7900-A2-GN20

AREA CODE CHANGE
Please note that the area code for
Paradyne Corporation in Largo, Florida
has changed from 813 to 727.
For any Paradyne telephone number that
appears in this manual with an 813 area
code, dial 727 instead.
HOTWIRE
MODEL 7900 NEST
AND OPTIONS
INSTALLATION GUIDE
Document No. 7900-A2-GN20-20
April 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 Avenue North, P.O. Box 2826, Largo,
Florida 33779-2826.
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:
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 1-813-530-2340
Printed on recycled paper
A
April 1998
7900-A2-GN20-20
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. This product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is
a safety feature. Equipment grounding is vital to ensure safe operation. Do not defeat the purpose of the
grounding type plug by modifying the plug or using an adapter.
Prior to installation, use an outlet tester or a voltmeter to check the ac receptacle for the presence of earth
ground. If the receptacle is not properly grounded, the installation must not continue until a qualified electrician
has corrected the problem.
If a 3-wire grounding type power source is not available, consult a qualified electrician to determine another
method of grounding the equipment.
The dc configuration of this product is to be grounded by connecting an external wire between the building ground
and the equipment ground screw on the rear of the power supply assembly. Consult a qualified electrician to
ensure that the ground connections are connected.
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 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.
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 un-insulated 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-GN20-20
April 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.
! WARNING:
Front Panel Fillers are required to be installed for EMI safety purposes. Install nest filler panels to cover
all nest card slots that do not contain nest cards.
! 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.
CE Mark
When the product is marked with the CE mark, this mark has been affixed to demonstrate full compliance with the
following European Directives:
H
Directive 73/23/EEC – Council Directive of 19 February 1973 on the harmonisation of the laws of the Member
States relating to electrical equipment designed for use within certain voltage limits, as amended by Directive
93/68/EEC.
H
Directive 89/336/EEC – Council Directive of 3 May 1989 on the approximation of the laws of the Member States
relating to Electro-Magnetic Compatibility (EMC), as amended by Directive 93/68/EEC.
C
April 1998
7900-A2-GN20-20
Contents
About This Guide
H Document Purpose and Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . iii
H Document Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
H Product-Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
1
About the Hotwire Model 7900 Nest
H Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
H Available Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Preparing for Installation
H Prepare the Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
H Inspect the Shipping Container . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
H Remove and Inspect the Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
H Order of Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
H Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3
Installing the Hotwire Model 7900 Nest and Options
H Installing the Nest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
H Hotwire Model 7900 Nest Rear Panel Connectors . . . . . . . . . . . . . . . . . . . 3-3
H Installing the Heat Deflector Module (Multiple Adjacent Nest
Installations Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
H Cabling Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Connecting the Nest to the T1 or E1 Network . . . . . . . . . . . . . . . . . . . 3-5
Connecting the Nest to the DSL Local Loop . . . . . . . . . . . . . . . . . . . . . 3-7
H Connecting the Nest to Existing – 48 Vdc Power . . . . . . . . . . . . . . . . . . . . . 3-8
H Installing a– 48 Vdc Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
H Applying Power to the Nest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
H Installing Nest Card Termination Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
7900-A2-GN20-20
April 1998
i
Contents
A
Cables, Connectors, and Pin Assignments
H T1/E1 Network Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
H HDSL Local Loop Cable Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3
H SDSL Local Loop Cable Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6
Glossary
Index
ii
April 1998
7900-A2-GN20-20
About This Guide
Document Purpose and Intended Audience
This guide contains information needed to set up, configure, and install the
Hotwire Model 7900 16-Slot Nest.
It is expected that readers of this document are central-site technicians, special
service installation technicians, or network engineers who have an understanding
of digital subscriber line systems and Digital Subscriber Loop (DSL) transmission
systems.
Document Summary
7900-A2-GN20-20
Section
Description
Chapter 1
About the Hotwire Model 7900 Nest. Describes the features
of the Hotwire Model 7900 Nest and shows typical
configurations.
Chapter 2
Preparing for Installation. Describes the procedures taken
prior to installing the nest.
Chapter 3
Installing the Hotwire Model 7900 Nest and Options.
Provides instructions for installing the nest, heat deflector
module, power supply, nest cards, and nest filler panels.
This chapter also contains procedures for connecting
network and nest cables.
Appendix A
Cables, Connectors, and Pin Assignments. Contains
connector pin assignment details.
Glossary
Defines the acronyms and terms used in this document.
Index
Lists the key terms, acronyms, and concepts, in alphabetical
order.
