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HOTWIRE
MODEL 7914 STANDALONE
T1 SDSL TERMINATION UNIT
USER’S GUIDE
Document No. 7914-A2-GB20-00
February 1998
Page 2
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 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:
Via the Internet: Visit the Paradyne World Wide W eb 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
February 1998
7914-A2-GB20-00
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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. Do not allow anything to rest on the power cord and do not locate the product where persons will walk on the
power cord.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. Input power to the 24 Vdc and –48 Vdc voltage configurations of this product must be provided by one of the
following: (1) a National Electrical Code (NEC)/Canadian Electrical Code (CEC) Class 2 circuit for use in North
America, or (2) a Safety Extra Low Voltage (SELV)/Limited Power Source (LPS) input certified for use in the
country of installation.
7914-A2-GB20-00 February 1998
B
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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:
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
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Contents
About This Guide
Document Purpose and Intended Audience v. . . . . . . . . . . . . . . . . . . . . . . . .
Document Summary v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Product-Related Documents vi. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 About Hotwire Model 7914 Termination Units
Hotwire 7914-A1 Models and Features 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Configurations 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
User Interface Types 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Installing the Unit
Overview 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Checklist for Hotwire Model 7914-A1 2-1. . . . . . . . . . . . . . . . . . . . . .
Planning for Your SDSL Application 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to the Network 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Power to the Unit 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Using Terminal and Switchpack Modes
Choosing a Configuration Mode 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to a System Terminal 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switching Between Terminal and Switchpack Modes 3-2. . . . . . . . . . . . . . . . .
4 Customizing DSX-1-Compatible Units
Accessing Configuration Options 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making Changes from the Terminal Interface 4-2. . . . . . . . . . . . . . . . . . . . . . .
Making Changes in Switchpack Mode 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Framed or Unframed Operation
(DSX-1-to-DSX-1 Configuration) 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring a Starting Time Slot (DSX-1-to-V.35/V.11 Configuration) 4-5
Displaying Switchpack Definitions 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Line Build-Out Definitions 4-6. . . . . . . . . . . . . . . . . . . . . . . . . . .
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Contents
5 Customizing V.35/V.11-Compatible Units
Accessing Configuration Options 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Making Changes from the Terminal Interface 5-2. . . . . . . . . . . . . . . . . . . . . . .
Making Changes in Switchpack Mode 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selecting V.35 or V.11 Signaling 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displaying Switchpack Definitions 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Monitoring the Unit
What to Monitor 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Board Status 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance Statistics 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Unit Information 6-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Panel LEDs 6-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 T esting
A W orksheets
Detecting a Problem 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Understanding Loopback Tests 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Local Loopbacks 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Loopbacks 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting and Ending Loopbacks 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Resetting the Unit 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSX-1-to-DSX-1 Configuration A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSX-1-to-V.35/V.11 Configuration A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.35/V .11-to-V.35/V.11 Configuration A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSX-1-Compatible Units Configuration Worksheet A-4. . . . . . . . . . . . . . . . . .
V.35/V .11-Compatible Units Configuration Worksheet A-4. . . . . . . . . . . . . . . .
ii
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7914-A2-GB20-00
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B Cable Pin Assignments
Terminal Connection Cable B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SDSL Connection Cable Pin Assignments B-2. . . . . . . . . . . . . . . . . . . . . . . . . .
T1 Network Connection Cable Pin Assignments B-3. . . . . . . . . . . . . . . . . . . . .
V.35/V .11 Connection Cable Pin Assignments B-4. . . . . . . . . . . . . . . . . . . . . . .
DB25-to-V.35 Adapter Cable Pin Assignments B-5. . . . . . . . . . . . . . . . . . . . . .
C Switchpack Definitions
DSX-1-Compatible Units C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V.35/V .11-Compatible Units C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary
Contents
Index
7914-A2-GB20-00
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iii
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About This Guide
Document Purpose and Intended Audience
This guide contains information needed to set up, configure, and operate Hotwire
Model 7914 T1 SDSL Termination Units. It is designed for central office
installation technicians and network engineers who have an understanding of the
deployment of Symmetric Digital Subscriber Loop (SDSL) transmission systems
in a telephone company or private network environment.
The Hotwire 7914 may be ordered either as a standalone unit (7914-A1-xxx) or
as a nest-mounted card (7914-B1-xxx) that fits in a Hotwire 7900 nest. This guide
describes the installation and maintenance procedures for the standalone
version, Model 7914-A1-xxx.
Document Summary
Section Description
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
About Hotwire Model 7914 Termination Units
features of each version of the Model 7914, and typical
configurations.
Installing the Unit
make connections.
Using Terminal and Switchpack Modes.
instructions for connecting a VT100-compatible terminal
user interface. Also describes how to make manual
configuration changes directly on the board hardware.
Customizing DSX-1-Compatible Units
for modifying configuration options by using the terminal
interface or DIP switches and jumpers on the board.
Customizing V .35/V.11-Compatible Units
instructions for modifying configuration options by using the
terminal interface or DIP switches and jumpers on the
board.
. Describes how to install the unit and
. Provides instructions
. Describes the
Provides
. Provides
7914-A2-GB20-00
February 1998
v
Page 9
About This Guide
Section Description
Chapter 6
Chapter 7
Appendix A
Appendix B
Appendix C
Glossary Defines acronyms and terms used in this document.
Index Lists key terms, acronyms, concepts, and sections in
Product-Related Documents
Document Number Document Title
Monitoring the Unit.
LEDs, and network statistics. Also describes how to monitor
the status of the unit on the opposite side of the SDSL
connection.
Testing
tests.
Worksheets.
settings, and possible settings to use for planning.
. Provides information about available loopback
Contains all the configuration options, default
Cable Pin Assignments.
details.
Switchpack Definitions.
usage.
alphabetical order.
Describes how to monitor unit status,
Contains connector and interface
Defines switchpack location and
7900-A2-GB20
Hotwire Model 7900 Basic Maintenance Processor
User’s Guide
7900-A2-GN20
Hotwire Model 7900 Nest and Options Installation
Guide
7910-A2-GB20
Hotwire Models 7914 and 7915 T1 and E1 SDSL
Nest Card 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
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
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7914-A2-GB20-00
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About Hotwire Model 7914
Termination Units
Hotwire 7914-A1 Models and Features
Products in the Hotwire 7914 family provide “last mile/last kilometer” transport of
T1-compatible circuits between customer facilities and central site equipment
over 2-wire copper lines. The units can be used over distances substantially
exceeding traditional T1 spans and Canadian Standards Association (CSA) loop
standards.
The Hotwire 7914 supports:
1
V.35/V .11 or DSX-1 interface
Fractional T1 using one twisted-copper pair
Tolerance of bridged taps
Local and remote alarm surveillance
Local and remote T1 and SDSL performance monitoring
The Hotwire 7914 may be ordered either as a standalone unit (7914-A1-xxx) or
as a nest-mounted card (7914-B1-xxx) that fits in a Hotwire 7900 nest. This guide
describes the installation and maintenance procedures for the standalone
version, Model 7914-A1-xxx.
To order additional product documentation, refer to
on page vi.
Product-Related Documents
7914-A2-GB20-00
February 1998
1-1
Page 11
Chapter:ChapName
There are several versions of the Model 7914-A1, each supporting a different
interface (DSX-1 or V.35/V .11) and power supply (120 Vac or 220 Vac):
Model Number Features
7914-A1-201 1.544 Mb/s DSX-1 compatible.
Connection to 120 Vac power supply.
7914-A1-202 1.544 Mb/s V.35/V .11 compatible.
Connection to 120 Vac power supply.
7914-A1-301 1.544 Mb/s DSX-1 compatible.
Connection to 230 Vac power supply.
7914-A1-302 1.544 Mb/s V.35/V .11 compatible.
Connection to 230 Vac power supply.
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Typical Configurations
Hotwire Model 7914 standalone units can be used in campus applications where
long loop distances normally require the campus to contract with the local
telephone exchange carrier to deliver private line services across the campus.
Figure 1-1 shows two typical campus applications where remote PBXs or
multiplexers are interconnected across a campus using two Hotwire Model 7914
standalone units. In each pair, one unit is configured as a central site or central
office (CO) unit and the other is the remote or customer premises (CP) unit.
The Hotwire Model 7914 standalone unit is configured at the factory to operate at
the CP side of a T1 SDSL connection. (Conversely, Hotwire Model 7914 nest
cards are configured for CO operation.) The central site unit must be reconfigured
for CO operation in these configurations.
