Paradyne Hotwire 7975 User Manual

HOTWIRE 7975

M/SDSL STANDALONE

TERMINATION UNIT

USER’S GUIDE

Document No. 7975-A2-GB20-40

December 1998

Copyright E 1998 Paradyne Corporation.
All rights reserved.
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.

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:

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

Trademarks

All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered
service marks of their respective owners.

Document Feedback

We welcome your comments and suggestions about this document. Please mail them to Technical Publications,
Paradyne Corporation, 8545 126th Ave. N., Largo, FL 33773, or send e-mail to [e-mail]. Include
the number and title of this document in your correspondence. Please include your name and phone number if you
are willing to provide additional clarification.

Printed on recycled paper

A

December 1998

7975-A2-GB20-40

Important Information

Important Safety Instructions

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

2. Input power to this product must be provided by one of the following: (1) a UL Listed/CSA Certified power source
with a Class 2 or Limited Power Source (LPS) output for use in North America; or (2) a 24 Vdc National Electric
Code (NEC) ANSI/NFPA 70/Canadian Electric Code (CEC) Class 2 circuit installed in accordance with articles
1 10-16, 110-17, and 110-18 of the NEC, and articles 2-308, 2-310, 2-312, 2-314, 2-200, and 2-202 of the CEC, or
(3) a Safety Extra Low Voltage (SELV) power source with a maximum available output of less than 240 VA,
certified for use in the country of installation.

3. 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.

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

5. Do not attempt to install or service this product yourself, as opening or removing covers may expose you to
dangerous high voltage points or other risks. Refer all installation and servicing to qualified service personnel.

6. 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.

7. 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.

8. 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.

9. 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.

7975-A2-GB20-40 December 1998

B

Important Information

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.

!

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.

C

December 1998

7975-A2-GB20-40

Contents

About This Guide

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

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

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

1 About the Hotwire 7975 Standalone Termination Unit

H M/SDSL Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Hotwire 7975 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Network Configuration 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

H Front Panel LED Status Indicators 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Rear Panel Interface Connections 1-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H SNMP Management Capabilities 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Management Information Base (MIB) Support 1-5. . . . . . . . . . . . . . . . . . .

SNMP Traps Support 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 Using the Asynchronous Terminal Interface

H User Interface Access 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Communication Port Settings 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Initiating an ATI Session 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Screen Work Areas 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Navigating the Screens 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Keyboard Keys 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Screen Function Keys 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switching Between Screen Work Areas 2-8. . . . . . . . . . . . . . . . . . . . . . . .

H Ending an ATI Session 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7975-A2-GB20-40

December 1998

i

Contents

3 Initial Startup and Configuration

H Overview 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Connecting Power to the Unit 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting the Unit to an Optional External DC Power Source 3-2. . . .

H Connecting to the Network 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Connecting to a System Terminal 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Entering Identity Information 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Choosing a Configuration Mode 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Configuring the Unit Using the Configuration Menus 3-5. . . . . . . . . . . . . . . . .

Configuration Options 3-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Configuring the Unit Using the Internal Switches 3-6. . . . . . . . . . . . . . . . . . . .

Switchpack Locations 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Switchpack Definitions 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Accessing and Displaying Configuration Options 3-1 1. . . . . . . . . . . . . . . . . . . .

H Configuration Edit/Display 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Configuring AutoRate 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Configuration Loader 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Saving Configuration Options 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Download Code 3-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 Monitoring the Unit

H What to Monitor 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Viewing System and Test Status 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Health and Status 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Self-Test Results 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Test Status 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Viewing Network Error Statistics 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Viewing Network Performance Statistics 4-8. . . . . . . . . . . . . . . . . . . . . . . . . . .

H Viewing 7975 Standalone Termination Unit LEDs 4-9. . . . . . . . . . . . . . . . . . . .

H 7975 Standalone Termination Unit LEDs 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

December 1998

7975-A2-GB20-40

5 Testing

Contents

H Accessing the Test Menu 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Running Network Tests 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Line Loopback 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repeater Loopback 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Send Remote Line Loopback 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Send and Monitor 511 5-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Running SYNC Data Port Tests 5-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Terminal Loopback 5-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Data Channel Loopback 5-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Send Remote Data Channel Loopback 5-10. . . . . . . . . . . . . . . . . . . . . . . . .

H Device Tests 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lamp Test 5-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Ending an Active Test 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6 Messages and Troubleshooting

H Overview 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Configuring SNMP Traps 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Device Messages 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Troubleshooting 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7 Security

H Overview 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H ATI Access Levels 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Creating a Login 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Deleting a Login 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Controlling SNMP Access 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Assigning SNMP Community Names and Access Types 7-4. . . . . . . . . .

Limiting SNMP Access through the IP Addresses of the Managers 7-5.

H Resetting the Termination Unit’s COM Port or Factory Defaults 7-5. . . . . . . .

8 IP Addressing

H Selecting an IP Addressing Scheme 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H IP Addressing Example 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7975-A2-GB20-40

December 1998

iii

Contents

A Configuration Option Tables

H Overview A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Network Interface Options Menu A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Synchronous Data Port Options Menu A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H System Options Menu A-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Communication Port A-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Management and Communication Options Menu A-11. . . . . . . . . . . . . . . . . . . .

Telnet Sessions Options A-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Communication Protocol Options A-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SNMP Traps Options A-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General SNMP Management Options A-16. . . . . . . . . . . . . . . . . . . . . . . . . .

SNMP NMS Security Options A-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

B Standards Compliance for SNMP Traps

H SNMP Traps B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

warmStart B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

authenticationFailure B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

linkUp and linkDown B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Enterprise-Specific Traps B-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

C Cables and Pin Assignments

H Overview C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H DSL Network Interface Cable C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H COM Port Interface Cable C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H EIA-530A Port Interface Connector C-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H EIA-530A-to-X.21 Interface Cable C-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H EIA-530A-to-RS449 Cable Interface C-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H EIA-530A-to-V.35 Cable Interface C-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Power Input Connector C-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

H Optional Power Cable C-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

D Technical Specifications

Glossary

Index

iv

December 1998

7975-A2-GB20-40

About This Guide

Document Purpose and Intended Audience

This guide contains information needed to set up, configure, and operate the
Hotwire 7975 Multirate/Symmetric Digital Subscriber Line (M/SDSL) Standalone
Termination Unit and is intended for installers and operators.

Document Summary

Section Description

Chapter 1

Chapter 2

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

About the 7975 Standalone Termination Unit.

7975 Termination Unit’s features and capabilities.

Using the Asynchronous Terminal Interface.

instructions for accessing the user interface and navigating
through the screens.

Initial Startup and Configuration.

setting up the user interface and configuration steps.

Monitoring the Unit.

network statistics to monitor the unit.

Testing.

setup.

Messages and Troubleshooting.

SNMP traps, device messages, and troubleshooting.

Security.

the effective access levels, and controlling SNMP access.

IP Addressing.

regarding IP addresses.

Provides information about available tests and test

Presents procedures for creating a login, setting

Describes the

Provides

Provides procedures for

Describes using the LEDs, status, and

Provides information on

Provides information and examples

7975-A2-GB20-40

December 1998

v

About This Guide

Section Description

Appendix A

Appendix B

Appendix C

Appendix D

Glossary Defines acronyms and terms used in this document.
Index Lists key terms, acronyms, concepts, and sections in

Product-Related Documents

Document Number Document Title

8775-A2-GB20
8775-A2-GZ40

Configuration Option Tables.

options, default settings, and possible settings.

Standards Compliance for SNMP Traps.

trap compliance information.

Cables and Pin Assignments.

interface information.

Technical Specifications.

specifications, network and port interfaces, power
consumption values, and accessory part numbers.

alphabetical order.

Contains all configuration

Contains SNMP

Contains connector and

Contains physical and regulatory

Hotwire 8775 M/SDSL Termination Unit User’s Guide
Hotwire 8775 M/SDSL Termination Unit Installation

Instructions

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

vi

December 1998

7975-A2-GB20-40

About the Hotwire 7975
Standalone Termination Unit

M/SDSL Overview

Hotwire Multirate/Symmetrical Digital Subscriber Line (M/SDSL) products
maximize customer service areas by varying the DSL line rate. This ensures
symmetric DSL connectivity over a wide range of telephone line distances and
transmission line qualities.

Hotwire M/SDSL products can transport at full or fractional payload rates over a
2-wire, full-duplex circuit over varying distances based on the conditions of the
2-wire loop. Examples include support for router, multiplexer and PBX
connections at 128 kbps, with distances exceeding 29,000 feet (8.9 km) on
24 gauge (.5 mm) cable, or up to 15,000 feet (4.6 km) delivered at 2.048 Mbps on
24 gauge (.5 mm) cable.

1

Hotwire M/SDSL is equipped with an automatic configuration capability that
reduces the M/SDSL installation process to a simple plug and play mode. Simply
connecting the units to the line automatically configures the customer for the
maximum data rate supported by the local loop. M/SDSL units can also be
configured at fixed line speeds to achieve maximum distances.

7975-A2-GB20-40

December 1998

1-1

About the Hotwire 7975 Standalone Termination Unit

Hotwire 7975 Features

The Hotwire 7975 M/SDSL Standalone Termination Unit is an endpoint for the
chassis-mounted Hotwire 8775 M/SDSL Termination Unit housed in the Hotwire
8600 or 8800 Digital Subscriber Line Access Multiplexer (DSLAM).

Two Hotwire 7975 M/SDSL Standalone Termination Units can also be configured
to operate in a central office (CO) to customer premises (CP) environment.

The 7975 Standalone Termination Unit offers these standard features:

H AutoRate Capability. Provides automatic configuration of line speed and

data rate upon connection.

H Embedded Operations Channel (EOC). Provides remote SNMP Traps or

Telnet session capability over the M/SDSL network.

H Asynchronous T erminal Interface (ATI). Provides a menu-driven

VT100-compatible terminal interface for configuring and managing the
termination unit locally or remotely by Telnet session.

H Local Management. Provides local management using a:

— Terminal or PC via the COM port of the unit
— NMS connection through the 10BaseT port

H Remote Management. Provides remote management using:

— Terminal or PC via the Management Serial port of the DSLAM
— Network Management System (NMS) via the COM port or MCC port of

the DSLAM
— Telnet over the EOC
— External modem out-of-band
— Using SNMP or Telnet through the 10BaseT port or the Internal

Management Channel (IMC).

H Alarm Indication. Provides front panel status LEDs.
H Diagnostic Testing. Provides the capability to diagnose device and network

problems and perform tests, including digital loopbacks, pattern tests, and
self-test.

H Device and Performance Monitoring. Provides the capability of tracking

and evaluating the unit’s operation, including health and status, and error-rate
monitoring.

1-2

December 1998

7975-A2-GB20-40

Network Configuration

Figure 1-1 shows a network application using a 4-port Hotwire 8775 M/SDSL
Termination Unit for access concentration in a central office (CO). A frame relay
switch and a router are connected, through the termination unit, to partner units
supporting a host or router, and frame relay encapsulated or unframed data.

About the Hotwire 7975 Standalone Termination Unit

V.35

CO Site

Frame

Relay

Switch

Router

V.35

CO Site

LTU

7975 7975

V.35 V.35

V.35

V.35

8775 T ermination Unit

in 8600 DSLAM

2.048 Mb
over

SDSL

7975

V.35

7975

V.35

7975

Customer

Premises (CP)

E1 Host

(Frame Relay

Encapsulated

Data)

Router

(Frame Relay

Encapsulated

Router

Customer

Premises

NTU

Data)

98-15938

Figure 1-1. Sample M/SDSL Configurations

User Interface Types

There are three types of user interfaces to the 7975 Standalone Termination Unit:

H Menu-driven async terminal interface screens. See Chapter 2,

Asynchronous Terminal Interface

H Front panel LED status indicators. See Chapter 4,
H Internal DIP Switches. See Chapter 3,

7975-A2-GB20-40

December 1998

.

Monitoring the Unit

Initial Startup and Configuration

Using the

.

.

1-3

About the Hotwire 7975 Standalone Termination Unit

Front Panel LED Status Indicators

Figure 1-2 shows the front panel of the 7975 Standalone Termination Unit. For
more information on front panel LEDs, refer to Chapter 4,

TM

TM

7975 M/SDSL

Figure 1-2. Hotwire 7975 Standalone Termination Unit Front Panel

POWER

ALARM

Monitoring the Unit

TEST

DSL

.

DTE

98-15856

Rear Panel Interface Connections

Figure 1-3 shows the physical interfaces of the 7975 Standalone Termination
Unit.

POWER

I

O

Figure 1-3. Hotwire 7975 Standalone Termination Unit Rear Panel

DSLCOM

PORT

98-15880

1-4

December 1998

7975-A2-GB20-40

SNMP Management Capabilities

The termination unit supports SNMP Version 1, and can be managed by any
industry-standard SNMP manager and accessed using SNMP by external SNMP
managers.

Management Information Base (MIB) Support

For a detailed description of supported MIBs, visit Paradyne’s web site at
http://www.paradyne.com. The following MIBs are supported:

H MIB II (RFC 1213 and RFC 1573) – Defines the general objects for use with

a network management protocol in TCP/IP internets and provides general
information about the unit. MIB II is backward-compatible with MIB I.

H RS-232-Like MIB (RFC 1659) – Defines objects for managing RS-232-type

interfaces (e.g., V.35, RS-422, RS-423, etc.) and supports the synchronous
data port on the DSU.

H Enterprise MIB – Supports configuration, status, statistics, and tests.

About the Hotwire 7975 Standalone Termination Unit

SNMP Traps Support

Router

The 7975 Standalone Termination Unit supports traps as defined in
RFC 1215. They may include variable-bindings specified in the following MIBs:

H MIB II (RFC 1573) – Defines the general objects for use with a network

management protocol in TCP/IP internets and provides general information
about the 7975 Standalone Termination Unit. MIB II is backward-compatible
with MIB I.

H Enterprise MIB – Supports configuration, status, statistics, and tests.

Figure 1-4 illustrates a typical M/SDSL SNMP configuration. Refer to Chapter 8,

IP Addressing

V.35

and Appendix B,

SDSL

7975

EOC

Standards Compliance for SNMP Traps

Operation, Maintenance
and Provisioning Center

Network

AC
T5A
250V

RTN48V
AAB B

AC

INPUT

48VDC CLASS 2 OR
LIMITED PWR SOURCE

8600

DSLAM

8775

Alrm

TestTXRX

OK

SYSTEM

OK

Alrm

Test

SYSTEM

OK

Alrm

Test

SYSTEM

DC FUSES
T4A, MIN. 48V

5

46
3
2

1

.