April 1998
iii
About This Guide
Product-Related Documents
Document Number
Document Title
7900-A2-GB20
Hotwire Model 7900 Basic Maintenance Processor
User’s Guide
7910-A2-GB20
Hotwire Models 7914 and 7915 T1 and E1 SDSL
Nest Card Termination Units 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 HSDL
Termination Unit User’s Guide
7925-A2-GB20
Hotwire Model 7925 Standalone E1 HSDL
Termination Unit 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
iv
April 1998
7900-A2-GN20-20
About the Hotwire Model 7900
Nest
1
Overview
The Hotwiret Model 7900 Nest is designed for use in both commercial and
central-site environments. The nest is a 19-inch wide rack that houses up to
16 nest card termination units. The number of nest cards in a nest depends on
the type of configuration you choose.
The Hotwire Model 7900 Nest:
H
Mounts into a standard 19-inch equipment rack and can be adapted to mount
into a 23-inch equipment rack
H
Provides dual connections (redundant) – 48 Vdc power
H
Provides connections for T1 or E1 network and DSL local loop cables
H
Provides connections to link up to three expansion nests to a primary nest
with the maintenance processor option, MTU-M (SNMP compatible)
The optional MTU-M maintenance processors monitor status, store
performance history, and display individual circuit and loop status for up to
63 nest card termination units.
The MTU-M maintenance processor can interface with and report circuit
status to your Network Management System using Simple Network
Management Protocol (SNMP).
7900-A2-GN20-20
April 1998
1-1
About the Hotwire Model 7900 Nest
The following figure shows a fully loaded nest with the optional Hotwire
Model 7900 Basic Maintenance Processor (MTU-M) installed.
MTU-M
POWER
FAIL
NMS LINK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
ACO
ACTIVE
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
NETWORK
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
LOS/AIS/BER
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
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
Nest Card
Termination Units (xTU-C/R)
SDSL
LOS / BER
LOOP
SDSL
LOS / BER
LOOP
98-15632-01
Fully Populated Hotwire Model 7900 Nest
Available Options
The following options can be ordered separately:
- 7900-F1-300: HDSL Maintenance Processor (MTU-M)
- 7900-F1-500: HDSL primary-to-expansion nest cable (36 inches/91 cm)
- 7900-F1-501: HDSL primary-to-expansion nest cable (56 inches/142 cm)
- 7900-F1-502: HDSL primary-to-expansion nest cable (78 inches/198 cm)
- 7900-F1-804: 19-inch Heat Deflector Module (for multiple nest configurations)
- 7900-F1-805: 19-inch to 23-inch nest adapter
To order additional products, refer to Warranty, Sales, and Service Information on
page A at the beginning of this Installation Guide.
1-2
April 1998
7900-A2-GN20-20
Preparing for Installation
2
Prepare the Site
Before starting the installation, make sure you have:
- A clean, well-lit, and ventilated site that is free from environmental extremes.
- Sufficient clearance for cable connections.
- Contacted your network provider to coordinate installing the nest and its
associated cards.
Inspect the Shipping Container
Inspect the shipping container for signs of damage. Specific signs to check for
are:
H
Major tears or puncture holes on the sides of the container
H
Splits in the seams
H
Corner damage or any additional signs of the container having been dropped
If the shipping container shows signs of damage, report this immediately to your
shipping or service representative.
7900-A2-GN20-20
April 1998
2-1
Preparing for Installation
Remove and Inspect the Equipment
After unpacking your equipment, inspect the following units for damage:
H
Nest. Remove the nest from its shipping container and check for physical
damage.
H
Heat Deflector Module (Multiple adjacent expansion nests only). Remove
the module from its shipping container and check for physical damage.
Ensure the module grounding cable is firmly attached to the module.
H
Power supply (If optional power supply ordered). Ensure that the unit has
not been damaged, possibly causing a short circuit of internal components.
H
Nest Cards. Inspect each circuit card assembly for physical damage, bent
connector pins, or missing jumpers (refer to Hotwire Models 7924 and
7925 T1 and E1 HDSL Nest Card Termination Unit User’s Guide or Hotwire
Models 7914 and 7915 T1 and E1 SDSL Nest Card Termination User’s Guide
for the location of nest card jumpers).
Order of Installation
Install the nest and its associated components in the following order:
1. Install the Hotwire Model 7900 Nest in a standard equipment rack.
2. Install heat deflector module (for multiple adjacent expansion nest
configurations).
3. Connect network and local loop cables.
4. Connect nest cables (for multiple expansion nest configurations with the
maintenance processor option only).