About Hotwire Model 7914 Termination Units
PBX
DSX-1
DSX-1 Unit
Customer Premises
Multiplexer
T1
DSX-1 Unit
Customer Premises
Cross-campus
2-wire facility
Cross-campus
2-wire facility
Figure 1-1. Campus Network Applications
PBX
DSX-1
DSX-1 Unit
Central Site
97-15295a
Multiplexer
T1
DSX-1 Unit
Central Site
97-15718
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About Hotwire Model 7914 Termination Units
Hotwire Model 7914 standalone units are also ideal for delivering T1 services
from a central site to the customer premises over long loop distances without
repeaters.
Figure 1-2 shows a central-site application with a Hotwire 7900 Nest containing
Hotwire Model 7914 nest cards. The nest cards at the central site each terminate
a single SDSL subscriber line. Each line is then converted to a DSX-1 interface
for connection to other central office equipment, such as a digital cross-connect
system (DCS).
PBX
DSX-1
Router
Multiplexer
V.35
V.35 Unit
DSX-1
DSX-1 Unit
DSX-1 Unit
Telco 2-wire
facilities to
customer premises
Nest
Cards
7900 Nest
Central Site
Mgmt
Station
DCS
Customer Premises
Figure 1-2. T1 Extension to Customer Premises
97-15294a
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About Hotwire Model 7914 Termination Units
Cellular network providers must lease large numbers of T1 circuits in order to
connect remote cell sites to mobile telephone switching offices (MTSOs).
Hotwire Model 7914 products provide an alternative to standard repeatered T1
services. Figure 1-3 depicts a typical cellular network access application.
DSX-1
DSX-1
Customer Premises
Figure 1-3. Cellular Network Access
User Interface Types
There are three types of user interfaces to the standalone units:
VT100-compatible terminal interface (see Chapter 3)
Manual setting of switches and jumpers (see Chapter 3)
Cell Site
DSX-1 Unit
Cell Site
DSX-1 Unit
Telco 2-wire facilities
between Cell Sites
and MTSO
Mobile T elephone
Switching Office (MTSO)
Nest
Cards
7900 Nest
Central Site
Mgmt
Station
DSX-1
Switch
97-15297a
7914-A2-GB20-00
Front Panel LED status indicators (see Chapter 6)
February 1998
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Installing the Unit
Overview
This chapter describes the procedure for installing a single standalone
termination unit using a 120 Vac or 230 Vac power supply (Model 7914-A1-20x or
7914-A1-30x).
Package Checklist for Hotwire Model 7914-A1
2
Verify that your package contains the following:
Hotwire Model 7914-A1 Termination Unit
10′ VT100 terminal cable
14′ CAT5 twisted-pair network cable
Power cord with power transformer
Warranty card
User’s Guide
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Installing the Unit
Planning for Your SDSL Application
A pair of Hotwire 7914 Termination Units operates on a standard twisted-pair
phone line. Observe the following restrictions for a successful installation:
Be sure the line consists of twisted pair. Any flat cable has a major negative
effect on loop length that can be supported.
Use Category 5 cable for the user connections.
Plan the phone line to be dedicated to SDSL. The same phone line used for
the 7914 Termination Unit pair cannot also be used at the same time to carry
other voice or data services. This is because the SDSL frequency spectrum
overlaps with the voice band (including voice, fax and analog modems), as
well as the higher spectrums of digital services (including ADSL, HDSL or
ISDN).
Measure or estimate the length of the phone line you plan to use. Hotwire
7914 Termination Units support connections as distant as 18,000 feet (over
three miles) on noise-free 24 AWG wire.
The actual loop length that can be supported will vary, depending on:
— The loop cable gauge
— Noise introduced from neighboring phone lines in the same binder group
or cable (which can change over time)
— Noise introduced at either termination unit, such as interference from a
PC monitor if the phone line is too close by (which can change over time)
Although the line rate is 1.54 Mbps downstream and upstream
simultaneously, the actual throughput will vary depending on:
— Any interfering loop noise present in the cable
— Quality and wire gage of the connecting cable
Handle the termination unit with care and use it in the proper environment.
NOTE:
Keep the cover on the termination unit for performance and for safety
reasons.
2-2
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Connecting to the Network
Procedure
1. Connect one end of the supplied 14′ twisted-pair network cable into the rear
panel DSL jack. Connect the other end to your SDSL network interface.
NOTE:
Do
not
use a flat VF network cable, as this may severely degrade the
performance of the termination unit. Use only twisted-pair network cable.
2.
V.35/V.11-compatible units only:
DB25-to-V.35 Adapter Cable Pin Assignments
(see
assignments) or a cable with DB25 connectors. Connect one end to the
V.35/V.11 socket on the rear panel. Connect the other end to your V.35/V.11
equipment.
Installing the Unit
Use either a DB25-to-V.35 adapter cable
in Appendix B for pin
DSL
48 VDC
V.35 / V.11
V.35/V.11-Compatible Hotwire 7914 – Rear Panel
DSX-1-compatible units only:
3.
Connect a DSX-1 interface cable into the DS1
jack on the rear panel. Connect the other end to your DSX-1 equipment.
DSL DS1
48 VDC
DSX-1-Compatible Hotwire 7914 – Rear Panel
97-15530
97-15714
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Installing the Unit
Connecting Power to the Unit
Plug the power transformer into the appropriate (115 or 230 Vac) power outlet.
Connect the power lead into the –48 Vdc jack on the rear panel.
To obtain information on the power supplies and power cord adapters available,
refer to
this User’s Guide.
Warranty, Sales, and Service Information
on page A at the beginning of
2-4
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Using Terminal and Switchpack
Modes
Choosing a Configuration Mode
You can make configuration changes either through the system terminal menus
(Terminal Mode) or by manually changing switches on the board (Switchpack
Mode). Terminal Mode is the default setting.
In Terminal Mode:
You change configuration parameters by selecting menu options that appear
on a VT100-compatible terminal attached to the front panel of the termination
unit.
3
The standalone unit is configured at the factory for CP (customer premises)
operation.
In Switchpack Mode:
You change configuration parameters by moving switches on the board.
You can still display information about the unit from the terminal and run
loopback tests.
Any changes you made in Terminal Mode are lost when you change to
Switchpack Mode.
Connecting to a System Terminal
An optional system maintenance terminal can be attached to your Model 7914
Termination Unit through the modular jack on the front panel. You can have
terminals attached to both endpoints (CO and CP).
The system terminal must be a VT100-compatible terminal or a PC running
terminal emulation software.
Connect the 9-pin end of the terminal cable into a COM port on your PC. Plug the
other end into the modular jack on the front panel. If your PC requires a 25-pin
connector to the COM port, see Appendix B,
correct cable pinouts.
Cable Pin Assignments
, for the
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Using Terminal and Switchpack Modes
Make sure the parameters on your terminal or PC are set to:
H 9600 baud
H 8 bit
H no parity
H 1 stop bit
H no flow control
Press Return at your terminal keyboard to activate the Main Menu for the
attached unit. The system runs diagnostic tests as it comes up. After a few
seconds, the Main Menu screen appears on your terminal.
Menus are described in Chapters 4 and 5 for the DSX-1 and V.35/V.11 units,
respectively.
Switching Between Terminal and Switchpack Modes
The following procedure is used to change the operating mode of the unit to
either Terminal Mode (the default setting) or Switchpack Mode. Refer to
Chapter 4 (for DSX-1-compatible units) or Chapter 5 (for V.35/V.11-compatible
units) for information on changing configuration options using either of these
modes.
" Procedure
Use electrostatic discharge (ESD) protection when handling the circuit board. To
change the mode:
1. Power down the unit and expose the circuit board by loosening the two
screws on the back panel of the unit and sliding off the cover.
2. See Appendix C,
unit’s board.
3. Locate switchpack S4 by its label on the circuit card.
4. Place the mode switch in the correct position for the desired mode.
Switchpack Definitions
For DSX-1-compatible units:
— Switchpack Mode is configured by setting switches 3–7 for Starting Time
Slot. See Table C-1 in Appendix C.
— Terminal Mode is configured by placing switches 3–7 in the ON position.
For V.35/V.11-compatible units:
— Switchpack Mode is configured by placing switch 8 in the ON position.
— Terminal Mode is configured by placing switch 8 in the Off position.
If you are enabling Switchpack Mode:
5.
jumpers to your desired configuration. Refer to Appendix C,
Definitions
.
, for switchpack locations on your
You must set the switchpacks and
Switchpack
6. Power up the board to reset and enable the new configuration.
3-2
February 1998
7914-A2-GB20-00
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Customizing DSX-1-Compatible
Units
Accessing Configuration Options
This chapter provides instructions on how to change configuration options for
Hotwire Model 7914 standalone units that are DSX-1-compatible. Chapter 5
provides similar information for V.35/V .11-compatible units.
