ADC H2TU-C-388 HiGain User manual

USER MANUAL
HiGain H2TU-C-388 List 7F Line Unit
Product Catalog: H2TU-C-388-7F
CLEI: VACJLK6E

LTPH-UM-1214-02
ii July 21, 2003 H2TU-C-388 List 7F
Revision History of This Manual
To order copies of this manual, use document catalog number LTPH-UM-1214-02. (Copies of this publication
can be downloaded from the ADC website at www.adc.com. To order a hard copy, please contact your sales
representative.)
Copyright
July 21, 2003
© 2003 ADC DSL Systems, 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 manual 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 privateto 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.
Revision Release Date Revisions Made
1February 7, 2003 Initial release.
2July 21, 2003 Added BERT and ground dectection.

LTPH-UM-1214-02 Using This Manual
H2TU-C-388 List 7F July 21, 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 E - Abbreviations” on page 69.
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 D - Product Support” on page 68. 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-1214-02
iv July 21, 2003 H2TU-C-388 List 7F

LTPH-UM-1214-02 Table of Contents
H2TU-C-388 List 7F July 21, 2003 v
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Features..............................................................................................................................................1
Applications .......................................................................................................................................2
Front Panel __________________________________________________________________________ 3
Installation___________________________________________________________________________ 7
Verification ........................................................................................................................................8
Verification without an H2TU-R Remote Unit...................................................................8
Verification with an H2TU-R Remote Unit ........................................................................8
Provisioning__________________________________________________________________________ 9
Displaying System Parameter Settings..............................................................................................9
Accessing the Provisioning Screens ..................................................................................................9
Connecting to a Maintenance Terminal...............................................................................9
Logon Screen.....................................................................................................................10
Provisioning Tasks...........................................................................................................................12
Setting Date and Time.......................................................................................................12
Setting Circuit ID Numbers...............................................................................................13
Configuring the System.....................................................................................................13
Resetting to Factory Defaults ............................................................................................24
Clearing the History, Alarm, and Event Log Screens .......................................................24
Monitoring System Activity and Performance ____________________________________________ 26
Performance Monitoring from the H2TU-R....................................................................................26
Payload Retrieval of Margin and Pulse Attenuation Parameters.....................................................27
Using the Monitor Screen to View System Activity........................................................................28
Using the Performance Screens to View Performance Data............................................................30
Performance History at the DS1 Interface.........................................................................31
Blockage Indicator Statistics at the H2TU-R DS1 and HDSL2 Interface.........................34
Performance History at the HDSL2 Interface ...................................................................36
Using the Performance Screens to View Alarm Data......................................................................38
Alarm History at the DS1 Interface...................................................................................38
Alarm History at the HDSL2 Interface..............................................................................40
Using the System Event Log to Track Events .................................................................................41
Event Log Messages..........................................................................................................42
Origin Tags........................................................................................................................43
Using the Sectionalized Event Log to Isolate Trouble ....................................................................44
Using the Report Menu....................................................................................................................46
Testing _____________________________________________________________________________ 48