5. Connect to existing – 48 Vdc or install a – 48 Vdc power supply.
6. Install nest card termination units.
Required Tools
Use the following tools to install the nest, heat deflector, power supply, nest
cards, and nest filler panels:
2-2
H
A large Phillips screwdriver to install the nest and heat deflector into the
standard equipment rack.
H
A small flat-blade screwdriver to install the power supply, tighten cable
connector retaining screws, and tighten nest card and filler panel retaining
screws.
April 1998
7900-A2-GN20-20
Installing the Hotwire Model 7900
Nest and Options
3
Installing the Nest
The Hotwire Model 7900 Nest fits into a standard 19-inch wide equipment rack.
See Figure 3-1.
Power
Supply
Heat
Deflectors
7900 Nests
97-15423-02
Figure 3-1. Standard Equipment Rack with Fully Populated Hotwire Model 7900
Nests, Heat Deflectors, and Power Supplies Installed
7900-A2-GN20-20
April 1998
3-1
Installing the Hotwire Model 7900 Nest and Options
NOTE:
A maximum of four Hotwire Model 7900 Nests can be installed into one
standard 72-inch equipment rack. When more than one nest is to be installed
in the same equipment rack, start with the highest desired position in the rack
and work downward. If you chose the maintenance processor option
(MTU-M), the maintenance processor assembly is placed in the top nest and
that nest is referred to as the primary nest.
" Procedure
To attach the Hotwire Model 7900 Nest to the front of the standard equipment
rack:
NOTE:
Speed nuts have been included to attach the nest to equipment racks that do
not have threaded screw holes. If your equipment rack does not have
threaded screw holes, position the nest in the cabinet to determine which
front rail holes are used and slip a speed nut onto each front rail hole.
1. At the desired height, support the nest against the front rail of the equipment
rack.
2. Align the nest’s mounting bracket holes with the screw holes in the front rails
of the equipment rack.
Front Rail
Mounting
Bracket
Speed
Nut
Machine
Screw
Grounding
Cable
Front of 19-inch Rack
97-15528
3. Attach the nest to the front rails of the equipment rack using four machine
screws.
4. Connect the nest grounding cable to the equipment rack using a machine
screw and lockwasher.
3-2
April 1998
7900-A2-GN20-20
Installing the Hotwire Model 7900 Nest and Options
5. Tighten all four screws until the nest is securely mounted in the equipment
rack.
6. If you are installing additional adjacent expansion nests:
— Install the heat deflector module directly below the top nest. See
Installing the Heat Deflector Module procedure on page 3-4. Refer to
Figure 3-1 for the location of the module.
— Repeat Steps 1–5 to install the next nest (to a maximum of four nests,
four power supplies, and three heat deflector modules) into the
equipment rack.
Hotwire Model 7900 Nest Rear Panel Connectors
P6
TO 4
-48 Vdc
Power
Terminal
P4
POWER J27
Bgnd
–48vB
Agnd
–48vA
P5
J21
J25
J23
J24
P5
P6
Alarms
TO 2
J28
RS232
Modem
TO 3
J29
FROM 1
10BaseT
J26
DB25
Network
Management
AUI
DB15
P7
Local Loop
P7
97-15671
The following table lists the nest rear panel connectors:
Location
Connector
Function
P4
– 48 Vdc screw terminal
Allows you to connect up to two – 48 Vdc power sources to the nest for
distribution to the nest cards.
P5, P6
64-pin Champ connector
Provides connection to the T1 or E1 network.
P7
64-pin Champ connector
Provides connection to the DSL network.
J26–J29
Nest expansion connectors
Allows you to connect the primary nest (nest with maintenance processor
option installed) to additional expansion nests.
J21
External alarm terminal
Allows you to connect external alarm circuits to the nest rear panel.
J23
10BaseT connector
Allows you to connect to a Network Management System using SNMP.
J24
DB15 connector
Allows you to connect to a Network Management System using SNMP.
J25
DB25 connector
Not supported.
7900-A2-GN20-20
April 1998
3-3
Installing the Hotwire Model 7900 Nest and Options
Installing the Heat Deflector Module (Multiple
Adjacent Nest Installations Only)
A heat deflector module is installed below the nest to prevent heat generated
from lower level nests and power supplies from rising to those above. Refer to
Figure 3-1 for the location of the heat deflector module in the equipment rack.
NOTE:
This procedure assumes a fully populated rack as shown in Figure 3-1
including four – 48 Vdc power supplies and four expansion nests. If your
configuration provides sufficient airflow between nests, you may not need to
install heat deflector modules.