Configuration option settings determine how the unit operates. You can change a
unit’s configuration options by:
Selecting the Board Configuration branch of the Main Menu while in Terminal
Mode.
4
Changing switch settings on the board while in Switchpack Mode.
The Main Menu for a DSX-1-compatible unit on the customer premises (CP) side
appears as follows:
Command→ G123
ATTX – CP – T1 Rate
T1 SDSL STUR Main Menu
1) Board Status
2) Performance Monitor
3) Board Configuration
4) Local Loopback
5) Remote Loopback
6) STUC Menu
R) Board Reset
?) Redisplays this Menu
Command→
This guide depicts the system terminal menus as they appear from a CP unit.
This is the default configuration for Model 7914 standalone units.
The G123 code denotes
a successful startup
CP units are SDSL Termination
Units – Remote (STUR)
CO units are SDSL Termination
Units – Central Office (STUC)
7914-A2-GB20-00
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Customizing DSX-1-Compatible Units
Making Changes from the Terminal Interface
The Board Configuration menu displays the current board software and hardware
settings. It also allows you to change certain parameters on the board.
This function is affected by the status of the switchpack (DIP switch control)
setting.
When operating in Terminal Mode (the system default) you can make
configuration changes through the terminal menus.
When operating in Switchpack Mode, you can display configuration
parameters using the terminal menus, but any configuration changes must be
made using the switches on the circuit board. Refer to
Switchpack Mode
To access the Board Configuration menu, enter 3 at the Main Menu Command
prompt.
The following example shows the menu that appears for a CP unit.
on page 4-4.
Making Changes in
Command→ 3
Board Configuration:
–––––––––––––––––––
1) SDSL Card Type – CP
SDSL Rate Type – T1
2) T1 Line Encode – B8ZS
3) Framing – D4
4) Line Build Out – 0 to 133 feet, 0dB
SDSL FW Rev – 1.0
Globespan FW Rev – 1.12
CP Serial # – 088165
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
1–4) Board Configuration
5) Switchpack Definitions
?) Prints Board Configuration and this menu
Q) Quit
Config→
The Switchpack Definitions screen, option 5 on the Config menu, displays the
switchpack settings to use when changing configuration changes manually. Refer
Displaying Switchpack Definitions
to
on page 4-5.
Possible values for each option are listed in Table 4-1.
NOTE:
See Appendix A,
configuration options for your application.
4-2
Worksheets
February 1998
, for help in selecting the appropriate
7914-A2-GB20-00
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Customizing DSX-1-Compatible Units
Table 4-1. DSX-1-Compatible Units Configuration Options (1 of 1)
1) SDSL Card Type
Possible Settings: CP, CO
Default Setting: CP
Indicates the placement of the unit in the network configuration. To toggle the card type,
enter 1 at the Config prompt.
CP – Unit is on the customer premises side of the SDSL connection.
CO – Unit is on the central office (or central site) side of the SDSL connection.
When SDSL Card Type is changed, a system message warns that the board will
automatically be reset. Enter Y to reset the board and change the type.
2) T1 Line Encode
Possible Settings: B8ZS, AMI
Default Setting: B8ZS
Specifies the type of line encoding used to ensure one’s density in the transmission
signal. To toggle the encoding method, enter 2 at the Config prompt.
B8ZS – Bipolar eights-zeroes substitution.
AMI – Alternate Mark Inversion.
3) Framing
Possible Settings: D4, Unframed, Extended Superframe
Default Setting: D4
Specifies the type of framing to be used. To toggle the framing method, enter 3 at the
Config prompt.
D4 – Commonly used framing method on T1 circuits, consisting of 12 frames of 192 bits
with the 193rd bit used for error checking and other functions. Also called Super
Framing.
Unframed – Framing is disabled.
Extended Superframe – Framing method consisting of 24 frames of 192 bits each, with
the 193rd bit providing timing and other functions. An enhanced version of D4.
4) Line Build Out
Possible Settings: 0 to 133 ft, 133 to 266 ft, 266 to 399 ft, 399 to 533 ft, 533 to 655 ft
Default Setting: 0 to 133 ft
To change the line build-out length, enter 4 at the Config command prompt. Y ou will
then be prompted to select from the following options:
1) 0 to 133 ft
2) 133 to 266 ft
3) 266 to 399 ft
4) 399 to 533 ft
5) 533 to 655 ft
N) No change
NOTE: Additional options may be displayed on your terminal. These other options
(for –7.5, –15, and –22.5 dB) are not for use with this product. Use of these
options will cause a weak signal and degrade performance. Select from
options 1 through 5 only .
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Customizing DSX-1-Compatible Units
Making Changes in Switchpack Mode
When operating in Switchpack Mode, you change configuration options by
moving switches on the board hardware. Each switch in the switchpack controls a
configuration parameter. To enable Switchpack Mode, refer to
Terminal and Switchpack Modes
Procedure
Use electrostatic discharge (ESD) protection when handling the circuit board. To
open the unit and make changes while in Switchpack Mode:
1. Power down the unit and remove the enclosure cover, exposing the circuit
board.
2. Find the switchpack labeled S4. Refer to the board layout illustration in
Appendix C,
3. Place the switchpack in the correct position for each desired configuration
option. The definition of each switch in the switchpack is also provided in
Appendix C,
Switchpack Definitions
Switchpack Definitions
on page 3-2.
Switching Between
.
.
4. Replace the enclosure cover and power up the board to reset and enable the
new configuration.
4-4
February 1998
7914-A2-GB20-00
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Customizing DSX-1-Compatible Units
Configuring Framed or Unframed Operation
(DSX-1-to-DSX-1 Configuration)
In Switchpack Mode, specify Unframed operation by setting switches 3 – 7 on
switchpack S4 to OFF.
Configuring a Starting Time Slot (DSX-1-to-V.35/V.11 Configuration)
In Switchpack Mode, switches 3 – 7 on switchpack S4 determine the starting time
slot, as shown in Table C-1 on page C-2.
If the payload rate (configured on the V.35/V .11-compatible unit) is 1544 kbps, set
switches 3 – 7 all to the OFF position. This is the factory default.
If the payload rate is
less than
time slot (DS0). Make sure that there are enough subsequent time slots to
accommodate the V.35/V .11 payload rate (refer to the Maximum Payload Rate
column in Table C-1 on page C-2). Contact your network administrator to verify
your starting time slot selection, as some time slots may already be in use.
Displaying Switchpack Definitions
To display the definition of each position in switchpack S4, enter 5 at the Config
prompt. Switchpack definitions are also listed in Appendix C,
Definitions
Config→ 4
Switch pack S4 definitions:
1 – CO/CP OFF=CP, ON=CO
2 – AMI/B8ZS OFF=AMI, ON=B8ZS
3–7 – Starting Time Slot (CO only) 1–24 = Starting Time Slot
8 – D4/ESF OFF=D4, ON=ESF
Switch pack S5 definitions:
1–3 – LBO see table below
4–8 – N/A
.
1544 kbps, use switches 3 – 7 to select a starting
Switchpack
25-30 = Starting Time Slot = 24
31 = Switchpack Disable
<<Press a key to continue!>>
Possible values for each parameter are listed in Table 4-1. See Appendix A,
Worksheets
application.
7914-A2-GB20-00
, for help in selecting the appropriate configuration options for your
February 1998
4-5
Page 26
Customizing DSX-1-Compatible Units
Displaying Line Build-Out Definitions
Press any key at the <<Press a key to continue!>> prompt to display the
switchpack S5 settings for line build-out. Use this information to change the line
build-out parameter manually. (Switchpack definitions are also listed in
Appendix C,
S3 S2 S1 LBO SETTING
–––––––––––––––––––––––––––––––––––––
0 0 0 0 to 133 feet – 0dB
0 0 1 133 to 266 feet
0 1 0 266 to 399 feet
0 1 1 399 to 533 feet
1 0 0 533 to 655 feet
1 0 1 -7.5 dB
1 1 0 -15 dB
1 1 1 -22.5 dB
Config→
Switchpack Definitions
.
For example, to change the line build-out to 399 to 533 feet, while in Switchpack
Mode, set position 3 OFF and positions 1 and 2 ON.
NOTE:
The switch combinations for –7.5, –15, and –22.5 dB line build-out are not for
use with this product. Use of these settings will cause a weak signal and
degrade performance.
4-6
February 1998
7914-A2-GB20-00
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Customizing V.35/V.11-Compatible
Units
Accessing Configuration Options
This chapter provides instructions on how to change configuration options for
Hotwire Model 7914 standalone units that are V.35/V .11-compatible. Chapter 4
provides similar information for DSX-1-compatible units.
