Paradyne HOTWIRE 7900 User manual

HOTWIRE
MODEL 7900
BASIC MAINTENANCE
PROCESSOR
USER’S GUIDE
Document No. 7900-A2-GB20-00
March 1998
Copyright 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.
Trademarks
All products and services mentioned herein are the trademarks, service marks, registered trademarks or registered
service marks of their respective owners.
Warranty, Sales, and Service Information
Contact your local sales representative, service representative, or distributor directly for any help needed. For
additional information concerning warranty, sales, service, repair, installation, documentation, training, distributor
locations, or Paradyne worldwide office locations, use one of the following methods:
Via the Internet: Visit the Paradyne World Wide Web site at http://www.paradyne.com
Via Telephone: Call our automated call system to receive current information via fax or to speak with a
company representative.
— Within the U.S.A., call 1-800-870-2221
— Outside the U.S.A., call 1-727-530-2340
Printed on recycled paper
A
March 1998
7900-A2-GB20-00
Important Regulatory Information
Important Safety Instructions
1. Read and follow all warning notices and instructions marked on the product or included in the manual.
2. Slots and openings in the cabinet are provided for ventilation. To ensure reliable operation of the product and to
protect it from overheating, these slots and openings must not be blocked or covered.
3. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the
power cord.
4. Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous
high voltage points or other risks. Refer all servicing to qualified service personnel.
5. General purpose cables are provided with this product. Special cables, which may be required by the regulatory
inspection authority for the installation site, are the responsibility of the customer.
6. When installed in the final configuration, the product must comply with the applicable Safety Standards and
regulatory requirements of the country in which it is installed. If necessary, consult with the appropriate regulatory
agencies and inspection authorities to ensure compliance.
7. A rare phenomenon can create a voltage potential between the earth grounds of two or more buildings. If
products installed in separate buildings are interconnected, the voltage potential may cause a hazardous
condition. Consult a qualified electrical consultant to determine whether or not this phenomenon exists and, if
necessary, implement corrective action prior to interconnecting the products.
8. In addition, if the equipment is to be used with telecommunications circuits, take the following precautions:
— Never install telephone wiring during a lightning storm.
— Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
— Never touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface.
— Use caution when installing or modifying telephone lines.
— Avoid using a telephone (other than a cordless type) during an electrical storm. There may be a remote risk of
electric shock from lightning.
— Do not use the telephone to report a gas leak in the vicinity of the leak.
7900-A2-GB20-00
March 1998
B
Important Regulatory 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.
In order to maintain compliance with FCC Part 15 Rules, the ferrite choke must be installed on the V.35
cable. Refer to the installation instructions.
! WARNING:
To Users of Digital Apparatus in Canada:
This Class A digital apparatus meets all requirements of the Canadian interference-causing equipment
regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du règlement sur le matérial
brouilleur du Canada.
C
March 1998
7900-A2-GB20-00
Contents
About This Guide
H Document Purpose and Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . v
H Document Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
H Product-Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
1
About the Hotwire Model 7900 Basic Maintenance Processor
H What is the MTU-M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
H MTU-M Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
H User Interface Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
MTU-M Installation Procedures
H Package Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
H Installing the MTU-M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
H Connecting the Primary Nest to Additional Nests . . . . . . . . . . . . . . . . . . . . 2-3
Expansion Nest Numbering Sequence . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
H Connecting External Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
3
Initial Setup Instructions
H Accessing the System for the First Time . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
H Entering Initial Network Configuration (Netconfig) Parameters . . . . . . . . 3-2
H Entering Initial System Configuration (Sysconfig) Parameters . . . . . . . . . 3-3
H Additional Sysconfig Setup Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
4
System Terminal Interface
H Connecting a System Terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Connecting Your System Terminal Through the MTU-M
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Accessing the MTU-M Through a Modem . . . . . . . . . . . . . . . . . . . . . . . 4-3
H MTU-M Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Menu On/Off Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
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i
Contents
5
MTU-M Status and Performance Functions
H Viewing Status from your System Terminal . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Viewing the General Status of all xTU-Cs . . . . . . . . . . . . . . . . . . . . . . . 5-2
Viewing the Detailed Status of a specific xTU-C . . . . . . . . . . . . . . . . . 5-4
H Accessing Performance Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
6
MTU-M Maintenance Functions
H Accessing MTU-M Maintenance Menu Functions . . . . . . . . . . . . . . . . . . . . 6-1
Viewing the MTU-M Date and Time (date) . . . . . . . . . . . . . . . . . . . . . . 6-2
Changing MTU-M Date and Time (time_set) . . . . . . . . . . . . . . . . . . . . 6-3
Changing MTU-M Operational Parameters (sysconfig) . . . . . . . . . . . 6-4
Changing MTU-M Network Parameters (netconfig) . . . . . . . . . . . . . . . 6-7
Silencing External Alarms (ACO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Clearing MTU-M Alarms and Status Information (clear) . . . . . . . . . . . 6-10
Clearing XTU-C Alarms from the MTU-M (al_clear) . . . . . . . . . . . . . . 6-11
Taking the xTU-C out of the MTU-M Polling Cycle (stoppoll) . . . . . . . 6-12
Placing the xTU-C Back into the MTU-M Polling Cycle (pollstart) . . . 6-12
7
MTU-M Front Panel
H What to Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
H MTU-M Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
H Alarm Cut Off (ACO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
H Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
8
MTU-M Alarms
H Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
H Accessing MTU-M Alarm Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Alarm On/Off Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Display Alarm Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
H Alarm Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Major Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Clearing Major Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Abnormal Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Clearing Abnormal Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
H Resetting the MTU-M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
H Resetting the xTU-C/R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
ii
March 1998
7900-A2-GB20-00
Contents
9
Testing
H Detecting a Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
H Understanding Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
H Accessing Loopback Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Running a Local Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Running a Remote Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
H Ending a Loopback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
H HDSL T1 Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Local Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5
H HDSL E1 Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Local Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
H SDSL E1 Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
Local loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8
Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
H SDSL T1 Loopback Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Local loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10
Remote Loopback Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-11
A
Cable Pin Assignments
H Terminal Connection Cable Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . A-1
B
Netconfig and Sysconfig Menu Values
C
SNMP Traps
H SNMP Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
warmStart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
linkUp and linkDown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Glossary
Index
7900-A2-GB20-00
March 1998
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iv
March 1998
7900-A2-GB20-00
About This Guide
Document Purpose and Intended Audience
This guide contains information needed to install, configure, and operate the
Hotwire Model 7900 Basic Maintenance Processor (also known as an MTU-M
nest card) for nest-mounted Hotwire 7900 termination units.
It is expected that readers of this document are central office/site (CO) or special
service installation technicians or network engineers who have an understanding
of digital subscriber line systems and High-bit-rate Digital Subscriber Loop
(HDSL) and Symmetric Digital Subscriber Loop (SDSL) transmission systems
plus the deployment of such systems in a telephone company or private network
environment.
Document Summary
7900-A2-GB20-00
Section
Description
Chapter 1
About the Hotwire Model 7900 Basic Maintenance
Processor. Describes the features of the Model
7900-F1-500 and typical configurations.
Chapter 2
MTU-M Installation Procedures. Describes how to install the
MTU-M in the Hotwire Model 7900 Nest and connect
multiple adjacent nests.
Chapter 3
Initial Setup Instructions. Provides initial setup instructions
for the MTU-M, including initial IP addressing and system
operational settings.
Chapter 4
System Terminal Interface. Provides procedures for
connecting a VT100-compatible system terminal to the
MTU-M front panel or nest rear panel. This chapter also
provides procedures to access MTU-M functions through a
modem.
Chapter 5
MTU-M Status and Performance Functions. Describes how
to monitor the status and performance of nest card
termination units.
March 1998
v
About This Guide
Section
Description
Chapter 6
MTU-M Maintenance Functions. Describes how to view and
change MTU-M operational parameters.
Chapter 7
MTU-M Front Panel. Describes how to monitor nest card
termination unit alarms using the MTU-M front panel LEDs.
Chapter 8
MTU-M Alarms. Describes how to access, display, and reset
MTU-M alarm functions.
Chapter 9
Testing. Provides procedures for performing loopback
testing on xTU-C/R pairs.
Appendix A
Cable Pin Assignments. Contains connector and interface
details.
Appendix B
Standards Compliance for SNMP Traps. Contains SNMP
trap information.
Appendix C
Netconfig and Sysconfig Menu Values Table. Contains a
table with default MTU-M settings and a column to record
your initial system configuration.
Glossary
Defines acronyms and terms used in this document.
Index
Lists key terms, acronyms, concepts, and sections in
alphabetical order.
Product-Related Documents
Document Number
Document Title
7900-A2-GN20
Hotwire Model 7900 Nest and Options Installation
Guide
7910-A2-GB20
Hotwire Model 7914 and 7915 T1 and E1 SDSL Nest
Card Termination Units User’s Guide
7914-A2-GB20
Hotwire Model 7914 Standalone T1 SDSL
Termination Unit User’s Guide
7915-A2-GB20
Hotwire Model 7915 Standalone E1 SDSL
Termination Unit User’s Guide
7920-A2-GB20
Hotwire Models 7924 and 7925 T1 and E1 HDSL
Nest Card Termination Units User’s Guide
7924-A2-GB20
Hotwire Model 7924 Standalone T1 HDSL
Termination Unit User’s Guide
7925-A2-GB20
Hotwire Model 7925 Standalone E1 HDSL
Termination Unit User’s Guide
7925-A2-GB22
Hotwire Model 7925 Standalone T1 HDSL
Termination Unit, G.703 Interface, User’s Guide
Contact your sales or service representative to order additional product
documentation.
Paradyne documents are also available on the World Wide Web at:
http://www.paradyne.com
Select Service & Support → Technical Manuals
vi
March 1998
7900-A2-GB20-00
About the Hotwire Model 7900
Basic Maintenance Processor
1
What is the MTU-M
The Hotwiret Model 7900 Basic Maintenance Processor (MTU-M) card is a
processor circuit card assembly (CCA) that mounts into a Hotwire Model 7900
Nest. It is used to monitor the status of the Hotwire Digital Subscriber Line (DSL)
cards and Hotwire Remote Termination Units (RTUs) from either of the following:
H
A Network Management System using Simple Network Management
Protocol (SNMP) through the Ethernet port located on the Model 7900 Nest
back panel
H
A local asynchronous terminal through the MTU-M’s VT100 serial port
located on the MTU-M front panel
MTU-M
POWER
FAIL
NMS LINK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
The MTU-M is installed in Slot 1 of the Hotwire Model 7900 Nest and monitors
the performance and status of the following models of nest card termination units
and their associated remote termination units:
ACO
ACTIVE
RESET
C
O
N
S
O
L
E
97-15665
7900-A2-GB20-00
Model Number
Description
7914-B1-xxx
7915-B1-xxx
7924-B1-xxx
7925-B1-xxx
SDSL T1 DSX-1
SDSL E1 G.703
HDSL T1 DSX-1
HDSL E1 G.703
The Hotwire Model 7900 19-inch nest holds up to 16 nest-mounted termination
units (15 with the MTU-M installed). A standard 19-inch by 72-inch equipment
rack can house four nests for a total of 64 nest cards.
