Paradyne HOTWIRE 7900 User manual

HOTWIRE

MODEL 7900

BASIC MAINTENANCE

PROCESSOR

USER’S GUIDE

Document No. 7900-A2-GB20-00

March 1998

Printed on recycled paper

A

7900-A2-GB20-00

March 1998

Copyright  1998 Paradyne Corporation.

Printed in U.S.A.

Notice

This publication is protected by federal copyright law. No part of this publication may be copied or distributed,

transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language in any form

or by any means, electronic, mechanical, magnetic, manual or otherwise, or disclosed to third parties without the

express written permission of Paradyne Corporation, 8545 126th Ave. N., Largo, FL 33773.

Paradyne Corporation makes no representation or warranties with respect to the contents hereof and specifically

disclaims any implied warranties of merchantability or fitness for a particular purpose. Further, Paradyne Corporation

reserves the right to revise this publication and to make changes from time to time in the contents hereof without

obligation of Paradyne Corporation to notify any person of such revision or changes.

Changes and enhancements to the product and to the information herein will be documented and issued as a new

release to this manual.

Trademarks

All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered

service marks of their respective owners.

Warranty, Sales, and Service Information

Contact your local sales representative, service representative, or distributor directly for any help needed. For

additional information concerning warranty, sales, service, repair, installation, documentation, training, distributor

locations, or Paradyne worldwide office locations, use one of the following methods:

 Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com

 Via Telephone: Call our automated call system to receive current information via fax or to speak with a

company representative.

— Within the U.S.A., call 1-800-870-2221

— Outside the U.S.A., call 1-727-530-2340

Important Regulatory Information

B

7900-A2-GB20-00 March 1998

Important Safety Instructions

1. Read and follow all warning notices and instructions marked on the product or included in the manual.

2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to

protect it from overheating, these slots and openings must not be blocked or covered.

3. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the

power cord.

4. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous

high voltage points or other risks. Refer all servicing to qualified service personnel.

5. General purpose cables are provided with this product. Special cables, which may be required by the regulatory

inspection authority for the installation site, are the responsibility of the customer.

6. When installed in the final configuration, the product must comply with the applicable Safety Standards and

regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory

agencies and inspection authorities to ensure compliance.

7. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If

products installed in separate buildings are interconnected, the voltage potential may cause a hazardous

condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if

necessary, implement corrective action prior to interconnecting the products.

8. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:

— Never install telephone wiring during a lightning storm.

— Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.

— Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the

network interface.

— Use caution when installing or modifying telephone lines.

— Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of

electric shock from lightning.

— Do not use the telephone to report a gas leak in the vicinity of the leak.

Important Regulatory Information

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7900-A2-GB20-00

March 1998

EMI Warnings

!

WARNING:

This equipment has been tested and found to comply with the limits for a Class A digital device,

pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against

harmful interference when the equipment is operated in a commercial environment. This equipment

generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance

with the instruction manual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause harmful interference in which case the user will be

required to correct the interference at his own expense.

The authority to operate this equipment is conditioned by the requirements that no modifications will be

made to the equipment unless the changes or modifications are expressly approved by Paradyne

Corporation.

In order to maintain compliance with FCC Part 15 Rules, the ferrite choke must be installed on the V.35

cable. Refer to the installation instructions.

!

WARNING:

To Users of Digital Apparatus in Canada:

This Class A digital apparatus meets all requirements of the Canadian interference-causing equipment

regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du règlement sur le matérial

brouilleur du Canada.

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7900-A2-GB20-00

March 1998

Contents

About This Guide

H Document Purpose and Intended Audience v. . . . . . . . . . . . . . . . . . . . . . . . .

H Document Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Product-Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 About the Hotwire Model 7900 Basic Maintenance Processor

H What is the MTU-M 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H MTU-M Standard Features 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H User Interface Types 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 MTU-M Installation Procedures

H Package Checklist 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Installing the MTU-M 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Connecting the Primary Nest to Additional Nests 2-3. . . . . . . . . . . . . . . . . . . .