Configuration option settings determine how the unit operates. You can change a
unit’s configuration options by:
Selecting the Board Configuration branch of the Main Menu while in Terminal
Mode.
5
Changing switchpack and jumper settings on the board hardware while in
Switchpack Mode.
The Main Menu for a V.35/V .11-compatible unit on the customer premises (CP)
side appears as follows:
Command→ G123
ATTX – CP – V.35/V.11
V.35/V.11 SDSL STUR Main Menu
1) Board Status
2) Performance Monitor
3) Board Configuration
4) Local Loopback
5) Remote Loopback
6) STUC Menu
R) Board Reset
?) Redisplays this Menu
Command→
This guide depicts the system terminal menus as they appear from a CP unit.
This is the default configuration for Model 7914 standalone units.
The G123 code denotes
a successful startup
CP units are SDSL Termination
Units – Remote (STUR)
CO units are SDSL Termination
Units – Central Office (STUC)
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Customizing V.35/V .11-Compatible Units
Making Changes from the Terminal Interface
The Board Configuration menu displays the current board software and hardware
settings. It also allows you to change certain parameters on the board.
This function is affected by the status of the switchpack (DIP switch control)
setting.
When operating in Terminal Mode (the system default) you can make
configuration changes through the terminal menus.
When operating in Switchpack Mode, you can display configuration
parameters using the terminal menus, but any configuration changes must be
made using the switchpacks and jumpers on the board hardware. Refer to
Making Changes in Switchpack Mode
To access the Board Configuration menu, enter 3 at the Main Menu Command
prompt.
Command→ 3
on page 5-4.
Board Configuration:
1) SDSL Card Type – CP
SDSL Interface – V.35
2) Payload Rate – 1544 Kbps (Unframed)
Timing – Loop
SDSL FW Rev – 1.2
Globespan FW Rev – 1.12
CP Serial # – 085561
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
1–2) Board Configuration
3) Switchpack Definitions
?) Prints Board Configuration and this menu
Q) Quit
Config→
Possible values for each parameter are listed in Table 5-1. See Appendix A,
Worksheets
, for help in selecting the appropriate configuration options for your
application.
The S4 Switchpack setting is displayed only if the unit is in Switchpack Mode.
5-2
February 1998
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Customizing V.35/V .11-Compatible Units
Table 5-1. V.35/V.11-Compatible Units Configuration Options
1) SDSL Card Type
Possible Settings: CP, CO
Default Setting: CP
Indicates the placement of the unit in the network configuration. To toggle the card type,
enter 1 at the Config prompt.
CP – Unit is on the customer premises side of the SDSL connection. This automatically
sets the unit to use the SDSL local loop for timing.
CO – Unit is on the central office (or central site) side of the SDSL connection. Timing is
configurable to either internal or external (see option 3).
When SDSL Card Type is changed, a system message warns that the board will
automatically be reset. Enter Y to reset the board and change the type.
2) Payload Rate
Possible Settings: 1 to 24 (64 to 1536 kbps), U (1544 kbps Unframed), N (No Change)
Default Setting: 1544 kbps (Unframed)
Specifies the desired payload rate.
1 – 64 kbps (1 x 64) 12 – 768 kbps (12 x 64) 23 – 1472 kbps (23 x 64)
2 – 128 kbps (2 x 64) 13 – 832 kbps (13 x 64) 24 – 1536 kbps (24 x 64)
3 – 192 kbps (3 x 64) 14 – 896 kbps (14 x 64) U – 1544 kbps
4 – 256 kbps (4 x 64) 15 – 960 kbps (15 x 64) (Unframed)
5 – 320 kbps (5 x 64) 16 – 1024 kbps (16 x 64) N – No Change
6 – 384 kbps (6 x 64) 17 – 1088 kbps (17 x 64)
7 – 448 kbps (7 x 64) 18 – 1152 kbps (18 x 64)
8 – 512 kbps (8 x 64) 19 – 1216 kbps (19 x 64)
9 – 576 kbps (9 x 64) 20 – 1280 kbps (20 x 64)
10 – 640 kbps (10 x 64) 21 – 1344 kbps (21 x 64)
11 – 704 kbps (11 x 64) 22 – 1408 kbps (22 x 64)
If you change from a full T1 rate (1544 kbps) to a lower rate, and the far-end unit is
DSX-1-compatible, you must set the starting time slot on the DSX-1-compatible unit.
See Table C-1 in Appendix C.
When Payload Rate is changed, a system message warns that the board will
automatically be reset. Enter Y to reset the board and change the rate.
3) Timing (on CO units only)
Possible Settings: Internal, External
Default Setting: Internal
Determines the timing source. To toggle the timing, enter 3 at the Config prompt. This
option can only be changed on CO units. CP units always use the SDSL local loop for
timing.
Internal – The unit’s internal clock is used as the clock source.
External – The V.35/V.11 interface is used as the clock source.
When Timing is changed, a system message warns that the board will automatically be
reset. Enter Y to reset the board and change the timing.
7914-A2-GB20-00
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Customizing V.35/V.11-Compatible Units
Making Changes in Switchpack Mode
When operating in Switchpack Mode, you change configuration options by
moving switches on the circuit board. To enable Switchpack Mode, refer to
Switching Between Terminal and Switchpack Modes
Procedure
Use electrostatic discharge (ESD) protection when handling the circuit board. To
open the unit and make changes in Switchpack Mode:
1. Power down the unit and remove the enclosure cover, exposing the circuit
board.
2. Find the switchpack for the configuration options you wish to change. Refer
to the board layout illustration in Appendix C,
3. Place the switchpack or jumpers in the correct position for each desired
configuration option.
4. Replace the enclosure cover and power up the board to reset and enable the
new configuration.
on page 3-2.
Switchpack Definitions
.
Selecting V.35 or V.11 Signaling
Jumpers P6 – P21 on the board determine whether the unit uses V.11 or V.35
signaling. The unit defaults to V.35. To switch between V.11 and V.35, you must
move the position of jumpers P6 – P21. Refer Appendix C,
Definitions,
for more information.
Displaying Switchpack Definitions
To display the definition of each position in switchpack S4, enter 3 (for CP units)
or 4 (for CO units) at the Config prompt. Switchpack definitions are also listed in
Appendix C,
Config→ 4
Switch pack S4 definition:
1 – CO/CP OFF=CP, ON=CO
2 – Timing (CO Only) OFF=Internal, ON=External
2 – Unused
3-7 – Payload Rate See table below
8 – Configuration OFF=Terminal, ON=Switchpack
<< Press a key to continue!>>
Switchpack Definitions
Switchpack
.
5-4
February 1998
7914-A2-GB20-00
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Customizing V.35/V.11-Compatible Units
After you press a key to continue displaying the switchpack definitions, the
following table appears. Use the table to set switches 3 through 7 for the desired
payload rate.
Switch pack S4 definitions:
SWPK SWITCHES | SWPK SWITCHES
RATE (Kbps) 7,6,5,4,3 | RATE (Kbps) 7,6,5,4,3
––––––––––––––––––––––––––––––––––––––––––––––––––––––
1544 (Unframed) 00000 | 1024 (16x64) 10000
64 (1x64) 00001 | 1088 (17x64) 10001
128 (2x64) 00010 | 1152 (18x64) 10010
192 (3x64) 00011 | 1216 (19x64) 10011
256 (4x64) 00100 | 1280 (20x64) 10100
320 (5x64) 00101 | 1344 (21x64) 10101
384 (6x64) 00110 | 1408 (22x64) 10110
448 (7x64) 00111 | 1472 (23x64) 10111
512 (8x64) 01000 | 1536 (24x64) 11000
576 (9x64) 01001 | 1536 (24x64) 11001
640 (10x64) 01010 | 1536 (24x64) 11010
704 (11x64) 01011 | 1536 (24x64) 11011
768 (12x64) 01100 | 1536 (24x64) 11100
832 (13x64) 01101 | 1536 (24x64) 11101
896 (14x64) 01110 | 1536 (24x64) 11110
960 (15x64) 01111 | 1536 (24x64) 11111
Config→
Examples:
— For 640 kbps, set switch 7 OFF, 6 ON, 5 OFF, 4 ON, and 3 OFF.
— For 1024 kbps, set switch 7 ON, and switches 6, 5, 4, and 3 OFF.
— For 1536 kbps, set switches 7 and 6 ON, and switches 5, 4, and 3 OFF.
Settings from 11000 (24) through 11111 (31) are interpreted as a request
for 1536 kbps.
If you change from 1544 kbps to a lower rate, and the far-end unit is
DSX-1-compatible, you must set the starting time slot on the DSX-1-compatible
unit and reset the units.
