ADC HiGain HLU-200 User manual

HiGain
HiGain
USER MANUAL
AHDSL
HLU200 L2D
LOOP
FAIL
HDSL
R
S
2
3
2
HLU-200 List 2D Line Unit
Litespan-2000 Channel Bank
Product Catalog: 150-200-124-02
CLEI: SLILNSYA

150-200-124-02, Issue 2
ii February 10, 1999 HLU-200 List 2D
Revision History of This Manual
To order copies of this document, use document catalog number 150-200-124-02.
Copyright
February 10, 1999
© 1999 ADC DSL Systems, Inc. All rights reserved.
Trademark Information
ADC is a registered trademark of ADC Telecommunications, Inc.HiGain isa registered trademark ofADC 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 practice 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
1February 10, 1999 Initial release
2April 12, 2002 ADC Rebranding

150-200-124-02, Issue 2 Using This Manual
HLU-200 List 2D February 10, 1999 iii
USING THIS MANUAL
Three types of messages, identified by icons, appear in text:
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 Product Support on page 44. 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.

Inspecting Shipment 150-200-124-02, Issue 2
iv February 10, 1999 HLU-200 List 2D

150-200-124-02, Issue 2 Table of Contents
HLU-200 List 2D February 10, 1999 v
TABLE OF CONTENTS
Overview ____________________________________________________________________________ 1
Features..............................................................................................................................................1
Applications .......................................................................................................................................1
Power Parameters...............................................................................................................................3
Compatibility ________________________________________________________________________ 3
Product Description ___________________________________________________________________ 4
Functional Description_________________________________________________________________ 5
Installation___________________________________________________________________________ 8
Installing the HLU-200 ......................................................................................................................8
Removing the HLU-200.....................................................................................................................8
Managing the HLU-200 ________________________________________________________________ 9
Administration .................................................................................................................................13
Accessing the AHDSL Unit through Litecraft ..................................................................13
Cross Connection...............................................................................................................16
In Service and Out of Service Provisioning ......................................................................17
System Inventory...............................................................................................................18
Provisioning .....................................................................................................................................19
Setting User Options..........................................................................................................19
Parameter Threshold..........................................................................................................21
Monitoring .......................................................................................................................................23
T1 Performance Monitoring..............................................................................................23
Graphs................................................................................................................................24
HDSL Performance Monitoring ........................................................................................24
Alarms ...............................................................................................................................26
Loopback Operation _________________________________________________________________ 27
Testing Loopbacks...........................................................................................................................29
Test Loop Access.............................................................................................................................30
GNLB Loopback Test Procedures ______________________________________________________ 30
Notes on Non-doubler GNLB Loopback Test Procedures: .............................................................31
A1LB, A2LB, and A5LB Test Procedures ......................................................................................31
A3LB and A4LB Test Procedures ...................................................................................................34
Appendix A - Technical Specifications___________________________________________________ 35
Appendix B - Connector & HDSL Cable Loopback Assignment _____________________________ 36
Card-Edge Connector.......................................................................................................................36
Input/Output Cabling .......................................................................................................................37
Appendix C - Product Support _________________________________________________________ 44

Table of Contents 150-200-124-02, Issue 2
vi February 10, 1999 HLU-200 List 2D
Appendix D - Abbreviations ___________________________________________________________ 45
Certification and Warranty________________________________________________Inside Back Cover