Table of Contents LTPH-UM-1214-02
vi July 21, 2003 H2TU-C-388 List 7F
System Alarms................................................................................................................................. 48
Alarm Option for the Digital Loop Carrier Feed.............................................................. 49
Retiring System Alarms.................................................................................................... 49
Remote LOS and AIS Response....................................................................................... 50
OCT55 Test Pattern with AMI Line Code...................................................................................... 50
Loopback Operation........................................................................................................................ 51
Generic Loopback Commands........................................................................................................ 52
Special Loopback Commands......................................................................................................... 53
Manual Loopback Session............................................................................................................... 54
Setting the Loopback Time-Out Option............................................................................ 54
Activating Manual Loopback Mode................................................................................. 54
Loopback Test Procedures .............................................................................................................. 55
General Troubleshooting Tips .......................................................................................... 55
GNLB Test Procedures..................................................................................................... 55
A1LB, A2LB, and A5LB Test Procedures....................................................................... 56
A3LB and A4LB Test Procedures .................................................................................... 59
Testing with H2TU-C BERT Generator.......................................................................................... 60
Testing with H2TU-R BERT Generator.......................................................................................... 61
Appendix A - Specifications____________________________________________________________ 62
Power Consumption ........................................................................................................................ 63
Maximum Power Dissipation.......................................................................................................... 63
Maximum Current Drain................................................................................................................. 63
Loop Attenuation............................................................................................................................. 64
H2TU-C Card-Edge Connector....................................................................................................... 64
Fuse Alarm........................................................................................................................ 65
Craft Port......................................................................................................................................... 65
Appendix B - Functional Operation _____________________________________________________ 66
Timing ............................................................................................................................................. 66
Ground Fault Detection................................................................................................................... 66
Appendix C - Compatibility____________________________________________________________ 67
Appendix D - Product Support _________________________________________________________ 68
Appendix E - Abbreviations____________________________________________________________ 69
Certification and Warranty______________________________________________ Inside Back Cover

LTPH-UM-1214-02 List of Figures
H2TU-C-388 List 7F July 21, 2003 vii
LIST OF FIGURES
1. H2TU-C Front Panel ......................................................................................................................................3
2. Installing the H2TU-C into a Shelf ................................................................................................................7
3. Logon Screen................................................................................................................................................10
4. Config Menu - Date and Time .....................................................................................................................12
5. Inventory Screen...........................................................................................................................................13
6. Config Menu.................................................................................................................................................13
7. Config Menu - Standard Options (defaults shown).....................................................................................14
8. Config Menu - ADC Options (defaults shown) ...........................................................................................15
9. Config Menu - Set to Factory Defaults ........................................................................................................24
10. Config Menu - Master Clear ........................................................................................................................24
11. Sectionalized Analysis of the DS1 and HDSL2 Interface............................................................................26
12. Monitor Screen - BERT Status.....................................................................................................................28
13. Monitor Screen - ARMed.............................................................................................................................29
14. H2TU-R DS1 31-Day Performance History................................................................................................31
15. H2TU-C DS1 48-Hour Performance History...............................................................................................32
16. H2TU-R DS1 25-Hour Performance History...............................................................................................32
17. H2TU-R DS1 Current Statistics...................................................................................................................33
18. H2TU-C DS1 Current Statistics...................................................................................................................33
19. H2TU-R DS1 Blockage Indicator History Screen.......................................................................................35
20. H2TU-R HDSL2 Blockage Indicator History Screen..................................................................................35
21. H2TU-C HDSL2 31-Day Performance History...........................................................................................36
22. H2TU-C HDSL2 48-Hour Performance History .........................................................................................36
23. H2TU-C HDSL2 25-Hour Performance History .........................................................................................37
24. H2TU-C HDSL2 Current Statistics..............................................................................................................37
25. H2TU-C DS1 Alarm History Screen............................................................................................................38
26. H2TU-R DS1 Alarm History Screen............................................................................................................38
27. H2TU-C HDSL2 Alarm History Screen ......................................................................................................40
28. H2TU-C System Event Log .........................................................................................................................41
29. H2TU-R System Event Log .........................................................................................................................41
30. Sectionalized Event Log Screen...................................................................................................................44
31. Sectionalized Analysis of the DS1 Interface................................................................................................45
32. Report Menu - Full Report...........................................................................................................................46
33. H2TU-R LOS and AIS Response Priorities.................................................................................................50
34. Loopback Summary .....................................................................................................................................51
35. Loopback Modes..........................................................................................................................................56
36. H2TU-C BERT Generator Screen................................................................................................................60

List of Figures LTPH-UM-1214-02
viii July 21, 2003 H2TU-C-388 List 7F
37. H2TU-R BERT Generator Screen............................................................................................................... 61
38. H2TU-C Card-Edge Connector................................................................................................................... 64
39. RS-232 Craft Port Pinouts........................................................................................................................... 65
40. Block Diagram............................................................................................................................................ 66