7914-A2-GB20-00
February 1998
5-5
Page 32
Monitoring the Unit
What to Monitor
This chapter presents information on how to access and monitor status and
performance statistics for the unit and its network connection. You can monitor
operations by viewing the:
Board Status option from the Main Menu
Performance Monitor option from the Main Menu
6
Board Status
Board Status and Performance Monitor options from the STUC (or STUR)
Menu (for displaying information about the unit on the other end of the
connection)
Front Panel LEDs
The Board Status option from the Main Menu displays the SDSL circuit
operational status. Enter 1 at the Command prompt to display board status.
Command→ 1
Board Status
––––––––––––
T1 STATUS: Network is UP
LOOPBACK STATUS: OFF
SDSL STATUS: LOOP is UP
S/N RATIO: 44.0 dB
Command→
Board Status for DSX-1-Compatible Unit
7914-A2-GB20-00
February 1998
6-1
Page 33
Monitoring the Unit
Command→ 1
Board Status
––––––––––––
DTR: ACTIVE
DSR: ACTIVE
LOOPBACK STATUS: OFF
SDSL STATUS: LOOP is UP
S/N RATIO: 43.5 dB.
Command→
Board Status for V.35/V.11-Compatible Unit
T1 status displays one of the following:
— Network is Up
— Receive Carrier Loss
— Receive Remote Alarm
— Receive Unframed All 1’s
DTR and DSR are either Active or Inactive. DSR becomes active in response
to DTR (with SDSL loop up and data transmission possible).
Loopback status is either OFF, Local Loopback ON, or Remote Loopback
ON.
SDSL Status displays whether the loop is up or down.
Signal to Noise (S/N) ratio is not displayed if the loop is down.
6-2
February 1998
7914-A2-GB20-00
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Performance Statistics
Performance monitoring allows more detailed observations of error conditions
detected on the circuit. The Performance Monitor menu options provide statistics
on errors received and recorded, in defined time periods from the previous
minute to the previous 24 hours, plus a running total. These statistics can be
cleared and restarted at any time.
Enter 2 at the Command prompt to display the Performance Monitor menu.
Command→ 2
Performance Monitor
––––––––––––––––––––––
Time Since Board Power–Up or Reset: 0000d 00h 00m
1 – 1 minute stats.
2 – 15 minute stats.
3 – 1 hour stats.
4 – 12 hour stats.
5 – 24 hour stats.
6 – Running total.
7 – Clear Statistics.
Q – Quit
Monitoring the Unit
stats→
Select from the above list to display statistics for a specified time period.
NOTE:
There is no verification presented before statistics are deleted. Be
sure you want to clear all statistics before pressing 7.
7914-A2-GB20-00
February 1998
6-3
Page 35
Monitoring the Unit
For example, pressing 1 at the stats prompt yields a screen like the following:
stats→ 1
Current 1 minute:
SDSL Errors: T1 Errors:
FAW – 0 BPV – 0
CRC – 0 MOS – 0
FEBE – 0 FAS – 0
CRC – 0
Previous 1 minute:
SDSL Errors: T1 Errors:
FAW – 0 BPV – 0
CRC – 0 MOS – 0
FEBE – 0 FAS – 0
CRC – 0
stats→
(D4 framing only)
(ESF framing only)
(D4 framing only)
(ESF framing only)
Performance statistics have a maximum value of 65,536. If the maximum
value is reached, the statistic resets to zero.
Performance statistics are updated every second.
T1 Errors (BPV, MOS, FAS, and CRC) are only displayed for
DSX-1-compatible units that are operating in framed mode.
Interface
SDSL
T1
Counter Meaning
FAW Frame Alignment Word. Loss of synchronization
was detected.
CRC Cyclic Redundancy Check. An invalid CRC value
was detected.
FEBE Far End Bit Error. An error was reported by the
remote equipment.
BPV Bipolar Violation. Two consecutive pulses of the
same poalrity were detected.
MOS Multiframe Out of Sync. Loss of synchronization
was detected.
FAS Frame Alignment Signal. A loss of signal was
detected. (Shown only when Framing is set to D4.)
CRC Cyclic Redundancy Check. An invalid CRC value
was detected. (Shown only when Framing is set to
ESF.)
6-4
February 1998
7914-A2-GB20-00
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Remote Unit Information
The same type of information provided for the locally attached unit (CP or CO)
can also be displayed (but not changed) for the unit on the other side of the
connection (CO or CP).
From a terminal attached to a CP unit, you can display information about the CO
unit by using the STUC Menu options. Similarly, from a terminal attached to a CO
unit, the STUR Menu allows you to display information about the CP unit.
To access the STUC (or STUR) Menu, enter 6 at the Command prompt.
***** STUC Menu *****
1) Board Status
2) Performance Monitor
3) Board Configuration
?) Redisplay this menu
Q) Quit
Monitoring the Unit
STUC Command→
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February 1998
6-5
Page 37
Monitoring the Unit
Front Panel LEDs
T1 SDSL
TERMINAL
NETWORK SYSTEM DSL
Local
Remote
Loop Bk
PWR
FAIL
Front Panel LEDs for DSX-1-Compatible Unit
T1 SDSL
TERMINAL
CTS
RTS
TXD
RXD
Loop Bk
Front Panel LEDs for V.35/V.11-Compatible Unit
Loop
PWR
FAIL
Loop
TM
TM
7900
7900
97-15716
7900
97-15717
LED Meaning
Local The local T1 interface has a loss of signal.
Remote The remote T1 interface has a loss of signal.
Loop Bk The unit is in loopback. Refer to Chapter 7,
PWR Power is applied to the unit.
FAIL The processor has halted and repairs are required.
Loop A failure in the SDSL loop has been detected.
NOTE: The Loop LED lights or blinks during power up, then goes
out when the loop has been established.
Testing
, for more information.
6-6
February 1998
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Testing
Detecting a Problem
The unit can detect and report problem conditions and perform diagnostic tests.
The unit offers a number of indicators to alert you to possible problems, as
described in Chapter 6,
Board Status and performance statistics
Remote unit board status and performance statistics
Monitoring the Unit
7
:
Front Panel LEDs
Understanding Loopback Tests
Loopback is a diagnostic function that enables a technician to isolate equipment
on the SDSL circuit to determine where on the circuit trouble may be occurring.
Loopback takes the system off-line. Data received from T1 or V.35/V.11
application equipment is looped back.
“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.
Figures 7-1 through 7-4 illustrate how local and remote loopbacks operate in
different configurations. The bold arrows indicate the direction of data flow.
7914-A2-GB20-00
February 1998
7-1
Page 39
Testing
Local Loopbacks
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 CP
Diagnostic
Equipment
E1 HDSL
7900
7900
E1 HDSL
Loop Bk
LED lights
Terminal
Figure 7-1. Local Loopback Initiated by the CO Unit
CO CP
Diagnostic
Equipment
E1 HDSL
7900
7900
E1 HDSL
7900
7900
7900
7900
Diagnostic
Equipment
97-15249-01
Diagnostic
Equipment
Loop Bk
LED lights
Figure 7-2. Local Loopback Initiated by the CP Unit
Terminal
97-15518
7-2
February 1998
7914-A2-GB20-00
Page 40
Remote Loopbacks
Testing
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 CP
Diagnostic
Equipment
E1 HDSL
7900
7900
E1 HDSL
Loop Bk
LED lights
Terminal
Figure 7-3. Remote Loopback Initiated by the CO Unit
CO CP
Diagnostic
Equipment
E1 HDSL
7900
7900
Loop Bk
LED lights
E1 HDSL
Diagnostic
7900
7900
Equipment
97-15259-01
Diagnostic
7900
7900
Equipment
Figure 7-4. Remote Loopback Initiated by the CP Unit
7914-A2-GB20-00
February 1998
Terminal
97-15517
7-3
Page 41
Testing
Starting and Ending Loopbacks
To start or end a local loopback test, enter 4 at the Command prompt.
Command→ 4
Local Loopback is Enabled!
Command→ 4
Local Loopback is Disabled!
To start or end a remote loopback test, enter 5 at the Command prompt.
Command→ 5
Remote Loopback is Enabled!
Resetting the Unit
Enter R at the Command prompt to reset the board. This is equivalent to cycling
the power.
If “y” is selected, the Main Menu is displayed, the loop goes down, and the Loop
LED blinks until the loop is restored.
Pressing any key other than “y” is interpreted as an “n”.
Command→ 5
Remote Loopback is Disabled!