STACK

A

B

POSITION

Col1234

ETHERNET

3

1

2

G.703 ALRM

3

1

2

G.703 ALRM

DC PWR

FAN

.
.

ALM

A

B

.

IN

DSL PORT

234

4

1

DSL PORT
LINK-UP

234

4

1

DSL PORT
LINK-UP

MCC 1

OUT SERIAL

Ethernet
Interface

8546

RADSL

8715

SDSL

8715

SDSL

3

2

3

2

1

SNMP NMS

.

Data

Voice

Figure 1-4. M/SDSL SNMP Configuration

7975-A2-GB20-40

December 1998

Ethernet

LAN

98-15858

1-5

About the Hotwire 7975 Standalone Termination Unit

This page intentionally left blank.

1-6

December 1998

7975-A2-GB20-40

Using the Asynchronous Terminal
Interface

User Interface Access

You can communicate with the Hotwire 7975 Standalone Termination Unit with an
asynchronous terminal interface (ATI) using one of the following methods:

H Direct connection through the COM port.
H Using an external modem through the COM port.
H Telnet session through the Embedded Operations Channel (EOC).

2

NOTE:

Only one asynchronous terminal interface session can be active at a time,
and another user’s session cannot be forced to end. To automatically log out
a user due to inactivity, enable the Inactivity Timeout option (see Table A-5,

Telnet Sessions Options, in Appendix A,

Security can limit ATI access several ways. To limit user access or set up login
IDs, refer to Chapter 7,

Communication Port Settings

Ensure that the device you connect communicates using these settings:

H Data rate set to 9.6 kbps.
H Character length set to 8.
H Parity set to None.
H Stop Bits set to 1.

Security

Configuration Option Tables

.

).

7975-A2-GB20-40

December 1998

2-1

Using the Asynchronous Terminal Interface

Initiating an ATI Session

The Main Menu screen is displayed on the screen unless a login ID and
password is required or the ATI is already in use.

If security is enabled on the 7975 Standalone Termination Unit and you used
Telnet to access it directly (you did not log in through the MCC), the system
prompts you for a login ID and password.

Login Hotwire

LOGIN

Login ID:

Enter Password:

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions E

Model: 7975

xit

After you enter a valid login ID and password, the Main Menu appears. If you
enter an invalid login ID and password after three attempts, the Telnet session
closes or the terminal connection returns to an idle state. Refer to Chapter 7,

Security

.

If the ATI is already in use, you will see a connection refused or
connection failed message (if you are using a Telnet session), or you will
see the IP address of the other user (if you are using the Management Serial
port).

2-2

December 1998

7975-A2-GB20-40

Using the Asynchronous Terminal Interface

Screen
Area

Screen
Function
Keys
Area

main Access Level: Administrator Hotwire

MAIN MENU

Status
Test
Configuration
Control

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions E

Model 7975

xit

Entry to all of the termination unit’s tasks begins at the Main Menu screen. The
four branches of the Main menu are as follows:

Select . . . To . . .

Status View system status, diagnostic test results, statistics, LEDs, and device

identity information.
Test Select and cancel tests for the termination unit’s interfaces.
Configuration Display and edit the configuration options.
Control Change the device identity , administer logins, download new firmware, or

initiate a power-up reset of the termination unit.

After selecting an option, what appears on the screens depends on the:

H Current configuration – How your termination unit is currently configured.
H Effective security access level – An access level that is typically set by the

system administrator for each interface and each user.

H Data selection criteria – What you entered in previous screens.

7975-A2-GB20-40

December 1998

2-3

Using the Asynchronous Terminal Interface

The following illustration shows the paths to the different ATI screens.

Main

System and

Test Status

Status Test

Performance

Statistics

Network

Error

Statistics

Network T ests SYNC Data

Display

LEDs

Network

Performance

Statistics

Port T ests

Identity

Device

T ests

Abort
T ests

Network Sync

All

Factory

Config

Port

Configuration Control

Change

Identity

Configuration

Loader

System

Options

Communication

Download

Code

Administer

Logins

Current Configuration

Edit/Display

Port

Telnet

Session

Communication

SNMP

Traps

Reset

AutoRate

Apply

Download

Management

and

Communication
Protocol Option

Reset

Device

98-15859

2-4

December 1998

7975-A2-GB20-40

Screen Work Areas

There are two user work areas:

H Screen area – This is the area above the dotted line that provides the menu

H Screen function key area – This is the area below the dotted line that lists

Menu Path

Using the Asynchronous Terminal Interface

path, menus, and input fields.
The menu path appears as the first line on the screen. In this manual, the

menu path is presented as a menu selection sequence with the names of the
screens:

Main Menu→Configuration →Load Configuration From→Network
Interface Options

function keys specific to the screen, field value choices, and system
messages.

Input
Fields

Screen

Function

Keys

Field V alue

Choices

main/config/network Hotwire

NETWORK INTERFACE OPTIONS

Margin Threshold: –3db
Excessive Error Rate Threshold: 1E–5
AutoRate: Enable

Peer IP Address: 111.255.255.000 Clear

Circuit Identifier:

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

ave

S
Select: 1E–4, 1E–5, 1E–6, 1E–7, 1E–8, 1E–9 LOS at Net, Pt

Model: 7975

Clear

ainMenu Exit

n

System

Messages

7975-A2-GB20-40

December 1998

2-5

Using the Asynchronous Terminal Interface

Navigating the Screens

You can navigate the screens by:

H Using keyboard keys
H Using screen function keys
H Switching between the two screen work areas

Keyboard Keys

Use the following keyboard keys to navigate within the screen.

Press . . . To . . .

Ctrl-a Move cursor between the screen area and the screen function

Esc Return to the previous screen.

keys area below the dotted line at the bottom of the screen.

Tab Move cursor to the next field on the screen.
Backspace Move cursor to the previous field on the screen.
Return (Enter) Accept entry or display valid options on the last row of the screen

when pressed before entering data or after entering invalid data.
Ctrl-k T ab backwards (move cursor one field to the left).
Spacebar Select the next valid value for the field.
Delete (Del) Delete character that the cursor is on.
Up Arrow or Ctrl-u Move cursor up one field within a column on the same screen.
Down Arrow or Ctrl-d Move cursor down one field within a column on the same screen.
Right Arrow or Ctrl-f Move cursor one character to the right if in edit mode.
Left Arrow or Ctrl-b Move cursor one character to the left if in edit mode.
Ctrl-l Redraw the screen display , clearing information typed in but not

yet entered.

" Procedure

To make a menu or field selection:

1. Press the Tab key or the right arrow key to position the cursor on a menu or

field selection. Each selection is highlighted as you press the key to move the
cursor from position to position.

2. Press Enter.

The selected menu or screen appears.

3. Continue Steps 1 and 2 until you reach the screen you want.

2-6

December 1998

7975-A2-GB20-40

Screen Function Keys

Using the Asynchronous Terminal Interface

The current setting or value appears to the right of the field name. You can enter
information into a selected field by:

H Typing in the first letter(s) of a field value or command.
H Switching from the screen area to the screen function area below the dotted

line and selecting or entering the designated screen function key.

If a field is blank and the Field Values screen area displays valid selections, press
the spacebar and the first valid value for the field will appear. Continue pressing
the spacebar to scroll through other valid values.

All screen function keys located below the dotted line operate the same way
(upper- or lowercase) throughout the screens.

For the screen
function . . .

Select . . . And press Enter to . . .

ClrFar F or f Clear far-end network statistics and refresh the screen.
ClrNear N or n Clear near-end network statistics and refresh the screen.
Delete L or l Delete data.
Exit E or e T erminate the async terminal session.
MainMenu M or m Return to the Main Menu screen.
New N or n Enter new data.
PgDn D or d Display the next page, or group of entries.
PgUp U or u Display the previous page, or group of entries.
ResetMon R or r Reset an active Monitor 511 test counter to zero.
Save S or s Save information.

7975-A2-GB20-40

December 1998

2-7

Using the Asynchronous Terminal Interface

Switching Between Screen Work Areas

Select Ctrl-a to switch between the two screen work areas to perform all screen
functions.

" Procedure

To access the screen function area below the dotted line:

1. Press Ctrl-a to switch from the screen area to the screen function key area

below the dotted line.

2. Select either the function’s designated (underlined) character or press the

Tab key until you reach the desired function key.

Example:

To save the current screen, type s or S (Save).

3. Press Enter.

4. To return to the screen area above the dotted line, press Ctrl-a again.

main/config/network Hotwire

NETWORK INTERFACE OPTIONS

Margin Threshold: –3db
Excessive Error Rate Threshold: 1E–5
AutoRate Disable
DSL Line rate 144

Peer IP Address: 111.255.255.000 Clear

Circuit Identifier:

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M
S

ave

Model: 7975

Clear

ainMenu Exit

2-8

December 1998

7975-A2-GB20-40

Ending an ATI Session

Use the Exit function key from any screen to terminate the session.

" Procedure

To end a session with the asynchronous terminal interface:

1. Press Ctrl-a to go to the screen function key area below the dotted line.

2. Save changes if required. A confirmation message appears if you have made

but not saved changes to your configuration.

Using the Asynchronous Terminal Interface

3. Tab to E

xit (or type e or E) and press Enter.

7975-A2-GB20-40

December 1998

2-9

Using the Asynchronous Terminal Interface

This page intentionally left blank.

2-10

December 1998

7975-A2-GB20-40

Initial Startup and Configuration

Overview

This chapter provides instructions on how to access and configure your unit for
the first time. This chapter includes procedures for:

H Connecting power to the unit.
H Connecting the unit to the network.
H Connecting a system terminal.
H Providing initial unit identity information or changing existing identity

information.

H Configuring your unit using internal switchpacks or using the Configuration

Edit menus.

H Choosing the current or factory default configuration options or downloading

configuration options from a TFTP server.

H Modifying current configuration options using the Configuration Edit/Display

menu.

H Saving your changes.
H Downloading unit firmware from a TFTP server.

3

7975-A2-GB20-40

December 1998

3-1

Initial Startup and Configuration

Connecting Power to the Unit

If your package includes a power pack:

Plug the power pack into an ac outlet
having a nominal voltage rating between 100–240 Vac. Connect the output cable
of the power pack to the connector marked POWER on the rear panel.

If your package includes a direct-connection dc power cable:

an external dc power source as described in

External DC Power Source

.

Connecting the Unit to an Optional

Connecting the Unit to an Optional External DC Power Source

Use the following procedures only if you want to use the dc power cable.

Using the dc power cable, the Hotwire 7975 Standalone Termination Unit is
capable of operating on a +24 Vdc power supply.

" Procedure

To use the dc power cable:

1. Connect the green wire to a suitable earth ground.

2. Connect the orange wire to the +24 Vdc source.

3. Connect the white wire to the return.

4. Cut the black, red, and blue wires off at the outer insulation.

Connect the unit to

5. Plug the power connector into the 7975 Standalone Termination Unit.

1
2
3
4
5
6

Black

Red

Green

White

Orange

Blue

X
X

Earth Ground
RTN

+24 Vdc
X

98-14158-01

+24 Vdc Power Supply Pinouts

3-2

December 1998

7975-A2-GB20-40

Connecting to the Network

" Procedure

To connect your unit to the network:

1. Connect one end of the network cable into the rear panel DSL jack. Connect
the other end to your DSL network interface.

NOTE:

Do

not

use a flat VF network cable as this may severely degrade the
performance of the termination unit. Use only Cat 5 twisted-pair network
cable.

Connecting to a System Terminal

An optional system maintenance terminal may be attached to your Hotwire 7975
Standalone Termination Unit through the modular jack on the rear panel. You may
have terminals attached to both endpoints. The system terminal must be a
VT100-compatible terminal or a PC running terminal emulation software.

Initial Startup and Configuration

The system maintenance terminal allows you to view the status of the unit, and
change configuration options.

Connect the 9-pin end of the terminal cable into a COM port on your PC. Plug the
other end into the modular jack on the rear panel. If your PC requires a 25-pin
connector to the COM port, see Appendix C,
correct cable pinouts.

Make sure the communication parameters on your PC or terminal are set to:

H 9600 baud
H 8 bit characters
H no parity
H 1 stop bit
H no flow control

Press Enter from your terminal or PC to activate the Main Menu for the attached
unit. The system runs diagnostics and status checks. After a few moments, the
Main Menu or Logon screen appears on your terminal.

Cables and Pin Assignments

, for the

7975-A2-GB20-40

December 1998

3-3

Initial Startup and Configuration

Entering Identity Information

After accessing your unit for the first time, use the Change Identity screen to
determine SNMP administrative system information that will be displayed on the
Identity screen of the Status branch. To access the Card Identity screen, follow
this menu selection sequence:

Main Menu→Control→Change Identity

main/control/change_identity Hotwire

IDENTITY

System Name: lllQJ98-001
System Location: Bldg. A412, 2nd Floor, Left cabinet
System Contact: C. Parker 800-727-2396 pager 888-555-1212 Clear

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M
S

ave

Model: 7975

Clear
Clear

ainMenu Exit

The three System entry fields are alphanumeric and provide 128 characters for
each field. The System entries appear on the Identity display as shown above.
The SNMP System entry fields are:

H System Name: The general SNMP system name.
H System Location: The physical location of the SNMP-managed device.
H System Contact: Identification information, such as contact name, phone

number, or mailing address.

Valid entry values are any printable ASCII character. ASCII printable characters
include:

H Numeric 0–9
H Upper or lower case A–Z
H Space
H All ASCII symbols except the caret (^)

Select Clear to reset a field to a null value.

3-4

December 1998

7975-A2-GB20-40

Initial Startup and Configuration

" Procedure

To enter Change Identity screen information:

1. Position the cursor in the System Name field. Enter a name unique in your
network to identify the SNMP managed node (or unit).

The maximum length of System Name is 128 characters.

2. Position the cursor in the System Location field. Enter the physical location of
the unit.

The maximum length of System Location is 128 characters.

3. Position the cursor in the System Contact field. Enter the name and contact
information for the person responsible for the unit.

The maximum length of System Contact is 128 characters.

4. Press Ctrl-a to switch to the screen function key area below the dotted line.

5. Select S

ave and press Enter.

Choosing a Configuration Mode

You can make configuration changes either through a VT100 and the unit’s
Configuration menus or by manually changing switches on the board. The unit
comes defaulted to allow settings to be made through the Configuration menus.

Configuring the Unit Using the Configuration Menus

Use the Configuration menu branch of the unit to display or change configuration
option settings.

