Nortel NT5K02 Instrucciones de funcionamiento e instalación

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

SL-1

NT5K02 and NT8D03 Analog Line Cards

Description

Publication number: 553-3001-161

Document release: 3.1

Document status: Standard

Date: March 1, 1992

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

Revision history

January 29, 1990 Standard, release 1.0.

July 31, 1990 Standard, release 2.0.

April 1, 1991 Standard, release 2.1

December 1,1991 Standard, release 3.0. Reissued to include technical content updates.

March 1, 1992 Standard, release 3.1.

iii

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

Contents

About this document 1

References 1

Description 3

NT8D03 Analog Line Card (µ-Law) 3

Physical description 4

Functional description 4

NT5K02 Flexible Analog Line Card (A-Law) 5

Application 5

Physical description 6

Functional description 8

Technical summary 9

NT8D03 Analog Line Card 9

Analog line interface 9

Input impedance 9

Insertion loss 9

Frequency response 9

Message channel noise 10

Power requirements 11

Foreign and surge voltage protection 11

Overload level 11

Backplane pin layout 12

NT5K02 Flexible Analog Line Card 13

Analog line interface 13

Input impedance 13

Insertion loss 14

Frequency response 14

Idle channel noise 15

iv Contents

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

Ringer limitations 15

Ground button detection 16

Power requirements 16

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

About this document

This document outlines the characteristics of the NT5K02 and NT8D03

Analog Line Cards. The information is intended to be used as a guide when

connecting customer-provided apparatus to the line cards.

References

See the Meridian 1 planning and engineering guide for

—Master index (553-3001-000)

—System overview (553-3001-100)

—System engineering (553-3001-151)

—Spares planning (553-3001-153)

—Equipment identification (553-3001-154)

See the Meridian 1 installation and maintenance guide for

—System installation procedures (553-3001-210)

Note: System installation procedures contains the procedures for the

analog line card cross-connections.

—Circuit card installation and testing (553-3001-211)

—Fault clearing (553-3001-510)

—Hardware replacement (553-3001-520)

2 About this document

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

See the X11 software guide for an overview of software architecture,

procedures for software installation and management, and a detailed

description of all X11 features and services. This information is contained

in two documents:

—X11 software management (553-3001-300)

—X11 features and services (553-3001-305)

See the X11 input/output guide (553-3001-400) for a description of all

administration programs, maintenance programs, and system messages.

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

Description

NT8D03 Analog Line Card (µ-Law)

The NT8D03 Analog Line Card provides talk battery and signaling for

regular 2-wire common battery 500-type (rotary dial) and 2500-type

(Digitone dial) telephones and key telephone equipment.

The analog line card interfaces to and is compatible with the equipment

listed in Table 1.

Table 1

NT8D03 Analog Line Card application and compatibility

Equipment Specifications

500-type rotary dial telephones:

dial speed

percent break

interdigit time

8.0 to 22.5 pps

58 to 70%

150 ms

2500-type Digitone telephones:

frequency accuracy

pulse duration

interdigit time

speed

+ 1.5 %

40 ms

12.5 digits/s

4 Description

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

Physical description

Analog line cards are housed in:

— NT8D37 Intelligent Peripheral Equipment (IPE) Modules:

up to 16 cards

— NT8D11 Common/Peripheral Equipment (CE/PE) Modules:

up to 10 cards

The analog line card circuitry is mounted on a 31.75 by 25.40 cm (12.5 by

10 in.) printed circuit board.

The analog line card connects to the backplane through a 160-pin edge

connector. The backplane is cabled to the input/output (I/O) panel, which

connects to the main distribution frame (MDF), also called a cross-connect

terminal, through 25-pair cables. Telephones then connect to the card at the

MDF.

The faceplate of the analog line card is equipped with a red light emitting

diode (LED) which lights when the card is disabled. When the card is

installed, the LED remains lit for two to five seconds as a self-test runs. If

the self-test completes successfully, the LED flashes three times and

remains lit until the card is configured and enabled in software, then the

LED goes out. If the LED does not follow the pattern described or operates

in any other manner (such as continually flashing or remaining weakly lit),

the card should be replaced.

Functional description

The analog line card contains an 8051-family microprocessor that provides

the following functions:

— self-identification

— self-test

— control of card operation

— status report to the controller

— maintenance diagnostics

Description 5

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

The analog line card also provides:

— 600-ohm balanced terminating impedance

— analog-to-digital and digital-to-analog conversion of transmission and

reception signals for 16 audio telephone lines

— transmission and reception of scan and signaling device (SSD)

signaling messages over a DS30X signaling channel in A10 format

— on-hook and off-hook status detection

— 20-Hz ringing signal connection and automatic disconnection when the

telephone goes off-hook

— synchronization for connecting and disconnecting the ringing signal to

zero crossing of ringing voltage

— loopback of SSD messages and Pulse Code Modulation (PCM) signals

for diagnostic purposes

— correct initialization of all features, as configured in software, at

power-up

— direct reporting of digits dialed (500 telephones) by collecting dial

pulses

NT5K02 Flexible Analog Line Card (A-Law)

The NT5K02 Flexible Analog Line Card provides talk battery and

signalling for regular 2-wire common battery 500-type (rotary dial), 2500-

type (Digitone* dial) telephones and key telephone equipment. The

telephones may have either ground button recall switches, high voltage

message waiting lamps, or low voltage message waiting LEDs.

Application

The NT5K02 Flexible Analog Line Card is used as follows:

• NT5K02AA — High voltage message waiting analog line card

typically used in Australia.

• NT5K02DA — Ground button low voltage message waiting analog

line card typically used in France.

• NT5K02EA — Ground button low voltage message waiting analog line

card typically used in Germany.

6 Description

NT5K02 and NT8D03 Analog Line Cards 553-3001-161

• NT5K02FA — Ground button low voltage message waiting analog line

card with 600 Ωtermination (A/D -4dB, D/A -1dB).

• NT5K02GA — Same as NT5K02FA with different loss plan (A/D

-4dB, D/A -3dB)

• NT5K02HA — Ground button low voltage message waiting analog

line card typically used in Belgium.

• NT5K02JA — Low voltage message waiting analog line card typically

used in Denmark.

• NT5K02KA — Ground button low voltage message waiting analog

line card typically used in Netherlands.

• NT5K02LA — Analog line card typically used in New Zealand.

• NT5K02MA — Ground button low voltage message waiting analog

line card typically used in Norway.

• NT5K02NA — Ground button low voltage message waiting analog

line card typically used in Sweden.

• NT5K02PA — Ground button low voltage message waiting analog line

card typically used in Switzerland.

• NT5K02QA — Ground button low voltage analog line card typically

used in United Kingdom.

Physical description

Analog line cards are housed in:

— NT8D37 Intelligent Peripheral Equipment (IPE) Modules:

up to 16 cards

— NT8D11 Common/Peripheral Equipment (CE/PE) Modules:

up to 10 cards

The analog line card circuitry is mounted on a 31.75 by 25.40 cm (12.5 by

10 in.) printed circuit board.

The analog line card connects to the backplane through a 160-pin edge

connector. The backplane is cabled to the input/output (I/O) panel, which

connects to the main distribution frame (MDF), also called a cross-connect

terminal, through 25-pair cables. Telephones then connect to the card at the

MDF.

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