Command→ R
Reset will bring the loop down. Are you sure? (y/n)
Command→
7-4
February 1998
7914-A2-GB20-00
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Worksheets
Overview
A
This appendix provides the correct configuration settings based on the types of
units (DSX-1-compatible or V.35/V .11-compatible) on either end of the SDSL
connection. There are three combinations of the two types of units:
DSX-1-compatible units on both ends
V.35/V .11-compatible CP unit, DSX-1-compatible CO unit
V.35/V.11-compatible units on both ends
7914-A2-GB20-00
February 1998
A-1
Page 43
Worksheets
DSX-1-to-DSX-1 Configuration
Multiplexer
T1
DSX-1 Unit
Customer Premises
Cross-campus
2-wire facility
Multiplexer
T1
DSX-1 Unit
Central Site
97-15718
To connect two DSX-1-compatible units, configure the units as follows. Terminal
Mode factory defaults are in bold (for Switchpack mode defaults, see
Appendix C,
Configuration
Option
Card Type CP (default) CO
T1 Line Encoding B8ZS or AMI Must be same as CP side
Framing D4, Extended Superframe,
Line Build-Out Enter 4 at the Config
Switchpack Definitions
DSX-1-Compatible Unit
(Customer Premises)
or Unframed
command prompt. Select
from the following options:
1) 0 to 133 ft
2) 133 to 266 ft
3) 266 to 399 ft
4) 399 to 533 ft
5) 533 to 655 ft
).
DSX-1-Compatible Unit
(Central Site)
Must be same as CP side
Enter 4 at the Config command
prompt. Select from the following
options:
1) 0 to 133 ft
2) 133 to 266 ft
3) 266 to 399 ft
4) 399 to 533 ft
5) 533 to 655 ft
A-2
7914-A2-GB20-00February 1998
Page 44
DSX-1-to-V.35/V.11 Configuration
To connect a DSX-1-compatible unit on the CO side and a V.35/V.11-compatible
unit on the CP side, configure the units as follows. Terminal Mode factory defaults
are in bold (for Switchpack mode defaults, see Appendix C,
Definitions
).
Worksheets
Switchpack
Configuration
Option
Card Type CP CO
Payload Rate U (Unframed 1544 kbps)
Framing N/A Use D4, Extended Superframe, or
T1 Line Encode N/A B8ZS or AMI
Line Build-Out N/A Enter 4 at the Config command
V.35/V.11-Compatible Unit
(Customer Premises)
1 – 24 (64 – 1536 kbps)
V.35/V.11-to-V.35/V.11 Configuration
DSX-1-Compatible Unit
(Central Site)
See Table C-1 in Appendix C.
Unframed.
prompt. Select from the following
options:
1) 0 to 133 ft
2) 133 to 266 ft
3) 266 to 399 ft
4) 399 to 533 ft
5) 533 to 655 ft
7914-A2-GB20-00
LAN
Router
Customer Premises
V.35
V.35 Unit
Cross-campus
2-wire facility
V.35
V.35 Unit
Central Site
LAN
Router
97-15534
To connect two V.35/V.11-compatible units, configure the units as follows.
Terminal Mode factory defaults are in bold (for Switchpack mode defaults, see
Appendix C,
Configuration
Option
Card Type CP CO
Payload Rate U (Unframed 1544 kbps)
Timing Loop (not configurable) Internal or External
Switchpack Definitions
V.35/V.11-Compatible Unit
(Customer Premises)
1 – 24 (64 – 1536 kbps)
February 1998
).
V.35/V.11-Compatible Unit
(Central Site)
Must be same as CP side
A-3
Page 45
Worksheets
DSX-1-Compatible Units Configuration Worksheet
Board Configuration
Configuration Option Settings
SDSL Card Type CP, CO
T1 Line Encode B8ZS, AMI
Framing D4, Unframed, Extended Superframe
Line Build Out 1) 0 to 133 feet – 0 dB
2) 133 to 266 feet
3) 266 to 399 feet
4) 399 to 533 feet
5) 533 to 655 feet
Terminal Mode Defaults in Bold
V.35/V.11-Compatible Units Configuration Worksheet
Board Configuration
Configuration Option Settings
SDSL Card Type CP, CO
Payload Rate 1 – 1 x 64 (64 kbps) 17 – 17 x 64 (1088 kbps)
2 – 2 x 64 (128 kbps) 18 – 18 x 64 (1152 kbps)
3 – 3 x 64 (192 kbps) 19 – 19 x 64 (1216 kbps)
4 – 4 x 64 (256 kbps) 20 – 20 x 64 (1280 kbps)
5 – 5 x 64 (320 kbps) 21 – 21 x 64 (1344 kbps)
6 – 6 x 64 (384 kbps) 22 – 22 x 64 (1408 kbps)
7 – 7 x 64 (448 kbps) 23 – 23 x 64 (1472 kbps)
8 – 8 x 64 (512 kbps) 24 – 24 x 64 (1536 kbps)
9 – 9 x 64 (576 kbps) U – Unframed (1544 kbps)
10 – 10 x 64 (640 kbps)
11 – 11 x 64 (704 kbps)
12 – 12 x 64 (768 kbps)
13 – 13 x 64 (832 kbps)
14 – 14 x 64 (896 kbps)
15 – 15 x 64 (960 kbps)
16 – 16 x 64 (1024 kbps)
Terminal Mode Defaults in Bold
Timing Loop (for CP Units)
A-4
Internal or External (for CO units)
7914-A2-GB20-00February 1998
Page 46
Cable Pin Assignments
2
Terminal Connection Cable
This section defines the pin assignments for the terminal cable from the front
panel modular jack to your PC’s COM port.
If your PC’s COM port requires a 9-pin D-shell connector, the cable must use the
following pin assignments.
B
RXD
TXD
GND
Modular
Pin
1
4
5
7
8
9-Pin
D-Shell Pin
3
2
5
1
4
6
7
8
TXD
RXD
GND
DCD
DTR
DSR
RTS
CTS
97-15268-0
7914-A2-GB20-00
February 1998
B-1
Page 47
Cable Pin Assignments
1
If your PC’s COM port requires a 25-pin D-shell connector, the cable must use
the following pin assignments.
RXD
TXD
GND
Modular
Pin
1
4
5
7
8
25-Pin
D-Shell Pin
2
3
7
6
8
20
4
5
SDSL Connection Cable Pin Assignments
The SDSL modular connector that plugs into the rear panel of the unit has the
following pin assignments.
Pin
Signal
TXD
RXD
GND
DSR
DCD
DTR
RTS
CTS
97-15442-0
1 Loop Tip
2 Loop Ring
3 – 8 unused
NOTE:
Pin 1 is on the left when viewing the jack from its inserted position.
B-2
7914-A2-GB20-00February 1998
Page 48
T1 Network Connection Cable Pin Assignments
The modular connector that plugs into the rear panel of DSX-1-compatible units
has the following pin assignments.
Cable Pin Assignments
Pin
1 Tx Ring
2 Tx Tip
3 open
4 Rx Ring
5 Rx Tip
6 – 8 open
Signal
NOTE:
Pin 1 is on the left when viewing the jack from its inserted position.
7914-A2-GB20-00
February 1998
B-3
Page 49
Cable Pin Assignments
V.35/V.11 Connection Cable Pin Assignments
The connector that plugs into the rear panel of V.35/V .11-compatible units has the
following pin assignments.
CCITT
Code
101 A PG Protective Ground Machine ground
102 B SG Signal Ground Ground reference for all circuits
105 C RTS ← Request to Send DTE has message to send
106 D CTS → Clear to Send DCE is ready to accept and transmit DTE data
107 E DSR → Data Set Ready DCE is ready to operate
109 F RLSD → Data Channel
108 H DTR ← Data Receiver Ready DTE is ready to operate
141 L LL ← Local Loopback Local loopback
140 N RDL ← Loopback/
103 P TXD ← Transmit Data (A) Data generated by DTE
104 R/D RXD → Received Data (A) Data received by DTE
103 S TXD ← Transmitted Data (B) Data generated by DTE
104 R RXD → Received Data (B) Data received by DTE
Pin Name
Direction
DCE DTE
Function Description
DCE is receiving a carrier signal
Received Line Signal
Detector
Remote loopback
Maintenance
113 U EXT
CLK
115 V RSET → Receiver Signal
113 W EXT
CLK
115 X RSET → Receiver Signal
114 Y TSET → Transmit Signal
114 a TSET → Transmit Signal
142 n TST → Test Indicator Reserved for test
← Transmitter Signal
Element Time (A)
Element Timing (A)
← Transmitter Signal
Element Timing (B)
Element Timing (B)
Element Timing (A)
Element Timing (B)
To help detect center of signaling element on BA
To help detect center of signaling element on BB
To help detect center of signaling element on BA
To help detect center of signaling element on BB
To help detect center of signaling element on BA
To help detect center of signaling element on BB
B-4
7914-A2-GB20-00February 1998
Page 50
DB25-to-V.35 Adapter Cable Pin Assignments
If you wish to connect a V.35/V .11-compatible unit to a 34-pin V.35 interface, use
a DB25-to-V.35 adapter cable with the following pin assignments.