150-200-124-02, Issue 2 List of Figures
HLU-200 List 2D February 10, 1999 vii
LIST OF FIGURES
1. HLU-200 List 2D Typical Applications.....................................................................................................................2
2. HLU-200 List 2D Front Panel ....................................................................................................................................4
3. HLU-200 List 2D Block Diagram ..............................................................................................................................6
4. HDSL Line Voltage Switch S1...................................................................................................................................7
5. Installing the HLU-200 into a Litespan 2000 CBA....................................................................................................8
6. Litecraft Login Screen1 ..............................................................................................................................................3
7. Network Map Screen ................................................................................................................................................14
8. Node Screen..............................................................................................................................................................14
9. Channel Bank Screen with AHDSL Circuit Selected...............................................................................................15
10. Cross Connection Diagram.....................................................................................................................................17
11. Litespan Equipment Edit Screen.............................................................................................................................17
12. Provisioning Edit Facilities Screen.........................................................................................................................18
13. System Inventory Screen ........................................................................................................................................18
14. HDSL/T1 Provisioning Screen 1 ............................................................................................................................19
15. HDSL/T1 Provisioning Screen 2 ............................................................................................................................20
16. HDSL/T1 Provisioning Screen 3 ............................................................................................................................20
17. HDSL/T1 Provisioning Screen 4 ............................................................................................................................21
18. T1 ES Threshold Screen .........................................................................................................................................22
19. HDSL ES Threshold Screen ...................................................................................................................................22
20. T1 PM Screen .........................................................................................................................................................23
21. T1 UASL Graph......................................................................................................................................................24
22. HDSL PM Screen ...................................................................................................................................................25
23. AHDSL Alarm Screen............................................................................................................................................26
24. HLU-200 List 2D Non-doubler Loopback Configuration......................................................................................27
25. System Loopback Screen........................................................................................................................................29
26. HLU-200 List 2D Card-Edge Connectors ..............................................................................................................36

List of Figures 150-200-124-02, Issue 2
viii February 10, 1999 HLU-200 List 2D

150-200-124-02, Issue 2 List of Tables
HLU-200 List 2D February 10, 1999 ix
LIST OF TABLES
1. HLU-200 List 2D Power Parameters..........................................................................................................................3
2. Front-Panel Features...................................................................................................................................................4
3. HLU-200 List 2D Status LED Descriptions...............................................................................................................5
4. AHDSL-TL1/Litecraft System Commands..............................................................................................................10
5. AHDSL-TL1/Litecraft Provisioning Commands .....................................................................................................11
6. HiGain System Option Settings................................................................................................................................12
7. Channel Bank Screen Color Codes...........................................................................................................................16
8. HLU-200 List 2D Alarms to Litespan Processor......................................................................................................26
9. Loopback Mnemonics...............................................................................................................................................29
10. Addressable 1, 2, 5 (A1LB, A2LB, A5LB) Repeater Loopback Commands.........................................................33
11. Addressable 3 and 4 (A3LB and A4LB) Repeater Loopback Commands.............................................................34
12. Wideband and Narrowband HDSL Loop Cable Assignment.................................................................................37
13. CBA Wideband Cabling/HDSL Loop Assignments ..............................................................................................37
14. Odd CBA Narrowband Cabling (Last Pair Unassigned)/
HDSL Loop Assignments .......................................................................................................................39
15. Even CBA Narrowband Cabling (First Pair Unassigned)/HDSL Loop Assignments............................................40
16. ONU-96 Wideband Cabling/HDSL Loop Assignments.........................................................................................41
17. ONU-96 Narrowband Cabling/HDSL Loop Assignments .....................................................................................42
18. ONU-48 Wideband and Narrowband Cabling/HDSL Loop Assignments.............................................................43

