ADC H2TU-C-388 User Manual

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HiGain

HDSL2

H 2 T U

• 3 8 8

SETUP

MODE SEL

USER MANUAL

H2TU-C-388 List 1 Line Unit

Part Number: 150-2406-01 CLEI: VACHKW0C

STATUS

232

DCE

152-388-100-02, Issue 2

Revision History of This Manual

Revision Release Date Revision s Ma de

01 June 6, 2000 Initial release. 02 Jaunary 18, 2002 ADC rebranding

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 practice are used for identification purposes only and may be trademarks or regi stered trademarks of their respect ive companies.

Disclaimer of Liability

Information containe d in this documen t is company private to ADC DSL Systems, Inc., and shal l not be modified , used, copied , reproduced or discl osed in whole or in part without the wr itten consent of AD C.

Contents herein are current as o f th e da te of publication. ADC reserves the right to c h an ge th e con te nts wi thout prio r no tic e . 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.

ii June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Using This Manual

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: + .

Y ENTER

CTRL ESC

• Items you select are in bold.

• Three types of messages, identified by icons, appear in text.

Notes contain information about special circumstances.

Cautions indicate the possibility of personal injury or equipment damage.

The Electrostatic Discharge (ESD) symbol indicate s that a device or as sembly is susc eptible to damage from electrostatic discharge.

For a list of abbreviations used in this document, refer to “Appendix E - Abbreviations” on page 55.

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 accu rate shipmen t of each listed item. If the shipment is short

or irregular, contact ADC DSL Systems, Inc. as described in “Appen dix D - Product Suppo rt” on page 54. If you must store the equipment for a prolonged period, store the equipment in its original container.

H2TU-C-388 List 1 June 6, 2000 iii

Inspecting Shipment 152-388-100-02, Issue 2

iv June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Table of Contents

TABLE OF CONTENTS

Overview ____________________________________________________________________________ 1

Features..............................................................................................................................................1

Compatibility .....................................................................................................................................2

Applications.......................................................................................................................................2

Front Panel __________________________________________________________________________ 3 Installation___________________________________________________________________________ 7

Verification ........................................................................................................................................8

Verification without a Downstream Device........................................................................8

Verification with a Downstream Device.............................................................................8

Provisioning__________________________________________________________________________ 9

Using the MODE and SEL Buttons...................................................................................................9

Setting Options through MODE and SEL...........................................................................9

Resetting to Factory Default Values..................................................................................10

Displaying System Parameter Settings..............................................................................10

Loopback Modes ...............................................................................................................10

Using a Maintenance Terminal........................................................................................................10

Connecting to a Maintenance Terminal.............................................................................10

The Logon Screen..............................................................................................................11

Provisioning Tasks......................................... ............................................. .....................................13

Setting Date and Time.......................................................................................................13

Setting Circuit ID Numbers...............................................................................................14

Configuring the System.....................................................................................................15

Clearing the History, Alarm, and Event Log Screens .......................................................21

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 HDSL2 Interface...................................................................28

Using the Performance Screens to View Alarm Data......................................................................30

Alarm History at the DS1 Interface...................................................................................31

Alarm History at the HDSL2 Interface..............................................................................33

Using the Event Log to Track System Events.................................................................................34

H2TU-C-388 List 1 June 6, 2000 v

Table of Contents 152-388-100-02, Issue 2

Testing _____________________________________________________________________________ 36

Front-Panel System Alarms............................................................................................................. 36

Alarm Option for DLC Feed............................................................................................. 37

Retiring System Alarms.................................................................................................... 37

Remote LOS and AIS Response....................................................................................... 38

OCT55 Test Pattern with AMI Line Code...................................................................................... 38

Loopback Operation........................................................................................................................ 39

Generic Loopback Commands.......................................................................................... 39

Special Loopback Commands........................................................................................... 41

Manual Loopback Session................................................................................................42

Loopback Test Procedures ..............................................................................................................43

General Troubleshooting Tips .......................................................................................... 43

GNLB Test Procedures................. ...... ............................................. ...... ........................... 43

A1LB, A2LB, and A5LB Test Procedures....................................................................... 45

A3LB and A4LB Test Procedures....................................................................................47

Appendix A - Specifications____________________________________________________________ 48

Power Consumption ...................................................................... .................................................. 49

Maximum Power Dissipation.......................................................................................................... 49

Maximum Current Drain................................................................................................................. 49

Loop Attenuation.................................................................................................. ........................... 50

HiGain Line Unit Card-Edge Connector.........................................................................................50

Network Management Control Bus.................................................................................. 50

Fuse Alarm........................................................................................................................51

Craft Port......................................................................................................................................... 51

Appendix B - Functional Operation _____________________________________________________ 52

Timing ............................................................................................................................................. 52

Ground Fault Detect........................................................................................................................ 52

Appendix C - Compatibility____________________________________ ________________________ 53 Appendix D - Product Support _________________________________________________________ 54 Appendix E - Abbreviations____________________________________________________________55 Certification and Warranty _____________________________________________ Inside Back Cover

vi June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 List of Figures

LIST OF FIGURES

1. H2TU-C-388 List 1 Front Panel....................................................................................................................3

2. Installing the H2TU-C-388 into a Shelf........................................................................................................7

3. Logon Screen ...............................................................................................................................................12

4. Configuration Menu - Date and Time.........................................................................................................13

5. Inventory Menu ............................. ............................................. .................................................................14

6. Configuration Menu ....................................................................................................................................15

7. Configuration Menu - Standard Options (Defaults Shown)........................................................................16

8. Configuration Menu - ADC Options (Defaults Shown)..............................................................................16

9. Configuration Menu - Reset to Factory Defaults........................................................................................20

10. Master Clear ................................................................................................................................................21

11. Monitor Screen - Active Loopback with Alarms........................................................................................22

12. H2TU-R DS1 31-Day Performance History...............................................................................................24

13. H2TU-R DS1 48-Hour Performance History..............................................................................................25

14. H2TU-C DS1 25-Hour Performance History..............................................................................................25

15. H2TU-R DS1 Current Statistics..................................................................................................................26

16. H2TU-C DS1 Current Statistics..................................................................................................................26

17. H2TU-C HDSL2 31-Day Performance History..........................................................................................28

18. H2TU-C HDSL2 48-Hour Performance History.........................................................................................28

19. H2TU-C HDSL2 25-Hour Performance History.........................................................................................29

20. H2TU-C HDSL2 Current Statistics.............................................................................................................29

21. H2TU-C DS1 Alarm History Screen...........................................................................................................31

22. H2TU-R DS1 Alarm History Screen...........................................................................................................31

23. H2TU-C HDSL2 Alarm History Screen .....................................................................................................33

24. System Event Log........................................................................................................................................34

25. H2TU-R LOS and AIS Response Priorities................................................................................................38

26. Loopback Summary.....................................................................................................................................39

27. Loopback Modes.........................................................................................................................................44

28. HiGain Line Unit Card-Edge Connector.....................................................................................................50

29. 210-to-DB-9 Adapter...................................................................................................................................51

30. H2TU-C-388 List 1 Block Diagram............................................................................................................52

H2TU-C-388 List 1 June 6, 2000 vii

List of Tables 152-388-100-02, Issue 2

LIST OF TABLES

1. Front-Panel Description................................................................................................................................ 4

2. Front-Panel Display Messages...................................................................................................................... 5

3. Navigational Keys for the HiGain Maintenance Terminal Screens............................................................11

4. Logon Screen Menus .................................................................................................................................. 12

5. HiGain Line Unit List 1 Standard Config Screen Options ......................................................................... 17

6. HiGain Line Unit List 1 ADC Config Screen Options...............................................................................18

7. DS1/DSX-1 24-hour PM Threshold ...........................................................................................................20

8. Monitor Screen Descriptions ...................................................................................................................... 23

9. Acronyms Used on the DS1 Performance History Screens........................................................................ 27

10. Acronyms Used on the HDSL2 Performance History Screens................................................................... 30

11. DS1 Alarm Descriptions............................................................................................................................. 32

12. HDSL2 Alarm Descriptions........................................................................................................................33

13. Event Log Entry Messages List.................................................................................................................. 35

14. Front-Panel System Alarms Summary.......................................................................................................36

15. Summary of HiGain Loopback Codes and Activation Methods ................................................................ 40

16. Addressable Repeater Loopback Commands (A1LB, A2LB, A5LB)........................................................ 45

17. Addressable Repeater Loopback Commands (A3LB and A4LB).............................................................. 47

18. H2TU-C-388 Power Parameters.................................................... ...... ....................................................... 49

19. HDSL2 Cable Attenuation Chart................................................................................................................ 50

viii June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Overview

OVERVIEW

The HiGain® product family from ADC® is the industry’s first practical implementations of High- bit-rate Digital Subscriber Line 2 (HDSL2). ADC products are fully compliant with the HDSL2 standard. Providing full-rate T1 access using just a single copper pair, HDSL2 is a cost-effective so lution that offers an open architecture. The open architecture inherent in HDSL2 guarantees interoperability, allowing simple and economic accommodation of network growth. HiGain uses t he industry’s first HDSL2 chipset (ANSI T1/E1.4 compliant) developed by ADC.

HiGain HDSL2 products provide 1.552 Mbps transmission on one unconditioned copper pair over the full Carrier Service Area (CSA) range. The CSA includes loops up to 12,000 feet of 24 American Wire Gauge (AWG) wire or 9,000 fee t of 26 AWG wire, includi ng bridged t aps.

FEATURES

The HiGain Line Unit line unit is the Central Office (CO) side of a T1 transmission system.

• HDSL2 transmission features – Lightning and 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 provisioning features – Four-character status display – Status Light Emitting Diodes (LEDs) – Bantam 210 jack port for RS-232 connection to a maintenance terminal – MODE and SEL switches

• HiGain HDSL2 maintenance screens for inventory, provisioning, and troubleshooting – DS1 and HDSL2 performance monitoring – Non-volatile alarm histories

• Configuration options – Selectable DS1 pre-equalizer – Bipolar Violation Transparency (BPVT) options – Bit Error Rate (BER) alarm – Loss of Signal/Alarm Indicator Signal (LOS/AIS) payload alarm option – Remote provisioning – Selectable loopback activation codes

• Compatible with Double Dual Module Plus (DDM+) high-density shelves

• Payload (PL) and HiGain Generic (HG) loopback source identification

• Network Ma nagement and Administration (N MA) interface

• Margin Alarm (MAL) alarm

H2TU-C-388 List 1 June 6, 2000 1

Overview 152-388-100-02, Issue 2

DS1 is used throughout this document to refer to either the remote unit’s DS1 interface or the line unit’s DSX-1 interface.

COMPATIBILITY

The H2TU-C-388 List 1 is designed to mo unt in DDM+ high-density shelves. For a list of compatible shelves see

“Appendix C - Compatibility” on pag e 53.

APPLICATIONS

HiGain systems provide a cost-effective, easy-to-deploy method for deliv ering DS1 High Capacity Digital Service (HCDS) over a single copper pair. HiGain systems support a multitude of network connections and system models.

• The service is deployed over one unconditioned, non-loaded copper pair.

• With HiGain, conventional, inline DS1 repeaters are no longer required.

• Cable pair conditioning, pair separation, and bridged tap removal are not re quir ed.

Each loop has no more than 35 dB of loss at 196 kHz, with driving and terminating impedances of 135 general, HiGain systems:

• Operate effectively in the same cable binder group with other HDSL2 lines, HDSL, DS1, ADSL, SDSL,

POTS, Digital Data Service (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.

Ω. In

2 June 6, 200 0 H2TU-C-388 Li st 1

152-388-100-02, Issue 2 Front Panel

FRONT PANEL

Figure 1 shows the H2TU-C-388 List 1 fron t panel. Tabl e 1 on page 4 describes the front-panel comp onents. For

a list of front-panel display messages, refer to Table 2 on page 5. For pinout diagrams of the H2TU-C card-edge connector and craft port, refer to “Appendix A - Specifications” on page 48 .

HiGain

HDSL2

Front-panel display

MODE and SEL system option buttons

H 2 T U

•

C 3 8 8

SETUP

MODE SEL

STATUS

Craft port

232

DCE

Figure 1. H2TU-C-388 List 1 Front Panel

List number

CLEI and ECI barcode label

Status LED

Configuration number

H2TU-C-388 List 1 June 6, 2000 3

Front Panel 152-388-100-02, Issue 2

Table 1. Front-Panel Description

Front-Panel Feature Function

Front-panel displ a y 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 SEL buttons reactivates the display and restarts the 5-minute timer. Refer to Table 2 on page 5 for a listing of t he f our-character messages.

MODE and SEL system option buttons

Permits user options to be monitored and modified without the need of a main tenance terminal. Used to initiate all HiGain loopbacks and to disp lay DSX-1 line parameters and line unit identity.

Status LED The status LED can repor t the following cond itions:

Off Line power is off. Green Normal operation. Red Fuse alarm. Flashing red HDSL2 acquisition or system alarm. Yellow An H2TU-C-388 List 1 Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC)

is in effect.

Flashing yellow H2TU-C-388 List 1 is in an Armed (ARM) state.

