 553-2601-200

2-1

Appendix 1 to 553 -2601-200

2. Installation and connections

Environment2.01 The QCA144 should be installed in an environment suitable for

Meridian SL-1. The location should be clean, dry and protected from

extreme heat or cold. The operating environment described in 553-2YY1-

200 for the location of the main Meridian SL-1 should be used as a guide

when installing the QCA144 RPE cabinet.

Grounding 2.02 The QCA144 cabinet must be connected to a suitable building ground

to ensure proper operation of the RPE equipment. Refer to 553-2YY1-200

for a description of suitable building grounds.

Option and switch settings on circuit packs

2.03 Certain circuit packs are equipped with option plugs or switches

located on the component side of the pack. Refer to 553-2201-211 for a list

of these circuit packs and the option settings.

Caution: Incorrectly set option plugs or switches on circuit packs

can prevent the system from operating properly and in certain cases

can cause system failure. Check option settings on all circuit packs

being installed in the cabinet.

Installation 2.04 Chart 2-1 describes the steps which should be followed when

installing a QCA144 RPE cabinet.

2-2 Installation and connections

Appendix 1 to 553-2601-200

2.05 Chart 2-2 describes the procedures which should be followed when

installing an additional QSD66 PE or QSD69 RPE shelf assembly in an

existing QCA144 RPE cabinet.

2.06 Chart 2-3 describes the procedures which should be followed when

installing a QBL24 Battery Unit.

2.07 Chart 2-4 describes the procedures which should be followed when

installing an expansion QBL24 Battery Unit.

2.08 Chart 2-5 describes the procedures which should be followed when

installing a QUA6 Power Fail Transfer Unit (PFTU).

2.09 Chart 2-6 describes the procedures which should be followed when

installing alarm and transfer wiring (P10).

2.10 Chart 2-7 describes the procedures which should be followed when

installing a QPC705 power converter.

2.11 Chart 2-8 describes the procedures which should be followed when

installing QUD24 cooling units.

2.12 Chart 2-9 describes the procedures which should be followed when

installing a QCAD321 junction box assembly.

2.13 Chart 2-10 describes the procedures which should be followed when

installing QBL15 battery distribution box.

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