Expansion Nest Numbering Sequence 2-4. . . . . . . . . . . . . . . . . . . . . . . . .

H Connecting External Alarms 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3 Initial Setup Instructions

H Accessing the System for the First Time 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . .

H Entering Initial Network Configuration (Netconfig) Parameters 3-2. . . . . . . .

H Entering Initial System Configuration (Sysconfig) Parameters 3-3. . . . . . . . .

H Additional Sysconfig Setup Considerations 3-4. . . . . . . . . . . . . . . . . . . . . . . . .

4 System Terminal Interface

H Connecting a System Terminal 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting Your System Terminal Through the MTU-M

Front Panel 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Accessing the MTU-M Through a Modem 4-3. . . . . . . . . . . . . . . . . . . . . . .

H MTU-M Main Menu 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu On/Off Feature 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

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5 MTU-M Status and Performance Functions

H Viewing Status from your System Terminal 5-1. . . . . . . . . . . . . . . . . . . . . . . . .

Viewing the General Status of all xTU-Cs 5-2. . . . . . . . . . . . . . . . . . . . . . .

Viewing the Detailed Status of a specific xTU-C 5-4. . . . . . . . . . . . . . . . .

H Accessing Performance Functions 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 MTU-M Maintenance Functions

H Accessing MTU-M Maintenance Menu Functions 6-1. . . . . . . . . . . . . . . . . . . .

Viewing the MTU-M Date and Time (date) 6-2. . . . . . . . . . . . . . . . . . . . . .

Changing MTU-M Date and Time (time_set) 6-3. . . . . . . . . . . . . . . . . . . .

Changing MTU-M Operational Parameters (sysconfig) 6-4. . . . . . . . . . .

Changing MTU-M Network Parameters (netconfig) 6-7. . . . . . . . . . . . . . .

Silencing External Alarms (ACO) 6-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearing MTU-M Alarms and Status Information (clear) 6-10. . . . . . . . . . .

Clearing XTU-C Alarms from the MTU-M (al_clear) 6-11. . . . . . . . . . . . . .

Taking the xTU-C out of the MTU-M Polling Cycle (stoppoll) 6-12. . . . . . .

Placing the xTU-C Back into the MTU-M Polling Cycle (pollstart) 6-12. . .

7 MTU-M Front Panel

H What to Monitor 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H MTU-M Front Panel LEDs 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Alarm Cut Off (ACO) 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Reset 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8 MTU-M Alarms

H Overview 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Accessing MTU-M Alarm Functions 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Alarm On/Off Options 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Display Alarm Option 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Alarm Definitions 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Major Alarms 8-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearing Major Alarms 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Abnormal Alarms 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearing Abnormal Alarms 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Resetting the MTU-M 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Resetting the xTU-C/R 8-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

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March 1998

9 Testing

H Detecting a Problem 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Understanding Loopbacks 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Accessing Loopback Functions 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Running a Local Loopback 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Running a Remote Loopback 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Ending a Loopback 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H HDSL T1 Loopback Tests 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Loopback Test 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Loopback Test 9-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H HDSL E1 Loopback Tests 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local Loopback Test 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Loopback Test 9-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H SDSL E1 Loopback Tests 9-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local loopback Test 9-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Loopback Test 9-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H SDSL T1 Loopback Tests 9-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Local loopback Test 9-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Remote Loopback Test 9-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A Cable Pin Assignments

H Terminal Connection Cable Pin Assignments A-1. . . . . . . . . . . . . . . . . . . . . . .

B Netconfig and Sysconfig Menu Values

C SNMP Traps

H SNMP Traps C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

warmStart C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

linkUp and linkDown C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Glossary

Index

Contents

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March 1998

About This Guide

Document Purpose and Intended Audience

This guide contains information needed to install, configure, and operate the

Hotwire Model 7900 Basic Maintenance Processor (also known as an MTU-M

nest card) for nest-mounted Hotwire 7900 termination units.