Craft port (RS-232) Provides bidirectional communication between the unit and an external te rminal to allow

configuratio n and performance monitoring through the Maintenance Terminal sc re e ns .

CLEI and ECI bar code label Provide s the hu ma n -r e ad a ble Com m on La ng ua ge Eq uipment Identifier (CLEI) code number and

the Equipment Ca talog Item (ECI) bar code number. List number Identifies the list number of the H2TU-C-388 List 1. Configuration Number For some products the configuration number may cont ain either a standalone two or t hree-digit

configuration number or a five- or six-digit warranty configur ation number as follows:

Digit 1 - Last digit of shipment year Digits 2 and 3 - Shipment month Digits 4, 5, and 6 - Configuration number

The configuration number identifies the version of the product. New configuration numbers usually

accompany changes in the last two characters of the CLEI code.

The configuration number is found on a small label attached to the unit. It is the last two numbers

(following the x) of a 13-character pa rt n umber. For example: 150-1234-01-x01.

4 June 6, 200 0 H2TU-C-388 Li st 1

152-388-100-02, Issue 2 Front Panel

Table 2 lists the front-panel display messages. The four-character display reports the code of an alarm, loop back,

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 2. Front-Panel Display Messages

Message Full Name Description

SYSTEM ALARM MESSAGES

ACO Alarm Cutoff A system alarm has occurred and has been retired to an ACO condition

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 al arm is in effect. LA Loop Attenuation Indicates that the attenuation on the HDSL2 loo p has exceeded the

LAIS Local Alarm Indication Signal Indicates an AIS (all ones) pattern is being transmitted from th e local

LLOS Local Loss of Sig na l Indicates that no signal is detected at th e DSX-1 input to the H2TU-C.

LOSW Loss of Sync Word Indicates that the HDSL2 loop has lost synchronization. LRAI Line RAI Indicates an RAI alarm (yellow) from the CPE with an error-free signal

MAL Margin Alarm The margin on HDSL2 loop has dropped below the threshold (0 to 15

PWR FEED GND Ground The HDSL2 loop is grounded. PWR FEED OPEN Open Indicates a line power open condition. PWR FEED SHRT Short Indicates a short between th e Tip and Ring of the HDSL2 pair. PRMF Perfor mance Report Messaging -

Far End

PRMN Performance Report Messag ing -

Near End

RAIS Remote Alarm Indication Signal Indicates an AIS (all o nes) pattern is being trans mitted from the re mote

RLOS Remote Loss of Signal Indicates that no signal is detected at the DS1 input to the H2TU-R.

RRAI Remote RAI Indicates an RAI alarm (yellow) from th e CPE with errors from the line

TUC Tran smission Unit Central Off ice Accompanies the HBER, MAL, and LA alarm and indicates that the alarm

TUR Transmission Unit Remote End Accompanies the HBER, MAL, and LA alarm and indicates that the alarm

by pressing the SEL butto n on the H2T U-C front panel.

maximum threshold value.

DS1 output port.

Causes a system alarm.

from the line unit or network.

dB) as set by the operator.

H2TU-R PRM-FE BER threshold ha s been exceeded.

H2TU-R PRM-NE BER threshold has been ex ceeded.

DS1 output port.

Causes a system alarm.

unit or network.

has occurred at the H2TU-C central office unit.

has occurred at the H2TU-R remote unit.

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 th e customer at the 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.

Continued

H2TU-C-388 List 1 June 6, 2000 5

Front Panel 152-388-100-02, Issue 2

Table 2. Front-Panel Display Messages (Continued)

Message Full Name Description

SMJK Remote SmartJack Loopb ack DSX-1 signal is looped back to the network at the H2TU-R SmartJack

DIAGNOSTIC MESSAGES

A = xx Maximum Loop Attenuation The Attenuation (A) message appears followed by xx, where xx is the

ACQ Acquisition The multiplexers of the H2TU-C and H2TU-R are trying to estab li sh

AnL Acquisition n Loop The multiplexers of the two devices are trying to establish

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

FERR Framing Bit Error Occurred Framing bit error occurred at H2TU-C DSX-1 input. FLDL Flash Download Flash download of firmware updates. Contact Customer Service for

HES HDSL2 CRC Error H2TU-C HDSL2 Loop Cyclical Redundancy Check (CRC) error. LBPV Local Bipolar Violation A bipolar violation has bee n received at the DSX-1 input to the HiGain

M=xx HDSL2 Loop Margi n Indicates the power of the received HDSL2 signal relative to noise (S/N

MNGD Managed The HiGain Line Unit is under control of the HMU-319 Network

PWR FEED OFF Power Feed Off HDSL2 span power has been turned off by setting the PWRF option to

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 establi sh

SnL Signal n Loop The transceivers of the two devices are trying to establish contact with

module.

loop attenuatio n, measured in dB.

synchronization over the HDSL2 loop.

synchronization with each ot her, where n is the number of the span.

conditions are norm al. Therefore, the integri ty of the H2TU-R or the HDSL2 loop is quest ionable.

update procedures (see “Appendi x D - Product Support” on page 5 4).

Line Unit.

with respect to 21.5 dB). Any value of 6 dB or greater is adequate for reliable system operation.

management unit. In this state, the front-panel craft port and push buttons are disabled.

off, or HDSL2 span power has been turned off by use of the A2LB Intelligent Office Repeater (IOR) Power Down co de.

contact with each other over the HD SL2 loop.

each other, where n is the number of the span.

SYSTEM INFORMATION MESSAGES

(a)

CODE xxxx L ine Code: AMI or B8ZS The line code that H2TU-C-388 is receiving at its DSX-1 interface, if the

DS1 option is set to AUTO. Otherwise, it mimics either of the other two DS1 line code settings, Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS).

FRM xxxx Frame: SF, ESF, UNFR Defines the type of frame pattern being received from the DSX-1:

SuperFrame (SF), Extended SuperFrame (ESF), Unframed (UNFR). LATT xx Loop Attenuation The current loop a tt enuation threshold setting measured in dB. LIST xx HiGain Line Unit List Number The list number xx. MARG xx Margin The current margin threshold setting measured in dB. VER x.xx HiGain Line Unit Software Version

The software version number (x.xx).

Number

(a) System information messages are displayed in scroll mode. To scroll through system information messages, press the MODE

button for 3 or more seconds.

6 June 6, 200 0 H2TU-C-388 Li st 1

152-388-100-02, Issue 2 Installation

INSTALLATION

Upon receipt of the equipment, insp ect the contents for signs of damage. If the equipm ent h as been damaged in transit, immediately report the extent of damage to the transportation company and to ADC.

Figure 2. Installing the H2TU-C-388 into a Shelf

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-3 88 Lis t 1 DSX-1 output ports to the cross-connect panel must be grounded at both ends.

1 Align the H2TU- C-388 List 1 with the enclosure slot guides, then push the unit in until it touches th e

backplane card-edge connector.

2 Press down on the H2TU-C-388 front panel to properly seat it.

H2TU-C-388 List 1 June 6, 2000 7

Installation 152-388-100-02, Issue 2

VERIFICATION

Once the H2TU-C-388 List 1 is installed, verify that it is operating properly. To do this, monitor the following:

• Status LED

• Status messages reported by the front-panel display (see Table 2 on page 5)

Verification without a Downstream Device

If there is no downstream device installed: 1 Verify that the H2TU-C powers up. The front-panel display illuminates and reports status messages. (See

Table 2 on page 5 for a list of messages.)

2 Verify that the H2TU-C attempts to communicate with downstream devices (status LED flashes red). Even

if a downstream device is not present, the following events should occur:

a The front-panel display reports various four-character status messages. b The H2TU-C again attempts communication with downstream devices until a downstream device is

detected.

Verification with a Downstream Device

If a downstream device has been installed:

1 Verify that the H2TU-C powers up. (The front-panel display illuminates and reports various status messages.) 2 Verify that the H2TU-C attempts to communicate with downstream devices (status LED flashes red). One of

the following occurs:

• If downstream devices are successfully identified and the HDSL2 loo p synchronizes, the H2TU-C status

LED lights steady green. The H2TU-C reports normal margin messages on the fron t- pane l di splay.

• If downstream devices are not successfully identified, the H2TU-C reports four-character status

messages. The H2TU-C attempts communication again and reports fo ur-character status messages. The H2TU-C repeats this cycle until a downstream device is detected.

3 Verify that the remote unit synchronizes normally. The H2TU-C status LED should light a steady green, and

the front-panel display should report normal margin messages.

4 Verify that a valid DS1 sig nal has been applied to the H2TU-C and the H2TU-R.

• If no DS1 signal is being applied to either the H2TU-C or the H2TU-R inputs, then the appropriate DS1

alarms (LLOS or RLOS) are observed on the front-panel display, and the status LED flashes red.

• If a valid DS1 signal is being supplied to the H2TU-C and H2TU-R, then DS1 alarm indications should

be absent and the status LED should be a steady green.

8 June 6, 200 0 H2TU-C-388 Li st 1

152-388-100-02, Issue 2 Provisioning

PROVISIONING

There are two provisioning methods:

• Use the MODE and SEL buttons on the front panel of the H2TU-C to: – Set system options – Reset the H2TU-C to its factory default settings for system options – Display system option settings (scroll mode) – Select system loopbacks

• Use a maintenance terminal (VT100 terminal or a PC running terminal emulation software) connected to the

H2TU-C craft port (or to an HMU craft port) to access the HiGain HDSL2 maintenance screens (Figure 3 on

page 12). This gives you full access to all H2TU-C status, history, inventory, and provisioning screens.

No dip switches or jumpers are required to provision the H2TU-C-388 List 1 as it contains a non-volatile RAM (NVRAM) which stores the s ystem option settings. System op tion settings are retained if shelf power is lost or if the H2TU-C-388 List 1 is unplugged.

USING THE MODE AND SEL BUTTONS

Setting Options through MODE and SEL

To provision the H2TU-C-388 List 1 through the MODE and SEL buttons on the front panel: 1 Press the MODE button for 1 second and then release it. The front panel display alternately shows the first

system parameter and its current setting.

2 Press the SEL butt on to step thr oug h all possible settings of the selected parameter. 3 After the desir ed setting has been selected, press the MODE button. This updates the current displayed

parameter to the selected setting, then advances to the next configurable parameter. After the last parameter has been selected, a CONF NO message appears on the front-panel display.

4 Do one of the following:

• To cancel the session without saving the requested parameter changes, press the MODE button or do

nothing. (After 30 seconds, the display returns to its normal mode without saving the new changes. )

• To accept the requested parameter ch anges, p res s the SEL butto n. ( A CONF YES message displays, and

the display returns to its normal mode after saving the new changes.)

H2TU-C-388 List 1 June 6, 2000 9

Provisioning 152-388-100-02, Issue 2

Resetting to Factory Default Values

All user options for the H2TU-C-3 88 List 1 (Table 5 on page 17) can be set to the factory default values using the MODE and SEL buttons. To set the user options to their default values:

1 Press the SEL button for 6 seconds until the following message appears:

DFLT NO

2 Press the SEL button while the DFLT NO message appears.

The message changes to DFLT YES indicating the factory default values are now in effect and the display returns to the normal mode.

To terminate the DFLT mode without setting the factory default values, do one of the following:

• Press the MODE button to return to the normal display mode.

• Wait 30 seconds for the unit to return to the normal display mode.

Displaying System Parameter Settings

To scroll through the current settings of all system parameters, press the MODE button for 3 or more seconds . The H2TU-C-388 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

Loopback Modes

See “Loopb ack Operation” on page 39 for instructions on using the MODE and SEL buttons to activ ate loopbacks.

USING A MAINTENANCE TERMINAL

Connecting to a Maintenance Terminal

A miniature, 3-pin, 210 Bantam-type jack on the front panel serves as a craft port and allows connection between the HiGain Line Unit and a maintenance terminal (ASCII terminal or PC running a terminal emulation program). A 210-to-DB-9 adapter is provided with every unit to facilitate the use of standard RS-232, DB-9 cables (see

Figure 29 on page 51). Once connected to a maintenance terminal, you can access the maintenance, provisioning,

and performance screens. To connect to a maintenance terminal:

1 Insert the 210-to-DB9 adapter into the RS-232 jack on H2TU-C-3 88 front panel. 2 Connect an RS-232 cable to the adapter. 3 Connect the other end of the cable to the serial port on the maintenance terminal. 4 Start a terminal emulation program such as ProComm (emulating a VT100 terminal).

10 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Provisioning

5 Con figure the maintenance terminal to the following communication settings:

• 9600 baud

• No parity

• 8 data bits

• 1 stop bit

• Hardware flow control to OFF

6 If necessary, press + to refresh the HiGain HDSL2 logon screen.

CTRL R

The Logon Screen

The HiGain maintenance terminal screens allow you to monitor, provision, and troubleshoot an H2TU-C-388 List 1 system.

To select a menu from the HiGain HDSL2 logon screen (Figure 3 on page 12), do one of the following:

• Type the first letter of the menu.

• Use the arrow keys to select the menu and press .

← →

Table 3 summarizes the navigational keys. They are also listed in the onscreen Help menu. Table 4 on page 12

describes t he Logon screen menus.