Cable Pin Assignments
13
12
11
10
9
8
7
6
5
4
3
2
1
SHIELD
TD-A
TD-B
RD-A
RD-B
TXC-A
TXC-B
RXC-A
RXC-B
RTS
CTS
RLSD
DSR
SIG. COMMON
TT-A
TT-B
DTR
RL
LL
TM
97-15569
DB25
PLUG
1
2
14
3
16
15
12
17
9
4
5
8
6
7
24
11
20
21
18
25
25
24
23
22
21
20
19
18
17
16
15
14
MS34
SOCKET
A
P
S
R
T
Y
AA
V
X
C
D
F
E
B
U
W
H
N
L
NN
V.35
SIGNAL
SHIELD
TD-A
TD-B
RD-A
RD-B
TXC-A
TXC-B
RXC-A
RXC-B
RTS
CTS
RLSD
DSR
SIG. COMMON
TT-A
TT-B
DTR
RL
LL
TM
7914-A2-GB20-00
February 1998
97-15670
B-5
Page 51
Switchpack Definitions
1
DSX-1-Compatible Units
VT100 Terminal
Modular Jack
ON
C
Switchpack S4
678
12345
DSL Line Jack
S4
S5
* Default in bold
Position
1
2
3 – 7
8
ON
Position
1 – 3
4 – 8
Settings*
OFF = CP
ON = CO
OFF = AMI line encoding
ON = B8ZS line encoding
Starting Time Slot or
Terminal Mode (see Table C-1)
OFF = D4
ON = ESF
Switchpack S5
678
12345
Settings*
Line Build Out (See Table C-2)
Unused
DSX-1-Compatible Unit Switchpack Location
7914-A2-GB20-00
February 1998
98-15719-0
C-1
Page 52
Switchpack Definitions
Starting
Maximum Payload Rate
For DSX-1-to-V.35/V.11 Configurations: Table C-1 provides information on how to
set switches 3 – 7 in order to select either Unframed operation (for a 1544 kbps
payload rate) or a starting time slot (when the payload rate is less than
1544 kbps). Switches 3 – 7 can also be used to select Terminal Mode.
Refer to page 4-5 for more information.
Table C-1. Starting Time Slot: Switches 3 – 7 on Switchpack S4
Starting
Time Slot
[Not
Applicable]
1 ON OFF OFF OFF OFF 1536 kbps (24 x 64)
2 OFF ON OFF OFF OFF 1472 kbps (23 x 64)
3 ON ON OFF OFF OFF 1408 kbps (22 x 64)
4 OFF OFF ON OFF OFF 1344 kbps (21 x 64)
5 ON OFF ON OFF OFF 1280 kbps (20 x 64)
6 OFF ON ON OFF OFF 1216 kbps (19 x 64)
7 ON ON ON OFF OFF 1152 kbps (18 x 64)
8 OFF OFF OFF ON OFF 1088 kbps (17 x 64)
9 ON OFF OFF ON OFF 1024 kbps (16 x 64)
10 OFF ON OFF ON OFF 960 kbps (15 x 64)
11 ON ON OFF ON OFF 896 kbps (14 x 64)
12 OFF OFF ON ON OFF 832 kbps (13 x 64)
13 ON OFF ON ON OFF 768 kbps (12 x 64)
Switch Position
3 4 5 6 7
OFF OFF OFF OFF OFF 1544 kbps (Unframed)
Maximum Payload Rate
Starting at Time Slot
14 OFF ON ON ON OFF 704 kbps (11 x 64)
15 ON ON ON ON OFF 640 kbps (10 x 64)
16 OFF OFF OFF OFF ON 576 kbps (9 x 64)
17 ON OFF OFF OFF ON 512 kbps (8 x 64)
18 OFF ON OFF OFF ON 448 kbps (7 x 64)
19 ON ON OFF OFF ON 384 kbps (6 x 64)
20 OFF OFF ON OFF ON 320 kbps (5 x 64)
21 ON OFF ON OFF ON 256 kbps (4 x 64)
22 OFF ON ON OFF ON 192 kbps (3 x 64)
23 ON ON ON OFF ON 128 kbps (2 x 64)
24 OFF OFF OFF ON ON 64 kbps (1 x 64)
[Not
Applicable]
C-2
ON ON ON ON ON [Unit set for Terminal Mode]
7914-A2-GB20-00February 1998
Page 53
Switchpack Definitions
Table C-2 shows how to set switches 1–3 on Switchpack S5 for the different Line
Build Out values.
Table C-2. Line Build Out: Switches 1 – 3 on
Switchpack S5
Switch Position
Line Build Out
0–133 Feet OFF OFF OFF
133–266 Feet ON OFF OFF
266–399 Feet OFF ON OFF
399–533 Feet ON ON OFF
533–655 Feet OFF OFF ON
–7 dB ON OFF ON
–15 dB OFF ON ON
–22 dB ON ON ON
1 2 3
7914-A2-GB20-00
February 1998
C-3
Page 54
Switchpack Definitions
5
V.35/V.11-Compatible Units
VT100 Terminal
Modular Jack
Switchpack S4
678
12345
ON
DSL Line Jack
Position
S4
1
2
Settings*
OFF = CP
ON = CO
For CO units:
OFF = Internal timing
ON = External timing
For CP units: unused, leave OFF
3, 4, 5, 6, 7
8
321
P21
P20
P19
P18
P17
P16
P15
P14
P13
P12
P11
P10P9P8P7P6
Payload Rate (see table)
OFF = Terminal Mode
ON = Switchpack Mode
Jumpers P6 to P21
V.35 / V.11
Pins*
1-2
2-3
Settings*
V.35 signaling
V.11 signaling
* Default in bold
V.35/V.11-Compatible Unit Switchpack and Jumper Locations
Jumpers P6 – P21 must be set in the same position at all times. For V.35
signaling, each jumper must be placed on Pins 1 and 2. For V.11 signaling,
each jumper must be placed on Pins 2 and 3.
97-1552
See Table C-3 for switch positions to use for each supported payload rate.
C-4
7914-A2-GB20-00February 1998
Page 55
Table C-3. Payload Rate: Switches 3 – 7 on Switchpack S4
(p)
Switch Position
Switchpack Definitions
Payload Rate
Unframed (1544 kbps) OFF OFF OFF OFF OFF
1 x 64 (64 kbps) ON OFF OFF OFF OFF
2 x 64 (128 kbps) OFF ON OFF OFF OFF
3 x 64 (192 kbps) ON ON OFF OFF OFF
4 x 64 (256 kbps) OFF OFF ON OFF OFF
5 x 64 (320 kbps) ON OFF ON OFF OFF
6 x 64 (384 kbps) OFF ON ON OFF OFF
7 x 64 (448 kbps) ON ON ON OFF OFF
8 x 64 (512 kbps) OFF OFF OFF ON OFF
9 x 64 (576 kbps) ON OFF OFF ON OFF
10 x 64 (640 kbps) OFF ON OFF ON OFF
11 x 64 (704 kbps) ON ON OFF ON OFF
12 x 64 (768 kbps) OFF OFF ON ON OFF
13 x 64 (832 kbps) ON OFF ON ON OFF
14 x 64 (896 kbps) OFF ON ON ON OFF
15 x 64 (960 kbps) ON ON ON ON OFF
3 4 5 6 7
16 x 64 (1024 kbps) OFF OFF OFF OFF ON
17 x 64 (1088 kbps) ON OFF OFF OFF ON
18 x 64 (1 152 kbps) OFF ON OFF OFF ON
19 x 64 (1216 kbps) ON ON OFF OFF ON
20 x 64 (1280 kbps) OFF OFF ON OFF ON
21 x 64 (1344 kbps) ON OFF ON OFF ON
22 x 64 (1408 kbps) OFF ON ON OFF ON
23 x 64 (1472 kbps) ON ON ON OFF ON
24 x 64 (1536 kbps)
OFF OFF OFF ON ON
ON OFF OFF ON ON
OFF ON OFF ON ON
ON ON OFF ON ON
OFF OFF ON ON ON
ON OFF ON ON ON
OFF ON ON ON ON
ON ON ON ON ON
7914-A2-GB20-00
February 1998
C-5
Page 56
Glossary
AMI
BPV
B8ZS
CD
CO
COM port
CP
CPE
CRC
CTS
CV
DCE
Alternate Mark Inversion coding format.