LTPH-UM-1214-02 List of Tables
H2TU-C-388 List 7F July 21, 2003 ix
LIST OF TABLES
1. Front-Panel Description .................................................................................................................................4
2. Front-Panel Display Messages.......................................................................................................................4
3. Navigational Keys for the Maintenance Terminal Screens..........................................................................10
4. Logon Screen Menus...................................................................................................................................11
5. H2TU-C Standard Config Menu Options ....................................................................................................16
6. H2TU-C ADC Config Menu Options ..........................................................................................................17
7. DS1/DSX-1 24-Hour PM Threshold............................................................................................................20
8. Response to H2TU-R DS1 Frame Conversion Options...............................................................................21
9. Extended SuperFrame Format......................................................................................................................21
10. SuperFrame Format......................................................................................................................................22
11. Bit Error Indication of Margin and Pulse Attenuation Parameters..............................................................28
12. Monitor Screen Descriptions........................................................................................................................29
13. Error Acronyms Used on the DS1 Performance History Screens................................................................33
14. Error Acronyms Used on the HDSL2 Performance History Screens ..........................................................37
15. DS1 Alarm Descriptions ..............................................................................................................................39
16. HDSL2 Alarm Descriptions.........................................................................................................................40
17. Event Log Entry Messages...........................................................................................................................42
18. Origin Tags...................................................................................................................................................43
19. Sectionalized Event Definitions...................................................................................................................45
20. Report Types ................................................................................................................................................47
21. Front-Panel System Alarms Summary........................................................................................................48
22. Summary of HDSL2 Loopback Codes and Activation Methods.................................................................52
23. Addressable Repeater Loopback Commands (A1LB, A2LB, A5LB).........................................................58
24. Addressable Repeater Loopback Commands (A3LB and A4LB) ...............................................................59
25. BERT Signal Generator Option Settings......................................................................................................60
26. H2TU-C Power Parameters..........................................................................................................................63
27. HDSL2 Reach Chart.....................................................................................................................................64

List of Tables LTPH-UM-1214-02
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LTPH-UM-1214-02 Overview
H2TU-C-388 List 7F July 21, 2003 1
OVERVIEW
The H2TU-C-388 List 7F (H2TU-C) line unit is the Central Office (CO) side of a T1 transmission system. The
HiGain HDSL2 product family is fully compliant with the HDSL2 standard ANSI T1.418.
The H2TU-C, when used with an H2TU-R remote unit, transmits a 1.544 Mbps payload on one unconditioned
copper pair over the full Carrier Service Area (CSA)range. The CSA includes loops up to 12,000 feet of 24 AWG
wire or 9,000 feet of 26 AWG wire, including bridged taps.
The H2TU-C is designed to mount in Double Dual Module Plus (DDM+) shelves. For a list ofcompatible shelves,
see “Appendix C - Compatibility” on page 67.
FEATURES
Standard features include:
•HDSL2 transmission features
–Enhanced lightning protection
–Power cross-protection on HDSL2 interfaces
–Full-duplex HDSL2 transmission on one pair at 1.552 Mbps
–Ultra-low wander (Stratum 1 compliant)
–Grounded loop detection on High-bit-rate Digital Subscriber Line 2 (HDSL2)
•Front-panel features
–Four character status display
–DSX-1 signal access
–Status Light Emitting Diode (LED)
–RS-232 craft port for maintenance terminal connection
–MODE and LBK pushbuttons for system settings display and loopback activation
–Dual loopback commands
•Maintenance screens to provision, monitor, and troubleshoot HDSL2 system
–DS1 and HDSL2 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 H2TU-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
–16-bit inband retrieval of margin and pulse attenuation
–Remote provisioning through TL1 FDL or 11-bit inband commands
–Remote access and control of H2TU-R test signal generator
–Remote Frame Ground Status report on maintenance screen and TL1 command