List of Tables 150-200-124-02, Issue 2
x February 10, 1999 HLU-200 List 2D

150-200-124-02, Issue 2 Overview
HLU-200 List 2D February 10, 1999 1
OVERVIEW
The HiGain®HLU-200 List 2D is a HiGain Line Unit (HLU) that plugs into any channel unit slot of a
Litespan®2000 Channel Bank Assembly (CBA). Within Litespan, it is called an Asynchronous High-bit-rate
Digital Subscriber Line (AHDSL) channel unit. When plugged into the CBA and paired with a HiGain Remote
Unit (such as an HRU-412), the HLU-200 provides an AHDSL interface capable of 1.544 Mbps transmission on
two unconditioned copper pairs over the full Carrier Service Area (CSA) range. (This includes loops of up to
12,000 feet of 24 American Wire Gauge [AWG] or 9,000 feet of 26 AWG, including bridged taps.)
FEATURES
The HLU-200 List 2D has the following features:
•Lightning and power-cross protection on HDSL interfaces
•784 kbps full-duplex 2 Binary, 1 Quaternary (2B1Q) HDSL transmission on two pairs
•Front panel status Light Emitting Diodes (LEDs)
•Margin threshold alarm
•Low power consumption
•Compatible with the Litespan 2000 integrated management system called Litecraft™ Pro.
APPLICATIONS
The HiGain system provides a cost-effective, easy-to-deploy method for delivering T1 high capacityservice over
two unconditioned, non-loaded copper pairs. Conventional in-line T1 repeaters, cable pair conditioning, pair
separation, and bridged tap removal are not required. For typical HLU-200 applications see Figure 1 on page 2.
General guidelines require the HDSL loop to have less than a 35 dB loss at 196 kHz with 135Ωdriving and
terminating impedances and to otherwise comply with CSA guidelines. The HiGain system operates with any
number of other T1, Plain Old Telephone Service (POTS), Digital Data Service (DDS), or other HiGain systems
sharing the same cable binder group. HiGain systems can be used for customers requiring Digital Signal,
Level 1 (DS-1) service on a temporary or permanent basis. The HiGain system also provides a means of quickly
deploying service in advance of fiber-optic transmission systems. With the HiGain system, service can be
provided within hours. Fiber optic systems can then be installed over time to be cut in when convenient to do so.
After fiber optic installation and connection, the HiGain system can be easily removed and utilized elsewhere.
The HLU-200 operates as a channel card within an Alcatel Litespan 2000 Channel Bank. The Litespan 2000
system consists of a Central Office (CO) bank connected to a remote bank over an OC3 fiber link. Each bank has
slots for 56 channel plug-in cards. Typically, the HLU-200 List 2D is installed in the remote bank where it is used
to transmit a T1 payload to a remote HRU over two unconditioned HDSL cable pairs (with or without doublers).
This HLU-200 is equivalent to an AT1U channel unit (used to transmit a T1 payload to a remote location over
conventional T1 spans).
The HiGain system uses High-bit-rate Digital Subscriber Line (HDSL) transmission technology
as recommended by Bellcore TA-TSY-001210 and complies with the requirements found in
TR-TSY-000063 (Network Equipment Building System [NEBS] generic equipment requirements)
and TR-TSY-000499 Transport System Generic Requirements (TSGR).

Overview 150-200-124-02, Issue 2
2 February 10, 1999 HLU-200 List 2D
The HLU-200 List 2D is compatible with Litespan 2000 system software (Release 8.2 and later) and the TL1
based Litecraft Integrator ManagementSystem; the unit must bemaintained, provisioned, and monitored fromthe
Litecraft/TL1 since it cannot be managed from the front panel RS-232 craft port. (The front panel RS-232 craft
port is used only for factory testing.) The HLU-200 List 2D works asynchronously with the Litespan bank timing.
The HLU-200 can be cross-connected to another HLU-200 or to any asynchronous T1 channel unit including an
HLU-200 List 1D (AHT1U), within its own channel bank or a distant channel bank (as shown in Figure 1). In this
arrangement, test access at either the remote or local ends can be accomplished by use of ADS1U and AT1U line
cards. These point-to-point dedicated circuits are initiated by issuing the standard TL1-based cross-connect
commands or Litecraft commands to the Maintenance and Test Interface (MTI) card, which identifies the
HLU-200 List 2D as an AHDSL plug.
Figure 1. HLU-200 List 2D Typical Applications
Figure 1 shows a typical AHDSL application. As shown in Circuit A, the HRU can be placed up to 3000 feet from
the network for extra range. This requires an external Network Interface Device (NID) tobe placedat theNetwork
Interface (NI). The HRU must have the SmartJack (SMJK) Loopback (LPBK) option (NIDLPBK) set to Disable
for these external NID applications. Since the Litecraft Version 2.0 management system does not recognize
doublers, it cannot be used to provision, maintain or monitor the HLU-200 List 2D doubler applications.