Table 3. Navigational Keys for the HiGain Maintenance Terminal Screens

(a)

Key

SPACEBAR

ENTER

or (VT100)

ESC F11

or +

CTRL E

↑

or +

CTRL X

↓

→

or +

CTRL D

←

or +

CTRL S

CTRL R

(a) Legacy manageme nt units require use of control keys instead of arrow keys.

Function

Cycle through selection s. Activate the current setting or choice, or display a menu. Return to the parent menu. Select the submenu or item above the current one, or ret urn t o t he previous menu. Select the submenu or item below the current one. Select the menu or item to the right of the current one. Select the menu or item to the lef t of the current one, or return to the pr evious menu. Refresh the screen.

ENTER

Most VT100 emulation programs support a print screen o ption. For Windows-based programs, such as ProComm or Hyperterminal, do the following:

1 Highlight the screen that you wish to print. 2 Click File, then Print. 3 In the Print dialog box, choose Selection as the Print Range. 4 Click OK to print. For printing procedures for other programs, contact the appropriate vendor.

H2TU-C-388 List 1 June 6, 2000 11

Provisioning 152-388-100-02, Issue 2

Menu bar

Monitor Performance Event Log Config Inventory Rlogon Help

+--------------------------------------------+ || | PairGain Technologies Inc. | | HiGain Solitaire HDSL2 | || | Voice: 800.638.0031 | | Fax : 714.832.9924 | | Web : www.pairgain.com | +--------------------------------------------+

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Circuit ID Number Date and Time Logon Device System Status

Figure 3. Logon Screen

Table 4. Logon Screen Menus

Press this key: To access this me nu : Menu Functions

Monitor Monitors loopbacks and alarms, and provides a graphical representation of circuit

activity, includ in g ES, UAS, SES, and line code.

Performance Provides performance and alarm histories for current, 25-hour, 48-hour, or 31-day

periods for either the DS1 or HDSL2 interface.

Event Log Identifies the 100 most recent system events and reports the date and time of

occurrence.

Config Provides standard configuration options, ADC options, date and time setting, and a

reset option (factory settings).

Inventory Provides product information about the various devices that are in the system and

lists circuit and device identifications.

Rlogon / Rlogout Remote logon can be performed from the H2TU-C or H2TU-R. The screen displays

logout” when the H2TU-C or H2TU-R is remotely logged on to the other unit at

“R

the end of the circuit. To log off the remote unit, press . “R

now locally logged on unt il is pressed again to reinitiate the remote logon.

Help Provides a glossary of terms used in the HiGain HDSL2 maintenance screens, a list

of navigational keys, and ADC contact information.

logout” changes to “Rlogon”. The unit is

12 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Provisioning

PROVISIONING TASKS

After the HiGain Line Unit is successfully installed, perform these basic provisioning tasks:

1 Set the date and time (see “Settin g Date and Time” on th is page) 2 Set the circuit ID numbers (see “Setting Circuit ID Numbers” on page 14) 3 Make any necessary configuration changes (see “Configuring the System” on page 15) 4 Clear history, alarm, and event log screens to remove miscellaneous data during startup (see “Clearing the

History, Alarm, and Event Log Screens” on page 21)

Setting Date and Time

Monitor Performance Event Log Config Inventory Rlogon Help

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

+----------------------+

Standard Options -> |

| | PairGain Options -> |

Date and Time -> |

| +-------------------------------+ | Date (mm/dd/yyyy): | Time (hh:mm[:ss]): 12:30:01 | +-------------------------------+

04/15/2000 |

Figure 4. Configuration Menu - Date and Time

1 Type to select the Config menu. 2 Select Date and Time, then press .

ENTER

3 Enter the date in the format indicated, then press . 4 Enter the time in the format indicated (entering seconds is optional), then press .

H2TU-C-388 List 1 June 6, 2000 13

ENTER

Provisioning 152-388-100-02, Issue 2

Setting Circuit ID Numbers

The Inventory screen provides product information on all units in the system and allows setting of the circuit and unit identification numbers.

onitor

-------------------------- Product Information ---------------------------Unit : H2TU-C H2TU-R Product : H2TU-C-388 H2TU-R-402 List : 1 1 Sw Ver. : 2.10 2.10 Build # : 02 02 Checksum : 0x3FAE 0x3FAE H2 Xcvr : L1-RA2 1.31 L1-RA2 1.31 Serial # : 01232456789 0123456789 CLEI : VACHKW0CAA VARHJUUCAA Mfg. Date: 04/05/00 04/05/00

-------------------- Circuit and Unit Identifications --------------------Circuit ID :

H2TU-R ID : yyyy--yyyy--yyyy--yyyy

Enter new ID and press <Enter> to set. ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

erformanceEvent LogConfigInventoryRlogonHelp

xxxx--xxxx--xxxx--xxxx

Figure 5. Inventory Menu

1 Type to select the Inventory screen. 2 Type the Circuit ID number, then press .

ENTER

3 Type the ID numbers of all other devices listed in the system, pressing after each entry.

ENTER

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152-388-100-02, Issue 2 Provisioning

Configuring the System

The Config menu (Figure 6) allows you to make the following types of system configuration changes:

• Standard options (Figu re 7 on page 16)

• ADC options (Figure 8 on page 16)

• Date and time (see “Setting Date and Time” on page 13)

• Master clear (see “Clearing the History, Alarm, and Event Log Screens” on page 21)

• Reset to factory default configuration (Figure 9 on page 20)

Monitor Performance Event Log Config Inventory Rlogon Help

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

+----------------------+

Standard Options -> |

Figure 6. Configurat ion Menu

Making Changes to Standard and ADC Options

Figure 7 and Figure 8 on page 16 show the Standard and ADC configuration options. Standard options are those

that are supported by HiGain units when connected to units from other vendors. ADC options are an extended set of options that are only available when using HiGain u nits exclusively. For a d escription of each op tion and a list of possible option settings, refer to Table 5 on page 17 and Table 6 on page 18. To make changes to these options:

1 Type to select the Config menu. 2 Use the and arrow keys to select Standard Options or ADC Options, and press .

↑ ↓

ENTER

3 Use the arrow keys to select an option. 4 Press the to cycle thr ough the available settings for that option. 5 Press to activate your choice.

H2TU-C-388 List 1 June 6, 2000 15

SPACEBAR

ENTER

Provisioning 152-388-100-02, Issue 2

onitor

erformanceEvent LogConfigInventoryRlogonHelp

+----------------------+

Standard Options -> |

AUTO |

Press <Space> to cycle through settings and <Enter> to activate. ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Figure 7. Configuration Menu - St andard Options (Defaul ts Shown)

Monitor Performance Event Log Config Inventory Rlogon Help

| | HDSL2 BER Threshold (HBER) : NONE |

+----------------------+ | Standard Options -> | |

PairGain Options -> |

ON |

Press <Space> to cycle through settings and <Enter> to activate. ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Figure 8. Configuration Men u - ADC Options (Defaults Shown)

16 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Provisioning

Table 5 describes the Standard Config screen options and lists their front-panel display codes. Table 6 on page 18

describes the ADC Config screen options. Selections in bold typeface are the factory default settings.

Table 5. HiGain Line Un it List 1 Standard Config Screen Options

Standard Con fig Screen Options

Loopback Timeout

Loop Attenuation Threshold

Margin Threshold MARG 0 to 15 dB Determines the minimum allowable ma rgin below which a system alarm can

DS1 Frame Formatting

DS1 Line Coding (see “DS1 Line

Coding (DS1) Option” on page 19)

H2TU-C Equalization

See “H2TU-C

Equalization (EQL) Option.” on page 19.

H2TU-R Line Buildout

Alarm Pattern ALMP AIS Enables the HiGain system to output an AIS payload at its DS1 ports for LOSW

Screen Display Code

LBTO NONE Disables automatic time-out cancellation of all loopbacks.

LATT 0 through 40 dB Determines the maximum lo op attenuation before an alarm is declared. The

FRMG AUTO Configures the HiGain system to operate in an auto-framing (AUTO) mode. It

DS1 AUTO The H2 TU -C-388 and H2TU-R monitor the incoming DS1 bit streams for the

EQL 0 Sets the Equalizer to DS X-1 for 0 to 132 feet.

RLBO 0 dB Sets the DS1 receive level output toward the Customer Interface (CI). Can only

Selection Description

20 Sets automatic cancellation of all loopbacks to 20 minutes after initiation. 60 Sets automatic cancellation of all loopbacks to 60 minutes after initiation. 120 Sets automatic cancellati on of all loopbacks t o 120 minutes after in itiation.

loop attenuation threshold can only be set through t he HiGain HDSL2 maintenance screens.

35 dB Default value. Zero disables the al arm.

occur. Zero disables the alarm.The Margin Alarm Thresh old can only be set through the HiGain HDSL2 maintenance screens.

4dB Default value.

detects and locks to both SF or ESF DS1 frame patterns. Lin e and path performance parameters are maintained and displayed. Unframed payloads will cause the ES-P and SES-P counters to increment.

SF Configures the HiGain system to search for the SF framing pattern at its DS1

input.

ESF Configures the HiGain system to search for the ESF framing pattern at its DS1

input.

UNFR Configures the same as AUTO except unframed payloads do not cause the

ES-P and SES-P counters to increment.

B8ZS code. If the H2TU-R detects this code, the H2TU-C enters B8ZS output mode. The H2TU-C reverts back to AMI output mode if no B8ZS codes are received at the H2TU-R input fo r 5 seconds. Similarly, when the H2TU-C detects the B8ZS code, the H2TU-R enters B8ZS mode and returns to AMI

mode if no B8ZS code is received at the H2TU-C input for 5 seconds. B8ZS Places both the H2TU-C-388 and H2TU-R into B8ZS mode. AMI Places both the H 2TU-C-388 and H2TU-R into AMI mode.

133 Sets the Equalizer to DSX-1 for 133 to 265 feet . 266 Sets the Equalizer to DSX-1 for 266 to 398 feet . 399 Sets the Equalizer to DSX-1 for 399 to 532 feet . 533 Sets the Equalizer to DSX-1 for 533 to 655 feet .

be set through the HiGain HDSL2 maintenance screens.

-7.5 dB Sets the DS1 RLBO level toward the CI to -7.5 dB.

-15 dB Sets the DS1 RLBO level toward the CI to -15.0 dB.

and DS1 LO S. See Figure25 on page38 for LOS/AIS response priorities. LOS Enables the HiGain system to output an LOS condition at its DS1 ports for

LOSW and DS1 LOS.

Continued

H2TU-C-388 List 1 June 6, 2000 17

Provisioning 152-388-100-02, Issue 2

Table 5. Hi Gain Lin e Unit List 1 Standard Config Screen Options (Continued)

Standard Confi g Screen Options

H2TU-R TLOS Loopback

Screen Display

Selection Description

Code

TLOS ENA Enables a logic loopback at the H2TU-R when an LOS occurs at its DS1 input.

See Figure 25 on page 38 for LOS/AIS response priorities.

DIS Disables TLOS logic loopback.

Network Loopback Pattern

NLBP AIS Enables the H2TU-R to transmit AIS towards the CI for any network loopback.

See Figure 25 on page 38 for LOS/AIS response priorities.

LOS Enables the H2TU-R to transmit LOS towards the CI for any network loopback.

Table 6. HiGain Line Unit List 1 ADC Config Screen Options

ADC Config S creen Options

Line Power Feed PWRF OFF Disables powering to the HDSL2 pair.

Remote Provisio ning RTPV ENA Enables remote provisioning.

Bipolar Violation Transparency

See “Bipolar

Violation Transparency (BPVT) Option” on page 19.

DS1 BER Threshold DBER ENA Enables the fixed 24-hour DS1 BER threshold.

HDSL2 BER Threshold

See “HDSL2 BER

Threshold (HBER) Option” on page 19.

Special Loopback Mode

SmartJack Loopback LPBK ENA Enables the HiGain system to recognize all inband SmartJack (SMJK)

Screen Display Co de

Selection Description

ON Keeps the HDSL2 line voltage at nominal -185 Vdc.

DIS Dis ables remote provi s ioning.

BPVT ENA Enables BPVs and HDSL2 CRC errors at the DS1 input to be converted into

DS1 BPVs at the DS1 output at the di stant end. This makes HiGain transparent to BPVs.

DIS Disabl es BPV Transparency.

DIS Prevents the generation of a system alarm due to DS1 BER.

HBER 1E-6 The Status LED flashes red when the Bl ock Error Rate (BER) exceeds 10-6.

1E-7 The Status LED fl ashes red when BER exceeds 10-7. NONE Prevents generation of a system alarm due to BER.

SPLB GNLB Configures the HiGain system to respond to the generic inband loopback

codes.

A1LB and A2LB

Configures the HiGain system to respond to the inband loopback codes of the Teltrend addressable repeater.

A3LB Configures the HiGain system to respond to the inband loopback codes of

the Wescom addressable repeater.

A4LB Configures the HiGain system to respond to the inband loopback codes of

the Wescom Mod 1 addressable repeater.

A5LB Configures the HiGain system to respond to the inband loopback codes of

the Teltrend Mod 1 addressab le repeater.

loopback commands.

DIS Configures the HiGain system to ignore all inband SmartJack loopback

commands.