March 1998
1-1
About the Hotwire Model 7900 Basic Maintenance Processor
If you have multiple nests, the MTU-M is installed in the top nest (Nest 1) and that
nest is then referred to as the primary nest. Additional expansion nests are
connected to the primary nest through RJ48 connectors located on the nest rear
panel (refer to Chapter 2, MTU-M Installation Procedures).
Nest card termination units are referred to as xTU-C/Rs. The x refers to either H
for HDSL termination units or S for SDSL termination units. The xTUs configured
as central office/site (CO) are referred to as xTU-Cs. The xTU-C’s associated
CP-configured units are referred to a xTU-Rs. The MTU-M monitors only those
xTUs configured as CO. The status of the associated CP-configured unit (xTU-R),
nest-mounted or standalone, is monitored through the xTU-C.
The Hotwire Model 7900 Nest and nest card termination units are described in
separate user’s guides. Refer to Product-Related Documents in About this Guide
for information on other manuals.
MTU-M
POWER
FAIL
NMS LINK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
ACO
ACTIVE
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
LOCAL
REMOTE
LOOP BK
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
RESET
C
O
N
S
O
L
E
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
HDSL
LOS / BER
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
LOOP 1
LOOP 2
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
Nest Card
Termination Units (xTU-C/R)
1-2
March 1998
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
98-15632-01
7900-A2-GB20-00
About the Hotwire Model 7900 Basic Maintenance Processor
MTU-M Standard Features
The MTU-M allows you to:
H
Monitor and display network and loop performance statistics for up to 79 nest
card termination units and their associated remote termination units (Refer to
Chapter 5, MTU-M Status and Performance Functions).
H
Monitor network status remotely from an SNMP manager (Refer to
Chapter 5, MTU-M Status and Performance Functions)
H
Monitor system (MTU-M) and network alarms (Refer to Chapter 8, MTU-M
Alarms)
H
Perform loopback testing on the nest cards and their associated remote
termination units (Refer to Chapter 9, Testing)
H
Reset the system (MTU-M) or individual nest card termination units (Refer to
Chapter 8, MTU-M Alarms)
H
Connect external alarms to the Model 7900 nest (Refer to Chapter 2, MTU-M
Installation Procedures)
User Interface Types
There are three types of user interfaces to the MTU-M card:
7900-A2-GB20-00
H
System terminal (refer to Chapter 4, System Terminal Interface) – Provides
a menu-driven interface to the MTU-M that allows you to monitor and test
HDSL and SDSL nest card termination units configured as CO. The system
maintenance terminal can be any VT100-compatible terminal.
H
MTU-M front panel (refer to Chapter 7, MTU-M Front Panel) – Provides
LEDs and push buttons to allow you to monitor system alarms, reset the
MTU-M and silence external alarms.
H
Ethernet Port (10BaseT) – Provides the MTU-M with an interface, through
the Hotwire Model 7900 Nest back panel, to your Network Management
System using SNMP.
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1-3
About the Hotwire Model 7900 Basic Maintenance Processor
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1-4
March 1998
7900-A2-GB20-00
MTU-M Installation Procedures
2
Package Checklist
Verify that your package contains the following:
- A Hotwire Model 7900 MTU-M
- System terminal cable (9 pin-to-9 pin)
- Warranty card
Installing the MTU-M
The procedures in this guide assume that you have already installed the Hotwire
Model 7900 Nest. Installation of the Hotwire Model 7900 Nest and nest card
termination units is described in separate user’s guides. Refer to Product-Related
Documents in About this Guide.
! HANDLING PRECAUTIONS FOR
STATIC-SENSITIVE DEVICES
496-15104
7900-A2-GB20-00
This product is designed to protect sensitive components from damage
due to electrostatic discharge (ESD) during normal operation. When
performing installation procedures, however, take proper static control
precautions to prevent damage to equipment. If you are not sure of the
proper static control precautions, contact your nearest sales or service
representative.
March 1998
2-1
MTU-M Installation Procedures
" Procedure
To install the MTU-M:
NOTE:
A maximum of four Hotwire Model 7900 nests can be installed into one
standard 72-inch equipment rack. If more than one nest is installed in the
same equipment rack, install the MTU-M in slot 1 of the top nest. The nest
containing the MTU-M is referred to as the primary nest.
1. Remove the MTU-M from any protective packaging.
2. Align the circuit board with the top and bottom card guides of Slot 1.
MTU-M Slot 1
OK
FAIL
SELECT
NEXT
NETWORK
LOS/AIS/BER
LOCAL
REMOTE
REMOTE
LOOP BK
ALARMS
MAJOR
MINOR
ABNORM
MTU-M
POWER
FAIL
NMS LINK
SYSTEM
POWER
FAIL
MODEMS
ALARMS
MAJOR
MINOR
ABNML
ACO
ACTIVE
SDSL
LOS / BER
LOOP
ACO
ACTIVE
RESET
C
O
N
S
O
L
E
97-15598
3. Slide the MTU-M into the slot until the backplane connector plug is seated
firmly into the backplane.
4. Tighten the retaining screws at the top and bottom of the MTU-M front panel.
2-2
March 1998
7900-A2-GB20-00
MTU-M Installation Procedures
Connecting the Primary Nest to Additional Nests
Connections between nests are only made from the primary nest (Nest 1) to each
expansion nest (Nests 2, 3, and 4). Connecting the primary nest to an expansion
nest allows the MTU-M to monitor the nest card termination units in Nests 2, 3,
and 4.
" Procedure
To connect the primary nest to each expansion nest:
1. Connect the primary nest and Nest 2 by connecting the nest expansion cable
between J28 (TO 2) on the primary nest to J26 (FROM 1) on Nest 2.
2. Connect the primary nest and Nest 3 by connecting the nest expansion cable
between J29 (TO 3) on the primary nest to J26 (FROM 1) on Nest 3.
3. Connect the primary nest and Nest 4 by connecting the nest expansion cable
between J27 (TO 4) on the primary nest to J26 (FROM 1) on Nest 4.
Nest 2
TO 4
POWER
Nest 1
(Primary)
P6
TO 4
P5
POWER J27
Alarms
TO 2
–48vB
Agnd
–48vA
Bgnd
–48vB
Agnd
–48vA
J28
RS232
Modem
TO 3
J29
FROM 1
J27
TO 2
J28
TO 3
J29
10BaseT
J26
DB25
FROM 1
J26
AUI
Network
Management
DB15
Nest 3
Local Loop
TO 4
TO 4
POWER
Bgnd
–48vB
Agnd
–48vA
J27
POWER
TO 2
Bgnd
–48vB
Agnd
–48vA
J28
TO 3
J29
J27
TO 2
J28
TO 3
J29
FROM 1
J26
FROM 1
J26
Nest 4
TO 4
POWER
Bgnd
–48vB
Agnd
–48vA
J27
TO 2
J28
TO 3
J29
FROM 1
J26
97-15414
7900-A2-GB20-00
March 1998
2-3
MTU-M Installation Procedures
Expansion Nest Numbering Sequence
A fully populated equipment rack with four 19-inch Hotwire Model 7900 nests and
one MTU-M holds 63 nest card termination units. There are 15 nest card
termination units in the first nest (primary nest with MTU-M installed) and 16 in
each adjacent nest. Nest card termination units are numbered from left to right
(from the front of the nest) as follows:
In Nest . . .
Nest Cards are Numbered . . .
1 (primary)
2–16
2
21–36
3
41–56
4
61–76
NOTE:
MTU-M menus allow you to select xTU IDs from 2–80. This number reflects a
potential 23-inch nest option. Each 23-inch nest would hold up to 20 nest
card termination units. A fully populated equipment rack (with four 23-inch
nests) could contain up to 80 nest cards (a single MTU-M and 79 termination
units).
Connecting External Alarms
The MTU-M provides dry alarm contacts that allow you to connect external
alarms to the nest rear panel at J21. The Alarm contacts are energized by the
MTU-M upon detection of an alarm condition. Each alarm relay, when closed,
connects your alarm power to your common to complete your Major and
Abnormal alarm circuits. The Minor alarm relay is not currently supported.
" Procedure
To connect your external alarms to the rear panel alarm terminal (J21):
1. Connect alarm ground to the terminal labeled COM.
MAJ
M IN
ABNM
COM
A larm s
TO 4
P O W E R J27
B gnd
–48vB
A gnd
–48vA
P6
J21
P5
A larm s
TO 2
J28
R S 232
M odem
TO 3
J29
FROM 1
10B aseT
J26
D B 25
N etw ork
M anagem ent
AU I
D B 15
P7
Local Loop
97-15654
2. Connect your abnormal alarm circuit to the terminal labeled ABNM.
3. Connect your major alarm circuit to the terminal labeled MAJ.
2-4
March 1998
7900-A2-GB20-00
Initial Setup Instructions
3
Accessing the System for the First Time
When you install the MTU-M for the first time you must enter network
configuration and system operational parameters for the MTU-M. This chapter
provides the setup procedures needed to initially configure the MTU-M.
NOTE:
MTU-M initial setup procedures must be performed locally from a VT100
connected through the DB9 Console port on the MTU-M front panel.
7900-A2-GB20-00
March 1998
3-1
Initial Setup Instructions
Entering Initial Network Configuration (Netconfig)
Parameters
The recommended order for entering network configuration parameters is:
H
MTU-M IP address
H
Subnet Mask
H
Default Gateway
H
SNMP Manager Address
H
Default Gateway Address
H
System Name, Contact, and Location
NOTE:
The default values are recorded in Appendix B, Netconfig and Sysconfig
Menu Values. When changing network configuration values, it is helpful to
write the values down in the table provided in Appendix B for future
reference. Default values have ben provided.
" Procedure
To enter initial network configuration parameters information:
1. At the MTU-M–> prompt, type m.
The Maintenance menu displays.
2. At the maint–> prompt, type net.
The Netconfig menu displays. This screen contains the current network
management information.
3. At the netconfig–> prompt, press Enter.
A prompt appears asking you if you wish to change the current values.
4. Type y at the yes/no prompt and press Enter.
The system displays the default settings.
5. Type new at the password prompt. You can change your password from the
Network Parameters menu.
The changes you make at the Netconfig menu are stored in a working buffer.
If you make an error or are unsure of your changes, do not save your
changes. The system will return to the previous values.