It is expected that readers of this document are central office/site (CO) or special

service installation technicians or network engineers who have an understanding

of digital subscriber line systems and High-bit-rate Digital Subscriber Loop

(HDSL) and Symmetric Digital Subscriber Loop (SDSL) transmission systems

plus the deployment of such systems in a telephone company or private network

environment.

Document Summary

Section Description

Chapter 1

About the Hotwire Model 7900 Basic Maintenance

Processor

. Describes the features of the Model

7900-F1-500 and typical configurations.

Chapter 2

MTU-M Installation Procedures

. Describes how to install the

MTU-M in the Hotwire Model 7900 Nest and connect

multiple adjacent nests.

Chapter 3

Initial Setup Instructions

. Provides initial setup instructions

for the MTU-M, including initial IP addressing and system

operational settings.

Chapter 4

System Terminal Interface.

Provides procedures for

connecting a VT100-compatible system terminal to the

MTU-M front panel or nest rear panel. This chapter also

provides procedures to access MTU-M functions through a

modem.

Chapter 5

MTU-M Status and Performance Functions.

Describes how

to monitor the status and performance of nest card

termination units.

About This Guide

vi

7900-A2-GB20-00

March 1998

Section Description

Chapter 6

MTU-M Maintenance Functions.

Describes how to view and

change MTU-M operational parameters.

Chapter 7

MTU-M Front Panel.

Describes how to monitor nest card

termination unit alarms using the MTU-M front panel LEDs.

Chapter 8

MTU-M Alarms.

Describes how to access, display, and reset

MTU-M alarm functions.

Chapter 9

Testing

. Provides procedures for performing loopback

testing on xTU-C/R pairs.

Appendix A

Cable Pin Assignments.

Contains connector and interface

details.

Appendix B

Standards Compliance for SNMP Traps.

Contains SNMP

trap information.

Appendix C

Netconfig and Sysconfig Menu Values Table.

Contains a

table with default MTU-M settings and a column to record

your initial system configuration.

Glossary Defines acronyms and terms used in this document.

Index Lists key terms, acronyms, concepts, and sections in

alphabetical order.

Product-Related Documents

Document Number Document Title

7900-A2-GN20

Hotwire Model 7900 Nest and Options Installation

Guide

7910-A2-GB20

Hotwire Model 7914 and 7915 T1 and E1 SDSL Nest

Card Termination Units User’s Guide

7914-A2-GB20

Hotwire Model 7914 Standalone T1 SDSL

Termination Unit User’s Guide

7915-A2-GB20

Hotwire Model 7915 Standalone E1 SDSL

Termination Unit User’s Guide

7920-A2-GB20

Hotwire Models 7924 and 7925 T1 and E1 HDSL

Nest Card Termination Units User’s Guide

7924-A2-GB20

Hotwire Model 7924 Standalone T1 HDSL

Termination Unit User’s Guide

7925-A2-GB20

Hotwire Model 7925 Standalone E1 HDSL

Termination Unit User’s Guide

7925-A2-GB22

Hotwire Model 7925 Standalone T1 HDSL

Termination Unit, G.703 Interface, User’s Guide

Contact your sales or service representative to order additional product

documentation.

Paradyne documents are also available on the World Wide Web at:

http://www.paradyne.com

Select

Service & Support

→

Technical Manuals

1-1

7900-A2-GB20-00

March 1998

About the Hotwire Model 7900

Basic Maintenance Processor

1

What is the MTU-M

The Hotwiret Model 7900 Basic Maintenance Processor (MTU-M) card is a

processor circuit card assembly (CCA) that mounts into a Hotwire Model 7900

Nest. It is used to monitor the status of the Hotwire Digital Subscriber Line (DSL)

cards and Hotwire Remote Termination Units (RTUs) from either of the following:

H A Network Management System using Simple Network Management

Protocol (SNMP) through the Ethernet port located on the Model 7900 Nest

back panel

H A local asynchronous terminal through the MTU-M’s VT100 serial port

located on the MTU-M front panel

The MTU-M is installed in Slot 1 of the Hotwire Model 7900 Nest and monitors

the performance and status of the following models of nest card termination units

and their associated remote termination units:

Model Number Description

7914-B1-xxx SDSL T1 DSX-1

7915-B1-xxx SDSL E1 G.703

7924-B1-xxx HDSL T1 DSX-1

7925-B1-xxx HDSL E1 G.703

The Hotwire Model 7900 19-inch nest holds up to 16 nest-mounted termination

units (15 with the MTU-M installed). A standard 19-inch by 72-inch equipment

rack can house four nests for a total of 64 nest cards.

MTU-M

POWER

FAIL

NMS LINK

MODEMS

ALARMS

MAJOR

MINOR

ABNML

ACO

ACTIVE

97-15665

C

O

N

S

O

L

E

RESET

About the Hotwire Model 7900 Basic Maintenance Processor

1-2

7900-A2-GB20-00

March 1998

If you have multiple nests, the MTU-M is installed in the top nest (Nest 1) and that

nest is then referred to as the primary nest. Additional expansion nests are

connected to the primary nest through RJ48 connectors located on the nest rear

panel (refer to Chapter 2,

MTU-M Installation Procedures

).

Nest card termination units are referred to as xTU-C/Rs. The

x

refers to either H

for HDSL termination units or S for SDSL termination units. The xTUs configured

as central office/site (CO) are referred to as xTU-Cs. The xTU-C’s associated

CP-configured units are referred to a xTU-Rs. The MTU-M monitors only those

xTUs configured as CO. The status of the associated CP-configured unit

(

xTU-R),

nest-mounted or standalone, is monitored through the xTU-C.

The Hotwire Model 7900 Nest and nest card termination units are described in

separate user’s guides. Refer to

Product-Related Documents

in

About this Guide

for information on other manuals.

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

SDSL

LOS / BER

LOOP

98-15632-0

1

Nest Card

Termination Units (xTU-C/R)

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

PWR

FAIL

HDSL

LOS / BER

LOOP 1

LOOP 2

MTU-M

POWER

FAIL

NMS LINK

MODEMS

ALARMS

MAJOR

MINOR

ABNML

ACO

ACTIVE

C

O

N

S

O

L

E

RESET

About the Hotwire Model 7900 Basic Maintenance Processor

1-3

7900-A2-GB20-00

March 1998

MTU-M Standard Features

The MTU-M allows you to:

H Monitor and display network and loop performance statistics for up to 79 nest

card termination units and their associated remote termination units (Refer to

Chapter 5,

MTU-M Status and Performance Functions

).

H Monitor network status remotely from an SNMP manager (Refer to

Chapter 5,

MTU-M Status and Performance Functions

)

H Monitor system (MTU-M) and network alarms (Refer to Chapter 8,

MTU-M

Alarms

)

H Perform loopback testing on the nest cards and their associated remote

termination units (Refer to Chapter 9,

Testing

)

H Reset the system (MTU-M) or individual nest card termination units (Refer to

Chapter 8,

MTU-M Alarms

)

H Connect external alarms to the Model 7900 nest (Refer to Chapter 2,

MTU-M

Installation Procedures

)

User Interface Types

There are three types of user interfaces to the MTU-M card:

H System terminal (refer to Chapter 4,

System Terminal Interface

) – Provides

a menu-driven interface to the MTU-M that allows you to monitor and test

HDSL and SDSL nest card termination units configured as CO. The system

maintenance terminal can be any VT100-compatible terminal.

H MTU-M front panel (refer to Chapter 7,

MTU-M Front Panel

) – Provides

LEDs and push buttons to allow you to monitor system alarms, reset the

MTU-M and silence external alarms.

H Ethernet Port (10BaseT) – Provides the MTU-M with an interface, through

the Hotwire Model 7900 Nest back panel, to your Network Management

System using SNMP.