Continued

18 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Provisioning

Table 6. HiGain Line Unit List 1 ADC Config Screen Options (Continued)

ADC Config S creen Options

Remote Disconnect Alarm

Screen Display Co de

RDA ENA Enables a remote DS1 LOS condition at the input to the H2TU-R to generate

Selection Description

an LOS alarm. AIS or LOS (depending on AL MP) i s sent towards the network.

DIS Prevents a remote DS1 LOS condi tion at the input to the H2TU-R from

causing an LOS alarm. The front-panel Status LED still flashes red and the ALRM RLOS message displays. The LOS is sent towards the network from the H2TU-C instead of AIS.

HDSL2 BER Threshold (HBER) Option. The HBER option permits monitoring of loop integrity and reporting of alarms when excessive errors are detected. The PM primitive used for this purpose is the CRC checksum performed on the HDSL2 f rame for bo th directions of transmission. It is, therefore, called a block er ror rate rather than the bit error rate associated with the DS1 interface. The CRC errors and counts display on the Monitor screen for both the H2TU-C and H2TU-R. The HBER option allows an alarm to be generated if the total number of CRCs at either the H2TU-C or H2TU-R exceeds the selected BER threshold during the last 1-minute interval.

• HBER option = 1E-6. Alarm is generated if CRC > 92

• HBER option = 1E-7. Alarm is generated if CRC > 9

Once initiated, the HBER count clears when the CRC count drops below the selected threshold. Selecting NONE inhibits this alarm.

DS1 Line Coding (DS1) Option. The DS1 line code option should always be set to conform to the type of DS1 service (AMI or B8ZS) being provided by the HiGain system. The Auto mode, which can adapt to either AMI or B8ZS, should only be used in applications that require it (such as when HiGain acts as a standby circuit to DS1 circuits whose line codes are not known or may be both AMI and B8ZS). This is because the Auto mode induces one BPV in the DS1 bit stream whenever it switches from AMI to B8ZS. The Auto mode allows both the H2TU-C and the H2TU-R to set its DS1 output code to that which is being received at the distant end DS1 input. This forces the input and the output codes in each direction of transmission to be identical.

H2TU-C Equalization (EQL) Option. Equalization is the configuration of s ystem transmission characteristics within specified limits. An adaptive equalizer inserts a frequency-shaped loss that corresponds to an equivalent addition of an appropriate cable length. By simulating the additional cable loss necessary for correct operation, the equalizer compensates for a range of variation in transmission path characteristics.

Bipolar Violation Transparency (BPVT) Option. The HiGain Line Unit improves compatibility with Digital Loop Carrier (DLC) feeder applications because of its ability to transmit DS1 BPV occurrences between its DS1 interfaces. This feature is required to support protection switching in DLC applications. Each DLC terminal must be able to monitor the integrity of its Receive DS1 payload and then switch to the protect line when the integrity of the path drops below specific user selected limits. An essential requirement of this feature is th e need for each DLC terminal to detect BPVs in its DS1 input. Standard HDSL systems correct DS1 BPVs at the input and therefore prevent them from being detected by the DLC terminals to which they are connected. The HiGain Line Unit and its associated remote units remove this limitation and become BPV transparent by detecting and counting input BPVs at each end and then by replicating them at the DS1 output port of the distant end.

The BPV count is converted into BPVs at the distant end during the following second at a rate of 1 BPV every

-3

128 DS1 bits up to a maximum of 12000 (BER=7.7 x 10

-3

exceeds the maximum 10

BER required by mo st DLC systems.

). This maximum rate is more than adequate since it

H2TU-C-388 List 1 June 6, 2000 19

Provisioning 152-388-100-02, Issue 2

DS1 BER (DBER) Option. The DS1 BER alarm occurs when any of the DS1 or DSX-1 performance monitoring parameters listed in Table 7 exceed the counts shown for the 24-hour period between 12:00:00 AM

-6

through 11:59:59 PM . These thr eshol ds corr espond to a 10

BER. All PM counters clear to zero at 12:00:00 AM

or when Master Clear is selected.

Table 7. DS1/DSX-1 24-hour PM Threshold

Parameter Threshold Count

CV-L (BPV) 133,400 ES-L, ES-P, PRM-NE, PRM-FE 648 SES-L, SES-P 100 UAS-P, UAS-L 10

Resetting the H2TU-C

Resetting the H2TU-C-388 to its original factory settings may cause interruption of service.

To reset the HiGain Line Unit to its original factory defaults:

1 Type to select the Config menu. 2 Use the and arrow keys to select Set Factory Defaults, then press . 3 Type if you are certain you want to reset the H2TU-C, or press to cancel this action.

↑ ↓

Y N

onitor

SETTING FACTORY DEFAULTS...

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

erformanceEvent LogConfigInventoryRlogonHelp

+----------------------+

Standard Options -> |

Set Factory Defaults |

| +----------------------+

SERVICE *MAY* BE INTERRUPTED!

ENTER

ARE YOU SURE (Y/N)?

Figure 9. Configuration Menu - Reset to Fa ctory Defaul ts

20 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Provisioning

Clearing the History, Alarm, and Event Log Screens

Clear the History, Alarm and Event Log screens after the system has been installed and is functioning properly. This removes miscellaneous data acquired during the startup session and ensures collection of accurate and meaningful data thereafter.

Monitor Performance Event Log Config Inventory Rlogon Help

Clear ALL performance, alarm and event log entries. Are you sure (Y/N)?

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

+----------------------+ |

Master Clear |

| | Set Factory Defaults | +----------------------+

Figure 10. Master Clear

To clear the Event Log, type to select the Event Log screen, then type to clear the screen.

E L

To clear an individual history or alarm screen, do the following:

1 Type to select the Performance screen. 2 Press the to select either interface (H2TU-C DS1, H2TU-R DS1, H2TU-C HDSL2 or

3 Press the to select the type of statistics (Current, Alarm History, 25 Hour History, 48

SPACEBAR

H2TU-R HDSL2), then press .

SPACEBAR

Hour History, or 31 Day History) and press after your selection.

ENTER

– Selecting 31 Day History allows you to clear the Current, 25-hour, 48-hour, and 31-day

performance history screens for the selected interface.

– Selecting Alarm Histo ry allows you to clear the alarm history sc reen for the selected interface. For

information about the DS1 and HDSL2 Alarm screens, see Table 11 on page 32.

4 Type to clear the screen.

To clear ALL history, alarm, and event log screens by this method:

1 Type to select the Config screen.

2 Select Master Clear. 3 Type to clear all screens.

H2TU-C-388 List 1 June 6, 2000 21

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

MONITORING SYSTEM ACTIVITY AND PERFORMANCE

The H2TU-C-388 List 1 provides two sets of maintenance screens for monitoring system activity and assessing performance.

• The Monitor screens provide a graphical representation of circuit activity and allow initiation of lo opb acks .

• The Performance screens provide current, 25-hour, 48-hour, and 31-day performance histories and a

continuous alarm history.

• The Event Log provides a description of the 100 most recent events.

USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY

1 Type to view the system diagram.

Figure 11 shows an armed circuit with an active loopback and alarms. Terms use d on the system d iagram are

defined in the onscreen Help menu glo ssary. Abnormal situations are high lighted on the diagram. See Table8

on page 23 for screen field descriptions.

DS1 DS1 Errors Armed mode Margin Loop attenuation Alarm type HDSL2 Errors

Monitor Performance Event Log Config Inventory Rlogon Help

ESF +---+ +---+ B8ZS |H2C| |H2R|

------->

ARM | | |M =19 M =18 | |

ES =3 | SES=3 | UAS=0 |

ESF | B8ZS |

<-------

----------------------------------LOOPBACKS-----------------------------------Active Loopback: NLOC-PL

Press <Space> to select LB New Loopback: NLOC - Loopback H2TU-C towards Network and <Enter> to activate (LPDN,NLOC,CREM,NREM,CLOC) ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: Alarm

|-+ |||-AIS ->

| |||

| |LA=25 LA =25 | |

| | | |ES=1 | |=MAL ==========================================| | SES=1 | | | | UAS=0 | |ES =41 ES =1 | | PRM=0

| |SES=41 SES=1 | |

| |UAS=38 UAS=0 | |

| ||| <-+ |||

|LPF| | |<+---+ +---+

RLOS -

Line code and framing Active loopback System status

Figure 11. Monitor Screen - Active Loopback with Alarms

2 To initiate a loopback, press the to cycle through the loopback choices. Press to make

SPACEBAR ENTER

your choice, When prompted with the message: Are you sure (Y/N)?, press to initiate the loopback or to

Y N

cancel. For more information about loopbacks and troubleshooting, see “Testing” on page 36.

22 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

3 To initiate a loopdo wn of all active loopbacks, press the to select LPDN, then press or

. When prompted with the message: Are you sure (Y/N)?, press to initiate the loopdown or to

N Y N

SPACEBAR ENTER

cancel.

Table 8. Monitor Screen De scriptions

Field Description

Active Loopback An active loopback is indicated on the lower third of the Monitor screen. Avai lable loopbacks are

Alarm type Indicates type of alarm. Armed mode Indicates system is in an armed state for an intelligent repeater lo opback command. Code type Type of DS1 line coding received or sent (B8ZS or AMI). DS1 ES Count Errored Seco nds—The sum of the Errored Seconds-Line (ES-L) and Errored Seconds-Path (ES-P)

DS1 SES Count Severely Errored Seconds—The sum of the DS1 Severely Errored Seconds-Line (SES-L) and

DS1 UAS Count Unavailable Errored Seconds —The number of seconds during which the DS1 input signal was

Frame type Type of DS1 framing detected at the input stream (SF, ESF, or UNFR). HDSL2 ES Count Errored Seconds—The number of 1-second intervals that contained at least one CRC or LOSW

HDSL2 SES Count Severely Errored Seconds—The number of 1-second intervals that contain at least 50 CRC errors

HDSL2 UAS Count Unavailable Errored Seconds—The number of seconds the HDSL2 loop is unavailable. This occurs

ID Circuit identification (ID) number. LA Loop Attenuation—Indicates the att enuation of the Overlapped PAM Transmission with

LPF Line Power Feed—Indicate s the HDSL2 line pow e r is on. M Margin—The signal-to-noise ratio at all HDSL2 ports, relative to a 10-7 Bit Error Rate. MAL Margin Alarm—Indicates the margin on HD SL2 loop has dropped belo w the thresh old (0 to 15 dB)

PL (or HG) PL displays when the loopback was init iated by a command embedded in the DS1 data path

PRM The sum of the Performance Report Messaging-Near End (PRM- NE) and Performance Report

System Status The presence or absence of an alarm condition is indicated on the lower right corner of all screens.

indicated by gray text. See Table 15 on page 40 for a summary of the HiGain loopback codes.

counts detected on the DS1 input over a 24-hour period. Errors included are: DS1 Frame errors, BPV, and ESF CRC errors.

Severely Errored Seconds-Path (SES -P) co unts over the last 24 hours.

absent over a 24-hour period.

error. This value is a running total of the last 24 Hours.

or one or more LOSW defects. (An L OS W defect occurs when at least three consecutive HDSL frames contain one or more frame bit errors.) This value is a running total of the last 24 hours.

after 10 contiguous HDSL SES and is retired after 10 contiguous non-SES seconds. This value is a running total of the last 24 hours.

Interlocking Spectra (OPTIS) pulse from the distant end. The value is related to the loop attenuation at 196 kHz and should be kept under 35 dB.

as set by the operator.

payload (PL). HG displays when the loopback was initiated from a HiGain Generic (HG) front panel or by a HiGain maintenance terminal loopback comman d.

Messaging-Far End (PRM-FE) counts.

System: OK indicates that there are no alarms present ; System: Alarm indicates the presence of an alarm. Refer to “Using the Performance Screens to View Alarm Data” on page 30 for detailed alarm information.

H2TU-C-388 List 1 June 6, 2000 23

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA

The Performance screens display:

• CRC statistics for the HDSL2 or DS1 interface in 31-day, 48-hour, 25-hour, and current history reports

• Alarm statistics for the HDSL2 (Figure 23 on page 33) or DS1 interfaces (Figure 22 on page 31) on a

continuous basis

To access the Performance history screens:

1 Type to select the Performance screen. 2 Press the to select either interface (H2TU-C DS1, H2TU-R DS1, H2TU-C HDSL2 or H2TU-R

3 Press the to select the type of statistics (Current, Alarm History, 25 Hour History , 48 Hour

SPACEBAR

HDSL2), then press .

SPACEBAR

History, or 31 Day History), then press .

ENTER

Performance History at the DS1 Interface

The Performance History for the DS1 Interface provides 31-day, 48-hour, 25 -ho ur, and current statistics scre ens for the H2TU-C and the H2TU-R (as viewed from the H2TU-C). Figure 12 below and Figure 13 on page 25 are examples of DS1 performance history screens at the remote unit. Figure 14 on page 25 is an example of DS1 performance history screens at the line unit. Refer to Table 9 on page 27 for descriptions of the kinds of errors reported on DS1 interface screens.