6. Change Netconfig menu option values as required. Refer to Changing
MTU-M Network Parameters (netconfig) in Chapter 6, MTU-M Maintenance
Functions.
7. Type q to exit the Netconfig menu.
8. At the yes/no prompt, type y and press Enter to save your changes.
3-2
March 1998
7900-A2-GB20-00
Initial Setup Instructions
Entering Initial System Configuration (Sysconfig)
Parameters
Use the following procedure to set your initial system configuration parameters
from the System Terminal.
NOTE:
Default values are recorded in Appendix B, Netconfig and Sysconfig Menu
Values. When changing network configurations, it is helpful to first write the
current values down in the table provided in Appendix B.
" Procedure
To enter initial system configuration parameters:
1. At the MTU-M–> prompt, type m.
The Maintenance menu displays.
2. At the maint–> prompt, type sys.
The Sysconfig menu displays. This screen contains the current system
configuration parameters.
3. At the sysconfig–> prompt, press Enter.
A prompt appears asking you if you wish to change the current values.
4. Type y at the yes/no prompt and press Enter.
The system displays the default settings.
5. Type new at the password prompt. You can change your password from the
Netcofig menu.
The changes you make at the Sysconfig menu are stored in a working buffer.
If you make an error or are unsure of your changes, do not save your
changes. The system will return to the previous values.
6. Change Sysconfig values as required. Refer to Changing MTU-M Operational
Parameters (sysconfig) in Chapter 6, MTU-M Maintenance Functions.
NOTE:
When setting system configuration parameters, refer to Additional Sysconfig
Setup Considerations on page 3-4 for an example of how to configure the
Polling Interval and Pollto options.
7. Type q to exit the Sysconfig menu.
8. Type y at the yes/no prompt and press Enter to save your changes.
7900-A2-GB20-00
March 1998
3-3
Initial Setup Instructions
Additional Sysconfig Setup Considerations
Depending on the number of nest cards you have, you may need to adjust the
Polling Range, Polling Interval, and Pollto options on the Sysconfig menu:
H
Polling Range – Defines the range of nest cards that the MTU-M will poll.
Adjust the polling range to match the number of total nest cards in your
system starting with slot 2.
H
Polling Interval – Denotes the time the MTU-M waits between successive
starts of the polling cycle. If all of the nest cards can not be polled in this
amount of time they may be skipped.
H
Pollto – Denotes the maximum amount of time, in 256th seconds, that the
MTU-M will wait between the polling of each line card.
For example, if you have 51 nest cards:
1. Set your polling range from 2–51 (slot 1 is the MTU-M).
2. Set initial Pollto to 50/256th seconds (.195 seconds).
3. Set Polling Interval to10 (51 nest cards * .195 seconds = 9.945)
If you find that all of your nest cards are not being polled, you may need to
adjust these values.
3-4
March 1998
7900-A2-GB20-00
System Terminal Interface
4
Connecting a System Terminal
You can connect a system terminal directly or through a modem to the MTU-M
front panel. The system terminal must be a VT100-compatible terminal or a PC
running emulation software.
The system terminal provides a menu-driven interface to the MTU-M card that
allows you to:
H
Monitor the status of HDSL and SDSL nest card termination units (xTUs)
configured as central site/office (CO) (xTU-Cs)
H
Monitor the status of associated customer premises (CP) termination units
(xTU-R)
H
Perform loopback testing on xTU-C/R pairs
H
Change MTU-M operational and network parameters
H
Reset the unit
NOTE:
The MTU-M monitors only those nest card termination units configured as
central office/site (CO) (xTU-C). The status of an xTU-C’s associated CP
configured unit (xTU-R) is monitored through the xTU-C.
7900-A2-GB20-00
March 1998
4-1
System Terminal Interface
Connecting Your System Terminal Through the MTU-M Front Panel
" Procedure
To connect your system terminal to the 9-pin connector on the MTU-M front
panel:
1. Connect the terminal cable (included) into a COM port on your system
terminal.
MTU-M
POWER
FAIL
NMS LINK
NETWORK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
LOS/AIS/BER
LOCAL
REMOTE
LOOP BK
System Terminal
SYSTEM
POWER
FAIL
ACO
ACTIVE
DB9
RESET
C
O
N
S
O
L
E
HDSL
LOS / BER
LOOP A
LOOP B
DB9
(Cable Provided)
97-15658
2. Plug the other end into the 9-pin jack on the MTU-M front panel.
If your PC requires a 25-pin connector to the COM port, see Appendix A,
Cable Pin Assignments, for the correct cable pinouts.
3. Set your terminal parameters as follows:
— 9600 baud
— 8 bit
— no parity
— 1 stop bit
— no flow control
4. Press Enter to activate the MTU-M Main Menu.
The MTU-M performs a series of diagnostic tests and reports the status of
each xTU-C to the system terminal upon initialization. After a few moments,
the MTU-M Main Menu appears on your terminal. MTU-M menus are
described in detail in Chapters 5–8.
4-2
March 1998
7900-A2-GB20-00
System Terminal Interface
Accessing the MTU-M Through a Modem
You can access the MTU-M through a modem using the DB9 connector on the
MTU-M front panel.
" Procedure
To connect your system terminal to the MTU-M through a modem using the
MTU-M front panel DB9 connector:
1. Connect one end of the cable (supplied) to the MTU-M front panel.
2. Connect the other end of the cable to the modem using one of the following
methods:
— The DB9 to DB25 connection can be made using the terminal cable
supplied with the MTU-M and the following standard cable accessories:
79xx
MTU-M
POWER
FAIL
NMS LINK
NETWORK
LOS/AIS/BER
MODEMS
ALARMS
MAJOR
MINOR
ABNML
LOCAL
REMOTE
LOOP BK
SYSTEM
POWER
FAIL
ACO
DB9F
ACTIVE
Modem
DB9F/DB25M
RESET
C
O
N
S
O
L
E
HDSL
LOS / BER
LOOP A
LOOP B
DB9
79xx
Terminal
Cable
Terminal
Cable
DB9
RXD 3
TXD 2
Gnd 5
DB9 M/M
Gender
Changer
Gender
Change
DB9F
3
2
5
DB9 M/M
3
2
5
DB25F/DB25M
Null Modem
Adapter or Cable
DB9/DB25
DB9F
3
2
5
DB25M
2
3
7
Null Modem
DB25F DB25M
2
3 RXD
3
2 TXD
7
7 Gnd
97-15634
— Or you can customize a cable as follows:
79xx
MTU-M
POWER
FAIL
NMS LINK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
NETWORK
LOS/AIS/BER
LOCAL
REMOTE
LOOP BK
SYSTEM
POWER
FAIL
ACO
ACTIVE
DB25M
RESET
C
O
N
S
O
L
E
HDSL
LOS / BER
LOOP A
LOOP B
Pin #
RXD 3
TXD 2
Gnd 5
7900-A2-GB20-00
Modem
DB9
Pin #
3 RXD
2 TXD
7 Gnd
March 1998
97-15635
4-3
System Terminal Interface
3. Set your modem parameters as follows:
— 9600 baud
— 8 bit
— no parity
— 1 stop bit
— disable or suppress result codes
MTU-M Main Menu
The MTU-M automatically boots up upon power up or MTU-M reset and displays
a series of status messages as the MTU-M polls and receives information from
each xTU-C. After polling of the primary nest (Nest 1) is complete, the MTU-M
Main Menu appears. The polling of secondary nests (Nest 2, 3, and 4) continues
after the Main Menu appears.
Commands can be entered as complete words (status, alarm on, alarm off) or
can be abbreviated to the minimum number of characters that uniquely identify it
from other options. In most cases typing the first one or two characters of the
command is sufficient (for example, s for status).
NOTE:
Throughout this document the menu path taken to access the screen is
provided at the top of each screen sample.
The MTU-M Main Menu screen appears as follows:
Menu path: Main
MTU-M Maintenance Processor Main Menu
Select Command:
COMMAND
DESCRIPTION
Status
Performance
LoopBack
Reset
Alarms
Maintenance
Version
–
–
–
–
–
–
–
Display System xTU–C/R status
Display xTU–C/R line statistics
Perform LoopBack Function
Reset Command for xTU–C/R’s
MTU–M alarms log functions
MTU–M maintenance functions
MTU–M firmware version, serial number
MTU–M –>
4-4
March 1998
7900-A2-GB20-00
System Terminal Interface
Menu On/Off Feature
The MTU-M displays a list of options for each menu level. Once you have
become familiar with these menu options you can use the Menu Off command to
suppress these menu options.
To suppress menu options, type menu off at any MTU-M prompt and press
Enter. Only MTU-M prompts are displayed. The current menu can be displayed at
any time by typing ? at any MTU-M prompt.
To restore menu options, type menu on at any MTU-M prompt and press Enter.
Menu option are restored to the terminal.
The Menu On/Off feature default setting can be set to on or off using the
Sysconfig option from the Maintenance menu.
7900-A2-GB20-00
March 1998
4-5
System Terminal Interface
This page intentionally left blank.
4-6
March 1998
7900-A2-GB20-00
MTU-M Status and Performance
Functions
5
Viewing Status from your System Terminal
The MTU-M allows you to monitor the general alarm, polling, and circuit status of
all xTU-Cs or view the detailed status of a specific xTU-C. The status of the
associated xTU-R is monitored through the xTU-C.
To access the MTU-M Status menu from the MTU-M Main menu, type s at the
MTU-M –> prompt and press Enter. The following menu appears:
Menu path: Main → Status
Select Command:
COMMAND
all
<2-80>
Quit
DESCRIPTION
–
–
–
–
enter ALL to select all valid xtu’s
enter xtu id <2-80>
Current polling range: (2 to 76)
Quit Command
For status, enter xtu id or ALL:
7900-A2-GB20-00
March 1998
5-1
MTU-M Status and Performance Functions
The following table provides a description of the Status menu options:
Option
Function
all
Displays Alarm, Polling, and Circuit status for all xTUs configured as CO.
<2—80>
Displays detailed status information for the selected xTU-C/R pair. If no
remote unit is connected, only status for the CO side is displayed.
Quit
Takes you back to the MTU-M Main Menu.
Viewing the General Status of all xTU-Cs
To access the status of all xTU-Cs, type a at the Status –> prompt and press
Enter. A table containing Alarm, Polling, and Circuit status information for all
xTU-Cs appears as follows:
Menu path: Main → Status → all
System Status
xTU-C/R
DSL Type
ALARM
POLL
CIRCUIT
|
|
|
|
|
|
3
HTU
*
INS
OOS
7
HTU
INS
INS
9
STU
* *
OOS
---
12
STU
MOS
---
Hit return to continue ...