" Procedure
To install the heat deflector module:
NOTE:
Speed nuts have been included to attach the heat deflector module to an
equipment rack that does not have threaded screw holes. If your equipment
rack does not have threaded screw holes, position the heat deflector in the
cabinet to determine which front rail holes are used and slip a speed nut onto
each rail hole.
1. Insert the heat deflector module directly below the highest nest in the
equipment rack.
2. Align the heat deflector module’s mounting bracket holes with the screw
holes in the front rails of the equipment rack.
Heat Deflector
Module
Grounding
Cable
3-4
April 1998
97-15412
7900-A2-GN20-20
Installing the Hotwire Model 7900 Nest and Options
3. Attach the module to the equipment rack using four machine screws.
4. Tighten all four screws until the heat deflector module is securely mounted to
the equipment rack.
5. Connect the heat deflector module grounding cable to the equipment rack
using a machine screw and a lockwasher.
6. Tighten the screw until the grounding cable is securely fastened to the rack.
Cabling Procedures
There are five types of cable connections associated with the Hotwire
Model 7900 Nest installation. These cable connections connect:
H
The nest to the T1 or E1 Network
H
The nest to the DSL local loop
H
The primary nest to additional expansion nests (refer to Hotwire Model 7900
Basic Maintenance Processor User’s Guide)
H
Major, minor, and abnormal alarms (refer to the Hotwire Model 7900 Basic
Maintenance Processor User’s Guide)
H
A VT100-compatible terminal or terminal emulator (refer to the Hotwire
Model 7900 Basic Maintenance Processor User’s Guide)
Connecting the Nest to the T1 or E1 Network
A single network cable can connect up to eight nest cards to a T1 or E1 network.
" Procedure
To connect the nest to the T1 or E1 network:
1. Connect the 64-pin E1/T1 network cable Champ connector(s) to P5 or P6 on
the nest rear panel.
— If your nest will contain eight nest cards or fewer, connect the 64-pin
Champ connector of the network cable to P5 on the nest rear panel.
— If your nest will contain nine nest cards or more, connect the 64-pin
Champ connector of one network cable to P5 and connect second
network cable to P6.
7900-A2-GN20-20
April 1998
3-5
Installing the Hotwire Model 7900 Nest and Options
2. Tighten the Champ connector retaining screw.
P6
TO 4
POWER J27
Bgnd
–48vB
Agnd
–48vA
64 Pin Champ Connector
P5
P6
P5
Alarms
TO 2
J28
RS232
Modem
TO 3
J29
FROM 1
10BaseT
J26
DB25
Network
Management
AUI
DB15
P7
Local Loop
P7
To E1/T1 Network
(50-Pin Connector)
97-15413
3. Connect the other end of the cable to the T1 or E1 network.
You can connect to the T1 or E1 network by:
— Using the 64-pin to 50-pin connector cable supplied with the nest.
— Removing the 50-pin connector and wiring to a standard punchdown
block (refer to Appendix A, Cables, Connectors, and Pin Assignments, for
cable pin assignments).
— Connecting the 50-pin connector to a 356A Type Modular RJ48
connector (Comcode 104 158 829). The 356A Modular RJ48 connector
converts the 50-pin connector to eight RJ48 connector sockets. Each
socket corresponds to one nest card termination unit.
3-6
April 1998
7900-A2-GN20-20
Installing the Hotwire Model 7900 Nest and Options
Connecting the Nest to the DSL Local Loop
The DSL local loop cable allows you to connect up to 16 nest card termination
units to the DSL local loop.
" Procedure
To connect the nest to the DSL local loop:
1. Connect the 64-pin DSL local loop cable Champ connector to P7.
2. Tighten the cable connector retaining screw.
TO 4
POWER J27
Bgnd
–48vB
Agnd
–48vA
P5
P6
Alarms
TO 2
J28
RS232
Modem
TO 3
J29
FROM 1
J26
10BaseT
DB25
Network
Management
AUI
DB15
To DSL Local
Loop (50-Pin
J1 slots 1-8)
P7
P7
64 Pin Champ Connector
To DSL Local
Loop (50-Pin
J2 Slots 9-16)
97-15415
3. Connect the other end of the cable to your DSL local loop.
You can connect to the DSL local loop by:
— Using the 64-pin to two 50-pin connector cable supplied with the nest.
— Removing the 50-pin connectors and wiring to a standard punchdown
block (refer to Appendix A, Cables, Connectors, and Pin Assignments, for
cable pin assignments).
— Connecting the 50-pin connector to a 356A Type Modular RJ48
connector (Comcode 104 158 829). The 356A Modular RJ48 connector
converts the 50-pin connector to eight RJ48 connector sockets. Each
socket corresponds to one nest card termination unit.
