ADC H4TU-C-231-L5A User manual

USER MANUAL
HiGain H4TU-C-231 List 5A Line Unit
Product Catalog: H4TU-C-231-L5A
CLEI:VACKMFKA

LTPH-UM-1253-01
ii October 15, 2003 H4TU-C-231 List 5A
Revision History of This Manual
To order copies of this manual, use document catalog number LTPH-UM-1253-01.
Copyright
October 15, 2003
© 2003 ADC Telecommunications, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.
HiGain is a registered trademark of ADC DSL Systems, Inc. No right, license, or interest to such trademarks is granted hereunder,
and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark.
Other product names mentioned in this document are used for identification purposes only and may be trademarks or registered
trademarks of their respective companies.
Disclaimer of Liability
Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied,
reproduced or disclosed in whole or in part without the written consent of ADC.
Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no
event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further disclaims any
and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all
products, publications and services during and after the warranty period.
Issue Release Date Revisions Made
1October 15, 2003 Initial release

LTPH-UM-1253-01 Using This Manual
H4TU-C-231 List 5A October 15, 2003 iii
USING THIS MANUAL
The following conventions are used in this manual:
•Monospace type indicates screen text.
•Keys you press are indicated by small icons such as or . Key combinations to be pressed
simultaneously are indicated with a plus sign as follows: + .
•Items you select are in bold.
•Three types of messages, identified by icons, appear in text.
For a list of abbreviations used in this document, refer to “Appendix D - Abbreviations” on page 60.
INSPECTING SHIPMENT
Upon receipt of the equipment:
•Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in
transit, immediately report the extent of damage to the transportation company and to ADC DSL Systems,
Inc. Order replacement equipment, if necessary.
•Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short
or irregular, contact ADC DSL Systems, Inc. as described in “Appendix C - Product Support” on page 59. If
you must store the equipment for a prolonged period, store the equipment in its original container.
Notes contain information about special circumstances.
Cautions indicate the possibility of personal injury or equipment damage.
The Electrostatic Discharge (ESD) symbol indicates that a device or assembly is susceptible to
damage from electrostatic discharge.
YENTER
CTRL ESC

Inspecting Shipment LTPH-UM-1253-01
iv October 15, 2003 H4TU-C-231 List 5A

LTPH-UM-1253-01 Table of Contents
H4TU-C-231 List 5A October 15, 2003 v
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Features..............................................................................................................................................1
Applications.......................................................................................................................................2
Front Panel __________________________________________________________________________ 3
Installation___________________________________________________________________________ 6
Verification ........................................................................................................................................7
Provisioning__________________________________________________________________________ 8
Accessing the Provisioning Screens ..................................................................................................8
Connecting to a Maintenance Terminal...............................................................................8
Logon Screen.......................................................................................................................8
Provisioning Tasks...........................................................................................................................11
Setting Date and Time.......................................................................................................11
Setting Circuit ID Numbers...............................................................................................12
Configuring the System.....................................................................................................13
Resetting to Factory Defaults ............................................................................................19
Clearing the History, Alarm, and Event Log Screens .......................................................20
Monitoring System Activity and Performance ____________________________________________ 22
Using the Monitor Screen to View System Activity........................................................................22
Using the Performance Screens to View Performance Data............................................................24
Performance History at the DS1 Interface.........................................................................24
Performance History at the HDSL4 Interface ...................................................................27
Using the Performance Screens to View Alarm Data......................................................................30
Alarm History at the DS1 Interface...................................................................................30
Alarm History at the HDSL4 Interface..............................................................................33
Using the System Event Log to Track Events .................................................................................34
Event Log Messages..........................................................................................................35
Origin Tags........................................................................................................................36
Using the Report Menu....................................................................................................................37
Testing _____________________________________________________________________________ 39
System Alarms.................................................................................................................................39
Alarm Option for Digital Loop Carrier (DLC) Feed.........................................................40
Remote LOS and AIS Response........................................................................................41
OCT55 Test Pattern with AMI Line Code.......................................................................................41
Loopback Operation.........................................................................................................................42
Generic Loopback Commands ..........................................................................................43
A3LB and A5LB Loopback Commands ...........................................................................43