5-2
March 1998
7900-A2-GB20-00
MTU-M Status and Performance Functions
The following table provides a description of the System Status screen:
Status
Function
DSL type
Indicates the type of card, HTU (HDSL Termination Unit), STU (SDSL
Termination Unit), or xTU (unknown card type).
Alarm
The position of the asterisk within the field indicates the alarm status of
each xTU-C.
*
*
*
– Major alarm (far left)
– Minor Alarm (middle, not used at this time)
– Abnormal alarm (far right)
The System Status screen example indicates a Major alarm at
HTU-C/R 3 and a Major and Abnormal alarm at STU-C/R 9.
Poll
Indicates the communications status between the MTU-M and xTU-C.
INS
– In service. The xTU-C is currently in the MTU-M polling cycle.
Polling rate is selectable from the Maintenance menu.
OOS – Out of service. The xTU-C/R was previously detected
and is currently out of service.
MOS – Maintenance out of service. The xTU-C/R has been
manually taken out of the MTU-M polling cycle.
The System Status screen example indicates that STU-C/R 9 is OOS
and STU-C/R 12 was placed in MOS.
Circuit
Indicates the communications status between the xTU-C/R pair.
INS – In service. The xTU-C is in service.
OOS – Out of service. The xTU-C/R pair is not communicating with
the MTU-M.
- - - - – xTU-C is in MOS or OOS. The xTU-C has been manually
taken out of the MTU-M polling loop and is not being monitored.
The System Status screen example indicates that HTU-C/R 3 circuit
status is OOS.
7900-A2-GB20-00
March 1998
5-3
MTU-M Status and Performance Functions
Viewing the Detailed Status of a specific xTU-C
To access the status of an individual termination unit configured as CO, type the
ID number of the termination unit at the For status, enter xtu id or ALL: prompt
and press Enter. The status of the selected termination unit appears as follows:
Menu path: Main → Status → (2-80)
(Screen 1 of 2)
Status Of HDSL Circuit #3
Major alarm .........
Minor alarm .........
Abnormal condition...
OFF
OFF
OFF
______________________________HTU–C___________
MTU-M poll state .....
In service
Circuit state Loop A .
In service
Circuit state Loop B .
In service
Network input signal .
In service
DTR Signal ...........
DSR Signal ...........
S/N Ratio Loop A ....
42.0 dB
S/N Ratio Loop B .....
42.5 dB
HTU-R_____
In service
In service
In service
N/A
Active
Active
43.0 dB
43.5 dB
Hit return to continue ...
The following table provides definitions of the fields contained on Screen 1 of the
Circuit Status screen:
Status
Function
MTU-M poll state
Indicates the MTU-M Polling status of the xTU-C/R pair
selected.
H In service
H Out of service
H Poll MOS (maintenance out of service)
Circuit state Loop A
Indicates the communications status of Loop A.
H In service
H Out of service
H N/A
Circuit state Loop B
(HDSL only)
Indicates the communications status of Loop B (HDSL only).
H In service
H Out of service
H N/A
5-4
March 1998
7900-A2-GB20-00
MTU-M Status and Performance Functions
Status
Function
Network input signal
Indicates the status of the network input signal.
H In service
H Out of service
H N/A
DTR Signal
(V.35 CP units only)
Indicates the Data Terminal is ready to transmit and receive
data.
DSR Signal
(V.35 CP units only)
Indicates the Data Set is ready to transmit and receive data.
S/N Ratio Loop A
Displays the signal-to-noise ratio of Loop A.
S/N Ratio Loop B
(HDSL only)
Displays the signal-to-noise ratio of Loop B.
Press Enter to view the remaining status of the termination unit.
Menu path: Main → Status → (2-80)
(Screen 2 of 2)
Status of xDSL Circuit #3
__________________________
Card type
Loop Mode
Loopback
Line encoding
Line build out
Frame type
Starting time slot
V.35 Payload Rate
V.35 Transmit Timing
DSP software revision
DSL software revision
DSL software checksum
card serial #
xTU–C______________
xDSL E1/G703
Loops A & B
OFF
B8ZS
0 to 133 feet
D4
1
1.17
6.0
737e
87464
xTU-R_____
xDSL E1/V.35
Loops A & B
OFF
B8ZS
0 to 133 feet
1984 Kbps (31x64)
Loop
1.17
7.0
837e
85565
Hit Return to continue ...
7900-A2-GB20-00
March 1998
5-5
MTU-M Status and Performance Functions
The following table provides definitions of the fields contained on Screen 2 of the
Circuit Status screen:
Option
Function
Card type
Identifies xTU-C and xTU-R type.
H HDSL E1/T1
H SDSL E1/T1
Loop Mode
(HDSL only)
Identifies which loop or loops are in use.
H Loop A
H Loop B
H Loops A & B
Loopback
Indicates loopback testing status.
H On
H Off
Line encoding
Identifies type of line encoding currently in use.
H HDB3
H B8ZS
H AMI
Line build out
Indicates the current line build out for the xTU-C/R pair.
For G.703-compatible units:
H 120 ohm
H 75 ohm
For DSX-1-compatible units:
H 0 to 133 feet
H 133 to 266 feet
H 266 to 399 feet
H 399 to 533 feet
H 533 to 655 feet
Frame type
Indicates type of framing in use by the xTU-C/R pair.
H Framed
H ESF
H D4
H Unframed
5-6
Starting time slot
Specifies the starting tine slot for a V.35 to DSX-1 or V.35
to G.703 configuration.
V.35 Payload Rate
Specifies the V.35 CP payload rate (64 through
1536 kbps).
V.35 Transmit Timing
Indicates where the xTU-R timing source (V.35 CP units
only).
DSP Software revision
Displays the DSP software revision of the xTU-C/R pair.
DSL Software revision
Displays the DSL software revision of the xTU-C/R pair.
DSL Software checksum
Displays the DSL software checksum for the xTU-C/R
pair.
Card serial #
Displays the serial numbers of the xTU-C/R pair.
March 1998
7900-A2-GB20-00
MTU-M Status and Performance Functions
Accessing Performance Functions
MTU-M performance functions allow you to view current and past performance
information for an individual xTU-C. Performance functions can only be accessed
from a system terminal.
NOTE:
Performance statistics are files of data accumulated and stored by the
MTU-M for each nest card termination unit. Swapping or removing nest card
termination units does not clear the data stored in these files within the
MTU-M. It is recommended that you clear performance statistics as soon as
possible after replacing or removing an xTU-C to avoid displaying incorrect
data.
" Procedure
To access the MTU-M Performance functions:
1. Type p at the MTU-M –> prompt and press Enter.
A menu displays allowing you to select an xTU-C.
2. Enter an xTU-C ID and press Enter.
The following menu displays:
Menu path: Main → Performance → xDSL circuit # (2-80)
Select Time Period Menu
Select Command:
COMMAND
A – Prev
B – Curr
C – Prev
D – Curr
E – Prev
F – Curr
G – Prev
I – Curr
J – Prev
K – Curr
L – Prev
M – Clear
Quit
1 min
15 min
15 min
1 hr
1 hr
12 hr
12 hr
24 hr
24 hr
7 day
7 day
–
–
–
–
–
–
–
–
–
–
–
–
–
DESCRIPTION
Select previous 1 minute time period
Select current 15 minute time period
Select previous 15 minute time period
Select current 1 hour time period
Select previous 1 hour time period
Select current 12 hour time period
Select previous 12 hour time period
Select current 24 hour time period
Select previous 24 hour time period
Select current 7 day time period
Select previous 7 day time period
Clear Performance Stats for All Time Periods
Quit Command
Select time period->
7900-A2-GB20-00
March 1998
5-7
MTU-M Status and Performance Functions
3. Enter a time interval and press Enter.
The requested performance data appears.
Performance statistic data is stored in intervals of 1 minute, 15 minutes,
1 hour, 12 hours, 24 hours, and 7 days. Choosing a previous interval allows
you to view the last complete time interval. Selecting a current interval allows
you to view the most current time interval. Current intervals may not contain a
complete time cycle.
For example, if you type e (prev 1 hr) at the Select time period –> prompt,
the last full hour of data captured is displayed. Typing f (Curr 1 hr) displays
from 1–59 minutes of the most current data.
NOTE:
If you take the xTU-C out of the MTU-M polling cycle (stoppoll from the
Maintenance Menu), performance data is no longer collected by the MTU-M.
You can view the most recently collected data by selecting a current time
period (options B, D, F, I, and K) that is greater than the amount of time the
xTU-C has been out of service.
Menu path: Main → Performance → xDSL circuit # (2-80) → time interval
The STU Line Error Statistics Table for STU #7 for the previous 15
minutes
CO: SDSL E1/G.703
CP: SDSL E1/G.703
CV
FAS
BPV
HTU-C Network
Input
14
0
0
Signal
HTU-R Network
Input
Signal
0
FAW A
HTU-C
HDSL
Circuit
2
0
FEBE A
46
HTU-R
HDSL
2
33
Circuit
Hit return to continue ...
5-8
March 1998
0
CRC A
16
34
7900-A2-GB20-00
MTU-M Status and Performance Functions
The following table provides definitions of the fields contained in the Line Error
Statistics table:
7900-A2-GB20-00
Field
Contains
CV
(E1 only)
Code Violation – Displays the number of code violations detected
within the specified time period.
MOS
(T1 only)
Multi-frame Out of Sync – Indicates the number of multiframes
received out of synchronization within the specified time period.
FAS (D4 framing
only)
Frame Alignment Signal – Indicates the number of times a loss of
signal (LOS) error was detected within the specified time period.
CRC (ESF
framing only)
Cyclic Redundancy Check – Indicates the number of network CRC
errors detected within the specified time period.
BPV
Bipolar Violation – Indicates the number of bipolar errors detected
within the specified time period.
FAW A
Frame Alignment Word (Loop A) – Indicates the number of times
a loss of synchronization error was detected in Loop A within the
specified time period.
FEBE A
Far End Bit Error (Loop A) – Indicates the number of errors
reported by the remote equipment for Loop A.
CRC A
Cyclic Redundancy Check (Loop A) – Indicates the number of
CRC errors detected on Loop A.
FAW B
(HDSL only)
Frame Alignment Word (Loop B) – Indicates the number of times
a loss of synchronization error was detected within the specified
time period in Loop B.
FEBE B
(HDSL only)
Far End Bit Error (Loop B) – Indicates the number of errors
reported by the remote equipment for Loop B.
CRC B
(HDSL only)
Cyclic Redundancy Check (Loop B) – Indicates the number of
CRC errors detected on Loop B.
March 1998
5-9
MTU-M Status and Performance Functions
This page intentionally left blank.