Overview LTPH-UM-1214-02
2 July 21, 2003 H2TU-C-388 List 7F
–Bit-Error-Rate Test (BERT) Generator
•Configuration options
–Selectable DSX-1 pre-equalizer
–Bipolar Violation Transparency (BPVT) options
–Bit Error Rate (BER) alarm
–Power Back Off - Customer (PBOC) and Power Back Off - Network (PBON) options for configuring
power output levels
–Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm option
–Selectable loopback activation codes
•Additional Loopback Timeout (LBTO) settings of 8 hours and 24 hours
APPLICATIONS
HiGain HDSL2 systems provide a cost-effective, easy-to-deploy method for delivering T1 High Capacity Digital
Service (HCDS) over a single copper pair. HiGain HDSL2 systems support a multitude of network connections
and system models.
•The service is deployed over one unconditioned, non-loaded copper pair.
•Conventional inline DS1 repeaters are no longer required.
•Cable pair conditioning, pair separation and bridged tap removal are not required.
Each loop has no more than 35 dB of insertion loss (INSL) at 196 kHz, with driving and terminating impedances
of 135Ω. In general, HiGain HDSL2 systems:
•Operate effectively inthe same cable binder group with other HDSL2 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.

LTPH-UM-1214-02 Front Panel
H2TU-C-388 List 7F July 21, 2003 3
FRONT PANEL
Figure 1 shows the H2TU-C front panel. Table 1 on page 4 describes the front-panel components. For pinout
diagrams of the H2TU-C card-edge connector and craft port, refer to “Appendix A - Specifications” on page 62.
Figure 1. H2TU-C Front Panel
List number
Front-panel display
Loopback pushbutton
Mode pushbutton
Status LED
DSX-1 access jacks
Craft port CLEI/ECI bar code label
(inside handle)
Extraction handle
H0557-A

Front Panel LTPH-UM-1214-02
4 July 21, 2003 H2TU-C-388 List 7F
Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loopback,
or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first
message with a value or current configuration setting.
Table 1. Front-Panel Description
Front-Panel Feature Function
Front-panel display Displays four-character status, provisioning, and alarm system messages. The front-panel display
illuminates when power is initially applied. To conserve power the display only remains on for
5 minutes. Using the MODE or LBK pushbuttons reactivates the display and restarts the 5-minute
timer. Refer to Table 2 on page 4 for a listing of the four-character messages.
List number List number identifies the list number of the H2TU-C.
MODE and LBK pushbuttons Permits user options to be monitored and modified without the need of a maintenance terminal. Used
to initiate all HiGain loopbacks and test states as well as to display DSX-1 line parameters and line
unit identity.
Status LED The status LED can report the following conditions:
Off Line power is off.
Green Normal operation.
Flashing red (at turnup) HDSL2 acquisition.
Red Fuse alarm.
Flashing red System alarm.
Yellow An H2TU-C Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in effect.
(While performing the CREM or NLOC, the status LED remains green.)
Flashing yellow H2TU-C is in an Armed state.
CLEI and ECI bar code label Provides the human-readable Common Language Equipment Identifier (CLEI) code number and the
Equipment Catalog Item (ECI) bar code number.
DSX-1 access jacks
BRG Provides non-intrusive bridging jack access to (RCV) and from (XMT) the HDSL2 span at the
DSX-1 interface. Allows the two DS1 payloads to be monitored.
DB-9 craft port (RS-232) Provides bidirectional communication between the unit and an external terminal to allow
configuration and performance monitoring through the maintenance terminal screens.
Extraction handle Used to insert and extract the H2TU-C.
Table 2. Front-Panel Display Messages
Message Full Name Description
ALARM MESSAGES
ACO Alarm Cutoff A system alarm has occurred, and has been retired to an ACO condition
by pressing the LBK pushbutton on the H2TU-C front panel. The front
panel displays the following messages in the order given: ACO, ALARM,
and then the alarm condition. The Status LED lights green.
ALRM Alarm Condition Exists A system alarm condition is in effect.
DBER DS1 Bit Error Rate A system DS1 BER alarm is in effect and remains in effect until cleared.
HBER HDSL2 Block Error Rate A system HDSL2 Block Error Rate alarm is in effect.
LA Loop Attenuation Indicates that the attenuation on the HDSL2 loop has exceeded the
maximum threshold value.
LAIS Line Alarm Indication Signal Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H2TU-C DS1 input or output ports.
LLOS Line (Unit) Loss of Signal Indicates that no signal is detected at the DSX-1 input to the H2TU-C.
Causes a system alarm.
LOSW Loss of Sync Word Indicates that the HDSL2 loop has lost synchronization.
MAL Margin Alarm The margin on HDSL2 loop has dropped below the threshold (0 to 15
dB) as set by the operator.