Table of Contents LTPH-UM-1253-01
vi October 15, 2003 H4TU-C-231 List 5A
Loopback Test Procedures .............................................................................................................. 44
General Troubleshooting Tips .......................................................................................... 44
Setting the Loopback Time-Out Option............................................................................ 44
GNLB Test Procedures..................................................................................................... 44
A3LB Test Procedures...................................................................................................... 47
A5LB Test Procedures...................................................................................................... 48
Loopback Testing Using a Maintenance Terminal........................................................... 50
Loopback Testing Using Remote Unit Front-Panel Pushbuttons..................................... 50
Programmable DSX-1 Test Jacks ..................................................................................... 50
Appendix A - Specifications____________________________________________________________ 52
Power Consumption ........................................................................................................................ 53
Maximum Power Dissipation.......................................................................................................... 53
Maximum Current Drain................................................................................................................. 54
Loop Attenuation, Insertion Loss, and Reach ................................................................................. 54
H4TU-C Card-Edge Connector....................................................................................................... 55
Fuse Alarm........................................................................................................................ 55
........................................................................................................................................... 55
Craft Port......................................................................................................................................... 56
Appendix B - Functional Operation _____________________________________________________ 57
Timing ............................................................................................................................................. 57
Ground Fault Detection................................................................................................................... 57
Spectrum Issues............................................................................................................................... 58
Compatibility................................................................................................................................... 58
Appendix C - Product Support _________________________________________________________ 59
Appendix D - Abbreviations ___________________________________________________________ 60
Certification and Warranty______________________________________________ Inside Back Cover

LTPH-UM-1253-01 List of Figures
H4TU-C-231 List 5A October 15, 2003 vii
LIST OF FIGURES
1.H4TU-C Front Panel ........................................................................................................................................3
2.Installing an H4TU-C into a Shelf....................................................................................................................6
3.Logon Screen....................................................................................................................................................9
4.Config Menu - Date and Time........................................................................................................................11
5.Inventory Screen.............................................................................................................................................12
6.Config Menu...................................................................................................................................................13
7.Config Menu - Standard Options (defaults shown)........................................................................................14
8.Config Menu - ADC Options (defaults shown) .............................................................................................14
9.Config Menu - Set Factory Defaults ..............................................................................................................19
10.Config Menu - Master Clear...........................................................................................................................21
11.Monitor Screen - Active Loopback with Alarms...........................................................................................22
12.H4TU-R DS1 31-Day Performance History ..................................................................................................24
13.H4TU-C DS1 48-Hour Performance History.................................................................................................25
14.H4TU-R DS1 25-Hour Performance History.................................................................................................25
15.H4TU-R DS1 Current Statistics.....................................................................................................................26
16.H4TU-C DS1 Current Statistics.....................................................................................................................26
17.H4TU-C HDSL4 31-Day Performance History.............................................................................................28
18.H4TU-C HDSL4 48-Hour Performance History ...........................................................................................28
19.H4TU-C HDSL4 25-Hour Performance History ...........................................................................................29
20.H4TU-C HDSL4 Current Statistics................................................................................................................29
21.H4TU-C DS1 Alarm History Screen..............................................................................................................31
22.H4TU-R DS1 Alarm History Screen..............................................................................................................31
23.H4TU-C HDSL4 Alarm History Screen ........................................................................................................33
24.System Event Log...........................................................................................................................................34
25.Report Menu - Full Report.............................................................................................................................37
26.H4TU-R LOS and AIS Response Priorities...................................................................................................41
27.Loopback Summary........................................................................................................................................42
28.Loopback Modes............................................................................................................................................46
29.DSX-1 Testing Towards Customer................................................................................................................51
30.DSX-1 Testing Towards Network..................................................................................................................51
31.DSX-1 Test Jack Screen.................................................................................................................................51
32.H4TU-C Card-Edge Connector......................................................................................................................55
33.RS-232 Craft Port Pinouts..............................................................................................................................56
34.H4TU-C Block Diagram ................................................................................................................................57

List of Tables LTPH-UM-1253-01
viii October 15, 2003 H4TU-C-231 List 5A
LIST OF TABLES
1.Front-Panel Description................................................................................................................................... 4
2.LED Status and Functions ............................................................................................................................... 5
3.Navigational Keys for the Maintenance Terminal Screens ............................................................................. 9
4. Logon Screen Menus .................................................................................................................................... 10
5.H4TU-C Standard Config Menu Options...................................................................................................... 15
6.H4TU-C ADC Config Menu Options............................................................................................................ 16
7.DS1 and DSX-1 24-Hour PM Threshold....................................................................................................... 18
8.Monitor Screen Descriptions ......................................................................................................................... 23
9.Error Acronyms Used on the DS1 Performance History Screens ................................................................. 27
10.Error Acronyms Used on the HDSL4 Performance History Screens............................................................ 30
11.DS1 Alarm Descriptions................................................................................................................................ 32
12.HDSL4 Alarm Descriptions........................................................................................................................... 33
13.Event Log Entry Messages............................................................................................................................ 35
14.Origin Tags .................................................................................................................................................... 36
15.Report Types.................................................................................................................................................. 38
16.System Alarms Displayed on Alarm History Screens................................................................................... 39
17.Summary of HDSL4 Generic Loopback Codes and Activation Methods..................................................... 45
18.A3LB Addressable Repeater Loopback Commands ..................................................................................... 47
19.A5LB Addressable Repeater Loopback Commands ..................................................................................... 48
20.H4TU-C Power Parameters ........................................................................................................................... 53
21.HDSL4 Reach Chart...................................................................................................................................... 54