5-10
March 1998
7900-A2-GB20-00
MTU-M Maintenance Functions
6
Accessing MTU-M Maintenance Menu Functions
MTU-M Maintenance functions allow you to:
H
Set and view the MTU-M date and time
H
Change MTU-M system configuration parameters
H
Change MTU-M network configuration parameters
H
Start, stop, and control cycle time of MTU-M status polling
H
Clear MTU-M alarm and status registers
To access the MTU-M Maintenance functions from the MTU-M Main Menu,
type m at the MTU-M –> prompt. The Maintenance menu appears as follows:
Menu path: Main → Maintenance
Maintenance Menu
Select Command:
COMMAND
time_set
date
sysconfig
netconfig
aco
clear
al_clear
stoppoll
pollstart
Quit
DESCRIPTION
–
–
–
–
–
–
–
–
–
–
set date and time – yy/mm/dd hh:mm:ss [am/pm]
show date and time
Display/modify MTU–M system configuration parameters
Display/modify MTU–M network configuration parameters
turn on ACO alarm cut off
clear xtu’s alarm and status info
clear xtu’s alarms
Set status to polling maintenance out of service
Resume polling
Quit Command
maint –>
7900-A2-GB20-00
March 1998
6-1
MTU-M Maintenance Functions
The following table provides a description of the Maintenance menu options:
Command
Function
time_set
Allows you to set the MTU-M time and date. The time and date are used
for alarm logging.
date
Displays current MTU-M time and date.
sysconfig
Displays current operating parameter settings and provides a menu for
changing the MTU-M operating parameters.
netconfig
Displays current network parameter settings and provides a menu for
changing the MTU-M network configuration.
aco
Toggles the alarm cutoff relay on and off.
clear
Clears all information about a specified xTU from the MTU-M’s status and
alarm logs. This command is useful when an xTU has been removed
from the nest.
al_clear
Clears the current alarm from the MTU-M. This command does not clear
historical performance data.
stoppoll
Stops the MTU-M from polling a specified xTU-C. The operation of the
xTU is not affected; stoppoll only suspends communication between the
MTU-M and the specified xTU.
pollstart
Resumes polling of a specified xTU by the MTU-M.
Quit
Returns you to the MTU-M Main Menu.
Viewing the MTU-M Date and Time (date)
" Procedure
To view the current MTU-M date and time:
1. From the Maintenance menu, type d at the maint –> prompt and press Enter.
The current date and time are displayed.
6-2
March 1998
7900-A2-GB20-00
MTU-M Maintenance Functions
Changing MTU-M Date and Time (time_set)
" Procedure
To change the MTU-M date or time:
1. From the Maintenance Menu, type t at the maint –> prompt and press Enter.
2. Enter the new date and time in the format shown and press Enter.
Menu path: Main → Maintenance → time_set
Maintenance Menu
Select Command:
COMMAND
time_set
date
sysconfig
netconfig
aco
clear
al_clear
stoppoll
pollstart
Help or ?
Quit
DESCRIPTION
–
–
–
–
–
–
–
–
–
–
–
set date and time – yy/mm/dd hh:mm:ss [am/pm]
show date and time
Display/modify MTU–M system config parameters
Display/modify MTU–M network config parameters
turn on ACO alarm cut off
clear xtu’s status & alarm
clear xtu’s alarms
Set status to polling maintenance out of service
Resume polling
Command Help
Quit Command
maint –>t
yy/mm/dd hh:mm:ss [am/pm]
Time:
7900-A2-GB20-00
March 1998
6-3
MTU-M Maintenance Functions
Changing MTU-M Operational Parameters (sysconfig)
The sysconfig option on the Maintenance menu is used to display and change
several parameters that affect MTU-M operation. Type sys at the maint –>
prompt, to display the Operating Parameters screen (values displayed depend on
your current configuration):
NOTE:
If in the course of making changes you want to start over with the current
settings, use the read option. This resets the operations parameters back to
their current values.
Changes to MTU-M operational parameters do not take effect until you Quit the
MTU-M Operations Parameters menu and save your changes.
Menu path: Main → Maintenance → sysconfig
MTU–M Operations Parameters
EEPROM values are:
Polling Range:
Polling interval:
Poll time-out on 256th’s second
Initial alarm on/off setting:
Initial menu on/off setting:
Console port baud rate:
VALID
2 – 16
10 seconds
30
ON
ON
9600 baud
Hit return to continue ...
Would you like to modify values? [Y/N]:: Y
You must enter password to modify values: ***
The following values have been copied to a work buffer and
individual changes will be made to the variables in the work buffer.
When finished with changes, enter <quit>
and you will be asked if you want the changes saved.
Hit return to continue ...
6-4
March 1998
7900-A2-GB20-00
MTU-M Maintenance Functions
The following table provides a description of the operations parameters:
Field
Function
EEPROM values are
Displays the current status of the xTU-C EEPROM values.
Polling Range
Displays the maximum and minimum xTU-C polling address.
The maximum possible xTU-C address is the right-most card
in the lowest nest. Refer to Expansion Nest Numbering
Sequence, in Chapter 2, MTU-M Installation Procedures, for
the xTU numbering sequence.
Polling interval
Indicates the amount of time the MTU-M waits between
successive starts of the polling cycle. If all of the nest cards
can not be polled in this amount of time they may be
skipped.
Polling time-out
Denotes the maximum amount of time, in 256th seconds,
that the MTU-M will wait between the polling of each line
card.
Initial alarm on/off
setting
Indicates whether or not alarms are automatically displayed
on the system terminal as they occur.
Initial menu on/off
setting
Indicates whether or not menus are displayed on the system
terminal.
Console port baud rate
Indicates the baud rate for the system terminal.
Menu path: Main → Maintenance → sysconfig (Enter)
MTU–M Operations Parameters Menu
Select Command:
COMMAND
DESCRIPTION
max xtu
–
min xtu
–
polling interval –
pollto
–
alarm
–
menu
–
console
–
read
–
Quit
–
set the maximum xtu polling address
set the minimum xtu polling address
set active circuit polling time interval
set polling time-out length
change initial alarm on/off setting
change initial menu on/off setting
set console port baud rate
re–read the EEPROM
Quit Command
op param–>
7900-A2-GB20-00
March 1998
6-5
MTU-M Maintenance Functions
The following table provides a description of the Operations Parameters Menu.
maxhtu
Valid Values: 2 to 80
Default Setting: 80
Sets the maximum xTU polling address. xTU addressing counts the number of slots in
the nests, from left to right, top to bottom. The maximum possible xTU address is the
right-most card in the lowest nest. Refer to Expansion Nest Numbering Sequence in
Chapter 2, MTU-M Installation Procedure, for the multiple nest numbering sequence.
minhtu
Valid Values: 2 to 80
Default Setting: 2
Sets the minimum xTU polling address. Refer to the addressing scheme described for
maxhtu above. Since the MTU-M takes up the first slot in Nest 1 (primary), the xTU next
to the MTU-M is address #2. Refer to Expansion Nest Numbering Sequence in
Chapter 2, MTu-M Installation Procedure, for the multiple nest numbering sequence.
polling interval
Valid Values: 0 to 255 seconds
Default Setting: 10
Indicates the amount of time the MTU-M waits between successive starts of the polling
cycle. If all of the nest cards can not be polled in this amount of time they may be
skipped.
pollto
Valid Values: 0 to 256 in 256th seconds
Default Setting: 30
Determines polling cycle time for the nonactive circuits in the nest. Nonactive circuits
are those termination units for which a “stoppoll” command has been issued.
alarm
Valid Values: ON, OFF
Default Setting: ON
Determines at time of initial boot-up whether or not alarms are automatically displayed
on the system terminal as they occur.
menu
Valid Values: ON, OFF
Default Setting: ON
Determines at time of initial boot-up whether or not menus are displayed on the system
terminal.
console
Valid Values: 75, 100, 134.5, 150, 300, 600, 1200, 1800, 2000, 2400, 4800,
9600, or 19200
Default Setting: 9600
Sets the baud rate for the system terminal.
6-6
March 1998
7900-A2-GB20-00
MTU-M Maintenance Functions
Changing MTU-M Network Parameters (netconfig)
The Netconfig option on the Maintenance menu is used to display and change
network parameters that affect MTU-M. Type net at the maint –> prompt, to
display the Network Configuration Menu screen (values displayed depend on
your current network configuration):
Changes to MTU-M Network parameters do not take effect until you Quit the
MTU-M Operations Parameters menu and save your changes.
Menu path: Main → Maintenance → netconfig
(Screen 1 of 3)
maint–>net
MTU–M Network Parameters
1
2
3
4
5
6
7
8
-Mac Address
-My IP Address
-Subnet Mask
-Default Gateway
-SNMP Manager Address
-Default Gateway Address
-System Contact
-System Name
-System Location
:
:
:
:
:
:
:
:
:
000.000.000.000
000.000.000.000
255.255.255.0
255.255.255.255
000.000.000.000
255.255.255.169
System Contact – Who
System Name – What (MTUM)
System Location — Where
Hit return to continue ...
7900-A2-GB20-00
March 1998
6-7
MTU-M Maintenance Functions
The following table provides a description of the network management options:
Field
Function
IP Address
Contains the IP address of the MTU-M card itself.
Subnet Mask
Contains the Subnet Mask of the MTU-M card.
SNMP Manager
Address
Contains the IP Address of your SNMP Manager.
Default Gateway
Address
Contains the address of the gateway that is to be used to reach
hosts that are not on the same subnet as the MTU-M.
Broadcast Address
Indicates whether or not alarms are automatically displayed
on the system terminal as they occur.
System Contact
Allows you to enter up to 128 ASCII characters. This field is
for informational purposes only.
System Name
Allows you to enter up to 128 ASCII characters. This field is
for informational purposes only.
System Location
Allows you to enter up to 128 ASCII characters. This field is
for informational purposes only.
Change Password
Allows you to change your MTU-M password. The default
password is new.
Menu path: Main → Maintenance → netconfig
(Screen 2 of 3)
Would you like to modify values? [Y/N]:: Y
You must enter password to modify values: new
The following values have been copied to a work buffer and
individual changes will be made to the variables in the work buffer.
When finished with changes, enter <quit>
and you will be asked if you want the changes saved.
Hit return to continue ...
6-8
March 1998
7900-A2-GB20-00
MTU-M Maintenance Functions
Menu path: Main → Maintenance → Netconfig
(Screen 3 of 3)
maint–>net
MTU–M Network Parameters
COMMAND
-Mac Address
1 -My IP Address
2 -Subnet Mask
3 -SNMP Manager Address
4 -Default Gateway
5 -Broadcast Address
6 -System Contact
7 -System Name
8 -System Location
9-Change Password
-
set ip address
set subnet mask
set snmp manager address
set default gateway address
set broadcast address
set broadcast address
set name of contact
set node’s fully qualified domain
set the physical location of mtu
Change the administrator password
Hit return to continue ...