LTPH-UM-1214-02 Front Panel
H2TU-C-388 List 7F July 21, 2003 5
PWR FEED GND Power Feed Ground The HDSL2 loop is grounded.
PWR FEED OPEN Power Feed Open Indicates a line power open condition.
PWR FEED SHRT Power Feed Short Indicates a short between the Tip and Ring of the HDSL2 pair.
PRMF Performance Report Messaging -
Far End H2TU-R PRM-FE BER threshold has been exceeded.
PRMN Performance Report Messaging -
Near End H2TU-R PRM-NE BER threshold has been exceeded.
RAIS Remote Alarm Indication Signal Indicates an AIS (unframed all ones) pattern is being received or
transmitted at the H2TU-R DS1 input or output ports.
RLOS Remote (Unit) Loss of Signal Indicates that no signal is detected at the DS1 input to the H2TU-R.
Causes a system alarm.
RRAI Remote RAI—Remote Alarm
Indication at the H2TU-R (Net
signal has errors.)
Indicates an RAI alarm (yellow) from the CPE with errors from the line
unit or network.
LOF Loss of Frame The DS1 input does not contain the ESF or SF frame-pattern setting of
the FRMG option.
TRCI Transmit RAI-CI—TX RAI-CI
Indication - Customer Installation
at the H2TU-R (Net signal does not
have errors.)
Upon reception of an RAI (yellow) from the CPE, the H2TU-R sends RAI-CI
toward the network if the network signal received at the H2TU-R is clear. If
the network signal is impaired (LOS, AIS, or Loss of Frame [LOF]), then the
RAI is automatically passed on to the network.
SPNnSpan Number Accompanies the LOSW alarm and identifies the span where the LOSW
alarm occurred.
TUC Transmission Unit Central Office Accompanies the DBER, HBER, MAL, and LA alarm and indicates that the
alarm has occurred at the H2TU-C central office unit.
TUR Transmission Unit Remote End Accompanies the DBER, HBER, MAL, and LA alarm and indicates that the
alarm has occurred at the H2TU-R remote unit.
Continued
Table 2. Front-Panel Display Messages (Continued)
Message Full Name Description