Configuration Options

The 7975 Standalone Termination Unit is shipped with factory settings in the
Default Factory configuration area. You can find default information by:

H Referring to Appendix A,
H Accessing the Configuration branch of the 7975 Standalone Termination Unit

menu.

The 7975 Standalone Termination Unit has two sets of configuration option
settings. The Current Configuration matches the Default Factory Configuration
until modified and saved by the user.

Configuration Option Tables

.

Configuration Option Area

Current Configuration The 7975 Standalone Termination Unit’s active set of

Default Factory Configuration A read-only configuration area containing the factory

If the factory default settings do not support your network’s configuration, you can
customize the configuration options for your application.

7975-A2-GB20-40

Configuration Option Set

configuration options.

default configuration options.

December 1998

3-5

Initial Startup and Configuration

Configuring the Unit Using the Internal Switches

Use internal Switchpacks S1 and S2 to manually configure the unit. Use
Figure 3-1 to locate Switchpacks S1 and S2.

!

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

496-15104

" Procedure

proper static control precautions, contact your nearest sales or service
representative.

To configure the unit using internal Switchpacks S1 and S2:

1. Power down the unit and remove the enclosure cover, exposing the circuit
board.

2. Locate Switchpack S1 using Figure 3-1.

3. Set switch 1 on Switchpack S1 to ON to enable Switchpacks 1 and 2.

4. After you enable the switchpacks, you must set the switches to your desired
configuration. Refer to Figure 3-1 and Table 3-1.

5. Replace and secure the cover.

6. Power up the board to reset and enable the new configuration.

3-6

December 1998

7975-A2-GB20-40

Switchpack Locations

Use Figure 3-1 to locate Switchpacks S1 and S2.

Switchpack S1 & S2

ON

12345

678

ON

12345

678

Front

S2

S1

Initial Startup and Configuration

Rear

98-15937

Figure 3-1. Hotwire 7975 Standalone Termination Unit Switchpack Locations

7975-A2-GB20-40

December 1998

3-7

Initial Startup and Configuration

Switchpack Definitions

Manually change configuration options by moving Switchpack S1 DIP switches
on the card. Table 3-1 lists Switchpack S1 definitions.

Table 3-1. Switchpack S1 Definitions
Switch # . . . Allows you to . . .

1 Enable or disable Switchpacks S1 and S2.

OFF = Switchpacks Disabled

ON = Switchpacks Enabled

2 Control Sync Port Type.

OFF = EIA-530, RS-449, or X.21

ON = V.35

3 Select the unit’s timing source. Only valid for LTU configured units.

OFF = Internal clock

ON = External Clock

4, 5, 6, 7, 8 Control Sync Port Data Rate (refer to Table 3-2, Selectable Payload

Rates)

NOTE: Switches 4 through 8 are only used when the unit is

configured as an L TU and AutoRate is disabled.

All OFF = 2048 kbps (1024 kbps for 1Mbps units)

Default in Bold

Use Table 3-2 to set the Sync Port Payload Rate. Defaults are shown in bold.

NOTE:

Sync Port and DSL Line Rates can only be selected from units configured as
LTU (Switchpack S2 #1) with AutoRate disabled (Switchpack S2 #2).

3-8

December 1998

7975-A2-GB20-40

Initial Startup and Configuration

DSL Li

Table 3-2. Selectable Payload Rates (Switches 4–8 on Switchpack S1)

Switch Number

Sync Port Payload Rate

2048 kbps (32 x 64) OFF OFF OFF OFF OFF 2064 kbps

1984 kbps (31 x 64) ON ON ON ON ON 2064 kbps
1920 kbps (30 x 64) ON ON ON ON OFF 2064 kbps
1856 kbps (29 x 64) ON ON ON OFF ON 2064 kbps
1792 kbps (28 x 64) ON ON ON OFF OFF 2064 kbps
1728 kbps (27 x 64) ON ON OFF ON ON 2064 kbps
1664 kbps (26 x 64) ON ON OFF ON OFF 2064 kbps
1600 kbps (25 x 64) ON ON OFF OFF ON 2064 kbps
1536 kbps (24 x 64) ON ON OFF OFF OFF 1552 kbps
1472 kbps (23 x 64) ON OFF ON ON ON 1552 kbps
1408 kbps (22 x 64) ON OFF ON ON OFF 1552 kbps
1344 kbps (21 x 64) ON OFF ON OFF ON 1552 kbps
1280 kbps (20 x 64) ON OFF ON OFF OFF 1552 kbps
1216 kbps (19 x 64) ON OFF OFF ON ON 1552 kbps
1152 kbps (18 x 64) ON OFF OFF ON OFF 1552 kbps
1088 kbps (17 x 64) ON OFF OFF OFF ON 1552 kbps
1024 kbps (16 x 64) ON OFF OFF OFF OFF 1040 kbps
960 kbps (15 x 64) OFF ON ON ON ON 1040 kbps
896 kbps (14 x 64) OFF ON ON ON OFF 1040 kbps
832 kbps (13 x 64) OFF ON ON OFF ON 1040 kbps
768 kbps (12 x 64) OFF ON ON OFF OFF 784 kbps
704 kbps (11 x 64) OFF ON OFF ON ON 784 kbps
640 kbps (10 x 64) OFF ON OFF ON OFF 784 kbps
576 kbps (9 x 64) OFF ON OFF OFF ON 784 kbps
512 kbps (8 x 64) OFF ON OFF OFF OFF 528 kbps
448 kbps (7 x 64) OFF OFF ON ON ON 528 kbps
384 kbps (6 x 64) OFF OFF ON ON OFF 400 kbps
320 kbps (5 x 64) OFF OFF ON OFF ON 400 kbps
256 kbps (4 x 64) OFF OFF ON OFF OFF 272 kbps
192 kbps (3 x 64) OFF OFF OFF ON ON 272 kbps
128 kbps (2 x 64) OFF OFF OFF ON OFF 144 kbps
64 kbps (1 x 64) OFF OFF OFF OFF ON 144 kbps

8 7 6 5 4

Associated

ne

i

Rate

––––––––––––––– 2 Mbps Units Only –––––––––––––––––

NOTE:

The 1 Mbps unit Payload Rate is defaulted to 1024 kbps (all OFF).

7975-A2-GB20-40

December 1998

3-9

Initial Startup and Configuration

Table 3-3 lists Switchpack S2 definitions.

Table 3-3. Switchpack S2 Definitions
Switch # . . .

1 Control whether the unit is an LTU or an NTU.

2 Control enabling and disabling of the AutoRate capability.

3, 4, 5 Select one of eight preset DSL line rates (refer to Table 3-4).

6, 7 Not used
8 Emergency Use Only – The 7975 has two banks of flash memory

Allows you to . . .

OFF = NTU

ON = LTU

OFF = AutoRate Enabled

ON = AutoRate Disabled

All OFF = 2064 (1040 for 1 Mbps units )

used to hold executable firmware. This switch allows you to switch
between the two versions of firmware. This switch is independent from
the position of Switch 1 on Switchpack S1 (switchpack enable/disable).

OFF = Current Firmware

ON = Previous Firmware

Default in Bold

Use Table 3-4 to set the DSL Line Rate. Defaults are shown in bold.

Table 3-4. DSL Line Rate, Switches 3–5 on Switchpack S2

Switch Position
5 4 3

OFF OFF ON 144 kbps
OFF ON OFF 272 kbps
OFF ON ON 400 kbps
ON OFF OFF 528 kbps
ON OFF ON 784 kbps
ON ON OFF 1040 kbps
ON ON ON 1552 kbps (2 Mbps unit only)
OFF OFF OFF 2064 kbps (2 Mbps unit only)

DSL Line Rate

NOTE:

The 1 Mbps unit DSL line rate is defaulted to 1040 kbps (all OFF)

3-10

December 1998

7975-A2-GB20-40

Accessing and Displaying Configuration Options

To display configuration options, you must first load a configuration into the edit
area.

To load a configuration option set into the configuration edit area, follow this
menu selection sequence:

Main Menu→Configuration (Load Configuration From)

Initial Startup and Configuration

main/configuration Hotwire

LOAD CONFIGURATION FROM:

Current Configuration
Configuration Loader
Default Factory Configuration

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Model: 7975

ainMenu Exit

Make a selection by placing the cursor at your choice and pressing Enter.

If you select . . .

Current
Configuration

Default Factory
Configuration

Then . . .

The selected configuration option set is loaded and the
Configuration Edit/Display menu screen appears.

The selected configuration option set is loaded and the
Configuration Edit/Display menu screen appears.

Configuration
Loader

7975-A2-GB20-40

The Configuration Loader screen is displayed allowing you to
upload or download configurations from a TFTP server.

December 1998

3-11

Initial Startup and Configuration

Configuration Edit/Display

The Configuration Edit/Display screen is displayed when the current, customer, or
default configuration is loaded. To access the Configuration Edit/Display screen,
follow this menu selection sequence:

Main Menu→Configuration →Current Configuration

–

or –

Main Menu→Configuration →Default Factory Configuration

main/config/edit Hotwire

CONFIGURATION EDIT/DISPLAY

Network
SYNC Port
System Options
Communication Port
Management and Communication

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M
S

ave

See Appendix A,

Configuration Option Tables

, for a list and explanation of the

Model: 7975

ainMenu Exit

configuration options available.

Select . . .

Network Network Interface Options, Table A-1 DSL network interfaces on

SYNC Port Synchronous Data Port Options,

To Access the . . . To Configure the . . .

the unit.
Synchronous DTE interface

Table A-2

Ports.

System
Options

Communication
Port

Management
and
Communication

3-12

System Options, Table A-3 General system options of

the unit.

Communication Port, Table A-4 Unit’s COM port options.

H Telnet Sessions Options,

Table A-5

H Communication Protocol Options,

Management support of the
unit through SNMP and
Telnet.

Table A-6

H SNMP Traps Options, Table A-7
H General SNMP Management

Options, Table A-8

H SNMP NMS Security Options,

Table A-9

December 1998

7975-A2-GB20-40

Configuring AutoRate

The M/SDSL AutoRate function is controlled from the Network Interface Options
screen and allows you to enable or disable AutoRate from a unit configured as an
LTU. To access the Network Interface screen, follow this menu selection
sequence:

Main Menu→Configuration →Network

Initial Startup and Configuration

main/config/network Hotwire

NETWORK INTERFACE OPTIONS

Margin Threshold: –3db
Excessive Error Rate Threshold: 1E–5
AutoRate Disable
DSL Line Rate 144

Circuit Identifier: Clear

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

ave

S

Model: 7975

ainMenu Exit

" Procedure

The AutoRate option is defaulted to Enable. To disable AutoRate:

1. Position the cursor in the AutoRate field and press the spacebar.
The AutoRate field toggles to Disable and the DSL Line Rate field displays.

2. Enter a DSL Line Rate and press Enter.
Your payload rate is set to a default value determined by your LTU DSL Line

Rate. Use Table 3-5, Fixed Rate Payload Rates and DSL Line Rates, to set
your DSL Line Rate and Payload Rate.

7975-A2-GB20-40

December 1998

3-13

Initial Startup and Configuration

P

Table 3-5. Fixed Rate Payload Rates and DSL Line Rates

144 272 400 528 784 1040 1552 2064

64 192 320 448 576 832 1088 1600
128 256 384 512 640 896 1152 1664

a
y

l

o

a

d

R

a

t

e

DSL Line Rate (kbps)

2 Mbps units

704 960 1216 1728
768 1024 1280 1792

1344 1856
1408 1920
1472 1984
1536 2048

Configuration Loader

The Configuration Loader screen allows you to upload configurations to and
download configurations from a TFTP server. To access the Configuration Loader
screen, follow this menu selection sequence:

Main Menu→Configuration →Configuration Loader

main/config/config_loader Hotwire

Image File Name:
TFTP Server IP Address: 000
TFTP Transfer Direction: Download from Server

Start Transfer: Yes

Packets Sent: 0000000
Packets Received: 0000000
Bytes Sent: 0000000
Bytes Received: 0000000
Transfer Status: Transfer Pending

Activate new configuration? No
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Model: 7975

CONFIGURATION LOADER

Clear

.000.000.000 Clear

Destination: DSL

ainMenu Exit

3-14

December 1998

7975-A2-GB20-40

Initial Startup and Configuration

" Procedure

To upload or download a configuration:

1. Position the cursor in the Image File Name field. Type the name of the file to
be downloaded, or the name to be used for the file to be uploaded.

The file name may be a regular path name expression of directory names
separated by a forward slash (/) ending with the file name. The total path
name length can be up to 128 characters.

DOS machine:

directory and file names must consist of eight or less characters with an
optional suffix of up to three characters. The system will automatically upload
the configuration file and create directories and file names as needed.

UNIX machine:

file you name must already exist. It will not be created on the UNIX system by
the TFTP server. It is critical that you work with your system administrator to
plan the naming conventions for directories, filenames, and permissions so
that anyone using the system has read and write permissions.

2. Position the cursor in the TFTP Server IP Address field. Enter the TFTP
server IP address.

If the TFTP server is hosted by a DOS machine, then

If your server is hosted by a UNIX machine, the configuration

3. Position the cursor in the Destination field. Use the spacebar to select a
network destination for the TFTP server. Select DSL if the TFTP server
destination is the DSL link or COM if the TFTP destination is the COM port.

4. Position the cursor in the TFTP Transfer Direction field. Use the spacebar to
select Download from Server or Upload to Server.

5. Position the cursor at the Start Transfer field. Use the spacebar to select Yes.
Press Enter.

When the data transfer is complete, the Transfer Status field changes to
Completed successfully.

6. Position the cursor at the Activate New Configuration field and select Yes to
activate a new downloaded configuration. Press Enter.

NOTE:

The configuration options DSL Mode and Telnet Session are not changed
when a new configuration is loaded. You must change these settings with the
appropriate configuration menus after the new configuration is activated. See
Table A-3, System Options, and Table A-5, Telnet Sessions Options, in
Appendix A,

Configuration Option Tables

.

7975-A2-GB20-40

December 1998

3-15

Initial Startup and Configuration

Saving Configuration Options

When changes are made to the configuration options through the Configuration
Edit/Display branch, the changes must be saved to take effect. Use the S
or Save Configuration screen.

" Procedure

To save configuration options changes:

1. Press Ctrl-a to switch to the screen function key area below the dotted line.

2. Select Save and press Enter.

NOTE:

When Exit is selected before Save, or Save has been selected from any
menu in the Configuration/Edit branch, a Save Configuration screen appears
requiring a Yes or No response.

ave key

main/config/saveprompt Hotwire

SAVE CONFIGURATION

Save Changes? No

WARNING:

An answer of “yes” will cause the system
to reset as if it had been powered off and on!