Silencing External Alarms (ACO)
The Alarm Cut Off (ACO) option on the Maintenance menu is used to shut off an
external alarm condition. The MTU-M front panel ACO LED lights to indicate ACO
is on. The MTU-M front panel also contains an ACO push-buton.
" Procedure
To turn on ACO:
1. Type a at the maint –> prompt and press Enter.
or
2. Press the recessed ACO push button on the MTU-M front panel.
3. The ACO LED on the MTU-M front panel lights and the following message
appears:
I MTU-M
MONITOR TASK
Wed Mar 18 00:19:56 1998
turn on ACO
The ACO LED is turned off when the alarm condition that caused the external
alarm has cleared.
7900-A2-GB20-00
March 1998
6-9
MTU-M Maintenance Functions
Clearing MTU-M Alarms and Status Information (clear)
The clear option on the Maintenance menu is used to clear the current MTU-M
alarms and status information for a specific xTU.
NOTE:
Performance data is accumulated and stored by the MTU-M for each xTU.
Swapping or removing an xTU-C does not clear the data stored in these files
within the MTU-M. It is recommended that you clear performance statistics as
soon as possible after replacing or removing an xTU-C to avoid displaying
incorrect data.
" Procedure
To clear status and alarms:
1. Type c at the maint –> prompt.
2. Press Enter.
3. Enter the ID of the xTU (xtu id) you wish to clear.
Menu path: Main → Maintenance → clear
Maint ->clear
Select Command:
COMMAND
<2-80>
Quit
DESCRIPTION
–
–
–
enter xtu id <2-80>
(Current polling range: 2 to 16
Quit Command
enter xtu id:
For example, to clear the status and alarms of the xTU-C in Slot 5 of the primary
nest, type 5 at the enter htu id: prompt and press Enter. The following message
appears:
maint –>
I HTU-C/R 5
MUI TASK
status and alarms cleared
6-10
March 1998
Wed Oct 20
15:19:56 1997
7900-A2-GB20-00
MTU-M Maintenance Functions
Clearing XTU-C Alarms from the MTU-M (al_clear)
The al_clear option on the Maintenance menu is used to clear the current MTU-M
alarms for a specific xTU.
" Procedure
To clear alarms:
1. Type al at the maint –> prompt.
2. Press Enter.
3. Enter the ID of the xTU (xtu id) you wish to clear.
Menu path: Main → Maintenance → clear
Maint ->al_clear
Select Command:
COMMAND
<2-80>
Quit
DESCRIPTION
–
–
–
enter xtu id <2-80>
(Current polling range: 2 to 16
Quit Command
enter xtu id:
The following message appears:
maint –>
I HTU-C/R 5
MUI TASK
alarms cleared
7900-A2-GB20-00
March 1998
Wed mar 18
15:19:56 1998
6-11
MTU-M Maintenance Functions
Taking the xTU-C out of the MTU-M Polling Cycle (stoppoll)
The stoppoll option on the Maintenance menu is used to halt the monitoring and
alarm reporting of a specific xTU-C/R pair by removing it from the MTU-M polling
cycle.
NOTE:
Communications between the xTU-C/R pair are not affected; however,
removing the xTU-C from the polling cycle generates an abnormal alarm at
the MTU-M front panel (refer to Chapter 7, MTU-M Front Panel, for
information on MTU-M front panel LEDs).
" Procedure
To remove an xTU-C from the MTU-M polling cycle:
1. Type stop at the maint –> prompt and press Enter.
2. Type the ID of the xTU-C (xtu id) you wish to remove from the MTU-M polling
cycle.
The following message appears:
Polling Maintenance Out of Service takes an xTU-C/R out of the
MTU-M’s polling loop. This does not affect xTU-C/R’s operation,
but disables the MTU-M’s communications with the xTU-C/R.
3. Press Enter.
The following message appears:
I HTU-C/R 3
MUI TASK
xTU-C/R placed in Polling MOS
Wed Jul 1 15:10:26 1997
Placing the xTU-C Back into the MTU-M Polling Cycle (pollstart)
The pollstart option on the Maintenance Menu is used to restart the monitoring
and alarm reporting of an xTU-C by placing it back in the MTU-M polling cycle.
" Procedure
To place an xTU-C back into the MTU-M polling cycle:
1. Type p at the maint –> prompt and press Enter.
2. Type the ID of the xTU-C (xtu id) you want to place back into the MTU-M
polling cycle.
The following message appears:
I HTU-C/R 3
MUI TASK
Wed Sept 14:02:37 1997
xTU-C/R removed from Polling MOS
6-12
March 1998
7900-A2-GB20-00
MTU-M Front Panel
7
What to Monitor
The MTU-M allows you to monitor the health and status of an xTU-C/R pair from
the MTU-M front panel. The MTU-M front panel consists of:
MTU-M
POWER
FAIL
NMS LINK
MODEM
ALARMS
MAJOR
MINOR
ABNML
H
Major, minor, and abnormal alarm LEDs
H
Alarm Cut Off (ACO) push button and LED to shut off external alarms
You can also monitor system and xTU-C/R status from a terminal connected to
the MTU-M (refer to Chapter 4, System Terminal Interface, and Chapter 5,
MTU-M Status and Performance Functions).
ACO
ACTIVE
RESET
C
O
N
S
O
L
E
97-15665
7900-A2-GB20-00
March 1998
7-1
MTU-M Front Panel
MTU-M Front Panel LEDs
The MTU-M front panel LEDs indicate the presence of system, network, and loop
error conditions. If a Major or Abnormal alarm condition exists in the network or
loop, the MAJOR and ABNML alarm LEDs light indicating there is an alarm
condition. Further isolation of the alarm condition is performed using the system
terminal. Minor alarm circuitry is not currently used.
Alarm Cut Off (ACO)
The ACO push button and LED allow you to manually shut off external alarms
generated by the MTU-M. After pressing ACO, the ACO LED lights indicating
ACO is active. ACO does not prevent alarms from being reported to the MTU-M
system terminal.
Reset
The RESET push button allows you to manually reset the MTU-M. This feature
performs the same reset of the MTU-M provided by the Reset option from the
Main Menu screen.
7-2
March 1998
7900-A2-GB20-00
MTU-M Alarms
8
Overview
This chapter provides instructions on how to:
H
Configure alarm parameters for the Hotwire 7900 MTU-M, and
H
Display alarms.
The MTU-M monitors and stores alarms. These alarms are then displayed
automatically or manually from the MTU-M front panel or VT100-compatible
terminal. MTU-M front panel alarms are described in Chapter 7, MTU-M Front
Panel. Alarms can be selected to be automatically displayed at the
VT100-compatible terminal as they occur or suppressed from automatic display and
displayed manually.
7900-A2-GB20-00
March 1998
8-1
MTU-M Alarms
Accessing MTU-M Alarm Functions
To access the MTU-M Alarms menu from the MTU-M Main Menu, type a at the
MTU-M –> prompt and press Enter. The Alarms menu appears as follows:
Menu path: Main → Alarms
MTU-M Alarms Menu
Select Command:
COMMAND
DESCRIPTION
Alarm on
Display MTU-M alarms
(Case sensitive, or use ’ALARM ON’)
Turn off display of MTU-M alarms
(Case sensitive, or use ’ALARM OFF’)
Reset Alarm Display Pointer
Display MTU-M alarms
Redisplay MTU-M alarms
Quit Command
–
–
Alarm off –
–
Clear
–
Display
–
Redisplay –
Quit
–
Alarms ->
8-2
Command
Function
Alarm on
Allows alarms to display at the system terminal.
Alarm off
Prevents alarms from displaying at the system terminal.
Clear
Clears the current MTU-M alarm buffer.
Display
Allows you to group and view alarms by category, view individual alarms,
or view all alarms. Refer to the screen samples following this table for
further detail on the display alarm function.
Redisplay
Allows you to redisplay the last alarms viewed.
Quit
Takes you back to the MTU-M Main Menu.
March 1998
7900-A2-GB20-00
MTU-M Alarms
Alarm On/Off Options
The MTU-M allows you to prevent alarms from being displayed at the system
terminal.
Alarms can be suppressed from view at the system terminal by typing alarm off at
any MTU-M prompt on the system terminal. The alarm off function only prevents
alarms from being displayed at the system terminal. Alarms can be redisplayed at
the system terminal by typing alarm on at any prompt. MTU-M Alarms can be
viewed manually at the system terminal using the display alarm command from the
MTU-M Alarms menu. The MTU-M display alarm function allows you to:
H
Select alarms by level (all, major, abnormal)
H
Select an individual xTU-C alarm, all alarms, or system alarms (MTU-M)
H
Select the number of alarms to view (from 1–255 or all)
Display Alarm Option
This section provides instructions on how to use the MTU-M display alarm
function.
To view a single alarm or a group of alarms from a single xTU-C, multiple xTU-C,
or the MTU-M you must:
7900-A2-GB20-00
H
Select an alarm level (all, major, abnormal), then
H
Select an individual xTU-C alarm, all alarms, or system alarms (MTU-M),
then
H
Select the number of alarms you wish to view (from 1–255 or all)
March 1998
8-3
MTU-M Alarms
" Procedure
1. Type d at the Alarms –> prompt and press Enter.
The Alarm Level Display menu appears as follows:
Menu path: Main → Alarms → Display
Alarms ->d
Alarm Level Display Menu
Select Command:
COMMAND
All
Major
Minor
Info
Both
Quit
DESCRIPTION
–
–
–
–
–
–
Select all alarm levels
Select Major alarms only
Select Minor alarms only
Select Info alarms only
Select Major and Minor alarms
Quit Command
select alarm level –>
2. Select an alarm category from the Alarm Level Display menu.
NOTE:
Minor alarms are not currently used.
8-4
March 1998
7900-A2-GB20-00
MTU-M Alarms
The following menu appears, allowing you to select an individual xTU-C id
(2–80), system (MTU-M), or all alarms for display:
Menu path: Main → Alarms → Display → alarm level
select alarm level –>major
Select Command:
COMMAND
all
system
<2-80>
Quit
DESCRIPTION
–
–
–
–
enter ALL to select all xtu’s
enter SYSTEM to select MTU-M
enter xtu id <2-80>
Quit Command
enter xtu id or SYSTEM or ALL:
3. Enter the alarm level from the id menu.
The following menu appears, allowing you to select the number of alarms to
display:
Menu path: Main → Alarms → Display → alarm level → (xtu id, system, all)
Select Command:3
COMMAND
Quit
all
<0-255>
DESCRIPTION
– Quit Command
– enter ALL to select all valid entries
– enter a number:
enter number of alarms to display:
7900-A2-GB20-00
March 1998
8-5
MTU-M Alarms
4. Select the number of alarms to display and press Enter. The following is an
example of the alarm display format:
Menu path: Main → Alarms → Display → alarm level → (xtu id, system, all) →
(all, 0-255)
I HTU C/R 3
HSTATUS TASK
Wed June
Polling state change detected for HTU
polling state HTU 3
I HTU C/R 5
HSTATUS TASK
Wed June
status received from new card
I HTU C/R 6
HSTATUS TASK
Wed June
status received from new card
I HTU C/R 8
HSTATUS TASK
Wed June
Polling state change detected for HTU
polling state HTU 3
I HTU C/R 5
HSTATUS TASK
Wed June
status received from new card
30
3
00:00:13 1997
30
00:00:19 1997
30
00:00:48 1997
30
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00:00:53 1997
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Hit ’q’ to quit or return to continue ...