Front Panel LTPH-UM-1214-02
6 July 21, 2003 H2TU-C-388 List 7F
LOOPBACK MESSAGES
CLOC Customer Local Loopback Signal from customer is looped back to the customer at the H2TU-R.
COLB Central Office Loopback Dual loopback at the H2TU-C.
CREM Customer Remote Loopback Signal from customer is looped back to the customer at H2TU-C.
NLOC Network Local Loopback DSX-1 signal is looped back to the network at the H2TU-C.
NREM Network Remote Loopback DSX-1 signal is looped back to the network at the H2TU-R.
RULB Remote Unit Loopback Dual loopback at the H2TU-R.
SMJK Remote SmartJack Loopback DSX-1 signal is looped back to the network at the H2TU-R SmartJack
module.
DIAGNOSTIC MESSAGES
A = xx Maximum Loop Attenuation The Attenuation (A) message appears followed by xx, where xx is the
loop attenuation of the longest (maximum loss) span, measured in dB.
ACQ Acquisition The multiplexers of the H2TU-C and H2TU-R (or the H2TU-C and first
regenerator) are trying to establish synchronization over the HDSL2 loop
of Span 1.
ARM HiGain System Armed Armed to respond to Intelligent Repeater Loop (ILR) codes.
BAD RT? No Response from H2TU-R The H2TU-C receives no response from the H2TU-R and all HDSL2 loop
conditions are normal. Therefore, the integrity of the H2TU-R or the
HDSL2 loop is questionable.
BAD RGND H2TU-R Frame Ground Signal The H2TU-R does not have a frame ground connection.
FERR Framing Bit Error Occurred Framing bit error has occurred at H2TU-C DSX-1 input.
HES HDSL2 CRC Error H2TU-C HDSL2 Loop Cyclical Redundancy Check (CRC) error.
LBPV Local Bipolar Violation A bipolar violation has been received at the DSX-1 input to the H2TU-C.
M=xx HDSL2 Loop Margin Indicates the power of the received HDSL2 signal relative to noise (signal
to noise with respect to 21.5 dB). Any value of 6 dB or greater is
adequate for reliable system operation.
PWR FEED OFF Power Feed Off HDSL2 span power has been turned off by setting the PWFD option to
off, or HDSL2 span power has been turned off by use of the A2LB
Intelligent Office Repeater (IOR) Power Down code.
PWR FEED ON Power Feed On Indicates that the HDSL2 loop is not grounded or shorted.
SIG Signaling The transceivers of the H2TU-C and H2TU-R are trying to establish
contact with each other over the HDSL2 loop of Span 1.
SYSTEM INFORMATION MESSAGES(a)
VER x.xx Software Version Number The software version number of the H2TU-C.
LIST xx List Number The list number of the H2TU-C.
FRM xxxx Frame: SF, ESF, UNFR, or AUTO Defines the type of frame pattern being received from the DSX-1:
SuperFrame (SF), Extended SuperFrame (ESF), Unframed (UNFR), or
AUTO.
CODE xxxx Line Code: AMI or B8ZS The DS1 line code setting: Alternate Mark Inversion (AMI) or Bipolar with
8-Zero Substitution (B8ZS).
LATT xx Loop Attenuation The current loop attenuation threshold setting measured in decibels.
MARG xx Margin The current margin threshold setting measured in decibels.
(a) System information messages are displayed in Scroll Mode. To scroll through the messages, press the MODE pushbutton for
3 or more seconds. After system information messages scroll, the front panel displays the line card options (see Table 5 on
page 16 and Table 6 on page 17).
Table 2. Front-Panel Display Messages (Continued)
Message Full Name Description

LTPH-UM-1214-02 Installation
H2TU-C-388 List 7F July 21, 2003 7
INSTALLATION
Figure 2. Installing the H2TU-C into a Shelf
1Align the H2TU-C with the shelf card-slot guides and slide the unit in.
2Push on the H2TU-C front panel to secure the unit in the shelf.
Upon receipt of the equipment, 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.
When installing an H2TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching
components on the circuit board.
To comply with the intrabuilding wiring requirements of GR-1089 CORE, Section 4.5.9, the
shields of the ABAM-type cables that connect the H2TU-C DSX-1 output ports to the
cross-connect panel must be grounded at both ends.
CO Shelf
H2TU-C
H0202-B