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Command Complete

Model: 7975

ainMenu Exit

If the Telnet Session configuration option is changed, a message displays on the
Save Configuration screen warning that an answer of Yes will cause the Telnet
session to disconnect. Do not answer Yes unless you are prepared to disconnect.

If the DSL Mode configuration option is changed, a message displays on the
Save Configuration screen warning that an answer of Yes will cause the system
to reset. Do not answer Yes unless you are prepared to reset.

If you select . . .

Then . . .

Yes The configuration is saved.
No The Main Menu appears and changes are not saved.

3-16

December 1998

7975-A2-GB20-40

Download Code

Initial Startup and Configuration

The Download Code screen allows you to download firmware from a TFTP
server. To access the Download Code screen, follow this menu selection
sequence:

Main Menu→Control →Download Code

main/control/download_code Hotwire

DOWNLOAD CODE

Image File Name:
TFTP Server IP Address: 000

Destination: DSL

Start Transfer: Yes

Packets Sent: 0000000
Packets Received: 0000000
Bytes Sent: 0000000
Bytes Received: 0000000
Transfer Status: Transfer Pending

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

.000.000.000 Clear

Model: 7975

ainMenu Exit

" Procedure

To download firmware:

1. Position the cursor in the Image File Name field. Type the name of the file to
be downloaded.

The file name may be a regular path name expression of directory names
separated by a forward slash (/) ending with the file name. The total path
name length can be up to 128 characters.

Clear

2. Position the cursor in the TFTP Server IP Address field. Enter the TFTP
server IP address.

The first three digits of the IP address cannot be 000 or greater than 223.

3. Position the cursor in the Destination field. Use the spacebar to select a
network destination for the TFTP server. Select DSL if the TFTP server
destination is the DSL link or COM if the TFTP destination is the COM port.

4. Position the cursor at the Start Transfer field. Use the spacebar to select Yes.
Press Enter.

When the data transfer is complete, the Transfer Status field changes to
Completed successfully.

5. Press the Escape key to return to the Control menu. Select Apply Download.

6. On the Apply Download screen, select Yes to reset the card and activate the
code.

7975-A2-GB20-40

December 1998

3-17

Initial Startup and Configuration

This page intentionally left blank.

3-18

December 1998

7975-A2-GB20-40

Monitoring the Unit

What to Monitor

This chapter presents information on how to access and monitor Hotwire 7975
Standalone Termination Units on the E1 network. You can monitor 7975
Standalone Termination Unit operations by viewing:

H System and Test Status screens
H Highest priority Health and Status messages on the last line of all screens

4

H Network Error Statistics screen
H Network Performance Statistics screen
H Display LEDs screen or LEDs on the 7975 Standalone Termination Unit front

panel

7975-A2-GB20-40

December 1998

4-1

Monitoring the Unit

Viewing System and Test Status

To view System and Test Status information, follow this menu selection
sequence:

Main Menu→Status→System and Test Status

main/status/system Hotwire
Model: 7975

HEALTH AND STATUS SELF-TEST RESULTS TEST STATUS
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
LOS at Net, Pt 1 CPU Failed No Test Active
OOF at Net, Pt 1 Device Failed LLB Test Active, Pt 1
EER at Net, Pt 1 Net DSL Failed, Pt 1 RLB Test Active, Pt 1
SYNC Pt Down, Pt 1 SYNC Pt Failed, Pt 1 DTLB Test Active, Pt 1
Net Margin Threshold, Pt 1 Memory Failed DCLB Test Active, Pt 1
Fallback Rate, Pt 1 Failure
Devise Failed
Download Failed
Net Com Link Down
Mismatch Rate, Pt 1

yyyyyyyy

SYSTEM AND TEST STATUS Page 1 of 1

Passed Lamp Test Active

xxxxxxxx

511 Test Active, Pt 1

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
ESC for previous menu M

p PgDn

PgU

ainMenu Exit

The System and Test Status screen has three sections:

H Health and Status – Displays messages in priority order (highest to lowest).

Refer to Table 4-1, Health and Status Messages.

H Self-Test Results – Results of the Diagnostic test run on the device itself.

Refer to Table 4-2, Self-Test Results Messages.

H Test Status – Currently active tests. Refer to Table 4-3, Test Status

Messages.

4-2

December 1998

7975-A2-GB20-40

Health and Status

Monitoring the Unit

The following messages can appear in the first column of the System and Test
Status screen. The highest priority Health and Status message also appears on
all ATI screens on the bottom right.

Table 4-1. Health and Status Messages

Message

System
Operational

LOS at Net, Pt 1 An LOS (Loss Of Signal)

OOF at Net, Pt 1 Three consecutive frame

EER at Net, Pt 1 An EER (Excessive Error

SYNC Pt Down,
Pt 1

What Message Indicates What To Do

There are no problems
detected.

condition has been detected
on the network interface. No
signal is being received on
Port 1, possibly due to a local
network problem.

synchronization bits were in
error.

Rate) condition has been
detected on the network
interface at Port 1. The
condition is cleared when the
error rate falls below the
threshold value currently
configured.

The interchange circuits for
Port 1 are configured to
monitor DTR and/or RTS, and
a monitored lead is not
asserted.

1. Verify that the network cable is
securely attached at both ends.

2. Contact network provider.

1. Check the Transmit Clock Source
configuration options. Do not set
both the local and remote unit to
Internal, External, or Loop timing.

2. Contact network provider.

Contact network provider.

Verify that the DTE is providing the
monitored signals.

Net Margin
Threshold, Pt 1

Fallback Rate,
Pt 1

DeviceFailed

yyyyyyyy

Download Failed A firmware download was

7975-A2-GB20-40

The signal-to-noise margin
has exceeded the configured
threshold for Port 1.

The L TU, set to AutoRate
enable, had a LOS when the
line was restored and
resynched at a lower rate.

An internal error has been
detected by the operating
software.
the 8-digit hexadecimal failure
code.

interrupted.

yyyyyyyy

December 1998

indicates

Contact network provider.

Reset the Termination Unit if the
units do not automatically train up at
the previous rate.

1. Provide the 8-digit failure code
shown (
representative.

2. Reset the 7975 Standalone
Termination Unit to clear the
condition and message.

Repeat the download.

yyyyyyyy

) to your service

4-3

Monitoring the Unit

re resentative for assistance

Table 4-1. Health and Status Messages

Message What T o DoWhat Message Indicates

Self-Test Results

Net Com Link
Down

Mismatch Rate,
Pt 1

The Network communication
link is down. Communications
between the management
system and the L TU/NTU is
not possible.

The L TU, in fixed rate, is
attempting to communicate at
a faster rate than the NTU
can handle.

1. Verify that the network cable is
securely attached at both ends.

If the L TU is a 2 Mbps product:

1. Verify endpoint is not a 1 Mbps
product

2. Upgrade remote unit to a 2 Mbps

The results of the last power-up or reset self-test appear in the middle column of
the System and Test Status screen.

Table 4-2. Self-Test Results Messages
Message What Message Indicates What To Do

CPU Failed The CPU failed internal testing.
DeviceFailed One or more of the 7975 Standalone

Termination Unit’s integrated circuit
chips has failed device-level testing.

1. Reset the unit and try again.

2. Call your service
representative for assistance.

Net DSL
Failed, Pt 1

SYNC Pt
Failed, Pt 1

Memory
Failed

Failure

xxxxxxxx

Passed No errors were detected.

The 7975 Standalone Termination
Unit failed to loop data on the
network DSL circuit of Port 1.

The 7975 Standalone Termination
Unit failed to internally loop data on
the synchronous Port 1.

The 7975 Standalone Termination
Unit failed memory verification.

An internal failure occurred.

(xxxxxxxx

hexadecimal failure code for use by
service personnel.)

represents an 8-digit

1. Reset the unit and try again.

2. Call your service
representative for assistance.

Record the failure code and
contact your service
representative.

.

4-4

December 1998

7975-A2-GB20-40

Test Status

Monitoring the Unit

The Test Status messages in the following table appear in the right column of the
System and Test Status screen.

Table 4-3. Test Status Messages
Test Status Message

No Test Active No tests are currently running.
LLB Test Active, Pt 1 A network Line Loopback test is active on Port 1.
RLB Test Active, Pt 1 A network Repeater Loopback test is active on Port 1.
DTLB Test Active, Pt 1 A Data T erminal Loopback test is active on Port 1.
DCLB Test Active, Pt 1 A Data Channel Loopback test is active on Port 1.
511 Test Active, Pt 1 A 511 Test and Monitor is active on the DSL Port 1 network

Lamp Test Active The Lamp Test is active, causing the LEDs on the front panel to

Meaning

interface.

light.

7975-A2-GB20-40

December 1998

4-5

Monitoring the Unit

Viewing Network Error Statistics

The 7975 Standalone Termination Unit maintains error statistics on the network
DSL interface for port 1. Statistics are maintained for up to 96 15-minute intervals
(24 hours).

To view the Network Error Statistics, follow this menu selection sequence:

Main Menu→Status→Performance→Network Error Statistics

main/status/performance/net_error Hotwire
Model: 7975
NETWORK ERROR STATISTICS

Current Interval Timer: 2 Error Events Counter: 34
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
–––ES––– –––SES––– ––FEBE–– –Complete–

Current Int: 000 000 000 000 000 000 Yes No
Interval 01
Interval 02 000 000 000 000 000 000 Yes Yes
Interval 03 000 000 000 000 000 000 Yes Yes
Interval 04
Interval 05 000 000 000 000 000 000 Yes Yes
Interval
Interval 07

Near Far Near Far Near Far Near Far

000 000 000 000 000 000 Yes Yes

000 000 000 000 000 000 Yes Yes

06

000 000 000 000 000 000 Yes Yes
000 000 000 000 000 000 Yes Yes

Worst Interval: 24 09 14 08 18 18
Near Tot(valid): 00010 00000 00000
Far Tot(valid): 00010 00000 00000
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl–a to access these functions, ESC for previous menu M

p PgDn ClrNear ClrFar

PgU

ainMenu Exit

Network Error Statistics are collected for:

H ES (Errored Seconds): Seconds during which one or more ESF error events

occurred.

H SES (Severely Errored Seconds): Seconds during which more than

320 cyclic redundancy check (CRC) error events or at least one Out of Frame
(OOF) event occurred.

H FEBE (Far-End Block Errors): Errors reported by the remote equipment.
H Complete: Whether the interval register contains data for a complete

900-second interval.

4-6

December 1998

7975-A2-GB20-40

Monitoring the Unit

Use the virtual function keys to page through the intervals and clear statistics.

This Field . . . Contains . . .

Current Interval
Timer

Error Events
Counter

Current Interval Performance data for the current 15 minutes.
Interval

Worst Interval The number of the interval with the worst (highest) performance

Near and Far TOT A running total of the near- and far-end performance statistics.

xx

The number of seconds which have elapsed in the current
15-minute interval. Maximum value is 900 seconds (15 minutes).
This counter resets every 15 minutes.

A running total of CRC errors. Range 0 – 65535. This counter
resets when the near-end data is cleared.

Historical performance data for up to 96 15-minute intervals

xx

(24 hours) where the value of

data for both the near- and far-end statistics. If two or more
intervals are equal, the oldest interval is displayed.

is from 01 to 96.

7975-A2-GB20-40

December 1998

4-7

Monitoring the Unit

Viewing Network Performance Statistics

Network performance statistics allow you to monitor the current status of the
network DSL operations. Performance statistics can assist you in determining the
duration of specific conditions and provide a historical context for problem
detection and analysis. Statistics are maintained for up to 96 15-minute intervals
(24 hours).

To view the Network Performance Statistics, follow this menu selection sequence:

Main Menu→Status→Performance→Network Performance Statistics

main/status/performance/net_perf Hotwire
Model: 7975
NETWORK PERFORMANCE STATISTICS

Current Interval Timer: 2 DSL Line Rate: 2048 kbps
–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
––Mrgn–– ––XmtPw– ––RxGn–– –Complete–

Current Int: +02 +01 +03 +03 +02 +02 Yes Yes
Interval 01
Interval 02
Interval 03
Interval 04
Interval 05
Interval 06
Interval 07

Near Far Near Far Near Far Near Far

+02 +03 +02 Yes No
+02 +01 +03 +03 +02 +02 Yes Yes
+02 +01 +03 +03 +02 +02 Yes Yes
+02 +01 +03 +03 +02 +02 Yes Yes
+02 +01 +03 +03 +02 +02 Yes Yes
+02 +01 +03 +03 +02 +02 Yes Yes
+02 +01 +03 +03 +02 +02 Yes Yes

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl–a to access these functions, ESC for previous menu M
PgU

p PgDn ClrNear ClrFar

ainMenu Exit

Use the virtual function keys to scroll through the intervals and clear statistics.
Network Performance Statistics are collected for:

H Mrgn: Margin, the signal-to-noise ratio (SNR) less an SNR reference value.
H XmtPw: The transmit power level.
H RxGn: The receiver gain level.
H Complete: Whether the interval register contains data for a complete

900-second interval.

4-8

December 1998

7975-A2-GB20-40

This Field . . . Contains . . .

Monitoring the Unit

Current Interval
Timer

DSL Line Rate The rate of the DSL line.
Current Interval Performance data for the current 15 minutes.
Interval

xx

The number of seconds which have elapsed in the current
15-minute interval. Maximum value is 900 seconds (15 minutes).
This counter resets every 15 minutes.

Historical performance data for up to 96 15-minute intervals
(24 hours) where the value of

xx

Viewing 7975 Standalone Termination Unit LEDs

The 7975 Standalone Termination Unit LEDs can be viewed on the Display LEDs
Status screen. This ATI status screen is available locally and remotely.

The 3 groups of LEDs are:

H General LEDs display the status of the unit
H Sync Port LEDs provide the status of the DTE interface
H DSL Loop LEDs display the activity on the DSL network

To view the LED status screen, follow this menu selection sequence:

Main Menu→Status→Display LEDs

is from 01 to 96.

main/status/leds Hotwire

DISPLAY LEDs

GENERAL SYNC PORT DSL LOOP

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

ALRM:Off P1:No DTR/RTS P1:Lnk Up
TEST Off

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

ESC for previous menu M

Model: 7975

ainMenu Exit

The LED status display screen is updated every 5 seconds. For information about
the meaning of 7975 Standalone Termination Unit LEDs, see

Termination Unit LEDs

on page 4-10.