7900-A2-GN20-20
April 1998
3-7
Installing the Hotwire Model 7900 Nest and Options
Connecting the Nest to Existing – 48 Vdc Power
" Procedure
If – 48 Vdc is available at your site:
1. Verify power is turned off at the circuit breaker or source.
2. Connect the – 48 Vdc return line to the Agnd screw terminal on the nest rear
panel.
3. Connect the – 48 Vdc line to the – 48vA screw terminal on the nest rear panel.
Redundant – 48 Vdc power can be connected to the Bgnd and – 48vB screw
terminals.
POWER
TO 4
POWER
Bgnd
–48vB
Agnd
–48vA
P6
Bgnd
P5
J27
Alarms
TO 2
J28
RS232
Modem
TO 3
J29
FROM 1
J26
10BaseT
DB25
Network
Management
AUI
DB15
–48vB
Agnd
–48vA
P7
97-15422
Local Loop
If – 48 Vdc is not available at your site, see Installing a –48 Vdc Power Supply.
Installing a–48 Vdc Power Supply
If – 48 Vdc is not available at your site you can connect a –48 Vdc power supply.
" Procedure
To connect a –48 Vdc power supply as follows:
1. Refer to Figure 3-1 for the recommended location of the – 48 Vdc power
supply within the rack.
2. Connect the – 48 Vdc return line to the Agnd screw terminal on the nest rear
panel.
3. Connect the – 48 Vdc line to the – 48vA screw terminal on the nest rear panel.
3-8
April 1998
7900-A2-GN20-20
Installing the Hotwire Model 7900 Nest and Options
POWER
TO 4
POWER
Bgnd
–48vB
Agnd
–48vA
P6
Bgnd
P5
J27
Alarms
TO 2
J28
RS232
Modem
TO 3
J29
FROM 1
J26
10BaseT
DB25
Network
Management
AUI
DB15
–48vB
Agnd
–48vA
P7
97-15422
Local Loop
Refer to Applying Power to the Nest prior to applying power to the nest.
Applying Power to the Nest
If – 48 Vdc is available at your site, apply power to the nest by turning on the
circuit breaker or – 48 Vdc source.
CAUTION:
The power supply power cord contains a 3-wire grounding-type plug
which has a grounding pin. This is a safety feature. Grounding of the
nest is vital to ensure safe operation. Do not defeat the purpose of the
grounding plug by modifying it or by using a plug adapter.
If – 48 Vdc is not available at your site, plug the – 48 Vdc power supply 3-pronged
plug into an ac outlet.
Installing Nest Card Termination Units
Use this procedure to install Hotwire 7900 Nest Card Termination Units.
Installation of the optional Hotwire 7900 Maintenance Processor (MTU-M) is
described in a separate user’s guide. Refer to Product-Related Documents in
About This Guide. Refer to the appropriate nest card user’s guide to configure
nest card termination units.
" Procedure
To install the nest card:
1. Use electrostatic discharge (ESD) protection when handling the electronic
components. Remove the card from any protective packaging.
7900-A2-GN20-20
April 1998
3-9
Installing the Hotwire Model 7900 Nest and Options
Maintenance Processor Option
(MTU-M) Slot 1
MTU-M
POWER
FAIL
NMS LINK
MODEMS
ALARMS
MAJOR
MINOR
ABNML
ACO
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
NETWORK
LOS/AIS/BER
LOCAL
REMOTE
REMOTE
LOOP BK
LOCAL
REMOTE
REMOTE
LOOP BK
LOCAL
REMOTE
REMOTE
LOOP BK
LOCAL
REMOTE
REMOTE
LOOP BK
LOCAL
REMOTE
REMOTE
LOOP BK
SYSTEM
SYSTEM
SYSTEM
SYSTEM
SYSTEM
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
PWR
FAIL
NETWORK
LOS/AIS/BER
LOCAL
REMOTE
REMOTE
LOOP BK
ACTIVE
RESET
C
O
N
S
O
L
E
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
SYSTEM
PWR
FAIL
HDSL
LOS / BER
LOOP 1
LOOP 2
97-15707
2. Align the circuit board with the top and bottom card guides of the next
available card slot.
— Slot 1 if no maintenance processor option is installed
— Slot 2 if an MTU-M is installed in Slot 1
3. Slide the nest card into the slot until the connector plug is seated firmly into
the backplane.