150-200-124-02, Issue 2 Compatibility
HLU-200 List 2D February 10, 1999 3
POWER PARAMETERS
Table 1 lists the HLU-200 List 2D current drain on the 4 CBA power supplies, its power consumption, and its
dissipation. The same parameters are shown for two other higher power CBA plugs (the AT1U and REBS) for
comparison.
The maximum power dissipation measures the power that is converted into heat build up within the unit. It
contributes to the total heat generated in the space around the unit.
The maximum power consumption is the total power that the HLU-200 List 2D consumes or drawsfrom the CBA
power buses. This parameter is needed when the Litespan 2000 is battery powered. It determines the battery
capacity required to maintain an 8-hour standby battery reserve for emergency situations.
COMPATIBILITY
This practice describes the functionality of the HLU-200 List 2D with Version 2.0 of Litecraft. This version of
Litecraft has several deficiencies which are identified in the following pages of this document:
•DISC-JACK command in Table 4 on page 10
•Margin Threshold on page 21
•“HDSL Performance Monitoring” on page 24
•Release Loopback Test command on page 30
The HLU-200 List 2D is compatible with the following channel bank management systems:
•Alcatel Litespan 2000, Version 8.2 or later
•Litecraft, Version 2.0 or later
Table 1. HLU-200 List 2D Power Parameters
Power Bus HLU-200 I-CPE(a)
Off
(a) Customer Premise Equipment (current option in the HRU)
HLU-200 I-CPE
On HLU-200 HRU Local Power AT1U REBS
+5v 590 mA 590 mA 590 mA 147 mA 155 mA
-5V 66 mA 66 mA 66 mA 0 mA 191 mA
-48V SW Battery 133 mA 200 mA 0 mA 60 mA 0 mA
-48V Talk Battery 0 mA 0 mA 0 mA 0 mA 109 mA
Power Consumption 9.33 W 12.6 W 2.9 W 3.6 W 7 W
Power Dissipation 4.23 W 4.88 W 2.9 W 3.6 W 6.3 W

Product Description 150-200-124-02, Issue 2
4 February 10, 1999 HLU-200 List 2D
PRODUCT DESCRIPTION
Figure 2 shows thefrontpanel of the HLU-200 List 2Dcard.The front-panel components are described in Table 2.
Figure 2. HLU-200 List 2D Front Panel
Table 2. Front-Panel Features
Features Function
Status LEDs Loop, Fail, and HDSL (see Table 3 for status LED descriptions)
RS-232 craft port Communication port for factory test only.
Retaining latch Retains the card in the shelf. Pull down to remove the card from the shelf.
HLU200 L2D
LOOP
Status LEDs
Craft port
Retaining latch
FAIL
HDSL
R
S
2
3
2
AHDSL

150-200-124-02, Issue 2 Functional Description
HLU-200 List 2D February 10, 1999 5
Table 3 describes the functions of the Status LEDs on the front panel.
FUNCTIONAL DESCRIPTION
The HiGain system uses ADC’s 2B1Q HDSL transceivers to establish two full-duplex 784 kbps data channels
between the HLU-200 and an HRU remote unit. This provides a total capacity of 1.568 Mbps between the two
units.
A block diagram of the HLU-200 List 2D is shown in Figure 3 on page 6. The Litespan gate array circuit controls
the exchange of the 1.544 Mbps data payload between the backplane and the “2180” T1 framer. The 2180
processes the T1 data and reorganizes Super Frame (SF) or Extended Super Frame (ESF) format. It also performs
Alternate Mark Inversion (AMI) and Bipolar with 8-zero Bit Substitution (B8ZS) coding and decoding and hands
the T1 payload off to the HDSL framer.
The header port J1 is used to download the boot loader to the Litespan microprocessor during factory testing. This
provisions the microprocessor to communicate to the CBA and allows it to be recognized and initialized by the
bank’s common control equipment.
Table 3. HLU-200 List 2D Status LED Descriptions
LED Status Description
Loop Flashes Green whenever any of the HLU-200 List 2D loopbacks are in
effect (see “Loopback Operation” on page 27).
Fail Flashes Red and is controlled by the bank. It lights when the HLU-200
is first plugged into the bank and remains on until the bank has
finished its program download and hand-shake with the HLU-200. It
alsolights whenever there is a service-affecting failure within the bank.
HDSL A tri-colored LED that:
•Flashes Green during HDSL sync acquisition on either HDSL
loop
•Flashes Red for any of the alarm conditions described in
Table 8 on page 26
•Is steady Green when both HDSL loops are in sync and no
minor alarms exist
•Is steady Red if the on-board 48 V fuse opens
•Is steady Yellow during self-test