7975 Standalone

7975-A2-GB20-40

December 1998

4-9

Monitoring the Unit

7975 Standalone Termination Unit LEDs

The following table contains a description of the LEDs on the 7975 Standalone
Termination Unit front panel.

TM

TM

7975 M/SDSL

Type LED LED is . . . Indicating . . .

POWER

ALARM

TEST

DSL

DTE

98-15856

SYSTEM

POWER Green

Off
Flashing

ALARM Red

Off

TEST Yellow

Yellow,
flashing

Off

DSL DSL Green

Amber

Amber,
flashing

Off

SYNC Port DTE Green

Amber

Amber,
flashing

Unit has power.
No power to the Unit.
Unit is in minimum mode and a download is

required.
Device failure, or Power-On Self-Test (POST)

is not complete.
Self test passed.

Loopback test or 51 1 test pattern in progress.
Self test in progress.

No tests.
DSL link is up.

DSL training in progress.

An OOF condition exists.

The DSL Link is down.
Interchange circuits for the port are in the

correct state to transmit and receive data.
The port is configured to monitor DTR and/or

RTS and no monitored lead is asserted.
The Data Channel or Data Terminal loopback

is active.

4-10

December 1998

7975-A2-GB20-40

Testing

Accessing the Test Menu

From the Test menu, you can run network tests, data port tests, and a lamp test
for the front panel LEDs.

To access the Test menu, follow this menu selection sequence:

Main Menu→Test

5

main/test Hotwire

TEST

Network Tests
SYNC Data Port Tests
Device Tests

Abort All Tests

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Select . . . To . . .

Network Tests Start and stop tests on the network interface.
SYNC Data Port Tests Start and stop tests on the SYNC Port interface.
Device Tests Start and stop lamp test.
Abort All Tests To abort all current tests. Network-initiated tests will not

be affected. An aborted test may continue to run for a
few seconds as the abort command is sent to the
remote end and processed.

Model: 7975

ainMenu Exit

7975-A2-GB20-40

December 1998

5-1

Testing

Running Network Tests

Network tests require the participation of your network service provider. To
access the Network Tests screen, follow this menu selection sequence:

Main Menu→Test→Network Tests

main/test/network Hotwire

NETWORK TESTS

Test Command Status Results
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Local Loopbacks

Line Loopback: Start Inactive 00:00:00
Repeater Loopback: Start Inactive 00:00:00

Remote Loopbacks
Send Line Loopback: Down

Pattern Tests
Send and Monitor 511 Stop Active hh:mm:ss - Errors 99999+

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

esetMon

R

Send Inactive 00:00:00

Model: 7975

ainMenu Exit

Use the Command column to start or stop a test. When the Status column
shows that a test is Inactive, Start is displayed; when a test is Active, Stop is
displayed. Position the cursor at the desired Start or Stop command and press
Enter.

5-2

Selecting a Stop command on the Network Tests screen or Abort All Tests from
the Test menu will not disrupt a network-initiated loopback.

The Results column displays the test duration.
When the Send and Monitor 511 test is active, R

esetMon is available to reset the

error counter to zero.

December 1998

7975-A2-GB20-40

Line Loopback

Testing

Line Loopback (LLB) loops the received signal on the network interface back to
the network without change.

NTU/LTU

Network

Interface

CAP

Framer

Port

Interface

All 1s

EIA-530

Port

98-15931

" Procedure

To run a Line Loopback:

1. Position the cursor at the Start command next to Line Loopback on the
Network Tests screen.

2. Press Enter.
The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop
command.

4. Press Enter.

Line Loopback cannot be started when a Repeater Loopback, Data Channel
Loopback (DCLB), Remote DCLB, or network-initiated Line Loopback is in
progress.

7975-A2-GB20-40

December 1998

5-3

Testing

Repeater Loopback

Repeater Loopback (RLB) loops the signal being sent from the data port back to
the data port and to the network interface.

NTU/LTU

Network

Interface

CAP

Framer

Port

Interface

EIA-530

Port

98-15932

" Procedure

To run a Repeater Loopback:

1. Position the cursor at the Start command next to Repeater Loopback on the
Network Tests screen.

2. Press Enter.
The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop
command.

4. Press Enter.

Repeater Loopback cannot be started when a Line Loopback, DCLB, Remote
DCLB, or Data Terminal Loopback (DTLB) is active.

NOTE:

If a disconnected DSL loop is connected while a Repeater Loopback is
active, the connected units will not be able to synchronize.

5-4

December 1998

7975-A2-GB20-40

Send Remote Line Loopback

The LTU initiates the test by sending a line loopback up or down command to the
remote unit for 10 seconds. When the remote unit detects the loopback up
command, it puts itself in line loopback and lights the front panel test LED. The
remote unit remains in loopback until it receives a loopback down command. The
send line loopback tests both units. External equipment can be used to verify the
link.

Testing

Local Remote

NTU/LTU

Framer

Port

Interface

All 1s

98-15939-01

Port

Interface

NTU/LTU

Framer

CAP

CAP

" Procedure

To run a Remote Send Line loopback:

1. Position the cursor at the Up or Down selection next to Send Line Loopback
on the Network Tests screen.

2. Press the spacebar to select either Up or Down.

3. Position the cursor at the Send command next to Up or Down selection.

4. Press Enter.
The loopback stops automatically after 10 seconds. You cannot stop the test

manually.

The Send Remote Line Loopback cannot be started when any other loopback or
a Send and Monitor 511 test is active on the network interface.

EIA-530

Port

7975-A2-GB20-40

December 1998

5-5

Testing

Send and Monitor 511

The LTU initiates the test by lighting the Test LED sending a command to the
remote unit to send a 511 test pattern. When the remote unit detects the
command, it sends a 511 pattern and lights the front panel test LED. Each unit
will send and monitor the 511 pattern. The duration and results of the test are
displayed on the Network Test screen of each unit.

NOTE:

The send and monitor test is not a loopback test. Each unit independently
sends and monitors a 511 pattern.

Local Remote

All 1s

511

Mon

511

Gen

NTU/LTU

Framer

Port

Interface

All 1s

98-15936

Port

Interface

NTU/LTU

Framer

511
Gen

511

Mon

CAP

511 Pattern

511 Pattern

CAP

" Procedure

To run a Send and Monitor 511 test:

1. Position the cursor at the Start command next to Send and Monitor 511 on
the Network Tests screen.

2. Press Enter.
The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop
command.

4. Press Enter.

When a Send and Monitor 511 test is active, a count of bit errors is displayed next
to the test duration, and the R
Type r or R or select the R

esetMon virtual function key is available for use.

esetMon virtual function key to reset the error count.

EIA-530

Port

5-6

December 1998

7975-A2-GB20-40

Running SYNC Data Port Tests

To access the SYNC Data Port Tests screen, follow this menu selection
sequence:

Main Menu→Test→SYNC Data Port Tests

Testing

main/test/data Hotwire

SYNC DATA PORT TESTS

Test Command Status Results
––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Local Loopbacks
Data Terminal Loopback: Start Inactive 00:00:00
Data Channel Loopback: Start Inactive 00:00:00

Remote Loopbacks
Send Remote DCLB: Down

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Send Inactive 00:00:00

Model: 7975

ainMenu Exit

Use the Command column to start or stop a test. When the Status column
shows that a test is Inactive, Start is displayed; when a test is Active, Stop is
displayed. Position the cursor at the desired Start or Stop command and press
Enter.

7975-A2-GB20-40

The Results column displays the test duration.

December 1998

5-7

Testing

Data Terminal Loopback

Data Terminal Loopback (DTLB) loops the user data back to the DTE. This
loopback is located as closely as possible to the user data port (DTE) interface.

NTU/LTU

Network

Interface

All 1s

CAP

Framer

Port

Interface

EIA-530

Port

98-15933

" Procedure

To run a Data Terminal Loopback:

1. Position the cursor at the Start command next to Data Terminal Loopback on
the SYNC Data Port Tests screen.

2. Press Enter.
The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop
command.

4. Press Enter.

Data Terminal Loopback cannot be started when a Repeater Loopback, DCLB, or
Remote DCLB is already active on the data port.

5-8

December 1998

7975-A2-GB20-40

Data Channel Loopback

Data Channel Loopback (DCLB) loops the data from the network interface back
to the network. This loopback is located as closely as possible to the user data
port (DTE) interface.

Testing

NTU/LTU

Network

Interface

CAP

Framer

Port

Interface

All 1s

EIA-530

Port

98-15934

" Procedure

To run a Data Channel Loopback:

1. Position the cursor at the Start command next to Data Channel Loopback on
the SYNC Data Port Tests screen.

2. Press Enter.
The Start command is changed to Stop.

3. To manually stop the test, verify that the cursor is positioned at the Stop
command.

4. Press Enter.

Data Channel Loopback cannot be started when any of the following tests is
active: Send and Monitor 511, Line Loopback, or Repeater Loopback on the
network interface, or a Data Terminal Loopback on the data port.

7975-A2-GB20-40

December 1998

5-9

Testing

Send Remote Data Channel Loopback

The local termination unit can send an Up or Down sequence to request the start
or stop of a Data Channel Loopback (DCLB) on a remote unit.

Local Remote

NTU/LTU

Framer

Port

Interface

All 1s

Port

Interface

NTU/LTU

Framer

CAP

CAP

" Procedure

To send a Remote DCLB:

1. Position the cursor at the Up or Down selection next to Send Remote DCLB
on the SYNC Data Port Tests screen.

2. Press the spacebar to select the desired code (Up or Down).

3. Position the cursor at the Start command next to Send Remote DCLB on the
SYNC Data Port Tests screen.

4. Press Enter.
The Status field is changed to Sending. The Up or Down sequence

transmission stops automatically after 10 seconds. You cannot stop the
sequence manually .

The Send Remote DCLB test cannot be started when a Send and Monitor 511
test is active on the network interface.

EIA-530

Port

98-15935

5-10

December 1998

7975-A2-GB20-40

Device Tests

Testing

The Device Tests branch is used to access the only card-level test, the Lamp
Test. To access the Device Tests screen, follow this menu selection sequence:

Main Menu→Test→Device Tests

Lamp Test

main/test/card Hotwire

DEVICE TESTS

Test Command Status

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Lamp Test: Start Inactive

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions, ESC for previous menu M

Model: 7975

ainMenu Exit

The Lamp test determines whether all LEDs are lighting and functioning properly.

" Procedure

To test the LEDs:

7975-A2-GB20-40

1. Position the cursor at the Start command next to Lamp Test on the Card
Tests screen.

2. Press Enter.
The Start command is changed to Stop. During the Lamp test, all LEDs blink

simultaneously every second. When you stop the Lamp test, the LEDs are
restored to their normal condition.

3. To stop the lamp test, position the cursor at the Stop command.

4. Press Enter.

December 1998

5-11

Testing

Ending an Active Test

Except for the Remote Send Line Loopback and Remote DCLB, a test initiated by
the user can be ended by the user. Tests can also be terminated automatically by
enabling the Test Timeout option from the System Options Menu.

H A Test Timeout option is available to automatically terminate a user-initiated

Loopback or Pattern test (as opposed to manually terminating a test) after it
has been running a specified period of time. The default is 10 minutes.
Refer to Table A-3, System Options.

Test Timeout does not pertain to tests initiated by the network.

H On each test screen is a Command column. To stop the test, Press Enter

when the cursor is on the Stop command.

H Use the Abort All Tests selection from the Test menu to stop all tests running

on all interfaces, with the exception of network-initiated loopbacks. Command
Complete appears when all tests on all interfaces have been terminated.

An aborted test may continue to run for a few seconds as the abort command
is sent to the remote end and processed.

5-12

December 1998

7975-A2-GB20-40

Messages and Troubleshooting

Overview

There are many messages available to assess the status of the device and
contribute to problem resolutions. Refer to the following sections:

H

Configuring SNMP Traps

H

Device Messages

H

Troubleshooting

6

7975-A2-GB20-40

December 1998

6-1

Messages and Troubleshooting

Configuring SNMP Traps

An SNMP trap can be automatically sent out through the EOC or the
Management port to an SNMP manager when the 7975 Standalone Termination
Unit detects conditions set by the user. These traps enable the SNMP manager to
gauge the state of the network. Refer to Appendix B,

SNMP Traps,

Termination Unit.
To configure the 7975 Standalone Termination Unit for SNMP traps, use the

SNMP Traps Options screen to:

H Enable SNMP traps.
H Set the number of SNMP managers that receive SNMP traps from the 7975

Standalone Termination Unit by entering an IP address and network
destination for each SNMP manager specified.

H Select the type of SNMP traps to be sent from the 7975 Standalone

Termination Unit.

To configure SNMP Traps, follow this menu selection sequence:

for details of SNMP traps supported by the 7975 Standalone

Standards Compliance for

Main Menu→Configuration→Load Configuration From

→

Management and Communication Options→SNMP Traps Options

main/config/management/trap Hotwire

SNMP TRAPS OPTIONS

SNMP Traps: Enable

NMS 1 IP Address: 135.014.040.001 Clear Destination: DSL
NMS 2 IP Address: 135.014.003.027 Clear Destination: DSL
NMS 3 IP Address: 135.014.001.008 Clear Destination: DSL
NMS 4 IP Address: 135.014.002.024 Clear Destination: DSL
NMS 5 IP Address: 204.128.146.035 Clear Destination: DSL

General Traps: Both
Enterprise Specific Traps: Enable
Link Traps: Both
Link Traps Interfaces: Network

–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

Ctrl-a to access these functions, ESC for previous menu M

ave

S

Number of Trap Managers: 5

Model: 7975

ainMenu Exit

Refer to Table A-7, SNMP Traps Options.

6-2

December 1998

7975-A2-GB20-40

Device Messages

Messages and Troubleshooting

The Device Messages in Table 6-1, listed in alphabetical order, can appear in the
messages area at the bottom of the ATI screens.

Table 6-1. Device Messages (1 of 2)

Device Message

Access level is
Operator.
Configuration is
read-only .

Cannot Save – no
Login IDs with Access
Administrator

Command Complete Action requested has

Invalid Character (x) A nonprintable ASCII

Invalid – Data
Terminal Initiated
Loopback Active

Invalid Password Login is required and an

What Message Indicates What T o Do

The operator requested that
configuration options be
loaded, but does not have
authority to edit them.

All of the login IDs being
saved have an access level
below Administrator.

successfully completed.

character (x) has been
entered.

Network-initiated loopback
was in progress when
another selection was
made.

incorrect password was
entered; access is denied.