4. Tighten retaining screws at the top and bottom of the nest card front panel.
97-15774
3-10
April 1998
7900-A2-GN20-20
Cables, Connectors, and Pin
Assignments
A
To order any of the following cables, refer to Warranty, Sales, and Service
Information on page A. Refer to Chapter 3, Installing the Hotwire 7900 Nest and
Options, for information on connecting these cables.
T1/E1 Network Cable
Slots 1–8 or 9–16 Digital T1/E1 Connector (P5 or P6)
64-pin to 50-Pin Connector Conversion (1 of 3)
7900-A2-GN20-20
Card Cage
Slot
64-pin (P5 or
P6) Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Pin Number
Slot 1, 9
26
27
2
Tx to E1 or T1
Network – Tip
Slot 1, 9
25
2
1
Tx to E1 or T1
Network – Ring
Slot 1, 9
30
26
5
Rx from E1 or T1
Network – Tip
Slot 1, 9
29
1
4
Rx from E1 or T1
Network – Ring
Slot 2, 10
18
30
2
Tx to E1 or T1
Network – Tip
Slot 2, 10
17
5
1
Tx to E1 or T1
Network – Ring
Slot 2, 10
22
29
5
Rx from E1 or T1
Network – Tip
Slot 2, 10
21
4
4
Rx from E1 or T1
Network – Ring
April 1998
Function
A-1
Cables, Connectors, and Pin Assignments
Slots 1–8 or 9–16 Digital T1/E1 Connector (P5 or P6)
64-pin to 50-Pin Connector Conversion (2 of 3)
A-2
Card Cage
Slot
64-pin (P5 or
P6) Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Pin Number
Slot 3, 11
10
33
2
Tx to E1 or T1
Network – Tip
Slot 3, 11
9
8
1
Tx to E1 or T1
Network – Ring
Slot 3, 11
14
32
5
Rx from E1 or T1
Network – Tip
Slot 3, 11
13
7
4
Rx from E1 or T1
Network – Ring
Slot 4, 12
1
36
2
Tx to E1 or T1
Network – Tip
Slot 4, 12
2
11
1
Tx to E1 or T1
Network – Ring
Slot 4, 12
6
35
5
Rx from E1 or T1
Network – Tip
Slot 4, 12
5
10
4
Rx from E1 or T1
Network – Ring
Slot 5, 13
39
39
2
Tx to E1 or T1
Network – Tip
Slot 5, 13
40
14
1
Tx to E1 or T1
Network – Ring
Slot 5, 13
35
38
5
Rx from E1 or T1
Network – Tip
Slot 5, 13
36
13
4
Rx from E1 or T1
Network – Ring
Slot 6, 14
47
42
2
Tx to E1 or T1
Network – Tip
Slot 6, 14
48
17
1
Tx to E1 or T1
Network – Ring
Slot 6, 14
43
41
5
Rx from E1 or T1
Network – Tip
Slot 6, 14
44
16
4
Rx from E1 or T1
Network – Ring
Slot 7, 15
55
45
2
Tx to E1 or T1
Network – Tip
Slot 7, 15
56
20
1
Tx to E1 or T1
Network – Ring
April 1998
Function
7900-A2-GN20-20
Cables, Connectors, and Pin Assignments
Slots 1–8 or 9–16 Digital T1/E1 Connector (P5 or P6)
64-pin to 50-Pin Connector Conversion (3 of 3)
Card Cage
Slot
64-pin (P5 or
P6) Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Pin Number
Slot 7, 15
51
44
5
Rx from E1 or T1
Network – Tip
Slot 7, 15
52
19
4
Rx from E1 or T1
Network – Ring
Slot 8, 16
63
48
2
Tx to E1 or T1
Network – Tip
Slot 8, 16
64
23
1
Tx to E1 or T1
Network – Ring
Slot 8, 16
59
47
5
Rx from E1 or T1
Network – Tip
Slot 8, 16
60
22
4
Rx from E1 or T1
Network – Ring
Function
HDSL Local Loop Cable Pinouts
Slot 1–16 Analog Connector (P7) 64-Pin to
two 50-Pin Connector Conversion (1 of 3)
7900-A2-GN20-20
Card Cage
Slot
64-pin (P7)
Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Function
Pin Number
Slot 1
48
J1-27
1
Loop A – Tip
Slot 1
47
J1-2
2
Loop A – Ring
Slot 1
46
J1-28
3
Loop B – Tip
Slot 1
45
J1-1
4
Loop B – Ring
Slot 2
44
J1-30
1
Loop A – Tip
Slot 2
43
J1-5
2
Loop A – Ring
Slot 2
42
J1-31
3
Loop B – Tip