Installation LTPH-UM-1214-02
8 July 21, 2003 H2TU-C-388 List 7F
VERIFICATION
Once the H2TU-C is installed, verify that it is operating properly. To do this, monitor the following:
•Status LED
•Status messages reported by the front-panel display (Table 2 on page 4 lists the status messages).
Verification without an H2TU-R Remote Unit
If there is no H2TU-R remote unit installed:
1Verify that the H2TU-C powers up. The front-panel display illuminates and reports status messages. (Table 2
on page 4 lists the status messages.)
2Verify that the H2TU-C attempts to communicate with a remote unit (status LED flashes red). Even if a
remote unit is not present, the following events should continue to occur:
•The front-panel display reports various four-character status messages.
•The H2TU-C attempts communication with a remote unit.
Verification with an H2TU-R Remote Unit
If an H2TU-R remote unit has been installed:
1Verify that the H2TU-C powers up. (The front-panel display illuminates and reports various status messages.)
2Verify that the H2TU-C attempts to communicate with the remote unit (status LED flashes red). One of the
following then occurs:
•The H2TU-C detects and synchronizes with the remote unit. If no DS1 signal is being applied at either
end, then the appropriate DS1 alarms (LLOS or RLOS) are reported on thefront-panel display. The status
LED flashes red until the DS1 signal is applied at both ends. The status LED then turns to a steady green
and normal margin messages are reported on the front-panel display.
•If the remote unit is not detected, the H2TU-C reports four-character status messages. The H2TU-C
attempts communication again and reports four-character status messages. The H2TU-C repeats this
cycle until a remote unit is detected.
For information regarding turn-up instructions, see the Help menu and select Turn-up Aid.

LTPH-UM-1214-02 Provisioning
H2TU-C-388 List 7F July 21, 2003 9
PROVISIONING
DISPLAYING SYSTEM PARAMETER SETTINGS
To scroll through the current settings of all system parameters, press the MODE pushbutton for 3 or more seconds.
The H2TU-C displays the following parameters:
•Software version number
•List number
•Type of frame pattern received from the DSX-1
•Line code of the signal received from the DSX-1
•All user-configured parameter settings
•Loop attenuation threshold setting
•Margin alarm threshold setting
ACCESSING THE PROVISIONING SCREENS
Connecting to a Maintenance Terminal
The craft port on the front panel allows you to connect the H2TU-C to a maintenance terminal, such as an ASCII
terminal or PC running a terminal emulation program. Once connected to a maintenance terminal, you can access
the maintenance, provisioning, and performance screens.
To connect to a maintenance terminal:
1Connect the cable to the RS-232 craft port on the H2TU-C front panel (Figure 1 on page 3).
2Connect the other end of the cable to the serial port on the maintenance terminal.
3Start a terminal emulation program such as Procomm (emulating a VT100 terminal).
4Configure the maintenance terminal for the following communication settings:
•9600 baud
•No parity
•8 data bits
•1 stop bit
•Hardware flow control set to OFF
5If necessary, press + to refresh the HDSL2 logon screen.
CTRL R

Provisioning LTPH-UM-1214-02
10 July 21, 2003 H2TU-C-388 List 7F
Logon Screen
The maintenance terminal screens allow you to monitor, provision, and troubleshoot an HDSL2 system.
To select a menu from the logon screen shown in Figure 3, do one of the following:
•Press the underlined letter of the menu.
•Use the arrow keys to select the menu, then press .
Table 3 below summarizes the navigational keys. They are also listed in the onscreen Help menu. Table 4 on
page 11 describes the logon screen menus.
Figure 3. Logon Screen
Most VT100 emulation programs support a print screen option. For Windows-based programs,
such as Procomm or HyperTerminal, see the Help menu for instructions.
Table 3. Navigational Keys for the Maintenance Terminal Screens
Key (a)
(a) Legacy management units require use of control keys instead of arrow keys.
Function
Cycle through selections.
Activate the current setting or choice, or display a menu.
or (VT100 only) Return to the parent menu.
or + Select the submenu or item above the current one, or return to the previous menu.
or + Select the submenu or item below the current one.
or + Select the menu or item to the right of the current one.
or + Select the menu or item to the left of the current one, or return to the previous menu.
+ Refresh the screen.
← → ENTER
SPACEBAR
ENTER
ESC F11
↑CTRL E
↓CTRL X
→CTRL D
←CTRL S
CTRL R
Circuit ID Date and Time Logon Device System Status
Menu bar