About the Hotwire Model 7900 Basic Maintenance Processor

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March 1998

MTU-M Installation Procedures

2

Package Checklist

Verify that your package contains the following:

- A Hotwire Model 7900 MTU-M

- System terminal cable (9 pin-to-9 pin)

- Warranty card

Installing the MTU-M

The procedures in this guide assume that you have already installed the Hotwire

Model 7900 Nest. Installation of the Hotwire Model 7900 Nest and nest card

termination units is described in separate user’s guides. Refer to

Product-Related

Documents

in

About this Guide

.

!

HANDLING PRECAUTIONS FOR

STATIC-SENSITIVE DEVICES

This product is designed to protect sensitive components from damage

due to electrostatic discharge (ESD) during normal operation. When

performing installation procedures, however, take proper static control

precautions to prevent damage to equipment. If you are not sure of the

proper static control precautions, contact your nearest sales or service

representative.

496-15104

MTU-M Installation Procedures

2-2

7900-A2-GB20-00

March 1998

" Procedure

To install the MTU-M:

NOTE:

A maximum of four Hotwire Model 7900 nests can be installed into one

standard 72-inch equipment rack. If more than one nest is installed in the

same equipment rack, install the MTU-M in slot 1 of the top nest. The nest

containing the MTU-M is referred to as the primary nest.

1. Remove the MTU-M from any protective packaging.

2. Align the circuit board with the top and bottom card guides of Slot 1.

NETWORK

LOS/AIS/BER

LOCAL

REMOTE

LOOP BK

SYSTEM

POWER

FAIL

SDSL

LOS / BER

LOOP

OK

FAIL

SELECT

MAJOR

MINOR

ABNORM

ACO

ACTIVE

97-15598

MTU-M Slot 1

MTU-M

POWER

FAIL

NMS LINK

MODEMS

ALARMS

MAJOR

MINOR

ABNML

ACO

ACTIVE

C

O

N

S

O

L

E

RESET

3. Slide the MTU-M into the slot until the backplane connector plug is seated

firmly into the backplane.

4. Tighten the retaining screws at the top and bottom of the MTU-M front panel.

MTU-M Installation Procedures

2-3

7900-A2-GB20-00

March 1998

Connecting the Primary Nest to Additional Nests

Connections between nests are only made from the primary nest (Nest 1) to each

expansion nest (Nests 2, 3, and 4). Connecting the primary nest to an expansion

nest allows the MTU-M to monitor the nest card termination units in Nests 2, 3,

and 4.

" Procedure

To connect the primary nest to each expansion nest:

1. Connect the primary nest and Nest 2 by connecting the nest expansion cable

between J28 (TO 2) on the primary nest to J26 (FROM 1) on Nest 2.

2. Connect the primary nest and Nest 3 by connecting the nest expansion cable

between J29 (TO 3) on the primary nest to J26 (FROM 1) on Nest 3.

3. Connect the primary nest and Nest 4 by connecting the nest expansion cable

between J27 (TO 4) on the primary nest to J26 (FROM 1) on Nest 4.

97-15414

TO 4

TO 2

TO 3

FROM 1

POWER

Bgnd

–48vB

Agnd

–48vA

TO 4

TO 2

TO 3

FROM 1

POWER

J27

–48vB

Agnd

–48vA

P6

P5

Alarms

RS232

Modem

DB25

Network

Management

10BaseT

AUI

DB15

Local Loop

Nest 1

(Primary)

Nest 2

TO 4

TO 2

TO 3

FROM 1

POWER

Bgnd

–48vB

Agnd

–48vA

TO 4

TO 2

TO 3

FROM 1

POWER

Bgnd

–48vB

Agnd

–48vA

TO 4

TO 2

TO 3

FROM 1

POWER

Bgnd

–48vB

Agnd

–48vA

Nest 3

Nest 4

J27

J28

J29

J26

J28

J29

J26

J27

J28

J29

J26

J27

J28

J29

J26

J27

J28

J29

J26

MTU-M Installation Procedures

2-4

7900-A2-GB20-00

March 1998

Expansion Nest Numbering Sequence

A fully populated equipment rack with four 19-inch Hotwire Model 7900 nests and

one MTU-M holds 63 nest card termination units. There are 15 nest card

termination units in the first nest (primary nest with MTU-M installed) and 16 in

each adjacent nest. Nest card termination units are numbered from left to right

(from the front of the nest) as follows:

In Nest . . .