Slot 2
41
J1-4
4
Loop B – Ring
Slot 3
40
J1-33
1
Loop A – Tip
Slot 3
39
J1-8
2
Loop A – Ring
April 1998
A-3
Cables, Connectors, and Pin Assignments
Slot 1–16 Analog Connector (P7) 64-Pin to
two 50-Pin Connector Conversion (2 of 3)
A-4
Card Cage
Slot
64-pin (P7)
Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Function
Pin Number
Slot 3
38
J1-34
3
Loop B – Tip
Slot 3
37
J1-7
4
Loop B – Ring
Slot 4
36
J1-36
1
Loop A – Tip
Slot 4
35
J1-11
2
Loop A – Ring
Slot 4
34
J1-37
3
Loop B – Tip
Slot 4
33
J1-10
4
Loop B – Ring
Slot 5
1
J1-39
1
Loop A – Tip
Slot 5
2
J1-14
2
Loop A – Ring
Slot 5
3
J1-40
3
Loop B – Tip
Slot 5
4
J1-13
4
Loop B – Ring
Slot 6
5
J1-42
1
Loop A – Tip
Slot 6
6
J1-17
2
Loop A – Ring
Slot 6
7
J1-43
3
Loop B – Tip
Slot 6
8
J1-16
4
Loop B – Ring
Slot 7
9
J145
1
Loop A – Tip
Slot 7
10
J1-20
2
Loop A – Ring
Slot 7
11
J1-46
3
Loop B – Tip
Slot 7
12
J1-19
4
Loop B – Ring
Slot 8
13
J1-48
1
Loop A – Tip
Slot 8
14
J1-23
2
Loop A – Ring
Slot 8
15
J1-49
3
Loop B – Tip
Slot 8
16
J1-22
4
Loop B – Ring
Slot 9
17
J2-27
1
Loop A – Tip
Slot 9
18
J2-2
2
Loop A – Ring
Slot 9
19
J2-28
3
Loop B – Tip
Slot 9
20
J2-1
4
Loop B – Ring
Slot 10
21
J2-30
1
Loop A – Tip
Slot 10
22
J2-5
2
Loop A – Ring
April 1998
7900-A2-GN20-20
Cables, Connectors, and Pin Assignments
Slot 1–16 Analog Connector (P7) 64-Pin to
two 50-Pin Connector Conversion (3 of 3)
7900-A2-GN20-20
Card Cage
Slot
64-pin (P7)
Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Function
Pin Number
Slot 10
23
J2-31
3
Loop B – Tip
Slot 10
24
J2-4
4
Loop B – Ring
Slot 11
25
J2-33
1
Loop A – Tip
Slot 11
26
J2-8
2
Loop A – Ring
Slot 11
27
J2-34
3
Loop B – Tip
Slot 11
28
J2-7
4
Loop B – Ring
Slot 12
29
J2-36
1
Loop A – Tip
Slot 12
30
J2-11
2
Loop A – Ring
Slot 12
31
J2-37
3
Loop B – Tip
Slot 12
32
J2-10
4
Loop B – Ring
Slot 13
52
J2-39
1
Loop A – Tip
Slot 13
51
J2-14
2
Loop A – Ring
Slot 13
50
J2-40
3
Loop B – Tip
Slot 13
49
J2-13
4
Loop B – Ring
Slot 14
56
J2-42
1
Loop A – Tip
Slot 14
55
J2-17
2
Loop A – Ring
Slot 14
54
J2-43
3
Loop B – Tip
Slot 14
53
J2-16
4
Loop B – Ring
Slot 15
60
J2-45
1
Loop A – Tip
Slot 15
59
J2-20
2
Loop A – Ring
Slot 15
58
J2-46
3
Loop B – Tip
Slot 15
57
J2-19
4
Loop B – Ring
Slot 16
64
J2-48
1
Loop A – Tip
Slot 16
63
J2-23
2
Loop A – Ring
Slot 16
62
J2-49
3
Loop B – Tip
Slot 16
61
J2-22
4
Loop B – Ring
April 1998
A-5
Cables, Connectors, and Pin Assignments
SDSL Local Loop Cable Pinouts
Slot 1–16 Analog Connector (P7) 64-Pin to
two 50-Pin Connector Conversion (1 of 2)
A-6
Card Cage
Slot
64-pin (P7)
Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Function
Pin Number
Slot 1
48
J1-27
1
Loop – Tip
Slot 1
47
J1-2
2
Loop – Ring
Slot 2
44
J1-30
1
Loop – Tip
Slot 2
43
J1-5
2
Loop – Ring
Slot 3
40
J1-33
1
Loop – Tip
Slot 3
39
J1-8
2
Loop – Ring
Slot 4
36
J1-36
1
Loop – Tip
Slot 4
35
J1-11
2
Loop – Ring
Slot 5
1
J1-39
1
Loop – Tip
Slot 5
2
J1-14
2
Loop – Ring
Slot 6
5
J1-42
1
Loop – Tip
Slot 6
6
J1-17
2
Loop – Ring
Slot 7
9
J1-45
1
Loop – Tip
Slot 7
10
J1-20
2
Loop – Ring
Slot 8
13
J1-48
1
Loop – Tip
Slot 8
14
J1-23
2
Loop – Ring
Slot 9
17
J2-27
1
Loop – Tip
Slot 9
18
J2-2
2
Loop – Ring
Slot 10
21
J2-30
1
Loop – Tip
Slot 10
22
J2-5
2
Loop – Ring