Monitor Performance Event Log Config Inventory Rlogon Help

-----------------------------------------------------------------------------Date CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P PRM-NE PRM-FE 04/01 ---------04/02 ---------04/03 ---------04/04 ---------04/05 ---------04/06 ---------04/07 ---------04/08 ---------04/09 ---------04/10 ---------04/11 ---------04/12 12 14 10 10 10 100000 04/13 2000000000

H2TU-R DS-1 31 Day History (Page 1 of 3)

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-R DS-1 choices and <Enter> to view Statistics : 31 Day History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Press: (N)ext Page, (P)revious Page, C(l)ear History

Figure 12. H2TU-R DS1 31-Day Performance History

24 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

Monitor Performance Event Log Config Inventory Rlogon Help

-----------------------------------------------------------------------------Time CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P PRM-NE PRM-FE

23:00 ----------

1:00 ---------2:00 ---------3:00 ---------4:00 ---------5:00 ---------6:00 ---------7:00 ---------8:00 ---------9:00 ----------

10:00 ---------11:00 14 10 10 12 10 10 0 0 0 0 12:00 0002000000

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-R DS-1 choices and <Enter> to view Statistics : 48 Hour History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

H2TU-R DS-1 48 Hour History (Page 1 of 4)

Press: (N)ext Page, (P)revious Page, C(l)ear History

Figure 13. H2TU-R DS1 48-Hour Performance History

onitor

-----------------------------------------------------------------------------Time CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P 9:30 -------9:45 --------

10:00 -------10:15 -------10:30 -------10:45 -------11:00 -------11:15 -------11:30 -------11:45 -------12:00 -------12:15 121410101010 0 0 12:30 20000000

erformanceEvent LogConfigInventoryRlogonHelp

H2TU-C DS-1 25 Hour History (Page 1 of 9)

------------------------------------------------------------------------------

Press: (N)ext Page, (P)revious Page, C(l)ear History

Press <Space> to cycle through Interface : H2TU-C DS-1 choices and <Enter> to view Statistics : 25 Hour History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Figure 14. H2TU-C DS1 25-Hour Performance History

H2TU-C-388 List 1 June 6, 2000 25

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

Examples of current statistics screens are shown below. Figure 15 and Figure 16 sh ow s tatistics for the DS1 interface at the remote unit and line unit, respectively. These screens report 1-day, 1-ho ur, and 15-minute statistics.

onitor

-----------------------------------------------------------------------------Start 00:00 12:00 12:30 CV-L 0 0 0

ES-L 0 0 0 SES-L 0 0 0 UAS-L 0 0 0 CV-P 0 0 0 ES-P 0 0 0 SES-P 0 0 0 UAS-P 0 0 0 PRM-NE000 PRM-FE000 B8ZSS 0 0 0 MSEC 3482 1801 1

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-R DS-1 choices and <Enter> to view Statistics : Current ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

erformanceEvent LogConfigInventoryRlogonHelp

H2TU-R DS-1 Current Statistics

1 Day 1 Hour 15 Min

Press: C(l)ear Current Statistics

Figure 15. H2TU-R DS1 Current Statistics

Monitor Performance Event Log Config Inventory Rlogon Help

-----------------------------------------------------------------------------1 Day 1 Hour 15 Min

Start 00:00 12:00 12:30 CV-L 0 0 0

ES-L 0 0 0 SES-L 0 0 0 UAS-L 0 0 0 CV-P 0 0 0 ES-P 0 0 0 SES-P 0 0 0 UAS-P 0 0 0

B8ZSS 0 0 0 MSEC 3482 1801 1

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C DS-1 choices and <Enter> to view Statistics : Current ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

H2TU-C DS-1 Current Statistics

Press: C(l)ear Current Statistics

Figure 16. H2TU-C DS1 Current Statistics

26 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

Table 9. Acronyms Used on the DS1 Performance History Screens

Error Acronym

Description

CV-L Code Violatio n - Line

Total BPV count.

(b)

ES-L

Errored Seconds - Line Seconds with BPV ≥1.

Error Acronym

Description

SES-P Severely Errored Seconds - Path

Seconds with SES or CRC(ESF) ≥320 or

(a)

(SF) ≥8 (FT + FS).

UAS-P Unavailable Seconds - Path

A second of unavailability based on SES-P or AIS ≥1.

SES-L Severely Errored Seconds - Line

Seconds with BPV plus EXZ ≥1544.

PRM-NE

(c)

Performance Report Messaging - Near End The PRM from CPE indicates errors, and the signal received from the network at the remote is error-free.

UAS-L Unavailable Seconds - Line

Seconds with LOS ≥1.

PRM-FE

(c)

Performance Report Messaging - Far End The PRM from the network indicates errors, and the signal received from the CPE is error-free.

CV-P Code Violation - Path

Total count of SF frame bit (FB) errors or ESF, CRC errors.

(e)

ES-P

(a) FE is a frame bit error. (b) Line refers to the AMI, DS1 line code used to transport the payload. (c) Only appears on H2TU-R Performance History screens. (d) Appears on the DS1 Current Statistics screens. (e) Path refers to the total framed payload being transported between two points. (f) Severely Errored Frame—Two or more frame bit errors occurring in a 0.75 ms interval for SF or a 3 ms interval for ESF.

Errored Seconds - Path Seconds wi th S EF

(b)

(SF) ≥1.

(f)

, CRC (ESF) or

B8ZSS

MSEC

(d)

B8ZS Monitored Seconds Seconds with B8ZS detection when AMI option is active.

Monitored Seconds of the current (15 minute/1 hour/1 day) screen.

H2TU-C-388 List 1 June 6, 2000 27

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

Performance History at the HDSL2 Interface

The HDSL2 interface has 31-day, 48-hour, 25-hour, and curren t statistic screens for the H2TU-C . Figure 17 and

Figure 18 below are examples of 31-day and 48-hour performance history screens. Figure 19 and Figure 20 on page 29 are examples of 25-hour and current statistics performance history screens, respectively. Refer to Table 10 on page 30 for descriptions of the kinds of errors reported on all HDSL2 performance screens.

onitor

------------------------------------------------------------------------------

Date ES SES UAS CV LOSWS 04/01 - - - - 04/02 - - - - 04/03 - - - - 04/04 - - - - 04/05 - - - - 04/06 - - - - 04/07 - - - - 04/08 - - - - 04/09 - - - - 04/10 - - - - 04/11 - - - - 04/12 - - - - 04/13 14101014 10

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C HDSL2 choices and <Enter> to view Statistics : 31 Day History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

erformanceEvent LogConfigInventoryRlogonHelp

H2TU-C HDSL2 31 Day History (Page 1 of 3)

Press: (N)ext Page, (P)revious Page, C(l)ear History

Figure 17. H2TU-C HDSL2 31-Day Performance History

Monitor Performance Event Log Config Inventory Rlogon Help

-----------------------------------------------------------------------------Time ES SES UAS CV LOSWS

23:00 ---- -

1:00 ---- 2:00 ---- 3:00 ---- 4:00 ---- 5:00 ---- 6:00 ---- 7:00 ---- 8:00 ---- 9:00 ---- -

10:00 ---- 11:00 14 10 10 12 10 12:00 0002 0

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C HDSL2 choices and <Enter> to view Statistics : 48 Hour History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

H2TU-C HDSL2 48 Hour History (Page 1 of 4)

Press: (N)ext Page, (P)revious Page, C(l)ear History

Figure 18. H2TU-C HDSL2 48-Hour Performance History

28 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

onitor

-----------------------------------------------------------------------------Time ES SES UAS CV LOSWS 9:45 - - - - -

10:00 - - - - 10:15 - - - - 10:30 - - - - 10:45 - - - - 11:00 - - - - 11:15 - - - - 11:30 - - - - 11:45 - - - - 12:00 - - - - 12:15 14 10 10 12 10 12:30 0 0 0 0 0 12:45 0 0 0 2 0

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C HDSL2 choices and <Enter> to view Statistics : 25 Hour History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

erformanceEvent LogConfigInventoryRlogonHelp

H2TU-C HDSL2 25 Hour History (Page 1 of 9)

Press: (N)ext Page, (P)revious Page, C(l)ear History

Figure 19. H2TU-C HDSL2 25-Hour Performance History

Monitor Performance Event Log Config Inventory Rlogon Help

------------------------------------------------------------------------------

H2TU-C HDSL2 Current Statistics

1 Day 1 Hour 15 Min

Start 00:00 12:00 12:30 ES 0 0 0

SES 0 0 0 UAS 0 0 0 CV 0 0 0 LOSWS 3482 1801 1

Margin(dB) LA (dB) Hi 16 Cur 15 25 Low 12

Press: C(l)ear Current Statistics

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C HDSL2 choices and <Enter> to view Statistics : Current ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Figure 20. H2TU-C HDSL2 Curr ent Statistics

H2TU-C-388 List 1 June 6, 2000 29

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

Table 10. Acronyms Used on the HDSL2 Performance History Screens

Error Acronym Description

ES Errored Seconds

SES Severely Errored Seconds

UAS Unavailable Secon ds

CV Code Violation

LOSWS Loss of Sync Word Second

Seconds with HDSL2 CRC ≥1 or LOSW ≥1

Seconds with HDSL2 CRC ≥50 or LOSW ≥1

Based on 10 contiguous SES occurrences

Total count of HDSL2 CRC errors

Seconds with LOSW ≥1

USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA

To access the alarm history screens:

1 Type to select the Performance screen. 2 Press the to select an interface (H2TU-C DS1, H2TU-R DS1, H2TU-C HDSL2 or

3 Press the until Alarm History is selected, then press .

SPACEBAR

H2TU-R HDSL2), then press .

SPACEBAR ENTER

• Press or to page through the alarm history screens.

• Press to clear the selected alarm history screen.

N P

ENTER

30 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

Alarm History at the DS1 Interface

The Alarm History screen reports DS1 statistics for the H2TU-C (Figure 21) and the H2TU-R (Figure 22 on

page 31) on a continuous basis. The types of alarms reported are described in Table 11 on page 32. Current alarms

are shown in reverse video.

Monitor Performance Event Log Config Inventory Rlogon Help

------------------------------------------------------------------------------

Alarm First Last Status Count

LLOS 04/03/00 00:00 04/03/00 00:45 ALARM 12

LAIS OK 0 DBER 04/03/00 00:37 04/03/00 00:45 OK 7 LOF OK 0

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C DS-1 choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: Alarm

H2TU-C DS-1 Alarm History

Press: C(l)ear Alarm History

Figure 21. H2TU-C DS1 Alarm History Screen

Monitor Performance Event Log Config Inventory Rlogon Help

------------------------------------------------------------------------------

Alarm First Last Status Count

H2TU-R DS-1 Alarm History

RLOS 04/03/00 00:00 04/03/00 00:45 ALARM 12

RAIS OK 0 RAI OK 0 LRAI OK 0 PRM-NE DISABLED 0 PRM-FE DISABLED 0 DBER 04/03/00 00:37 04/03/00 00:45 OK 7 LOF OK 0

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-R DS-1 choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: Alarm

Press: C(l)ear Alarm History

Figure 22. H2TU-R DS1 Alarm History Screen

H2TU-C-388 List 1 June 6, 2000 31

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

Table 11. DS1 Alarm Descriptions

Screen Alarm Front-Panel Alarm Description H2TU-C DS1 ALARMS (Figure 21 on page 31)

(a)

LLOS

(a)

LAIS

DBER DBER Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of

LOF LOF Loss of Frame—Indicates the incoming DS1 frame pattern is other than the one selected,

H2TU-R DS1 ALARMS (Figure 22 on page 31)

(b)

RLOS RAIS RAIS Remote Alarm Indication Signal—Indicates an AIS (all ones) pattern is being transmitted

RAI RRAI Remote RAI—Indicates an RAI alarm (yellow) from the CPE with errors from the line unit

LRAI LRAI Line RAI—Indicates an RAI alarm (yellow) from the CPE with an error-free signal from the

PRM-NE PRMN Performance Report Messaging - Near End—The count of the PRM-NE register at the

PRM-FE PRMF Performance Report Messaging - Far End—The count of the PRM-FE reg ister at the

DBER DBER Bit Error Rate—The DS1 BER has exceeded the built-in 24-hour threshold limits of

LOF LOF Loss of Frame—Indicates the incoming DS1 frame pattern is other than the one selected,

(a) Issues a minor alarm (sent to the management unit or the backplane), if enabled. (b) AIS-CI is a modified AIS alarm pattern. Equipment not suited to detect AIS-CI still detects this signal as an AIS. AIS-CI is sent

toward the network indicating that an LOS (RLOS) or AIS (RAIS) has been received from the CPE.

LLOS Local Loss of Signal—Loss of the H2TU-C DSX-1 input signal. LAIS Local Alarm Indication Signal—Indicates an AIS (all ones) pattern i s transmitted from the

local DS1 output port. The ALMP option determines whether AIS (default) or LOS is sent towards the CPE.

-6

approximately 10

ESF or SF, by the FRMG option. Only occurs if the FRMG opt ion is set to SF or ESF.

RLOS Remote Loss of Signal—Loss of the H2TU-R DS1 inp ut signal.

(b)

from the remote DS1 output port. By default (see Figure 25 on page 38) AIS-CI

is sent

towards the network.

or network.

line unit or ne twork.