Functional Description 150-200-124-02, Issue 2
6 February 10, 1999 HLU-200 List 2D
The Test Loop feature allows metallic test access to the two facility cable pairs as shown in Figure 3.
Figure 3. HLU-200 List 2D Block Diagram
The HLU-200 List 2D contains an HDSL framer that generates two parallel 784 kbps data streams. The data
streams contain HDSL frames that are nominally 4704 bits (6 milliseconds) in length. The HDSL frames contain
a 14-bit Frame Sync Word (FSW), 6-bit Cyclic Redundancy Check (CRC), 21-bit operations channel and DS-1
payload. The DS-1 stream is separated into two parallel streams that comprise the payloads of the 2 HDSL loops.
TheHLU-200 List 2D allocates theDS0 time slots according totheversionofHRU towhich itis connected. Older
version HRUs require the odd DS0 time slots allocated to Loop 1 and the even DS0 time slots to Loop 2. Newer
versions allocate DS0 time slots 1 through 12 to Loop 1, and time slots 13 through 24 to Loop 2. The 8 kbps frame
bits of the DS-1 stream are included on both HDSL channels. The two formatted HDSL channels are passed to
the HDSL transceivers which convert them to 2B1Q format for application to the HDSL lines. The 2B1Q line code
is designed to operate in a full duplex mode on unconditioned pairs. The transceiver echo canceler and adaptive
equalizer receive the signal from the remote end in the presence of impairments and noise on the copper pairs.
The received HDSL data is processed by the transceivers and then passed on to the HLU-200 framer module. The
framer provides frame synchronization for each ofthe two HDSL loops. The framer and HDSL transceivers work
under control of the HLU-200 microprocessor and compensate for data inversions caused by Tip-Ring reversals
and for loop swaps caused by pair reversals. The HiGain system allows for Tip-Ring or pair reversals, but does
not tolerate split pairs. By synchronizing to the Frame Sync Word (FSW) of each loop, the framer can reconstruct
the original 1.544 Mbps DS-1 stream from the payloads of the two HDSL loops. The CRC fields on the HDSL
streams allow the HLU-200 List 2D to determine if errors are present on the loop due to excessive impairments
on the HDSL pairs, or due to excessive impulse or crosstalk noise.
The framer removes data link messages from the HDSL loops and passes them to the microprocessor. This
mechanism allows operations messages and status to be exchanged between the HLU-200 List 2D and the
HRU-412 remote unit.
The reconstructed HDSL data is buffered in a First-in-First-Out (FIFO) buffer within the framer. A frequency
synthesizer inconjunction with the FIFO regulates the output bit rate and reconstructs the DS-1 clock atthe exact
rate received from the remote end. The HiGain system operates at DS-1 rates of 1.544 Mbps with up to ±200 bps
of offset. The HLU-200 List 2D line power supply converts the -48 Vdc battery to a -130 Vdc which provides
simplex power feed on the two HDSL line interfaces.

150-200-124-02, Issue 2 Functional Description
HLU-200 List 2D February 10, 1999 7
Thesymmetry of the HDSL line powering voltage can be set bytheS1 switch, located on the printedcircuit board,
as shown in Figure 4.
The factory default setting is UNI (-). It sets the HDSL line voltage to 0V on Loop 2 and to -130V on Loop 1. This
setting keeps the HDSL cable pair voltages at or below ground potential, thereby avoiding corrosion problems
caused by cable voltages more positive than ground.
The bipolar selection BIP (±) sets the HDSL line voltage to +65V on Loop 2 and -65V on Loop 1. This setting
reduces the maximum ground referenced voltage, but applies positive voltage to Loop 2, which could accelerate
corrosion.
The line voltage power supply, used for both options, is ground referenced, but also ground isolated by 200 kΩ.
This ground isolation reduces problems due to induced noise currents and large surge voltages, which are ground
referenced. It also reduces ground fault currents, which improves the product’s safety. The safety issue thus
depends solely on the differential voltage across Loop 1 and Loop 2, and is independent of the S1s setting.
Figure 4. HDSL Line Voltage Switch S1
S1
Component Side
UNI
BIP

Installation 150-200-124-02, Issue 2
8 February 10, 1999 HLU-200 List 2D
INSTALLATION
Thissection explainshow to install the HLU-200 card into a compatible CBA.The HLU-200 mountsin a Litespan
2000 CBA.
INSTALLING THE HLU-200
To install the HLU-200, follow these steps:
1Hold the HLU-200 along the edges of the card. Avoid contact with connectors and chips.
2Slide the card into the guides for the desired slot.
Figure 5. Installing the HLU-200 into a Litespan 2000 CBA
3Push the card all the way into the CBA slot until the edge connector of the card becomes seated into the slot
connector on the backplane of the CBA.
REMOVING THE HLU-200
If the HLU-200 List 2D is removed from a slot, it must not be reinserted for at least 15 seconds.
Reinserting it sooner may temporarily lock the HLU-200 List 2D into an unstable state.
CO Shelf
HLU-431
HiGainLINEUNIT
HLU-200