Slot 11
25
J2-33
1
Loop – Tip
Slot 11
26
J2-8
2
Loop – Ring
Slot 12
29
J2-36
1
Loop – Tip
Slot 12
30
J2-11
2
Loop – Ring
Slot 13
49
J2-39
1
Loop – Tip
Slot 13
50
J2-14
2
Loop – Ring
April 1998
7900-A2-GN20-20
Cables, Connectors, and Pin Assignments
Slot 1–16 Analog Connector (P7) 64-Pin to
two 50-Pin Connector Conversion (2 of 2)
7900-A2-GN20-20
Card Cage
Slot
64-pin (P7)
Connector
Pin Number
50-pin
Connector
Pin Number
356-Type
Modular RJ48
Adapter
Function
Pin Number
Slot 14
53
J2-42
1
Loop – Tip
Slot 14
54
J2-17
2
Loop – Ring
Slot 15
57
J2-45
1
Loop – Tip
Slot 15
58
J2-20
2
Loop – Ring
Slot 16
61
J2-48
1
Loop – Tip
Slot 16
62
J2-23
2
Loop – Ring
April 1998
A-7
Cables, Connectors, and Pin Assignments
This page intentionally left blank.
A-8
April 1998
7900-A2-GN20-20
Glossary
Champ connector
64-pin connector used to connect the E1/T1 network or local loop to the Hotwire
Model 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.
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.
factory defaults
A predetermined set of configuration options containing the optimum settings for operation
on asynchronous dial networks.
FCC
Federal Communications Commission. The Board of Commissioners that regulates all
electrical communications that originate in the United States.
G.703
An ITU recommendation for the physical and logical characteristics of hierarchical digital
devices.
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.
SDSL
Symmetrical Digital Subscriber Line. A technique for the use of an existing twisted pair line
that permits high bandwidth, bidirectional transmission.
SNMP
Simple Network Management Protocol. Protocol for open networking management.
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 Network Termination Unit (NTU).
7900-A2-GN20-20
April 1998
GL-1
Glossary
STU-R
SDSL Termination Unit – Remote. The module at the CP (customer premises) end of an
HDSL connection. Also known as a Line Termination Unit (LTU).
STU-S
SDSL Termination Unit – SNMP. The SNMP-compatible version of the Maintenance
Processor.
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.
GL-2
April 1998
7900-A2-GN20-20
Index
A
O
About This Guide, iii
Document Purpose, iii
Document Summary, iii
Options, 1-2
Order of Installation, 2-2
Overview, 1-1
C
Power , 3-8
Applying Power, 3-9
P
Cable pin assignments, A-1
HDSL Local Loop Cable, A-3
SDSL Local Loop Cable, A-6
T1/E1 Network, A-1
Cabling Procedures, 3-5
DSL Local Loop cable, 3-7
T1 or E1 Network, 3-5
Connect the Nest to –48 Vdc Power, 3-8
Connect the Nest to –48 Vdc Power, Connecting to
existing –48 Vdc Power, 3-8
Connectors, rear panel, 3-3
R
rear panel connectors, 3-3
Related Documents, iv
Required Tools, 2-2
S
Safety Instructions, B
Sales information, A
Service Information, A
E
W
EMI Warnings, C
Warranty, A
I
Installation Procedures
–48 Vdc Power supply, 3-8
DSL Local Loop, 3-7
E1/T1 Network Cables, 3-5
Inspect equipment for damage, 2-2
Equipment location within the nest, 3-1
Heat Deflector module, 3-4
Nest card termination units, 3-9
Preparing for Installation, 2-1
Required tools, 2-2
Installation procedures, HotWire Model 7900 Nest, 3-1
7900-A2-GN20-20
April 1998
IN-1