If configuration options are to be
edited, use a Login ID that has
Administrator authority .

Change the access level of at
least one Login ID to
Administrator so that
configuration changes can be
made. (Operator-level users
cannot make configuration
changes.) Save the Login IDs.

No action needed.

Reenter information using valid
characters.

No action needed.

H Try again.
H Contact your system

administrator to verify your
password.

Invalid – Send Pattern
Already Active

Invalid – [Test]
Already Active

Invalid Test
Combination

7975-A2-GB20-40

A pattern test was already
in progress when the Start
field was selected.

The described test was
already in progress when
another selection was
made.

A loopback or pattern test
was in progress when Start
was selected to start
another test, or was active
on the same or another
interface when Start was
selected.

December 1998

H Allow test to continue.
H Select another test.
H Stop the test.

H Allow test to continue.
H Select another test.
H Stop the test.

H Wait until other test ends and

message clears.

H Abort all tests from the Test

menu screen.

H Stop the test from the same

screen the test was started
from.

6-3

Messages and Troubleshooting

Table 6-1. Device Messages (2 of 2)

Device Message What T o DoWhat Message Indicates

Invalid entry at cursor

Invalid range. Enter a value within the IP

(1...223, excluding

127)

Limit of six Login IDs
reached

An attempt to enter a new
login ID was made, and the
limit of six login/password
combinations has been
reached.

No Security Records
to Delete

Delete was selected from
the Administer Login
screen, and no security
records had been defined.

Password Matching
Error – Re-enter
Password

Password entered in the
Reenter Password field of
the Administer Logins
screen does not match
what was entered in the
Password field.

Please Wait Command takes longer

than 5 seconds.

Test Active A test is running and no

higher priority health and
status messages exist.

address range.

1. Delete another login/password
combination.

2. Reenter the new login ID.

H No action needed.
H Enter a security record.

H Try again.
H Contact your system

administrator to verify your
password.

Wait until message clears.

H Contact service provider if test

initiated by the network.

H Wait until the other test ends

and message clears.

H Cancel all tests from the Test

screen.

H Stop the test from the same

screen the test was started
from.

0.0.0.0 is an invalid
IP address

6-4

An IP address of all zeroes
was entered.

December 1998

Enter a valid, non-zero IP
address.

7975-A2-GB20-40

Troubleshooting

Messages and Troubleshooting

This 7975 Standalone Termination Unit is designed to provide you with many
years of trouble-free service. If a problem occurs, however, refer to
Table 6-2 for possible solutions.

Table 6-2. Troubleshooting (1 of 2)

Symptom

Alarm LED is on. One of several alarm

Cannot access the
unit via the A TI.

Device Fail appears
on the System and
Test Status screen
under Self-Test
results.

No power, or the
LEDs are not lit.

Possible Cause Solutions

conditions exists. Health
and Status displays the
alarm condition.

The terminal is not set up
for the correct rate or data
format, or the unit is
configured so it prevents
access.

The unit detects an internal
hardware failure.

The power cord is not
securely plugged into the
wall receptacle and into the
rear panel connection.

The wall receptacle has no
power.

Refer to Table 4-1, Health and Status

Messages, for recommended action.

H Check the cable and connections.
H Ensure the unit is configured

properly. Verify it’s IP address and
communication port usage.

H Reset the unit.
H Reset the unit.

H Contact your service

representative.

Check that the power cord is
securely attached at both ends.

H Check the wall receptacle power

by plugging in some equipment
that is known to be working.

H Check the circuit breaker.
H Verify that your site is not on an

energy management program.

An LED is not lit. LED is out. Run the Lamp test. If the LED in

7975-A2-GB20-40

Power supply has failed. Replace power supply.

question does not flash with the other
LEDs, then contact your service
representative.

December 1998

6-5

Messages and Troubleshooting

A

d

H Stop

the test or wait for the test to

Table 6-2. Troubleshooting (2 of 2)

Symptom SolutionsPossible Cause

Not receiving data. H The network or data port

cables are not
connected (check front
panel LEDs for more
information).

H

test is being execute
on the unit (check the
TEST LED on the front
panel).

H The far-end device is

off-line.

Power-Up Self-Test
fails. Only Alarm

The unit has detected an

internal hardware failure.
LED is on after
power-up.

H Check network and data port

cables.

H Run Loopback tests. Refer to

Chapter 5,

H

p

Testing

.

end.

H Make sure the far-end device is

on.

H Reset the unit and try again.
H Contact your service

representative.

6-6

December 1998

7975-A2-GB20-40

Security

Overview

7

The 7975 Standalone Termination Unit provides several methods of security by
limiting user access to the ATI through option settings. You can:

H Enable the Telnet Login Required option.
H Limit the access by setting a Session Access Level option of Operator for the

Telnet Session.

H Disable the access with the Telnet Session option.

See Table A-5, Telnet Sessions Options, in Appendix A,

Tables

ATI Access Levels

The 7975 Standalone Termination Unit has two access levels: Administrator and
Operator. The access level determines what functions are accessible, as shown
in Table 7-1.

Table 7-1. Access Levels

ATI Access to Menu Functions

Status Read-Only Read-Only
Test Full Access No Access
Configuration Full Access Read-Only
Control Full Access No Access

Configuration Option

.

Administrator Operator

The effective access level is the more restrictive of the session access level or
the login access level.

7975-A2-GB20-40

December 1998

7-1

Security

Access level is also used to control access via Telnet. If the Telnet Session
Access Level is set to Administrator (see Table A-5, Telnet Session Options), a
Login ID with an Operator access level is not permitted access.

Creating a Login

Logins apply to the terminal directory connected to the communication port or
Telnet access directly to the ATI of the 7975 Standalone Termination Unit.

Six login ID/password combinations are available. Each Login ID and Password
must be unique and include an access level.

" Procedure

1. To create a login record, follow this menu selection sequence:

Main Menu→Control→Administer Logins

main/control/admin_logins Hotwire

ADMINISTER LOGINS Page 1 of x

Login ID: newuser
Access Level: Administrator

Are you sure? Yes

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

ave PgUp PgDnNew Delete

S

ESC for previous menu M

Model: 7975

ainMenu Exit

2. Select Newuser and press Enter. The Login Entry screen is displayed.

main/control/admin_logins Hotwire
Slot: 4 Model: 7975

LOGIN ENTRY

Login ID: newuser2
Password: es342
Re-enter Password: es342
Access Level: Administrator

––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
Ctrl-a to access these functions ESC for previous menu M

ave

S

7-2

New logins will not become permanent until saved

WARNING

through the “ADMINISTER LOGINS” screen!

ainMenu Exit

December 1998

7975-A2-GB20-40

Security

3. Create the login by entering the following fields. Login IDs and passwords are

case-sensitive.

On the Login Entry
screen, for the . . .

Login ID 1 to 10 ASCII printable characters (hex21 through 7E).

Password 1 to 10 ASCII printable characters that can consist of

Re-enter Password 1 to 10 ASCII printable characters characters that can

Access Level Administrator, Operator

Enter . . .

Blanks are not allowed.

0–9, a–z, A–Z, # (pound), . (period), – (dash), and
/ (slash).

consist of 0–9, a–z, A–Z, # (pound), . (period),
– (dash), and / (slash).

NOTE:

Assign at least one Administrator-level Login ID. Full access is necessary
to make configuration option changes and administer logins.

4. Press Ctrl-a to switch to the screen function key area below the dotted line.

Select Save and press Enter.

5. When Save is complete, Command Complete appears at the bottom of the

screen.

6. If additional logins are required, repeat Steps 3 through 5.

7. When all logins are entered, press Esc to return to the Administer Logins

screen.

8. Select S

ave and press Enter.

7975-A2-GB20-40

December 1998

7-3

Security

Deleting a Login

" Procedure

1. To delete a login record, follow this menu selection sequence:

Main Menu→Control→Administer Logins

2. Select PgUp or PgDn and press Enter to page through login pages/records

until you find the one to be deleted.

3. Once the correct record is displayed, select Del

4. To complete the delete action, select Save and press Enter.

When the deletion is complete, Command Complete appears at the bottom
of the screen. The number of login pages/records reflects one less record,
and the record following the deleted record appears.

Controlling SNMP Access

There are three methods for limiting SNMP access.

H Disable the SNMP management option. Refer to Table A-8, General SNMP

Management Options.

H Assign SNMP community names and access types.
H Limit SNMP access through validation of the IP address of each allowed

SNMP manager.

Assigning SNMP Community Names and Access Types

The unit can be managed by an SNMP manager supporting SNMP. The
community name must be supplied by an external SNMP manager accessing an
object in the MIB.

ete and press Enter.

To define SNMP community names, follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From→Edit
SNMP→General SNMP Management

Refer to Table A-8, General SNMP Management Options, to:

H Enable SNMP Management.
H Assign the SNMP community names of the SNMP Managers that are allowed

to access the units Management Information Base (MIB).

H Specify Read or Read/Write access for each SNMP community name.

7-4

December 1998

→

7975-A2-GB20-40

Limiting SNMP Access through the IP Addresses of the Managers

The unit provides an additional level of security through validation of the IP
addresses.

The SNMP Management option must be enabled. To control SNMP access with
IP addresses, follow this menu selection sequence:

Main Menu→Configuration→Management→Security Menu

Refer to Table A-9, SNMP NMS Security Options. The SNMP access can be
limited by:

H Enabling NMS IP address checking.
H Add each IP address and access level.

NOTE:

Do not change or delete the IP address or access level of the NMS
performing the sets or enable IP address checking prior to adding the NMS to
the table.

Security

Resetting the Termination Unit’s COM Port or
Factory Defaults

Misconfiguring the termination unit could render the user interface inaccessible,
leaving it in a state where a session cannot be started via the COM port or a
Telnet session. If this occurs, the termination unit connectivity can be restored via
a terminal directly connected to the COM port.

Two methods can be used to restore access to the user interface:

H Reset COM Port – Allows you to reset the configuration options related to

COM port usage. This also causes a device reset, where the termination unit
performs a Device Self-Test. No security-related configuration options are
changed.

H Reload Factory Defaults – Allows you to reload the Default Factory

Configuration, resetting all of the configuration and control settings which
causes the current configuration to be destroyed and a device reset. This
method is also useful when the user’s password(s) have been forgotten.

" Procedure

To reset COM port settings:

1. At the terminal that is directly connected to the unit’s COM port, configure the

terminal to operate at 9.6 kbps, using character length of 8 bits, with one
stop-bit, and no parity.

2. Reset the unit, then immediately and repeatedly press Enter at a rate of

about 1 press per second until the System Paused screen appears.

3. Tab to the desired method, and enter yes (or y) for the selected prompt.

7975-A2-GB20-40

December 1998

7-5

Security

If entering yes to prompt . . . Then . . .

Reset COM Port usage H Port type is set to Terminal

H Data Rate (kbps) is set to 9.6
H Character Length is set to 8
H Stop Bits is set to 1
H Parity is set to None

Reload Factory Defaults Yes (or y) will restore all factory-loaded

configuration and control settings contained in the
Default Factory Configuration area are loaded.

If no (or n) is entered, or if no selection is made within 30 seconds, the unit
returns to the condition or operation it was in when the system reset was
initiated, with the COM port rate returning to its configured rate.

The termination unit resets itself, going through a Self-Test. Connectivity is
restored and the Main Menu screen appears.

7-6

December 1998

7975-A2-GB20-40

IP Addressing

Selecting an IP Addressing Scheme

The NTU’s network interface IP address is assigned through the peer IP address
of the LTU’s Network Interface menu. The NTU obtains the LTU’s IP address and
subnet mask when the PPP link is established over the EOC. The LTU IP
address and subnet mask are configured from the Communication Protocol
Options menu.

The 7975 Standalone Termination Unit is assigned an IP address and subnet
through the Peer IP address of the M/SDSL Network interface menu. Once the
address is assigned, you can use the 7975 Standalone Termination Unit’s ATI to
assign:

8

H An IP address for each NMS. For SNMP IP Options, see Table A-7, SNMP

Traps Options, Table A-8, General SNMP Management Options, and

Table A-9, SNMP NMS Security Options, in Appendix A,

Tables

.

H An IP address for the TFTP server you wish to use to upload and download

configurations. See

Configuration

Review the following information in preparation for selecting an IP addressing
scheme.

H Any legal host address is allowed for a given subnet. The address choice

within the subnet is arbitrary.

H A single route to a subnet is all that is needed to reach every device on a

subnet.

Configuration Loader

.

in Chapter 3,

Configuration Option

Initial Setup and

7975-A2-GB20-40

December 1998

8-1

IP Addressing

IP Addressing Example

MCC

MCC Base
Address = 126.35.1.1

MCC Base Subnet
Mask = 255.255.0.0

LTU

8775

DSLAM

Peer IP Address = 126.35.50.5

Port 1

Port 2

Peer IP Address = 126.35.10.1

Port 3

Peer IP Address = 126.35.10.2

Port 4

Peer IP Address = 126.35.10.3

NTU

8775

DSLAM

MCC

MCC Base
Address = 126.35.50.1

MCC Base Subnet
Mask = 255.255.255.0

7975
7975

7975

7975

LTU IP Address = 126.35.7.1

LTU Peer IP Address = 126.35.7.2

NTU IP Address = 126.35.7.2

7975

(LTU Peer IP Address)

Peer IP Address Assignments

H The Peer IP Address refers to the IP address of the unit configured as an

NTU.

H The Peer IP Address is assigned by the LTU.

98-15901

8-2

December 1998

7975-A2-GB20-40

Configuration Option Tables

Overview

The tables in this appendix summarize the configuration options accessed when
you select the Configuration option on the Main Menu. The Configuration options
are arranged into groups based upon functionality.

Select . . . To Access the . . . To Configure the . . .

Network Network Interface Options, Table A-1 E1 SDSL network interface

A

Ports.

SYNC Port Synchronous Data Port Options,

Table A-2

System System Options, Table A-3 General system options of

Communication
Port

Management
and
Communication

NOTE:

All changes to configuration options must be saved. Refer to

Configuration Options

Communication Port, Table A-4 Unit’s COM port options.

H Telnet Sessions Options,

Table A-5

H Communication Protocol Options,

Table A-6

H SNMP Traps Options, Table A-7
H General SNMP Management

Options, Table A-8

H SNMP NMS Security Options,

Table A-9

in Chapter 3,

Initial Startup and Configuration

Synchronous DTE interface
Port.

the unit.

Management support of the
unit through SNMP and
Telnet.

Saving

.