Alarm Definitions
The following section defines major and abnormal alarms. Minor alarms are not
currently used.
Major Alarms
Major alarms occur when:
8-6
H
The xTU-C polling state changes from in service (INS) to out of service
(OOS).
H
The CP or CO carrier changes from up to down (not an alarm condition for
V.35).
H
The status of Loop A or Loop B changes from up to down at the CO or CP.
March 1998
7900-A2-GB20-00
MTU-M Alarms
Clearing Major Alarms
Major alarms can be cleared:
H
Automatically when the xTU-C polling state changes from out of service
(OOS) back to in service (INS).
H
Automatically when the CO or CP carrier is restored.
H
Manually by selecting the Clear option from the MTU-M Maintenance menu.
Abnormal Alarms
Abnormal alarms occur when an xTU-C is placed in maintenance out of service
(MOS). Placing an xTU-C in MOS takes the xTU-C out of the MTU-M polling
cycle, allowing maintenance to be performed without continuously displaying
alarms.
Clearing Abnormal Alarms
Abnormal alarms are automatically cleared when an xTU-C is placed back in
service.
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March 1998
8-7
MTU-M Alarms
Resetting the MTU-M
The reset option allows you to reset the system (MTU-M) or a specific xTU-C/R
pair.
" Procedure
To reset the MTU-M:
1. At the MTU-M Main Menu screen MTU-M–> prompt, type r and press Enter.
The select command menu appears and prompts you to enter an xTU id or
system (to reset the MTU-M).
2. Type s at the Enter xtu id or system: prompt and press Enter.
The following message appears:
Are you sure you want to reset the MTU-M? (Y/N)?
3. Type Y and press Enter.
The MTU-M resets and clears all stored performance and alarm data.
After resetting the MTU-M, the status of each xTU-C displays.
Resetting the xTU-C/R
" Procedure
To reset an individual xTU-C/R pair:
1. Type r at the MTU-M–> prompt and press Enter.
The select command menu appears and prompts you enter an xTU id or
system.
2. Type the ID of an xTU-C (2–80) at the Enter xtu id or system: prompt and
press Enter.
The following message appears:
Are you sure you want to reset the xTU-C/R? (Y/N)?
3. Type Y and press Enter.
The MTU-M sends a reset command to the xTU-C/R pair. The xTU-C/R
resets and sends updated status information to the MTU-M.
8-8
March 1998
7900-A2-GB20-00
Testing
9
Detecting a Problem
The MTU-M can detect and report problem conditions and allow you to perform
diagnostic testing of the xTU-C/R pair. The MTU-M offers a number of indicators
to alert you to possible problems, as described in Chapter 7, MTU-M Front Panel.
Once you have detected a problem, you can further isolate the problem to your
local equipment, remote equipment, or the copper lines.
Understanding Loopbacks
A loopback is a diagnostic function that enables a technician to isolate equipment
on the DSL circuit to determine where on the circuit trouble may be occurring.
Loopback takes the system offline. Data received from T1 or E1 application
equipment is looped back as shown in the following sections.
Local and remote refer to the point at which the data is looped back. In a local
loopback, the data is reflected back by the local unit (the unit that initiated the
loopback). In a remote loopback, the data is passed on to the remote (far-end)
unit and then reflected back.
Local and Remote loopback tests may be initiated from either the CO or CP end
of the loop, however, the MTU-M only communicates with the the local xTU-C
(CO).
7900-A2-GB20-00
March 1998
9-1
Testing
Accessing Loopback Functions
To access loopback functions, type l (for local) at the MTU-M –> prompt and
press Enter. The following menu appears allowing you to select local or remote
loopback testing:
Menu path: Main → Loopback
Select Command:
COMMAND
Local
Remote
Quit
DESCRIPTION
– Local xTU?
– Remote xTU?
– Quit Command
Select local or remote –>
9-2
March 1998
7900-A2-GB20-00
Testing
Running a Local Loopback
" Procedure
To run a local loopback:
1. Type l (for local) at the Select local or remote –> prompt and press Enter.
A screen appears and you are prompted to enter an xTU id.
2. Enter the number of the xTU-C you are performing loopback testing on and
press Enter.
The following message appears:
I HTU C/R
HSTATUS TASK
State change received from DSL 7
HTU-C loopback is ON
MON JAN 1 01:29:05 1997
Running a Remote Loopback
The MTU-M prevents loopback tests from being run for 1 minute after power is
initially applied to the MTU-M or system reset is performed.
" Procedure
To run a remote loopback:
1. At the Select local or remote –> prompt, type r (for remote) and press Enter.
A screen appears and you are prompted to enter an xTU id:
2. Enter the number of the xTU-C you want to perform loopback testing on and
press Enter.
The following message appears:
I HTU C/R
HSTATUS TASK
State change received from DSL 7
HTU-R loopback is ON
MON JAN 1 01:35:10 1997
Ending a Loopback
To stop a local or remote loopback test, repeat the steps in Running a Local
Loopback and Running a Remote Loopback.
A message stating that the xTU-C/R loopback test is off appears.
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March 1998
9-3
Testing
HDSL T1 Loopback Tests
Local Loopback Test
When a local loopback is enabled, the red Loop Bk LED on the front panel of the
initiating unit (CO or CP) lights up and remains lit until the loopback is disabled.
CO
Nest
CP
Diagnostic
Equipment
Diagnostic
Equipment
E1 HDSL
7900
7900
Loop Bk
LED Lights
97-15630
VT100 Terminal
or Emulator
Figure 9-1. Local Loopback, Initiated at the CO Unit
CO
Diagnostic
Equipment
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15631
Figure 9-2. Local Loopback, Initiated at the CP Unit
9-4
March 1998
7900-A2-GB20-00
Testing
Remote Loopback Test
When a remote loopback is enabled, the red Loop Bk LED on the front panel of
remote-end unit (CO or CP) lights up and remains lit until the loopback is
disabled. The loopback LED on the initiating unit does not light. A message
appears on the remote end unit reporting that it has been put into loopback.
CO
Diagnostic
Equipment
CP
AIS
E1 HDSL
E1 HDSL
7900
7900
7900
7900
Diagnostic
Equipment
Loop Bk
LED lights
AIS = Alarm Indication Signal
97-15515
Terminal
Figure 9-3. Remote Loopback, Initiated at the CO Unit
CO
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15629
Figure 9-4. Remote Loopback, Initiated at the CP Unit
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March 1998
9-5
Testing
HDSL E1 Loopback Tests
Local Loopback Test
When a local loopback is enabled, the red Loop Bk LED on the front panel of the
local unit lights up and remains lit until the loopback is disabled.
CO
Nest
CP
Diagnostic
Equipment
Diagnostic
Equipment
E1 HDSL
7900
7900
Loop Bk
LED Lights
97-15630
VT100 Terminal
or Emulator
Figure 9-5. Local Loopback, Initiated at the CO Unit
CO
Diagnostic
Equipment
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15631
Figure 9-6. Local Loopback initiated at the CP Unit
9-6
March 1998
7900-A2-GB20-00
Testing
Remote Loopback Test
When a remote loopback is enabled, the red Loop Bk LED on the front panel of
the remote (far-end) unit lights up and remains lit until the loopback is disabled.
The Loop Bk LED on the local (initiating) unit does not light.
CO
Nest
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Loop Bk
LED Lights
97-15628
VT100 Terminal
or Emulator
Figure 9-7. Remote Loopback initiated at the CO unit
CO
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15629
Figure 9-8. Remote Loopback initiated at the CP Unit
7900-A2-GB20-00
March 1998
9-7
Testing
SDSL E1 Loopback Tests
Local loopback Test
When a local loopback is enabled, the red Loop Bk LED on the front panel of the
local unit lights up and remains lit until the loopback is disabled.
CO
Nest
CP
Diagnostic
Equipment
Diagnostic
Equipment
E1 HDSL
7900
7900
Loop Bk
LED Lights
97-15630
VT100 Terminal
or Emulator
Figure 9-9. Local Loopback Initiated by the CO Unit
CO
Diagnostic
Equipment
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15631
Figure 9-10. Local Loopback Initiated by the CP Unit
9-8
March 1998
7900-A2-GB20-00
Testing
Remote Loopback Test
When a remote loopback is enabled, the red Loop Bk LED on the front panel of
the remote (far-end) unit lights up and remains lit until the loopback is disabled.
The Loop Bk LED on the local (initiating) unit does not light.
CO
Nest
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Loop Bk
LED Lights
97-15628
VT100 Terminal
or Emulator
Figure 9-11. Remote Loopback Initiated by the CO unit
CO
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15629
Figure 9-12. Remote Loopback Initiated by the CP Unit
7900-A2-GB20-00
March 1998
9-9
Testing
SDSL T1 Loopback Tests
Local loopback Test
When a local loopback is enabled, the red Loop Bk LED on the front panel of the
local unit lights up and remains lit until the loopback is disabled.
CO
Nest
CP
Diagnostic
Equipment
Diagnostic
Equipment
E1 HDSL
7900
7900
Loop Bk
LED Lights
97-15630
VT100 Terminal
or Emulator
Figure 9-13. Local Loopback Initiated by the CO Unit
CO
Diagnostic
Equipment
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15631
Figure 9-14. Local Loopback Initiated by the CP Unit
9-10
March 1998
7900-A2-GB20-00
Testing
Remote Loopback Test
When a remote loopback is enabled, the red Loop Bk LED on the front panel of
the remote (far-end) unit lights up and remains lit until the loopback is disabled.
The Loop Bk LED on the local (initiating) unit does not light.
CO
Nest
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Loop Bk
LED Lights
97-15628
VT100 Terminal
or Emulator
Figure 9-15. Remote Loopback Initiated by the CO unit
CO
CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Diagnostic
Equipment
Nest
Loop Bk
LED Lights
VT100 Terminal
or Emulator
97-15629
Figure 9-16. Remote Loopback Initiated by the CP Unit
7900-A2-GB20-00
March 1998
9-11
Testing
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9-12
March 1998
7900-A2-GB20-00
Cable Pin Assignments
A
Terminal Connection Cable Pin Assignments
This section defines the pin assignments for the terminal cable from the front
panel DB9 connector jack to your system terminal’s COM port.