Nest Cards are Numbered . . .

1 (primary) 2–16

2 21–36

3 41–56

4 61–76

NOTE:

MTU-M menus allow you to select xTU IDs from 2–80. This number reflects a

potential 23-inch nest option. Each 23-inch nest would hold up to 20 nest

card termination units. A fully populated equipment rack (with four 23-inch

nests) could contain up to 80 nest cards (a single MTU-M and 79 termination

units).

Connecting External Alarms

The MTU-M provides dry alarm contacts that allow you to connect external

alarms to the nest rear panel at J21. The Alarm contacts are energized by the

MTU-M upon detection of an alarm condition. Each alarm relay, when closed,

connects your alarm power to your common to complete your Major and

Abnormal alarm circuits. The Minor alarm relay is not currently supported.

" Procedure

To connect your external alarms to the rear panel alarm terminal (J21):

1. Connect alarm ground to the terminal labeled COM.

97-15654

TO 4

TO 2

TO 3

FROM 1

POWER

Bgnd

48vB

Agnd

48vA

P6

P5

Alarm s

RS232

Modem

DB25

Network

Management

10BaseT

AUI

DB15

Local Loop

P7

J27

J28

J29

J26

J21

Alarms

MAJ

MIN

ABNM

COM

2. Connect your abnormal alarm circuit to the terminal labeled ABNM.

3. Connect your major alarm circuit to the terminal labeled MAJ.

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7900-A2-GB20-00

March 1998

Initial Setup Instructions

3

Accessing the System for the First Time

When you install the MTU-M for the first time you must enter network

configuration and system operational parameters for the MTU-M. This chapter

provides the setup procedures needed to initially configure the MTU-M.

NOTE:

MTU-M initial setup procedures must be performed locally from a VT100

connected through the DB9 Console port on the MTU-M front panel.

Initial Setup Instructions

3-2

7900-A2-GB20-00

March 1998

Entering Initial Network Configuration (Netconfig)

Parameters

The recommended order for entering network configuration parameters is:

H MTU-M IP address

H Subnet Mask

H Default Gateway

H SNMP Manager Address

H Default Gateway Address

H System Name, Contact, and Location

NOTE:

The default values are recorded in Appendix B,

Netconfig and Sysconfig

Menu Values

. When changing network configuration values, it is helpful to

write the values down in the table provided in Appendix B for future

reference. Default values have ben provided.

" Procedure

To enter initial network configuration parameters information:

1. At the MTU-M–> prompt, type m.

The Maintenance menu displays.

2. At the maint–> prompt, type net.

The Netconfig menu displays. This screen contains the current network

management information.

3. At the netconfig–> prompt, press Enter.

A prompt appears asking you if you wish to change the current values.

4. Type y at the yes/no prompt and press Enter.

The system displays the default settings.

5. Type new at the password prompt. You can change your password from the

Network Parameters menu.

The changes you make at the Netconfig menu are stored in a working buffer.

If you make an error or are unsure of your changes, do not save your

changes. The system will return to the previous values.

6. Change Netconfig menu option values as required. Refer to

Changing

MTU-M Network Parameters (netconfig)

in Chapter 6,

MTU-M Maintenance

Functions

.

7. Type q to exit the Netconfig menu.

8. At the yes/no prompt, type

y and press Enter to save your changes.

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Paradyne HOTWIRE 7900 User manual

Paradyne HOTWIRE 7900 User manual

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