H2TU-R exceeds the 10-6 BER threshold at 648 events since 12:00:00 AM.

-6

H2TU-R exceeds the 10

approximately 10

BER threshold at 648 events since 12:00:00 AM.

-6

ESF or SF, by the FRMG option. Only occurs if the FRMG opt ion is set to SF or ESF.

32 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

Alarm History at the HDSL2 Interface

Figure 23 shows the H2TU -C HDSL2 alarm history, and Table 12 describes the alarms.

Monitor Performance Event Log Config Inventory Rlogon Help

------------------------------------------------------------------------------

Alarm First Last Status Count

LOSW 04/03/00 00:00 04/03/00 00:45 ALARM 12

MAL OK 0 LA OK 0 HBER 04/03/00 00:37 04/03/00 00:45 OK 7 SHORT OK 0 GND OK 0 OPEN OK 0

------------------------------------------------------------------------------

Press <Space> to cycle through Interface : H2TU-C HDSL2 choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: Alarm

H2TU-C HDSL2 Alarm History

Press: C(l)ear Alarm History

Figure 23. H2TU-C HDSL2 Alarm History Screen

Table 12. HDSL2 Ala rm Descr iptions

Screen Alarm Front-Panel Alarm Description HDSL2 ALARMS at the H2TU-C and H2TU-R

LOSW LOSW Loss of Sync Word—The HDSL2 loop has lost synchronization. MAL MAL Margin—The margin on the HDSL2 loop has dropped below the minimum threshold value

set for the system.

LA LA Loop Attenuation—The attenuation on the HDSL2 loop has exceeded the maximum value

HBER HBER Block Error Rate—The HDSL2 BER has exceeded the set threshold limits of

HDSL2 ALARMS at the H2TU-C only

SHORT PWR FEED SHRT Indicates a short between the Tip and Ring of the HDSL2 pair. GND PWR FEED GND The HDSL2 loop is grounded. OPEN PWR FEED OPEN Indicates a line power open condition.

set for the HDSL2 loop attenuat ion threshold.

-6

or 10

- 7

H2TU-C-388 List 1 June 6, 2000 33

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

USING THE EVENT LOG TO TRACK SYSTEM EVENTS

To view a running log of system events, press to select the Event Log. The Event Log displays the date and

time of the 100 most recent events (most recent displayed first) and provides a description of each even t. Refer to

Table 13 on page 35 for a complete list of event log messages.

• Press or to page through the event log.

• Press to return to the top of the log.

• Press to clear the event log.

N P

onitor

-----------------------------------------------------------------------------# Location Date and Time Entry

1 System 04/15/00 12:25:00 DS1 Alarm Register reset 2 System 04/15/00 12:25:00 HDSL2 Alarm Register Reset 3 System 04/15/00 12:25:00 DS1 Performance Register Reset 4 System 04/15/00 12:25:00 HDSL2 Performance Register Reset 5 System 04/15/00 00:13:32 Time set 12:25:00 6 System 04/15/00 00:13:27 Date set 04/15/00 7 H2TU-C 04/03/00 00:13:27 NLOC: Loop-down 8 H2TU-C 04/03/00 00:11:16 NLOC: Loop-up 9 H2TU-R 04/03/00 00:10:43 DS1 LOS Alarm: End 10 H2TU-R 04/03/00 00:10:30 DS1 LOS Alarm: Begin 11 System 04/03/00 00:04:11 DS1C: AUTO to AMI 12 H2TU-C 04/03/00 00:00:40 HDSL2 LOSW Alarm: End 13 H2TU-C 04/03/00 00:00:02 HDSL2 LOSW Alarm: Begin 14 - Empty 15 - Empty -

erformanceEvent LogConfigInventoryRlogonHelp

System Event Log (Page 1 of 7)

ID: xxxx--xxxx--xxxx--xxxx 04/15/00 12:30:01 H2TU-C System: OK

Press: (N)ext Page, (P)revious Page, (T)op of Log, C(l)ear Log

Figure 24. System Event Log

34 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Monitoring System Activi ty and P erf orm an ce

Table 13. Event Log Entry Messages List

Event Log Messages

Any DS1 Alarm History reset Any DS1 PM register reset Any HDSL2 Alarm History reset Any HDSL2 PM register reset Any Loop Down (any segment) Any Loop Up (any segment) Any provisionin g option change: <provisioning mnemonic>: changed fr om

<old> to <new> CPE DBER alarm (1 day threshold crossed of any PM data except PRM-NE or

PRM-FE) CPE DS1 AIS be gins / ends CPE DS1 LOS begins / ends CPE PRM-NE BER alarm (at the remote only: 1 day th reshold crossed of

PRM-NE: trouble on CPE receive) Current st atistics reset Event Log reset H2TU-C Power up / down H2TU-R Power up / down HDSL2 DC pair open begins/ends on any segment HDSL2 Ground fault begins/ends on any seg ment HDSL2 HBER alarm (threshold crossed) on any segment. HDSL2 loop attenuation (thresho ld crossed) on any HDSL2 I/F HDSL2 margin alarm (threshol d crossed) on any HDSL2 I/F HDSL2 unavailability begins / ends on any segment Master zero reset NTWK DBER alarm (1day th reshold crossed of any PM data) NTWK DS1 LOS begins / ends NTWK PRM-FE BER alarm (at the remot e only: 1 day threshold crossed of

PRM-FE: trouble on NTWK far end) NTWN DS1 AIS begins / ends Power Feed Open begins / ends Power Feed Short begins / ends RAI begins / en ds LRAI begins / ends (RAI-CI sent from the remote towards the netwo rk)

H2TU-C-388 List 1 June 6, 2000 35

Testing 152-388-100-02, Issue 2

TESTING

This section provides information about front-panel system alarms, LOS and AIS response, OCT55 test procedure, and loopback testing.

FRONT-PANEL SYSTEM ALARMS

Table 14 summarizes all possible HiGain system alarms in order of priority as they appear on the front panel.

When multiple alarms occur, the front-panel display only reports the highest priority alarm. The alarm history screens display alarms also, but provide greater detail. See “Using the Performance Screens to View Alarm Data”

on page 30. All alarms that are not inhibited will drive the front-panel Status LED to a flashing red alarm state.

Table 14. Front-Panel System Alarms Summary

Front-Panel Message

PWR FEED

(b)

SHRT PWR FEED

(b)

GND PWR FEED

(b)

OPEN

(c)

LOSW

(c)

LLOS

(c)

RLOS

LAIS Local Alarm Indication

Alarm Description To Inhibit

(a)

Power Feed Short A short exists between the Tip and Ring of

the HDSL2 pair.

Power Feed Ground The HDSL2 lo op is grounded. Cannot be inhibited.

Power Feed Open A line power open condition exists. Cannot be inhibited.

Loss of Sync Word

(d)

The HDSL2 loop has lost synchronization. Cannot be inhibited. Local Loss of Signal Loss of the DSX-1 input signal. Cannot be inhibited. Remote Loss of Signal Loss of the H2TU-R DS1 inpu t signal. Disable the RDA (Remote Disconnect

Indicates an AIS (all ones) pattern is being Signal

transmitted from the local DS1 output

port.

RAIS Remote Alarm

Indication Signal

LRAI Line RAI—Remote

Alarm Indication at the H2TU-R (Net signal

Indicates an AIS (all ones) pattern is being

received at the H2TU-R DS1 input port.

Indicates an RAI alarm (yellow) from the

CPE with an error-free signal from the line

unit or network. does not have errors.)

RRAI Remote RAI—Remote

Alarm Indication at the H2TU-R. (Net signal

Indicates an RAI alarm (yellow) from the

CPE with errors from the line unit or

network. has errors.)

xxxx-DBER DS1 Bit Error Rate The D S1 BER has exceeded the set

threshold limit s of approximately 10

(xxxx denotes either TUC or TUR. If TUC

and TUR occur at the same time, then TUC

displays.)

Cannot be inhibited.

Alarm) opt ion. The front-pa nel Stat us LED still flashes red and the ALRM RLOS message displays to alert you of the LOS state. LOS is sent towards the network from the H2TU-C. This option prevents the common occurrences of a CPE LO S condition from generating recur ri ng alarms and AIS payloads.

Cannot be inhibited.

Select DIS for the DBER system opti on.

-6

Continued

36 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

Table 14. Front-Panel System Alarms Summary ( Continued)

Front-Panel Message

LOF Loss of Frame The DS1 input does not contain the ESF or

Alarm Description To Inhibit

(a)

Change FRMG option to AUTO or UNFR . SF frame pattern setting of t he FRMG option.

PRMF Performance Report

Messaging - Far End

PRMN Performance Report

Messaging - Near End

xxxx-HBER

(c)

HDSL2 Block Error Rate

Indicates H2TU-R PRM-FE BER threshold is exceeded.

Indicates H2TU-R PRM-NE BER th reshol d is exceeded.

The HDSL2 BER has exceeded the set threshold limit s of 10

-6

or 10

- 7

. (xxxx

Set DBER threshold to DIS.

Select NONE for the HBER system optio n. denotes either TUC or TU R. If TUC and

TUR occur at the same time, then TUC displays.)

xxxx-MAL

(c)

Margin Alarm The margin on the HDSL2 loop has

dropped below the minimum thresh old

Set the Margin Alar m T h r esh ol d op tio n to

0 (zero). value set for the system. (xxxx denotes either TUC or TUR. If TUC and TUR occur at the same time, then TUC di splays.)

(c)

xxxx-LA

Loop Attenuation Th e attenuation on the HDSL2 loop has

exceeded the maximum value set for the

Set the HDSL2 Loop Attenuation

Threshold opti on to zero. HDSL2 loop at tenuation threshold. (xxxx denotes either TUC or TU R. If TUC and TUR occur at the same time, then TUC displays.)

(a) The message, ALRM, displays prior to any alarm message. (b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order. (c) Only these alarms assert the System Alarm bus on pins 20 and 21 of the card-edge connector if the ALM option is enabled. (d) When the HDSL2 loop loses sync word (LOSW), a system alarm condition exists. However, since the H2TU-C-388 enters the

acquiring mode, the front-panel status LED flashes red, and the ACQ or SIG message displays instead of the ALRM message.

Alarm Option for DLC Feed

To improve HiGain compatibility with the switch-to-protect features used in DLC feeder applications, the H2TU-C-388 List 1 has an Alarm Pattern (ALMP) option that allows you to select either an AIS or LOS DS1 output payload for the following alarms:

• LOSW on any loop

• LOS DS1

Retiring System Alarms

To retire a system alarm, press the SEL button to execute an Alarm Cutoff (ACO). An ACO turns the alarm off and replaces the ALRM message with an ACO message. The second part of the ALRM message, which defines the cause of the alarm, remains. Both parts of the message remain until the alarm condition clears or another higher priority alarm occurs.

H2TU-C-388 List 1 June 6, 2000 37

Testing 152-388-100-02, Issue 2

Remote LOS and AIS Response

Figure 25 shows the different ways the H2TU-R can respond to the network, depending on the configuration of

the TLOS, NLBP, RDA, and ALMP configuration options described in Table 5 on page 17 and Table 6 on

page 18.

Figure 25. H2TU-R LOS and AIS Response Priorities

OCT55 TEST PATTERN WITH AMI LINE CODE

The OCT55 test pattern can be used in unframed mode to stress the system and verify data integrity. In an SF or ESF framing mode, excessive zero anomalies may occur , which caus es the H2TU-C to r epor t ES, SES and UAS errors according to ANSI T1.231-1997.

38 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

LOOPBACK OPERATION

HiGain has a family of loopback options for analyzing circuit functionality. The loopback signal is transmitted and returned to the sending device for comparison. This allows you to verify the integrity of the HDSL2 channels to the H2TU-C, the H2TU-C DSX-1 interface, and the DS1 channels to the customer . Loo pback option s include:

• Generic Loopback (GNLB) options, including the SmartJack (SMJK) option (see Table 15 on page 40)

• Special Loopback (SPLB) options (see “Special Loopback Commands” on page 41) and the following

command tables:

– Addressable Repeater Loopback commands: A1LB, A2LB, A5LB (see Table 16 on page 45) – Addressable Repeater Loopback commands: A3LB, A4LB (see Table 17 on page 47)

Loopback commands can be initiated by:

• Selecting the loopback type using the MODE and SEL buttons on the H2TU-C front panel (or the Manual

Loopback button on the H2TU-R)

• Selecting the loopback type from the Monitor Menu when connected to the craft port of the H2TU-C or

H2TU-R

• Entering the loopback code (exceptions are COLB, DxLB, and RULB) into the test equipment connected to

the H2TU-C or H2TU-R

HiGain supports multiple loopbacks, but a single loopback is the preferred method.

Generic Loopback Commands

The HiGain Generic Loopback (GNLB) commands allow you to use inband codes to loop up either NLOC (4-in-7) or NREM (3-in-7) towards the network. In addition, these inband codes loop up CREM (6-in-7) or CLOC (5-in-7) towards the customer. Either loopup condition can be terminated (looped down) with the 3-in-5, SMJK loopdown code. All inband codes must be present for at least 5 seco nds before the HiGain system responds. TLOS is a logic loopback caused by loss of the DS1 input from the CI.