LTPH-UM-1253-01 Overview
H4TU-C-231 List 5A October 15, 2003 1
OVERVIEW
The H4TU-C-231 List 5A (H4TU-C) line unit is the Central Office (CO) side of a T1 transmission system. The
four-wire HDSL4 product family is based on the HDSL4 standard ANSI T1.418 Issue 2.
The H4TU-C, when used with an H4TU-R remote unit, transmits a 1.544 Mbps payload a maximum distance of
12 kft. over two unconditioned copper pairs. The H4TU-C supports three powered spans to further expand reach.
The H4TU-Cisdesigned to mount in standard 220 mechanics shelves. For a list of compatible shelves, see
“Compatibility” on page 58.
FEATURES
Standard features include:
•HDSL4 transmission features
—Lightning and power cross-protection on HDSL4 interfaces
—Full-duplex HDSL4 transmission on four wire at 1.568 Mbps
—Ultra-low wander (Stratum 1 compliant)
—Loop reversal detection on HDSL4 loop
—Spectrum compatibility with Asymmetric Digital Subscriber Line (ADSL) services
—Doubler (H4D) support for up to three spans
—Sources sealing current when connected to any locally powered H4TU-R
•Front-panel features
—DSX-1 access jacks
—Seven Status Light Emitting Diodes (LEDs) for system status reporting
—RS-232 craft port for connection to a maintenance terminal
•Digital Data Service (DDS) latching loopback
•Maintenance screens to provision, monitor, and troubleshoot HDSL4 system
—DS1 and HDSL4 performance monitoring
—Loop attenuation and insertion loss reporting
—Non-volatile storage of performance monitoring parameters
—Performance Report Messaging (PRM) support for Supplemental PRM (SPRM) and Network PRM
(NPRM) at the H4TU-R
—Payload (PL) and HDSL Generic (HG) loopback source identification
—Margin Alarm (MAL) threshold
—Report menu option for downloading status and performance monitoring data to a file
—Remote provisioning through TL1 FDL
This line unit requires HiGain Management Unit (HMU) firmware version 3.2 or later (L9 or L7A)
for full feature TL1 management.

Overview LTPH-UM-1253-01
2 October 15, 2003 H4TU-C-231 List 5A
•Fractional T1 (FT1) maintenance
•Configuration options
—Selectable DSX-1 pre-equalizer
—Bipolar Violation Transparency (BPVT) options
—Bit Error Rate (BER) alarm
—Power Back Off Network (PBON) and Power Back Off Customer (PBOC) options for configuring
HDSL4 transmit power levels
—Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm
—Remote provisioning
—Concurrent detection of all loopback activation codes
•Additional Loopback Timeout (LBTO) settings of 8 hours and 24 hours
APPLICATIONS
HDSL4 systems provide a cost-effective, easy-to-deploy method for delivering T1 High Capacity Digital Service
(HCDS) over two pair of wires. HDSL4 systems support a multitude of network connections.
•The service is deployed over two unconditioned, non-loaded copper pairs at 784 kbps per loop.
•Conventional, inline DS1 repeaters are no longer required.
•Cable pair conditioning, pair separation, and bridged tap removal are not required.
For Span 1, each loop has no more than 47 dB of insertion loss (INSL) at 196 kHz, with driving and terminating
impedances of 135Ω; for Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz. In
general, HDSL4 systems:
•Operate effectively in the same cable binder group with other HDSL4 lines, HDSL, T1, ADSL, SDSL, POTS,
DDS, and other transmission schemes.
•Can be used with customers requiring DS1 service on a temporary or permanent basis.
•Provide a means of quickly deploying service in advance of fiber-optic transmission systems.
DS1 is used throughout this document to refer to either the remote unit’s DS1 interface or the
line unit’s DSX-1 interface.