Bipolar Violation. A type of error detected by using a modified bipolar signaling method in
which a control code is inserted.
Bipolar with eights and Zeroes Substitution. An encoding scheme for transmitting clear
channel signals over a T1 line.
Carrier Detect. A signal indicating that energy exists on the transmission circuit.
Associated with Pin 8 on an EIA-232 interface.
Central Office. As used in this manual, CO denotes any central site as distinguished from
the Customer Premises site.
Communications port. A computer’s serial communications port used to transmit to and
receive data from a DCE. The DCE connects directly to this port.
Customer Premises.
Customer Premises Equipment. Terminating equipment supplied by either the customer or
some other supplier that is connected to the telecommunications network (e.g., DSUs,
terminals, phones, routers, modems).
Cyclic Redundancy Check. A commonly used method of error detection.
Clear to Send. An EIA-lead standard for V.24 circuit CT 106; an output signal
(DCE-to-DTE).
Code Violation. This is equivalent to a BPV.
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
DSX-1
DS1
DTE
DTR
E1
factory defaults
FAS
FAW
7914-A2-GB20-00
Data Set Ready . A signal from the modem to the DTE that indicates the modem is turned
ON and connected to the DTE.
Digital Signal cross-connection (of network equipment) at T1 rates.
Digital Signal level 1. A framing specification for T1 circuits.
Data Terminal Equipment. The equipment, such as computers and printers, that provides
or creates data.
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.
A data signaling rate common outside the United States. A wideband interface operating at
2.048 Mbps defined by CCITT standards G.703 and G.704.
A predetermined set of configuration options for general operation.
Frame Alignment Signal . A loss of signal (LOS) error detection.
Frame Alignment Word. A loss of synchronization error detection.
February 1998
GL-1
Page 57
Glossary
FCC
FEBE
HDB3
HDSL
LED
loopback
MOS
multiframe
OOF
reset
RTS
RXD
Federal Communications Commission. Board of Commissioners that regulates all U.S.
interstate, intrastate, and foreign electrical communication systems that originate from the
United States.
Far End Bit Error. Number of errors reported by the remote equipment.
High Density Bipolar 3 coding format.
High-bit-rate Digital Subscriber Loop. Provides high bandwidth, bi-directional transmission
over copper wire for both T1 and E1 services.
Light Emitting Diode. A status indicator that responds to the presence of a certain
conditions.
Used to test various portions of a data link in order to isolate an equipment or data line
problem. A diagnostic procedure that sends a test message back to its origination point.
Multiframe Out of Sync. An error was detected in the synchronization of a multiframe.
An ordered, functional sequence of frames on a multiplexed digital circuit.
Out Of Frame. An error condition in which frame synchronization bits are in error. A
network-reported condition.
A reinitialization of the device that occurs at power-up or in response to a reset command.
Request to Send. An EIA-lead standard for V.24 circuit CT 105; an input signal
(DTE-to-DCE).
Received Data. An EIA-lead standard for V.24 circuit CT 104; an output signal
(DCE-to-DTE).
SDSL
S/N
STU
STU-C
STU-R
T1
TXD
V.35
Symetrical Digital Subscriber Loop. Provides high bandwidth, bi-directional transmission
over copper wire for both T1 and E1 services using 2 wires.
Signal to Noise. A ratio, expressed in decibels, of the usable signal and interference on a
line.
SDSL Termination Unit. A generic reference to either an STU-C or STU-R module.
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).
SDSL Termination Unit – Remote. The module at the CP (customer premises) end of an
HDSL connection. Also known as a Network Termination Unit (NTU).
A data signaling rate common in the United States. A term for a digital carrier facility used
to transmit a DS1 formatted signal of 1.544 Mbps.
Transmit Data. An EIA-lead standard for V.24 circuit CT 103; an input signal
(DTE-to-DCE).
ITU-T standard for a high-speed, 34-pin, DCE/DTE interface.
GL-2
February 1998
7914-A2-GB20-00
Page 58
Index
A
AMI line encoding, 4-3
B
B8ZS line encoding, 4-3
Board Configuration menu, 4-2, 5-2
board status, 6-1
for remote unit, 6-5
C
cables
connecting power, 2-4
connecting to network, 2-3
DB25-to-V.35 adapter, B-5
pin assignments, B-1
restrictions, 2-2
SDSL connection, B-2
T1 network connection, B-3
terminal connection, B-1
V.35/V.11 connection, B-4
card type
DSX-1-compatible units, 4-3
V.35-compatible units, 5-3
changing data rate, 5-5
changing switches
DSX-1-compatible units, 4-4
V.35-compatible units, 5-4
COM port settings, 3-1
configuration options
Switchpack Mode, 4-4, 5-4
Terminal Mode, 4-2, 5-2
worksheets, A-1
configuration worksheets
DSX-1-compatible unit, A-4
V.35-compatible unit, A-4– A-6
configurations
campus network, 1-3
cellular, 1-5
central site, 1-4
customer service, B
D
D4 framing, 4-3
data rate, 5-3, 5-5
DB25-to-V.35 adapter cable, installation, 2-3
display
board status, 6-1
line build-out definitions, 4-6
performance statistics, 6-3
remote unit information, 6-5
switchpack definitions, 4-5, 5-4
documentation, related, vi
DS0 selection, 4-5
DSX-1 interface cable, installation, 2-3
DSX-1 to V.35 configuration, A-3
DSX-1-to-DSX-1 configuration, A-2
DTE cable, 2-3
E
examples
CO and CP configuration options, A-1
network configurations, 1-3
extended superframe, 4-3
F
framing options, 4-3, 4-5
front panel LEDs, 6-6
I
installation, 2-1
network cable, 2-3
power supply , 2-4
preparation, 2-2
system terminal, 3-1
7914-A2-GB20-00 February 1998
IN-1
Page 59
Index
L
LEDs, 6-6
DSX-1-compatible unit, 6-6
V.35-compatible unit, 6-6
line build-out
how to display , 4-6
options, 4-3
line encoding, 4-3
line encoding options, 4-3
local loopback test, 7-2
loop length, 2-2
loopback tests, 7-1
local, 7-2
overview, 7-1
remote, 7-3
starting and ending, 7-4
M
Main Menu
DSX-1-compatible unit, 4-1
V.35/V.11-compatible unit, 5-1
menus
Board Configuration, 4-2, 5-2
Main, 4-1, 5-1
Switchpack definitions, 5-4
model numbers, 1-2
monitoring
board status, 6-1
performance statistics, 6-3
N
network cable
installation, 2-3
pin assignments, B-3
network performance statistics, 6-3
O
overview
installation, 2-1
loopback tests, 7-1
of user interfaces, 1-5
of User’s Guide, v
P
packing list, 2-1
part numbers
for user documentation, vi
of all models, 1-2
payload rate
configuration options, 5-3
Switchpack definitions screen, 5-5
PC requirements, 3-2
performance statistics, 6-3
pin assignments, B-1
planning, 2-2
power supplies
by model number, 1-2
installation, 2-4
problems, detecting, 7-1
R
rear panel diagram, 2-3
related documents, vi
remote loopback test, 7-3
remote unit status, 6-5
resetting the unit, 4-3, 5-3, 7-4
S
SDSL cable, pin assignments, B-2
service information, B
site preparation, 2-2
starting time slot, 4-5
statistics, performance monitor, 6-3
status
circuit card, 6-1
remote unit, 6-5
summary
of chapters, v
of features, 1-1
of user interfaces, 1-5
Switchpack Mode
DSX-1-compatible units, 4-4
V.35-compatible units, 5-4
overview, 3-1
switching to and from, 3-2
switchpacks
DSX-1-compatible unit, C-1
V.35-compatible unit, C-4
how to display , 4-5, 5-4
IN-2
February 1998
7914-A2-GB20-00
Page 60
Index
T
T1 Line Encoding, 4-3
terminal cable, pin assignments, B-1
terminal interface, communication parameters, 3-2
Terminal Mode
DSX-1-compatible unit, 4-2
overview, 3-1
switching to and from, 3-2
V.35/V.11-compatible unit, 5-2
testing, 7-1
time slot selection, 4-5
U
unframed, 4-3
user interface, 1-5, 3-1
V
V.11, jumper settings for, C-4
V.35
adapter cable, B-5
jumper settings for, C-4
V.35 to DSX-1 configuration, A-3
V.35 to V.35 configuration, A-3
V.35/V.11 signaling, default, 5-4
W
warranty telephone number, B
worksheets, A-1
7914-A2-GB20-00 February 1998
IN-3
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