150-200-124-02, Issue 2 Managing the HLU-200
HLU-200 List 2D February 10, 1999 9
The dormantstate occurs because the rapid re-insertion inhibitstheCBA's ability to detect the unit’s removal. The
CBA must find the slot empty for three consecutive polling inquiries before it declares the slot empty. If the unit
is removed and re-inserted before three polling periods occur, the CBA does not detect the removal and the unit
enters a dormant state. This dormant state remains until the CBA performs an audit. Such an audit can take up to
an hour to occur if the CBA is fully loaded.
MANAGING THE HLU-200
TheAHDSL unit can only be managedfromeitherof the two Litespan 2000integratedmanagement systems:TL1
or Litecraft.
Access to Litespan management systems can be established by connecting a maintenance terminal, dial-up
modem, or X.25 packet network directly to the RS-232 connector on either the front panel of the MTI board or
the Fuse and Alarm panel. For more information, refer to the TL1 Command Set Reference or Litecraft Reference
Practice.
Version 8.x of Litespan introduces a new management interface called Litecraft. Litecraft is Windows-based
Graphic User Interface (GUI) based on standard TL1 Litespan system commands. The various Litecraft (TL1)
commands that apply to the AHDSL line unit fall into the following categories:
•Administration: used to remove or restore the AHDSL unit to service, perform cross connectors, place
equipment and facilities in and out of service (IS/OOS) and system inventory.
•Provisioning: used to set all of the AHDSL user options and parameter threshold values.
•Monitoring: used to clear and retrieve Performance Monitoring (PM) data and also to retrieve alarms.
•Testing: used to initiate and terminate loopbacks and to disconnect the HDSL pairs for testing by the
Maintenance Test Access Unit (MTAU).
The TL1 and Litecraft related commands, for all but the Provisioning category, are shown in
Table 4 on page 10.
Table 5 on page 11 lists HiGain Provisioning options supported by the AHDSL and relates these options to their
corresponding Litecraft/TL1 commands. Table 6 on page 12 defines the HiGain system options supported by the
HLU-200.
This dormant state is easy to detect since a dormant unit's Fail LED remains on and does not
change it’s state within 15 seconds after insertion, as a normal unit does.
This AHDSL unit cannot be managed from the front panel RS-232 craft port. This port is for
factory testing purposes only.

Managing the HLU-200 150-200-124-02, Issue 2
10 February 10, 1999 HLU-200 List 2D
Table 4. AHDSL-TL1/Litecraft System Commands
Category TL1 Commands Litecraft Parameters Litecraft Choices HiGain Options HiGain Choices
Testing OPR-LPBK-HDSL LOCN/R NEND Loop Up NLOC
OPR-LPBK-HDSL LOCN/C NEND Loop Up CLOC
OPR-LPBK-HDSL LOCN/R FEND Loop Up NREM
OPR-LPBK-HDSL LOCN/C FEND Loop Up CREM
RLS-LPBK-HDSL LOCN/R NEND Loop Down NLOC
RLS-LPBK-HDSL LOCN/C NEND Loop Down CLOC
RLS-LPBK-HDSL LOCN/R FEND Loop Down NREM
RLS-LPBK-HDSL LOCN/C FEND Loop Down CREM
CONN-JACK-T1 Disconnects Loop 1 and Loop 2 from the HLU-200 for testing cable pairs
DISC-JACK-T1 Reconnects Loop1 and Loop 2 pairs to the HLU-200
Administration RMV-HDSL Removes the AHDSL from service (OOS)
RST-HDSL Restores the AHDSL to service (IS)
ENT-EQPT Enter or assign a unit to a slot position
DLT-EQPT Delete or unassign a unit to a slot position
ENT-CRS-T1 Initiate a cross connection
DLT-CRS-T1 Delete a cross connection
ED-T1 or ED-HDSL Edits the equipment
Monitoring INIT-REG-HDSL Clears the PM and sets all values to 0
RTRV-PM-HDSL Retrieves PM data
RTRV-ALRM-HDSL Retrieves alarms