7975-A2-GB20-40

December 1998

A-1

Configuration Option Tables

Network Interface Options Menu

For Network Interface Options, refer to Table A-1. To access the Network
Interface Options screen, follow this menu selection sequence:

Main Menu→Configuration→Current Configuration→Network

Table A-1. Network Interface Options (1 of 2)

Margin Threshold
Possible Settings: –5db, –4db, –3db, –2db, –1db, 0db, 1db, 2db, 3db, 4db, 5db, 6db,

7db, 8db, 9db, 10db

Default Setting: 0db
Determines the level, expressed in decibels, at which a signal-to-noise margin condition

is recognized.

–5db to 10db – Sets the margin threshold to this value.
Excessive Error Rate Threshold

Possible Settings: 1E–4, 1E–5, 1E–6, 1E–7, 1E–8, 1E–9
Default Setting: 1E–6

Determines the error rate at which an excessive error rate (EER) condition is
recognized. The rate is the ratio of the number of CRC errors to the number of bits
received in a certain period.

AutoRate

Possible Settings: Enable, Disable
Default Setting: Enable

Specifies whether the DSL line will automatically train up to the best rate or be user
selectable. This option is only available when the standalone unit is configured as an
L TU.

Enable – The LTU is set to automatically adjust at the best line rate.
Disable – The LTU Line rate is user selectable and is based on the DSL Line Rate

selected.

A-2

7975-A2-GB20-40December 1998

Configuration Option Tables

Table A-1. Network Interface Options (2 of 2)

DSL Line Rate

Possible Settings: 144, 272, 400, 528, 784, 1040, 1552 (2 Mbps unit only),
Default Setting: 144

Specifies the DSL line rate of the unit. This option is only available when the standalone
unit is configured as an L TU and AutoRate is disabled (unit is in fixed rate).

144 – Available payload rates are: 64 and 128 kbps.
272 – Available payload rates are: 192 and 256 kbps.
400 – Available payload rates are: 320 and 384 kbps.
528 – Available payload rates are: 448 and 512 kbps.
784 – Available payload rates are: 576, 640, 704, and 768 kbps.
1040 – Available payload rates are: 832, 896, 960, and 1024 kbps.
1552 (2 Mbps unit only) – Available payload rates are: 1088, 1152, 1216, 1280, 1344,

1408, 1472, and 1536 kbps.
2064 (2 Mbps unit only) – Available payload rates are: 1600, 1664, 1728, 1792, 1856,

1920, 1984, and 2048 kbps.

Peer IP Address

2064 (2 Mbps unit only)

Possible Settings: 000.000.000.001 – 223.255.255.255, Clear
Default Setting: 000.000.000.001

Specifies the peer IP address for the remote management providing the remote
management link on the DSL loop. This option is only available when the standalone
unit is configured as an L TU.

000.000.000.001 – 223.255.255.255 – Enter an address for the peer unit. The range for
the first byte is 000 to 223, with the exception of 127. The range for the remaining three
bytes is 000 to 255. The peer IP address must be in the same subnet as the MCC
address.

Clear – Clears the IP address field and sets to all zeros.
Circuit Identifier

Possible Settings: [ASCII Text], Clear
Default Setting: [blank]

Uniquely identifies the circuit number of the transmission vendor’s DSL line for
troubleshooting purposes.

[ASCII Text] – Enter a maximum of 128 characters. All printable ASCII characters
except ^ (caret) are allowed.

Clear – Clears the field.

7975-A2-GB20-40

December 1998

A-3

Configuration Option Tables

Synchronous Data Port Options Menu

For Synchronous Data Port Options, refer to Table A-2. To access the
Synchronous Data Port Options screen, follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From →SYNC Ports

Table A-2. Synchronous Data Port Options (1 of 3)

Port Type

Possible Settings: E530A, V.35, RS449, X.21
Default Setting: E530A

Determines the port type for the data port.
E530A – The port is configured as an EIA-530A compatible DCE. An EIA-530

compatible DTE can be connected directly to the DB25 Port connector on the rear panel
of the unit.

V.35 – The port is configured as a V.35 compatible DCE. A V.35 compatible DTE can be
connected using an MS34 to DB25 adaptor cable to connect to the DB25 Port
connector on the rear panel of the unit.

E530A – The port is configured as an RS449 compatible DCE. An RS449 compatible
DTE can be connected using a DB37 to DB25 adaptor cable to connect to the DB25
Port connector on the rear panel of the unit.

X.21 – The port is configured as an X.21 compatible DCE. An X.21 compatible DTE can
be connected using a DB15 to DB25 adaptor cable to connect to the DB25 Port
connector on the rear panel of the unit.

Payload Rate
Possible Settings: 64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896,

960, 1024, 1088, 1152, 1216, 1280, 1344, 1408, 1472, 1536 , 1600, 1664, 1728, 1792,
1856, 1920, 1984, 2048

Default Setting: 128

NOTE: Payload rates of 1088 kbps and higher pertain only to the 2 Mbps

Specifies the payload rate of the port. This option is not displayed on the unit when
AutoRate is enabled or the unit is configured as an NTU. The L TU configures the
payload rate for the NTU when AutoRate is disabled.

64 to 2048 – Sets the payload rate in kbps when AutoRate is disabled (unit is
configured as fixed rate).

Transmit Clock Source

Possible Settings: Internal, External
Default Setting: Internal

Specifies whether the transmitted data for the synchronous data port is clocked using
an internal clock provided by the LTU (synchronized to the clock source specified by the
clock source configuration option) or an external clock provided by the DTE connected
to the synchronous data port. If an external clock is used, it must be synchronized to the
same clock source as the LTU.

Internal – Indicates the clock is provided internally by the 7975 Termination Unit on the
TXC interchange circuit DB (CCITT 114).

External – Indicates the clock is provided externally by the DTE on the XTXC
interchange circuit DA (CCITT 113). Use this selection if the clock source is set to the
data port.

termination unit.

A-4

7975-A2-GB20-40December 1998

Configuration Option Tables

Table A-2. Synchronous Data Port Options (2 of 3)

Invert Transmit Clock

Possible Settings: Disable, Enable
Default Setting: Disable

Specifies whether the clock supplied by the 7975 Termination Unit on the TXC
interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted
Data interchange circuit BA (CCITT 103). This configuration option is useful when long
cable lengths between the 7975 Termination Unit and the DTE are causing data errors.

Disable – Indicates TXC supplied by the 7975 Termination Unit on this port is not phase
inverted.

Enable – Indicates TXC supplied by the 7975 Termination Unit on this port is phase
inverted.

Send All Ones on Data Port Not Ready

Possible Settings: Both, Disable, DTR, RTS
Default Setting: Both

Specifies the conditions on the data port that determine when valid data is not being
sent from the DTE. When this condition is detected, all ones are sent to the network.

Both – Monitors both DTR and RTS. If either is interrupted, all ones are sent to the
network.

Disable – Disables the monitoring of interchange circuits from the DTE connected to
the synchronous data port.

DTR – Monitors the DTE Ready interchange circuit CD (CCITT 108/1/2). When DTR is
interrupted, all ones are sent to the network.

RTS – Monitors the Request-to-Send interchange circuit CA (CCITT 105). When RTS is
interrupted, all ones are sent to the network.

Action on Network LOS Alarm

Possible Settings: Halt, None
Default Setting: Halt

Specifies the action taken on the synchronous data port when an LOS (Loss Of Signal)
alarm is received on the network interface.

Halt – Stops the transmission of data on the data port and disables the data port when
an LOS alarm is received on the network interface. When LOS alarms are received, all
ones are sent on the Received Data interchange circuit BB (CCITT 104). The
Clear-to-Send interchange circuit CB (CCITT 106) is interrupted.

None – Makes the data port unaffected by LOS alarms received on the network
interface.

Network Initiated Data Channel Loopback

Possible Settings: Disable, Enable
Default Setting: Disable

Allows the initiation and termination of a Data Channel Loopback (DCLB) by the receipt
of a DCLB-actuate sequence or DCLB-release sequence from the network or far-end
device.

Disable – Ignores the DCLB-actuate and DCLB-release sequences for this port.
Enable – DCLB-actuate and DCLB-release sequences are recognized for this port.

7975-A2-GB20-40

December 1998

A-5

Configuration Option Tables

Table A-2. Synchronous Data Port Options (3 of 3)

Port (DTE) Initiated Loopbacks

Possible Settings: Disable, DTLB, DCLB, Both
Default Setting: Disable

Allows the initiation and termination of a local Data Terminal Loopback (DTLB) or
remote Data Channel Loopback (DCLB) by the DTE connected to this port. (DTLB is
equivalent to a V.54 loop 3, and DCLB is equivalent to a V.54 loop 2.) Control of these
loopbacks is through the DTE interchange circuits as specified by the V.54 standard.

Disable – Disables control of local DTLBs and remote DCLBs by the DTE connected to
this port.

DTLB – Gives control of the local DTLBs for this port to the DTE attached to this port.
This loopback is controlled by the Local Loopback interchange circuit LL (CCITT 141).

DCLB – Gives control of the remote DCLBs for the far-end port connected to this port to
the DTE attached to this port. This loopback is controlled by the Remote Loopback
interchange circuit RL (CCITT 140). The far-end equipment must support in-band
V.54 loopbacks.

Both – Gives control of local DTLBs and remote DCLBs to the DTE connected to this
port.

ElasticStore

Possible Settings: Disable, Enable
Default Setting: Enable

Used to enable or disable a first in first out (FIFO) buffer circuit for the incoming external
clock. This circuit is used to compensate for the differences between the frequencies of
the data clocks for the two units in the circuit. This option only applies if the unit is set
for external timing.

Disable – Disables the Elastic Store FIFO.
Enable – Enables the Elastic Store FIFO.

A-6

7975-A2-GB20-40December 1998

System Options Menu

For System Options, refer to Table A-3. To access the System Options screen,
follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From→System

Table A-3. System Options

DSL Mode

Possible Settings: LTU, NTU
Default Setting: NTU

Controls whether the unit is configured as a control unit or tributary unit.

L TU – The unit is configured as a control unit (Line Termination Unit).
NTU – The unit is configured as a tributary unit (Network Termination Unit). This unit will

request its IP address from the L TU during establishment of the PPP link.

NOTE: Changing this option will reset the card.

T est Timeout

Configuration Option Tables

Possible Settings: Enable, Disable
Default Setting: Enable

Allows user-initiated tests to end automatically . The feature should be enabled when the
unit is remotely managed, so that control can be regained after a test is accidentally
executed.

Enable – User-initiated loopback and pattern tests end when test duration is reached.
Disable – Tests can be terminated manually from the Network Tests screen. Refer to

Running Network Tests

NOTE: Tests commanded by the DTE or network-initiated tests are not affected by

this test timeout.

Test Duration (min)

Possible Settings: 1–120
Default Setting: 10

Number of minutes for a test to be active before automatically ending.

H The Test Duration (min) option appears when Test Timeout is enabled.

1 to 120 – Amount of time in minutes for a user-initiated test to run before terminating.

in Chapter 5,

Testing

.

7975-A2-GB20-40

December 1998

A-7

Configuration Option Tables

Communication Port

For Communication Port Options, refer to Table A-4. To access the
Communication Port screen, follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From→Communication
Port

Table A-4. Communication Port (1 of 3)

Port Use

Possible Settings: T erminal , Net Link
Default Setting: T erminal

Specifies how the communications port is to be used.
T erminal – The communication port will be used for an Asynchronous terminal

interface.
Net Link – The communication port will be used as the network communication link to

an IP network or device.

Port Type

Possible Settings: Asynchronous, Synchronous
Default Setting: Asynchronous

When Port Use is set to Net Link, Port Type controls whether the communication port
will be asynchronous or synchronous.

Asynchronous – Configures the communication port for asynchronous communication.
Synchronous – Configures the communication port for synchronous communication.

not

NOTE: Peer IP Address and Circuit Identifier are

Data Rate

Possible Settings: 9.6, 14.4, 19.2, 28.8, 38.4
Default Setting: 9.6

Specifies the communication port baud rate.

9.6 – Communication port rate is 9600 bps.

14.4 – Communication port rate is 14400 bps.

19.2 – Communication port rate is 19200 bps.

28.8 – Communication port rate is 28800 bps.

38.4 – Communication port rate is 38400 bps.
Parity

Possible Settings: None, Odd, Even
Default Setting: None

Specifies the parity of the communication port.

None – No parity used.
Odd – Odd parity used.
Even – Even parity used.

copied.

A-8

7975-A2-GB20-40December 1998

Configuration Option Tables

Table A-4. Communication Port (2 of 3)

Stop Bits

Possible Settings: 1, 1.5, 2
Default Setting: 1

Specifies the number of stop bits for the communication port.

1 – One stop bit.

1.5 – One and one half stop bits.
2 – Two stop bits used.

Ignore Control Leads

Possible Settings: Disable, DTR
Default Setting: Disable

Specifies whether DTR is used.

Disable – Control leads are treated as standard.
DTR – DTR is ignored.
Login Required

Possible Settings: Enable, Disable
Default Setting: Disable

Specifies if an ID and password are required to access the asynchronous terminal
interface on the communication port. Login IDs are created with a password and access
level. Refer to

Enable – Login ID and password are required to access the asynchronous terminal
interface.

Disable – No Login ID and password are required to access the asynchronous terminal
interface.

Chapter 7,

Creating a Login

.

Port Access Level

Possible Settings: Administrator, Operator
Default Setting: Administrator

Specifies the highest level of access allowed when accessing an ATI session through a
Telnet session.

Administrator – This is the higher access level, permitting full control of the 7975
Termination Unit. Access level is determined by the Login ID. If Telnet Login Required is
disabled, the session access level is Administrator.

Operator – This is the lower access level, permitting read-only access to status and
configuration screens.

Inactivity Timeout

Possible Settings: Enable, Disable
Default Setting: Disable

Provides automatic logoff of a Telnet session.

Enable – The Telnet session terminates automatically after the Disconnect Time.
Disable – A Telnet session will not be closed due to inactivity.

7975-A2-GB20-40

December 1998

A-9

Configuration Option Tables

Table A-4. Communication Port (3 of 3)

Disconnect Time (Minutes)

Possible Settings: 1 – 60
Default Setting: 5

Number of minutes of inactivity before the session terminates automatically . Timeout is
based on no keyboard activity .

1 to 60 – The Telnet session is closed after the selected number of minutes.

H Disconnect Time (minutes) option appears when Inactivity Timeout is enabled.