Figure 26 summarizes the available loopbacks in the system, and Table 15 on page 40 summarizes the HiGain

generic loopback commands. See “GNLB Test Procedures” on page 43 for the test procedures that apply when using the GN LB mode.

Activate loopback using one of the following:

• MODE/SEL pushbuttons

• Maintenance Terminal

• Test Set

NLOC

CREM CLOC

H2TU-C H2TU-R

NREM SMJK TLOS

Activate loopback using one of the following:

• LBK pushbutton

• Maintenance Terminal

• Test Set

Network

Customer Premises

Figure 26. Loopback Summary

H2TU-C-388 List 1 June 6, 2000 39

Testing 152-388-100-02, Issue 2

Table 15. Summary of HiGain Loopb ack Codes and Activation Methods

Method of Activation

Loopback Code Description Test Set Craft Port MODE/SEL

NLOC 1111000

4-in-7

NREM 1110000

3-in-7

CLOC 1111100

5-in-7

CREM 1111110

6-in-7

COLB Dual loopback at the H2TU-C. DSX-1 signal is looped back

RULB Dual loopback at the H2TU-R. DSX-1 signal is looped back

SMJK LpUp (PL)

SMJK LpUp (ESF-DL)

SMJK LpDn (PL)

SMJK LpDn (ESF-DL)

11000 2-in-5

1111-11110100-1000

11100 3-in-5

1111-11110010-0100

DSX-1 signal is looped back to the network at the H2TU-C. X X X

DSX-1 signal is looped back to the network at the H2TU-R. X X X

Signal from the customer is looped back to the customer

X X X

at the H2TU-R. Signal from the customer is looped back to the customer

X X X

at the H2TU-C.

to the network at the H2TU-C and signal from the customer

X X

is looped back to the customer at the H2TU-C.

to the network at the H2TU-R and signal from the customer

X X

is looped back to the customer at the H2TU-R. SmartJack Loopup or NID payload (PL) c ode. Invokes

H2TU-R loopback towards network. SmartJack Loopup or NID (ESF-DL ) code. Invokes

H2TU-R loopback towards network. SmartJack Loopdown or NID payload (PL) code. Removes

SMJK, NLOC, NREM, CLOC, CREM, CRGx, and NRGx. SmartJack Loopdown or NID (ESF-DL) code. Removes

SMJK, NLOC, NREM, CLOC, CREM, CRGx, and NRGx.

HiGain systems feature the SmartJack option which can emulate a Network Interface Device (NID) for the purpose of loopback testing of the HiGain circuit. SMJK and NREM loopbacks perform the same functions, but their initiation differs. SMJK indicates that the loopback was initiated by the 2-in-5 inband command. NREM, on the other hand, is initiated by the 3-in-7 inband command or by a command issued from the maintenance terminal or the MODE and SEL buttons.

Use the inband commands to enable or disable the SMJK loopback options. The H2TU-C-388 system setting is normally enabled to recognize all inband SmartJack loopback commands.

40 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

Special Loopback Commands

In addition to the GNLB loopback command mode, a HiGain system can be configured for one of five special loopback command modes. These are s elected from the maintenance terminal System Settings screen (see Table 5

on page 17) or by using the MODE and SEL buttons (see Figure 2 7 on page 44). Once a loopback mode is

activated, other loopback commands can be sent by a test set connected to the craft port of the H2TU-C or H2TU-R (see Table 16 on page 45 and Table 17 on page 47 for list of SPLB commands).

A1LB through A5LB are five special, addressable, repeater loopback modes which are supported by the H2TU-C-388 List 1. These loopback modes provide the HiGain system with sophisticated maintenance and troubleshooting tools. A1LB, A2LB, and A5LB are patterned after the Teltrend addressable DS1 repeater loopbacks. A3LB and A4LB are patterned af ter the Wescom addr essable DS1 repeater loopbacks . All five SPLBs have been enhanced to handle the specific requirements of the following HiGain customers:

• A1LB (Teltrend) = Southwestern Bell

• A2LB (Teltrend) = Southwestern Bell

• A3LB (Wescom) = New England Telephone

• A4LB (Wescom Mod 1) = New York Telephone

• A5LB (Teltrend Mod 1) = Southern New England Telephone (SNET), Southwestern Bell, Pacific Bell

The A1LB loopback selection complies with that proposed for HDSL2 systems in the T1E1.4/92 recommendation with the following additions:

• Query loopback

• IOR (Intelligent Office Repeater) powerdown

• Four loopback time-out choices

• Initiation from either end

• Repeating bit error signatures

• Alternate query loopback

These additions make A1LB identical to A2LB. A1LB is given a separate identity to allow future DS1/E1 enhancements to be added without affecting A2LB.

A5LB differs from A2LB in that A5LB does not block the arming code from exiting the H2TU-C-388 into the network. A1LB and A2LB can be configured to do one of the following:

• Block the arming code (after 2 seconds) from exiting the H2TU-C into the network, and replace it with the

AIS code.

• Unblock the AIS code by executing the Far-End Activate code. (Since A5LB never blocks the arming code

from exiting the H2TU-C, the Far-End Activate code is not available in A5LB.)

A3LB differs from A4LB in that A3LB supports the additional (1-in-6) SMJK loopback command.

H2TU-C-388 List 1 June 6, 2000 41

Testing 152-388-100-02, Issue 2

Manual Loopback Session

A manual loopback session allows you to select any one of the HiGain loopbacks listed in Table 15 on page 40 with the exception of SmartJack loopbacks, which can only be issued by inband commands.

Setting the Loopback Time-out Option

Before initiating a loopback session, verify that the Loopback Time-out parameter is set to the desired settin g. 1 Use the MODE and SEL buttons as described in “Setting Options through MODE and SEL” on page 9.

(The Loopback Time-out parameter is also user-selectable from the System Settings screen when using a maintenance terminal.)

2 Select the desir e d se tting:

• NONE (time-out disabled)

• 20 minutes

• 60 minutes (default setting)

• 120 minutes

Activating Manual Loopback Mode

With the exception of SmartJack, any of the Hi Gain loopbacks can be exec uted using the M ODE and SEL buttons.

When executing a manual loopback session using the MODE and SEL buttons:

• The next loopback option can be displayed by pressing the MODE button, however, the previously activated loopback remains active until the SEL button is pressed, which activates the new loopback.

• If neither button is pressed for a period of 30 seconds and no loopback is in effect, the manual loopback session terminates and the display returns to normal mode.

• If any loopback is in e ffect, the 30-second time-out is inhib ited . The ac tive loop back and the manual loopback session continue until the loopb ack times out in acc ordance with the LBTO setting.

• If there is an active loopback, pressing the MODE and SEL buttons for 3 or more seconds terminates any active lo opba ck, ends the manual loop back s ess ion, and returns the display to normal mode.

To initiate a manual loopback session: 1 Press both the MODE and SEL buttons on the front panel for at least 5 seconds. The following message

appears on the front-panel display:

MAN LPBK NLO?

2 Press SEL to activate NLOC. The display changes to MAN LPBK NLOC. 3 Press MODE to advance to the next available loopback:

• NRE? = NREM

• CRE? = CREM

• CLO? = CLOC

• COL? = dual loopback at H2TU-C.

• RUL? = dual loopback at H2TU-R.

42 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

4 Press SEL to activate the selected loopback. The previous loopback is terminated. Once a loopback is selected and activated, the loopback stays active until it times out (based on the LBTO setting).

When a loopback times out, the display then returns to the normal display mode. You can terminate loopbacks manually and exit the MAN LPBK mode by simultaneously pressing the MODE and

SEL buttons for 3 or more seconds. If no loopback is active, the MAN LPBK mode automatically terminates after 30 seconds.

All loopbacks (except dual loopbacks) can be in itiated by inban d comman ds in th e DS1 payload . Lo op backs can also be initiated by a command from the HiGain system (front-panel buttons or maintenance screen selections). Therefore, whenever a loopback is active, the method by which it was activated is indicated in the Loopback and Status screens by the annotation HG or PL adjacent to the id entified loopback. For exam ple, NREM-HG indicates that the loopback was initiated by the HiGain system.

SMJK loopback commands ar e only activated by in band commands. Dua l loopback comman ds are only activated by the front-panel buttons or maintenance screen selections.

LOOPBACK TEST PROCEDURES

The following sections provide step-by- step test p roced ures fo r ver ifying the integ rity of the HDSL2 channels at every module location as well as the DS1 channels to the customer and the local DSX-1 interface.

General Troubleshooting Tips

If trouble is encountered on the DSX-1 interface of the H2TU-C-388, verify that the:

• H2TU-C is making a positive connection with its mounting-asse m bly ( sh e lf ) connecto r.

• H2TU-C internal equalizer is set to the correct distance range per Table 5 on page 17. All equalizers should

be set to the distance from the DSX-1 to the shelf.

The transmit and receive DSX-1 ports have splitting access jacks and miniature, 210-series, monitor jacks as shown in Figure 1 on page 3. Connecting one cable between the two monitoring jacks and another between the two LINE jacks splits the IN and OUT and creates metallic loopbacks towards both the DSX-1 and the H2TU-C-388. If separate plugs are inserted into both LINE jacks with the other end disconnected, the MON jacks can be used to send and receive test patterns towards the DSX-1.

GNLB Test Procedures

Figure 27 on page 44 is a graphical representation of the various loopback configurations with the associated

GNLB commands shown. Also, refer to Table 15 on page 40 for a description of these commands. To perform the GNLB loopback test procedure: 1 Have the CO tester send the NREM (3-in-7) inband loopup code for 5 seconds. You should be able to observe

the NREM message on the front-panel display. (Th e Status LED o n the fr ont pa nel sh ould be gr een, an d the loopback mode should also be identified on the Span Status screen.)

2 Have the CO tester transmit a DS1 test signal towards the H2TU-C-388 and verify that the returned (looped)

signal to the test set is error-free.

3 If step 2 fail s, hav e the CO tester transmit the 3-in-5 inband loopdown code.

H2TU-C-388 List 1 June 6, 2000 43

Testing 152-388-100-02, Issue 2

4 Have the CO tester send the NLOC (4-in-7) inband loopup for 5 seconds. You should be able to observe the

NLOC message on the front-panel display. (The Status LED on the front panel should be yellow, and the loopback mode should also be identified on the Span Status screen.)

5 Repeat Step 2. If the test passes, the problem is in the downstream direction. If it fails, the problem is in the

upstream direction.

Figure 27. Loopback Modes

44 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

A1LB, A2LB, and A5LB Test Procedures

Using the codes listed in Table 16, a network tester can activate NLOC, NRG or NREM loopbacks (or SMJK, if enabled). A tester at the customer premises can activate C LOC, CRG, or CREM loop backs. All loopbacks shown in Table 16 can also be initiated from the H2TU-C-388 front-panel MODE and SEL buttons (see “Setting Options

through MODE and SEL” on page 9).

Table 16. Add r essable Rep eater Loopbac k Commands (A1LB, A2LB, A5LB)

Name Description Binary Code

(a)

(Hexadecimal Equivalent)

ARMING or NI LPBK (inband) Arming code 11000-11000 ... ARMING or NI LPBK (ESF Data Link) Arming code 1111-1111-0100-1000 (FF48) IR LPDN or DISARM (i nband) Disarming code 11100-11100 ... IR LPDN or DISARM (ESF Data Link) Disarming cod e 1111-11 11-0010-0100 (FF24) IOR LPBK (NLOC and CREM)

230-232 bit errors 229-231 bit errors

(b)

IR LPDN Loopdown (H 2TU-C, H2RU, or

H2TU-C loopup 1101-0011-1101-0011 (D3D3)

1001-0011-1001-0011 (9393)

H2TU-R) IR QUERY LPBK Query loopback 1101-0101-1101-0101 (D5 D5) IR ALTERNATE QUERY LPBK Alternate query loopback 1101-0101-1110-1010 (D5EA) TIME-OUT OVERRIDE Loopback time-out override 1101-0101-1 101-0110 (D5D6) FAR-END NI ACTIVATE IOR POWER DOWN (H2TU-C)

(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably with a random 10-3 BER on the facility.

The entire arming and loopback sequence can also be initiated at the remote H2TU-R location.

(b) The H2TU-R identifies CREM (and the H2TU-C identifies NLOC) with 231 bit errors, including the frame bits. When framed

data is being sent in the Auto framing mode, the number of the 231 bit errors detected by the test set varies from 229 to 231, depending on whether or not the test set counts frame errors as bit errors and on the number of frame bits contained in the block of 231 error bits. The H2TU-R and H2TU-C generate this bit pattern in a series of discontinuous bursts containing 20-bit errors each, including frame bits. Those test sets that do not count frame error bits as data bit errors will indicate fewer bits

than the H2TU-R and H2TU-C transmit for a CI and NI loopback. (c) Sending the Far-End NI Activate code is not required in A5LB because it is always activated. (d) The IOR Power Down code must remain present for the duration of the powerdown mode. When this code is removed, the

HiGain system returns to its normal unlooped and unarmed state.