If your system terminal COM port requires a 9-pin D-shell connector, use the
following pin assignments.
DB9
DB9
RXD
3
3
RXD
TXD
2
2
TXD
GND
5
5
GND
RTS
7
7
RTS
CTS
8
8
CTS
97-15702
7900-A2-GB20-00
March 1998
A-1
Cable Pin Assignments
If your system terminal COM port requires a 25-pin D-shell connector, use the
following pin assignments.
NOTE:
You can build a custom cable using industry-standard cable accessories or
connect a generic DB9-to-DB25 adapter to the terminal cable supplied with
the HTU-M.
9-Pin
25-Pin
RXD
3
2
RXD
TXD
2
3
TXD
GND
5
7
GND
CTS
8
4
RTS
RTS
7
5
CTS
97-15703
A-2
March 1998
7900-A2-GB20-00
Netconfig and Sysconfig Menu
Values
B
Record your system (operational) configuration parameters.
Field
Default Value
Polling Range
2-80
Polling interval
5
Pollto
25/256th seconds
Initial alarm on/off
setting
ON
Initial menu on/off
setting
ON
Console port baud rate
9600
Current Value
Record your network management configuration parameters.
7900-A2-GB20-00
Field
Default Value
IP Address
000.000.000.000.000
Subnet Mask
000.000.000.000.000
SNMP Manager
Address
0:192.1.1.2
Default Gateway
Address
000.000.000.000.000
Broadcast Address
255.255.255.255.255
System Contact
who?
System Name
what? (MTUM)
System Location
where?
March 1998
Current Value
B-1
Netconfig and Sysconfig Menu Values
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B-2
March 1998
7900-A2-GB20-00
SNMP Traps
C
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
linkUp
H
linkDown
warmStart
SNMP Trap
Description
Possible Cause
warmStart
The unit has reinitialized
itself.
H Reset command.
H Power disruption.
The trap is sent after the
unit resets and stabilizes.
There are no
variable-bindings.
7900-A2-GB20-00
March 1998
C-1
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.
SNMP Trap
Description
Possible Cause
linkUp
The interface for the local
or remote unit is up.
H Units are up
H MTU-M completed initial
power up or reset
linkDown
C-2
The interface for the local
or remote unit is down.
March 1998
H One of the unit’s network
interfaces is down
7900-A2-GB20-00
Glossary
AMI
Alternate Mark Inversion. A line coding technique used to accommodate the ones density
requirements of E1 or T1 lines.
BPV
Bipolar Violation. In a bipolar signal, a one (mark, pulse) which has the same polarity as its
predecessor.
Bridged tap
Any part of the local loop that is not in the direct talking path between the CO and the
service user.
CD
Carrier Detect. A signal indicating that energy exists on the transmission circuit.
Associated with Pin 8 on an EIA-232 interface.
Champ connector
64-pin connector used to connect the E1/T1 network or local loop to the HotWire 7900
Nest connectors J5, J6, and J7.
CO
Central Office/Central Site. The PSTN facility that houses one or more switches serving
local telephone subscribers.
COM port
Communications port. A computer’s serial communications port used to transmit to and
receive data from a modem. The modem connects directly to this port.
CP
Customer Premises.
CPE
Customer Premises Equipment. Terminal equipment on the service user’s side of the
telecommunications network interface.
CRC
Cyclic Redundancy Check. A mathematical method of confirming the integrity of received
digital data.
CTS
Clear to Send. An EIA-lead standard for V.24 circuit CT 106; an output signal
(DCE-to-DTE).
CV
Code Violation. Detected when using HDB3 coding format, this is equivalent to a BPV
when using AMI coding.
DCE
Data Communications Equipment. The equipment that provides the functions required to
establish, maintain, and end a connection. It also provides the signal conversion required
for communication between the DTE and the network.
DSR
Data Set Ready. A signal from the modem to the DTE that indicates the modem is turned
ON and connected to the DTE.
DSX-1
Digital Signal Cross Connect level 1. An interconnection point for terminals, multiplexers
and transmission facilities.
DTE
Data Terminal Equipment. The equipment, such as a computer or terminal, that provides
data in the form of digital signals for transmission.
DTR
Data Terminal Ready. A signal from the DTE to the modem, sent via Pin 20 of the
EIA-232 interface (V.24 circuit 108/1, /2), that indicates the DTE is turned ON and
connected to the modem.
7900-A2-GB20-00
March 1998
GL-1
Glossary
E1
A wideband digital interface operating at 2.048 Mbps, defined by ITU recommendations
G.703 and G.704. It is used primarily outside North America.
ETSI
European Telecommunications Standardization Institute. An organization that produces
technical standards in the area of telecommunications.
FAS
Frame Alignment Signal. A loss of signal (LOS) error detection.
FAW
Frame Alignment Word. A loss of synchronization error detection.
FCC
Federal Communications Commission. The Board of Commissioners that regulates all
electrical communications that originate in the United States.
FEBE
Far-End Block Error. Block errors reported by remote equipment.
G.703
An ITU recommendation for the physical and logical characteristics of hierarchical digital
devices.
HDB3
High Density Bipolar Three Zeros Substitution. A line coding technique used to
accommodate the ones density requirements of E1 lines.
HDSL
High-bit-rate Digital Subscriber Line. A technique for high bandwidth, bidirectional
transmission over copper wire for T1 and E1 services.
HTU
Host Termination Unit. A generic reference to either an HTU-C or HTU-R module.
HTU-C
Host Termination Unit – Central. The module at the CO (central office) or central site end
of an HDSL connection. Also known as a Line Termination Unit (LTU).
HTU-M
Host Termination Unit – Maintenance. A carrier-mounted module used to perform
maintenance operations on one or more HTU-R and HTU-C modules.
HTU-R
Host Termination Unit – Remote. The module at the CP (customer premises) end of an
HDSL connection. Also known as a Network Termination Unit (NTU).
HTU-S
Host Termination Unit – SNMP. The SNMP-compatible version of the Maintenance
Processor.
LED
Light Emitting Diode. A light or status indicator that glows in response to the presence of a
certain condition (e.g., an alarm).
loopback
A diagnostic procedure that sends a test message back to its origination point. Used to
test various portions of a data link in order to isolate an equipment or data line problem.
OOF
Out Of Frame. An error condition in which frame synchronization bits are in error.
reset
A reinitialization of the device that occurs at power-up or in response to a reset command.
RTS
Request to Send. A signal from the DTE to the device, indicating that the DTE has data to
send. V.24 circuit 105.
RXD
Received Data. Pin 3 of the EIA-232 interface that is used by the DTE to receive data from
the modem. Conversely, the modem uses Pin 3 to transmit data to the DTE.
GL-2
March 1998
7900-A2-GB20-00
Glossary
SDSL
Symmetrical Digital Subscriber Line. A technique for the use of an existing twisted pair line
that permits high bandwidth, bidirectional transmission.
STU
SDSL Termination Unit. A generic reference to either an STU-C or STU-R module.
STU-C
SDSL Termination Unit – Central. The module at the CO (central office) or central site end
of an HDSL connection. Also known as a Line Termination Unit (LTU).
STU-R
SDSL Termination Unit – Remote. The module at the CP (customer premises) end of an
HDSL connection. Also known as a Network Termination Unit (NTU).
STU-S
SDSL Termination Unit – SNMP. The SNMP-compatible version of the Maintenance
Processor.
TXD
Transmit Data. Pin 2 of the EIA-232 interface that is used by the DTE to transmit data to
the modem. Conversely, the modem uses Pin 2 to receive data from the DTE.
T1
A term for a digital carrier facility used to transmit a DS1 formatted digital signal at
1.544 Mbps. It is used primarily in North America.
V.35
An ITU-T standard for a high-speed, 34-position, DCE/DTE interface.
7900-A2-GB20-00
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GL-3
Glossary
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GL-4
March 1998
7900-A2-GB20-00
Index
A
L
Abnormal Alarms, 8-7
Clearing Abnormal Alarms, 8-7
Accessing the system for the first time, 3-1
Alarm Definitions, 8-6
Abnormal Alarms, 8-7
Major Alarms, 8-6
Alarms, 8-1
Alarm On/Off Options, 8-3
Display Alarm Option Procedures, 8-3
MTU-M Alarm Functions, 8-2
linkUp and linkDown traps, C-2
local loopback test, 9-6
loopback tests, 9-1
Accessing, 9-2
Ending a loopback , 9-3
HDSL E1 Loopback, 9-6
HDSL T1 Loopback, 9-4
Local Loopback, 9-3
Remote Loopback, 9-3
SDSL E1 Loopback, 9-8
SDSL T1 Loopback, 9-10
Understanding Loopback Tests, 9-1
C
Cable Pin Assignments, A-1
Terminal, A-1
Cabling procedures, expansion nest cables, 2-3
Change Password, 6-8
COM port settings, 4-2
customer service, A
M
E
Major Alarms, 8-6
Clearing Major Alarms, 8-7
model numbers, 1-1
MTU-M Alarms, 8-1
Alarm Definitions, 8-6
Alarm On/Off Options, 8-3
MTU-M features, 1-3
MTU-M Frone Panel, Front panel LEDs, 7-1
MTU-M Front Panel, 7-1
Multiple Nest Numbering Sequence, 2-4
ESD precautions, 2-1
expansion nest numbering sequence, 2-4
N
I
Nest Numbering Sequence, 2-4
Netconfig Menu Values, B-1
D
Display Alarm Option, 8-3
Initial setup instructions, 3-1
Additional Sysconfig Setup Considerations, 3-4
Network Configuration (Netconfig) Parameters, 3-2
System Configuration (Sysconfig) Parameters, 3-3
Installation Procedures, 2-1
Additional Nests, 2-3
External alarms, 2-4
MTU-M, 2-1
primary to expansion nests, 2-3
7900-A2-GB20-00
O
Overview, 1-1
P
PC requirements, 4-2
March 1998
IN-1
Index
R
T
related documents, vi
remote loopback test, 9-5, 9-7, 9-9, 9-11
Resetting the MTU-M, 8-8
Resetting the xTU-C/R, 8-8
system terminal interface, 4-1
testing, 9-1
traps, SNMP, C-1
U
S
service information, A
Setup Instructions, 3-1
SNMP
linkUp and linkDown, C-2
traps, C-1
warmStart, C-1
Sysconfig Menu Values, B-1
IN-2
User interfaces, 1-3
W
warmStart, C-1
warranty telephone number, A
March 1998
7900-A2-GB20-00