A-10

7975-A2-GB20-40December 1998

Management and Communication Options Menu

The Management and Communication Options Menu includes the following:

H Telnet Sessions Options, Table A-5
H Communication Protocol Options, Table A-6
H SNMP Traps Options, Table A-7
H General SNMP Management Options, Table A-8
H SNMP NMS Security Options, Table A-9

Telnet Sessions Options

The Telnet Sessions Options (Table A-5) control whether a Telnet session is
allowed through an interconnected IP Network. If allowed, these options
determine what level of security to apply to the session to control access. Only
one Telnet session is allowed at a time. Initial values are determined by the
configuration you currently have loaded. To access the Telnet Sessions Options
screen, follow this menu selection sequence:

Configuration Option Tables

Main Menu→Configuration→Load Configuration From

→

Management and Communication→Telnet Session

Table A-5. Telnet Sessions Options (1 of 2)

T elnet Session

Possible Settings: Enable, Disable
Default Setting: Disable

Specifies if the 7975 Termination Unit will respond to a Telnet session request from a
Telnet client on an interconnected IP network.

Enable – Allows Telnet sessions between the unit and a Telnet client.
Disable – No Telnet sessions allowed.

T elnet Login Required

Possible Settings: Enable, Disable
Default Setting: Disable

Used to secure access to the ATI through a Telnet session. Login IDs are created with a
password and access level. Refer to

Enable – Security is enabled. When access is attempted via Telnet, the user is
prompted for a Login ID and password.

Disable – No Login required for a Telnet session.

Creating a Login

in Chapter 7,

Security

.

7975-A2-GB20-40

December 1998

A-11

Configuration Option Tables

Table A-5. Telnet Sessions Options (2 of 2)

Session Access Level

Possible Settings: Administrator, Operator
Default Setting: Administrator

The Telnet session access level is interrelated with the access level of the Login ID.
Refer to

Administrator – This is the higher access level, permitting full control of the 7975
Termination Unit. Access level is determined by the Login ID. If Telnet Login Required is
disabled, the session access level is Administrator.

Operator – This is the lower access level, permitting read-only access to status and
configuration screens.

Inactivity Timeout

Possible Settings: Enable, Disable
Default Setting: Disable

Provides automatic logoff of a Telnet session.

Enable – The Telnet session terminates automatically after the Disconnect Time.
Disable – A Telnet session will not be closed due to inactivity.
Disconnect Time (Minutes)

ATI Access Levels

in Chapter 7,

Security

for more information.

Possible Settings: 1 – 60
Default Setting: 5

Number of minutes of inactivity before a Telnet session terminates automatically. Time
out is based on no keyboard activity .

H Disconnect Time (minutes) option appears when Inactivity Timeout is enabled.

1 to 60 – The Telnet session is closed after the selected number of minutes.

Communication Protocol Options

To access the Communication Protocol Options screen, follow this menu
selection sequence:

Main Menu→Configuration→Load Configuration From
Management and Communication→Comm Protocol Options

Table A-6. Communication Protocol Options (1 of 2)

Node IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255
Default Setting: 000.000.000.000

Specifies the Node IP address. This option is only available when the standalone unit is
configured as an L TU.

000.000.000.000 – 223.255.255.255 – Enter an IP address for the node. The range for
the first byte is 000 to 223, with the exception of 127. The range for the remaining three
bytes is 000 to 255.

→

A-12

7975-A2-GB20-40December 1998

Configuration Option Tables

Table A-6. Communication Protocol Options (2 of 2)

Node Subnet Mask

Possible Settings: 000.000.000.000 – 255.255.255.255
Default Setting: 000.000.000.000

Specifies the Node Subnet Mask. This option is only available when the standalone unit
is configured as an L TU.

000.000.000.000 – 255.255.255.255 – Enter an address for the Node Subnet Mask.
Default Network Destination

Possible Settings: None, COM, DSL
Default Setting: None

Specifies where the default management network is connected, for example, if your
default network is connected to the COM port, select COM as the default management
network destination.

None – No default destination is defined. Unroutable data is discarded.
COM – The unit’s COM port is the default network destination. This option is only

available when the Port Use option on the Communication Port Options menu is set to
Net Link.

DSL – The unit’s DSL port is the default network destination.
Communication Port IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255
Default Setting: 000.000.000.000

Specifies the unit’s Communication Port IP Address when the unit is configured as a
network communication link. This option is only used when the Port Use option on the
Communication Port Options menu is set to Net Link. If the COM Port IP address is not
set (000.000.000.000) the node IP address specified by the Node IP Port will be used.

000.000.000.000 – 223.255.255.255 – Enter an address for the Communication Port.
The range for the first byte is 000 to 223, with the exception of 127. The range for the
remaining three bytes is 000 to 255.

Communication Port Subnet Mask

Possible Settings: 000.000.000.000 – 255.255.255.255
Default Setting: 000.000.000.000

Specifies the unit’s Communication Port Subnet Mask when the unit is configured as a
network communication link. This option is only used when the Port Use option on the
Communication Port Options menu is set to Net Link. If the COM Port IP address is not
set (000.000.000.000), the node IP Address will be used.

000.000.000.000 – 255.255.255.255 – Enter an address for the Communication Port
Subnet Mask.

Communication Port Link Protocol

Possible Settings: PPP, SLIP
Default Setting: PPP

Specifies the unit’s Communication Port link protocol when the unit is configured as a
network communication link. This option is only used when the Port Use option on the
Communication Port Options menu is set to Net Link.

PPP – Defines Point-to-Point protocol for the link layer protocol for the network
communication link.

SLIP – Serial Line IP Protocol for the link layer protocol for the network communication
link.

7975-A2-GB20-40

December 1998

A-13

Configuration Option Tables

SNMP Traps Options

To access the SNMP Traps Options screen, follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From→Edit

→

Management and Communication→SNMP Traps

Table A-7. SNMP Traps Options (1 of 2)

SNMP Traps

Possible Settings: Enable, Disable
Default Setting: Disable

Controls the generation of SNMP trap messages. The options for addresses and types
of traps are located in this table.

Enable – SNMP trap messages are sent out to SNMP managers.
Disable – No SNMP trap messages are sent out.

Number of Trap Managers

Possible Settings: 1, 2, 3, 4, 5
Default Setting: 1

Sets the number of SNMP management systems that will receive SNMP traps.

1 to 5 – Number of trap managers. An NMS IP address is required for each manager.
NMS n IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255, Clear
Default Setting: 000.000.000.000

Specifies the Internet Protocol address used to identify each SNMP trap manager.

000.000.000.000 – 223.255.255.255 – Enter an address for each SNMP trap manager.
The range for the first byte is 000 to 223, with the exception of 127. The range for the
remaining three bytes is 000 to 255.

Clear – Clears the IP address and sets to all zeros.
NMS n Destination

Possible Settings: DSL, COM
Default Setting: DSL

Provides the network destination path of each trap manager.

DSL – The DSL port is the network destination path.
COM – The COM port is the network destination path.
General Traps

Possible Settings: Disable, Warm, AuthFail, Both
Default Setting: Both

Determines which SNMP traps are sent to each trap manager.

Disable – No general trap messages are sent.
Warm – Sends trap message for
AuthFail – Sends trap message for
Both – Sends both trap messages.

NOTE: Refer to Appendix B,

A-14

warmStart

Standards Compliance for SNMP Traps

events.

authenticationFailure

events.

.

7975-A2-GB20-40December 1998

Configuration Option Tables

Table A-7. SNMP Traps Options (2 of 2)

Enterprise Specific Traps

Possible Settings: Enable, Disable
Default Setting: Disable

Determines if SNMP traps are generated for enterprise-specific events.
Enable – SNMP traps are generated for

NOTE: Refer to

for SNMP Traps

Disable – No enterprise-specific event traps are sent.
Link Traps

Possible Settings: Disable, Up, Down, Both
Default Setting: Both

Determines if SNMP traps are generated for link up and link down for one of the
communication interfaces.

Disable – No
Up – A

the communication interfaces is operational.
Down – A

failure in one of the communication interfaces.
Both – Sends trap messages for detection of both

NOTE: Refer to

linkUp

linkUp

linkDown

SNMP Traps

Enterprise Specific Traps

.

or

linkDown

trap is generated when the 7975 Termination Unit recognizes that one of

trap is generated when the 7975 Termination Unit recognizes a

SNMP traps are generated.

linkUp and linkDown

.

enterpriseSpecific

in Appendix B,

linkUp

and

in Appendix B,

events.

Standards Compliance

linkDown

.

Standards Compliance for

Link Trap Interfaces

Possible Settings: Network, SYNC, All
Default Setting: All

Determines if the SNMP

enterpriseSpecific

(DTE) port, or all.

Network – SNMP trap messages are generated for the network interface.
SYNC – SNMP trap messages are generated for the synchronous data (DTE) port.
All – SNMP trap messages are generated for the network interface and the

synchronous data (DTE) ports.

linkUp

, SNMP

traps are generated for the network interface and synchronous data

linkDown

, and interface-related

7975-A2-GB20-40

December 1998

A-15

Configuration Option Tables

General SNMP Management Options

SNMP configuration options allow you to specify the information necessary to
support the Termination Unit General SNMP functionality. To access the General
SNMP Management Options screen, follow this menu selection sequence:

Main Menu→Configuration→Load Configuration From→Edit

→

Management and Communication→SNMP→General SNMP Management

Table A-8. General SNMP Management Options

SNMP Management

Possible Settings: Enable, Disable
Default Setting: Disable

Enables or disables the SNMP management features.

Enable – Enables SNMP management capabilities.
Disable – Disables SNMP management capabilities.
Community Name 1

Possible Settings: ASCII text field, Public
Default Text: Public

Identifies the name of the community allowed to access the unit’s MIB. The community
name must be supplied by an external SNMP manager when that manager attempts to
access an object in the MIB.

T ext Field – Enter or edit a community name.
Clear – Clears the community name field.
Name 1 Access

Possible Settings: Read, Read/Write
Default Setting: Read

Determines the access level for Community Name 1.

Read – Allows read-only access (get) for Community Name 1.
Read/Write – Allows read/write access (get) for Community Name 1.
Community Name 2

Possible Settings: ASCII text field, Public
Default Text: Public

Identifies the name of the second community allowed to access the unit’s MIB. The
community name must be supplied by an external SNMP manager when that manager
attempts to access an object in the MIB.

T ext Field – Enter or edit a community name.
Clear – Clears the community name field.
Name 2 Access

Possible Settings: Read, Read/Write
Default Setting: Read

Determines the access level for Community Name 2.

Read – Allows read-only access (get) for Community Name 2.
Read/Write – Allows read/write access (get/set) for Community Name 2.

A-16

7975-A2-GB20-40December 1998

SNMP NMS Security Options

SNMP configuration options allow you to specify the information necessary to
support the Termination Unit SNMP NMS Security. To access the SNMP NMS
Security Options screen, follow this menu selection sequence:

Configuration Option Tables

Main Menu→Configuration→Load Configuration From→Edit

→

Management and Communication →SNMP →Security

Table A-9. SNMP NMS Security Options

NMS IP Validation

Possible Settings: Enable, Disable
Default Setting: Disable

Specifies whether security checking is performed on the IP address of SNMP
management systems attempting to access the node.

Enable – Security checking is performed on the IP address of SNMP management
systems attempting to access the node.

Disable – No security checking is performed.
Number of Managers

Possible Settings: 1, 2, 3, 4, 5
Default Setting: 1

Specifies the number of SNMP management systems that can send SNMP messages.

1 to 5 – Number of trap managers. An NMS IP address is required for each manager.
NMS n IP Address

Possible Settings: 000.000.000.000 – 223.255.255.255, Clear
Default Setting: 000.000.000.000

Specifies the Internet Protocol address used to identify each SNMP manager.

000.000.000.000 – 223.255.255.255 – Enter an address for each SNMP manager. The
range for the first byte is 000 to 223, with the exception of 127. The range for the
remaining three bytes is 000 to 255.

Clear – Clears the IP address and sets to all zeros.
Access Level

Possible Settings: Read, Read/Write
Default Setting: Read

Determines the access level allowed for an authorized NMS when IP address validation
is being performed.

Read – Allows read-only access (get) to the accessible objects in the MIB for this
device.

Read/Write – Allows read/write access (get/set) to the accessible objects in the MIB for
this device.

7975-A2-GB20-40

December 1998

A-17

Configuration Option Tables

This page intentionally left blank.

A-18

7975-A2-GB20-40December 1998

Standards Compliance for
SNMP Traps

SNMP Traps

This section describes the unit’s compliance with SNMP standards and any
special operational features for the SNMP traps supported. The unit supports the
following traps:

H warmStart
H authenticationFailure

B

warmStart

authenticationFailure

H linkUp
H linkDown

SNMP Trap Description Possible Cause

warmStart The unit has reinitialized

itself.
The trap is sent after the

unit resets and stabilizes.
There are no

variable-bindings.

SNMP T rap Description Possible Cause

authenticationFailure Failed attempts to access

the unit.
There are no

variable-bindings.

H Reset command.
H Power disruption.

Three unsuccessful attempts
were made to enter a correct
login/password combination.

7975-A2-GB20-40

December 1998

B-1

Standards Compliance for SNMP Traps

linkUp and linkDown

The link SNMP traps are:

H linkUp – The unit recognizes that one of the communication interfaces is

operational.

H linkDown – The unit recognizes that one of the communication interfaces is

not operational.

The network and synchronous port interfaces (physical sublayer) are represented
by an entry in the MIB-II interfaces table and supported by the DS1 MIB.

The following list describes the conditions that define linkUp and linkDown:

linkUp/Down Variable-Bindings

H ifIndex (RFC 1573)

This object provides the index into the ifTable and potentially into tables in other MIBs.
The values of ifIndex are the same for all models, although not all indexes are
supported for each model.

The ifIndex included with the trap consists of:

– 1 COM Port
– 2 SDSL E1 Interface, Port 1
– 10 Synchronous Data Port, Port 1

H ifAdminStatus (RFC 1573)

This object specifies the operational state of the interface:

– up(1)

SDSL Network: DSL link is established.
Synchronous Data Port: Port is enabled and both CTS and DSR are ON.

– down(2)

SDSL Network: DSL link is not established.
Synchronous Data Port: Port is disabled or CTS or DSR is OFF.

– testing(3)

A test is active on the interface.

H ifOperStatus (RFC 1573)

This object contains the same value as ifAdminStatus.

H ifType (RFC 1573)

This object is the type of interface:

– propPointToPointSerial(22)

Used for the synchronous data port and EOC.

– sdsl(96)

Used for the SDSL network interface.

B-2

7975-A2-GB20-40December 1998