(c)

(d)

Unblock AIS 1100-01 01-0101-0100 (C554) Removes HDSL2 line power 0110-0111-0110-0111 (67 67)

To perform the A1LB, A2LB, and the A5LB test procedures:

1 Send the inband Arming and NI LPBK code 11000 to the H2TU-C-388 for at least 5 seconds. 2 Monitor the output of the H2TU-C-388 for the return of the pattern. Return of the pattern indicates one of the

following:

• the H2TU-R has looped up (if the SMJK Loopback option is enabled)

• an external NID has looped up ( if the SMJK Loopback option is disabled), and the H2TU-C and H2TU-R

have been armed.

3 Verify, if possible, that the H2TU-R Loopback LED is either flashing yellow at 4 times per second (indicating

that the system is armed), or is a steady yellow (indicating that it is both armed and in SMJK loopback). The H2TU-C Status LED also flashes yellow when the system is armed.

If the Arming code is not returned after 5 seconds, the system may be armed but there is no active loopback.

H2TU-C-388 List 1 June 6, 2000 45

Testing 152-388-100-02, Issue 2

4 Once armed, the H2TU-C-388 can be looped back by sending Intelligent Office Repeater (IOR) LPBK

activation code 1101-0011-1101-0011 (D3D3) for at least 5 seconds. You should observe the following activation response pattern in the order presented:

a 2 seconds of AIS (all ones patt ern) b 2 seconds of ret urning data pattern c Logic errors (including the frame bit) occurring in the returned pattern comprising:

– 231 errors, if IOR LPBK (H2TU-C-388) was sent – 20 errors, if ILR-2 (H2TU-R) was sent

d normal looped data This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent. This also applies

to ILR, Time-out Override, and Query commands. The H2TU-C is now in logic loopback if the IOR NLOC loopback command was sent. The Time-out

Override command or a Loopdown comman d can override the selection mad e for the loopback time- out (see

“Setting the Loopback Time-out Option” on page 42). If the Time-out Override code 1101-0101-1101 -0110

(D5D6) is received after activating a loopback, then the automatic timed expiration of the loopback is inhibited. If this Time-out Override is sent, then the only way to loop the H2TU-C-388 down is to do one of the following:

• issue the Intelligent Repeater (IR) loopdown (LPDN) code 1001-0011-1001-0011 (9393)

• issue the NI LPDN and Disarm inband code 11100 or the ESF-DL code (FF24).

The Time-out Override function is only valid for the current active loopback. The automatic time-out timer is restored during subsequent loopback sessions.

5 Once the test is complete, do one of the following:

• If the system is to loop down but remain Armed, send the IR LPDN code.

• If all the equipment is to be looped down, disarmed, and returned to normal operation, send the disarm

inband code 11100 or the ESF-DL code (FF24).

The Armed mode has an automatic time-out of 60 minutes but this timer is reset to 60 for any of the following events:

• Loopback terminates (manua lly or time-out)

• Query

• Alternate query

• Far End activate

• Another ARM command

This timer is inhibited while any of the valid command codes are being sent. Once the codes are removed, the timer restarts at 60.

46 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Testing

A3LB and A4LB Test Procedures

The H2TU-C-388 can be looped back by sending the Ad dressable Office R epeater (AOR) LPBK activation cod e 1111-1111-0001-1110 (FF1E) for at least 5 seconds . This cause s the H2TU-C-38 8 to enter the NLOC state. The Loopback Time-out setting (see “Setting the Loopback Time-out Option” on page 42) determines the duration of this loopback unless it is overridden by the reception of a s econd identical 16-bit loopup command before the timer expires. When this time-out override state exists, the only way to loop the H2TU-C-388 down is to issue one of the three loopdown commands listed in Table 17. The automatic time-out mode is restored during subsequent loopback sessions.

Table 17 summarizes the codes required to execute Addressable 3 (A3LB) and Addressable 4 (A4LB) repeater

loopback commands. All code sequences must be present for at least 5 seconds.

Table 17. Addressable Repeater Loopback Commands (A3LB and A4LB)

Name Description Binary Code

NLOC H2TU-C-388 loopup from NI 1111-1111-0 001-1110 (FF1E) CREM H2TU-C-388 loopup from CI 0011-1111-0001-1110 (3F1E) NREM H2TU-R loopup from NI 1111-1111-000 0-0010 (FF02) CLOC H2TU-R loopup from CI 0011-1111-0000-0 010 (3F02) SMJK H2 TU-R loopup from NI 11000-11000-11000 ... SMJK H2 TU-R loopup from NI SMJK H2TU-R loopup from NI (ESF-DL) 1111-1111-010 0-1000 (FF48) Loopdown H2TU-C and H2TU-R loopdown from NI OR CI 11100-11100-11100 ... Loopdown H2TU-C and H2TU-R loopdown from NI OR CI 100-100-100 ... Loopdown H2TU-C and H2TU-R loopdown from NI OR CI (ESF-DL) 1111-1111- 0010-0100 (FF24)

(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably with a random 10-3 BER on the facility.

The entire arming and loopback sequence can also be initiated at the remote H2TU-R location. (b) Not supported by A4LB.

(b)

100000 100000 100000 ...

(a)

(Hexadecimal Equivalent)

H2TU-C-388 List 1 June 6, 2000 47

Appendix A - Specificati ons 152-388-100-02, Issue 2

APPENDIX A - SPECIFICATIONS

Power

Line Voltage 0, -185 Vdc CO Supply -48 Vdc nominal (-42.5 Vdc to -56.5 Vdc)

(See “Power Consumption” and “Maximum Power Dissipation” and “Maximum

Current Drain” on page 49.)

Electrical Protection Secondary surge and power cross protection on HDSL2 ports. Requir es external

Fusing Internal; connected to “F USE ALARM” output on pin 117

Environmental

Operating Temperature -40 °F to +149 °F (-40 °C to +6 5 °C) Operating Humidity 5% to 95% (non-condensing)

Physical

Height 3.62 in. (9.2 cm) Width 0.69 in. (1.8 cm) Depth 10 in. (25. 4 cm) Weight 0.5 lbs. (.23 kg) Mounting DDM+ high-density shelf

HDSL2

primary protection.

Line Rate 1.552 M bps Over lap ped Pulse Amp li tude Mo dula tion Tran sm issi on w ith Inte rloc king

Transmission Fu ll duplex Media One non-loaded, copper, two-wire cable pa ir Output +16.8 dBm ±0.5 dB at 135Ω (0-450 kHz) at CO side;

Line Impedance 135 Ω Maximum Loop Attenuation 35 dB at 196 kHz, 135Ω Start-up Time 30 seconds (typical), 1 minute (maximum)

DSX-1

DSX-1 Line Impedanc e 100 Ω DSX-1 Line Rate 1.544 Mbps ±200 bps DSX-1 Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS) DSX-1 Frame Format E xtended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR) DSX-1 Pulse Output 6 V DSX-1 Input Level +1.5 to -7.5 dB DSX

System

One-way DS1 Delay <400 µs over the span Wander (Looped) Meets MTIE T1.101 requirement s Wideband Jitter (Looped) 0.2 UI maximum Narrowband Jitter (Looped) 0.1 UI maximum

Spectra (OPTIS)

+16.5 dBm ±0.5 dB at 135Ω (0-350 kHz) at remote side

pk-pk

pre-equalized for 0 to 655 feet of ABAM cable

48 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Appendix A - Specifications

POWER CONSUMPTION

The maximum power consumption and heat dissipation dep ends up on the type o f rem ote un its in the system an d the CPE power setting.

The three most important power parameters of an H2TU-C are its maximum power consumption, its maximum power dissi pation and its maximum current drain.

Table 18 describes line-powered circuits on 9 kft, 26 AWG loops.

Table 18. H2TU-C-388 Power Parameters

-48 Vdc Power Consumption

(Watts)

Remote Power Source Maximum Maximum Maximum

Line powered 12.5 7.0 294.0 Local powered 5.0 5.0 117.0

Heat Dissipation

(Watts)

-42.5 Vdc Current (mA)

MAXIMUM POWER DISSIPATION

The maximum power dissipation measures the power that is converted into heat that builds up within the unit. It contributes to the total heat generated in the space around the unit. It is used to determine the maximum number of fully loaded shelves per bay that does not exceed the maximum allowable power dissipation density in watts per square foot to comply with GR-63.

In COs, the maximum power dissipation for open-faced, natural convection-cooled mountings is limited to

134.7 watts per square foot per GR-63-CORE. The footprint of a standard 28-slot, 23-inch HMS-317 shelf is

7.024 square feet. Therefore, the maximum bay dissipation is limited to 946 watts. Use this lim it and the parameters in Table 18 to determine the maximum number of H2TU-C circuits that can occupy one CO bay.

This is a worst case situation sinc e it assumes the entire CO is subjected to the ma ximum power density. More favorable conditions would permit increasing the number of shelves per bay without jeopardizing the CO thermal integrity.

The thermal loading limitations imposed when using the H2TU-C in a Controlled Environmental Vault (CEV) or other enclosures are determined by applying its power parameters to the manufacturer's requirements for each specific housing.

The -48 Vdc power consumption is the maximum total power that the H2TU-C-388 consumes or draws from the shelf power source. This parameter is needed when the H2TU-C-388 is in a location remote to the CO it is serving. It determines the battery capacity required to m aintain an 8-hour, standby battery reserve for emergency situations. Battery capacity, therefore, limits the maximum number of line units which can be installed in a remote enclosure. Use the data in Table 18 to perform this analysis.

MAXIMUM CURRENT DRAIN

The maximum current drain is the maximum cu rrent drawn from the shelf power supply when it is at its minimum voltage (-42.5 determine the shelf fusing requirements for your particular H2TU-C applications.

H2TU-C-388 List 1 June 6, 2000 49

Vdc). This determines the shelf fusing r equir ements . Us e the -42. 5 Vdc current data in Table 18 to

Appendix A - Specificati ons 152-388-100-02, Issue 2

LOOP ATTENUATION

Each loop has no more than 35 dB of loss at 196 kHz, with driving and terminating impedances of 135Ω (see

Table 19 below).

Table 19. HD SL2 Cable Attenuation Chart

Cable Gauge Loss at 196 kHz (dB/kft) Ω per kft

26/0.4 mm 3.88 83 24/0.51 mm 2.84 52 22/0.61 mm 2.18 32 19/0.91 mm 1.54 16

HIGAIN LINE UNIT CARD-EDGE CONNECTOR

Figure 28 shows the card-edge connectors on the HiGain Line Unit. Active pins are highlighted in black.

219

Ground

218

-48Vdc

217 216 215 214 213 212

211 210 209 208

207 206 205

204 203 202

201 200

* Fuse alarm is normally floating (0 to 80 Vdc max.) and

at -48 Vdc (10 mA max.) when activated.

Figure 28. HiGain Line Unit Card-Edge Connector

Network Management Control Bus

Frameground

119 118

Ground

117

Fusealarm*

116

Ring1

115 114

Tip1

113 112 111 110

Ring Tip

109 108

Factoryburn-in

107 106 105

Management bus

104 103

Ring1

102

Tip1

101 100

DSX-1OUT

DSX-1IN

HDSL2Span

The H2TU-C-388 provi des a Network Management Control Bus on pin 104 o f t he card-edge connector. This allows the various ADC Management System protocols to manage the H2TU-C through the HMU-319 HiGain Management Unit. Whenever the H2TU-C-388 is under manageme nt, the MNGD message displays periodically on the front-panel display.

Some HiGain Line Unit features are affected when it is under management. Consult the management unit practice for further information.

50 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Appendix A - Specifications

Fuse Alarm

Pin 117 on the card-edge connector is a fuse alarm that is driven to -48 Vdc through a diode whenever its onboard fuse opens.

CRAFT PORT

Figure 29 shows the craft port adapter and its connection to a DB-9 or DB-25 connector on a maintenance

terminal.

Figure 29. 210-to-DB-9 Adapter

H2TU-C-388 List 1 June 6, 2000 51

Appendix B - Functional Operation 152-388-100-02, Issue 2

APPENDIX B - FUNCTIONAL OPERATION

ADC HDSL2 technology provides full-duplex services at standard DS1 rates over copper wires between an H2TU-C and an H2TU-R, which comprise one HiGain system. HiGain systems use ADC Overlapped PAM Transmission with Interlocking Spectra (OPTIS) transceiver systems to establish full-duplex, 1.552 kbps data channels between the H2TU-C-388 List 1 and a remotely located H2TU-R.

Figure 30 shows a block diagram of the H2TU-C-388 List 1. The H2TU-C-388 List 1 receives a 1.544 Mbps

DSX-1 data stream from the DSX-1 digital cross connect interface. The H2TU-C-388 contains a DS1 frame synchronizer controlled by an 8-bit microprocessor that determines the type of framing on the DS1 stream and synchronizes to it. The H2TU-C-388 recognizes Superframe (SF), includ ing D4, or Extend ed Super frame ( ESF) framing.

Ring

DSX-1IN

FrameGND

110 109

Tip

119

FRAMER

HDSL2 Framer

HDSL1

XCVR

104

Fuse alarm 117

-48Vdc

GND218,118

TIMING

DSX-1 OUT

217

Tip1

114 115

Ring1

ManagementBus

POWER SUPPLY

PRE-

EQUALIZER

SELECT

MICROPROCESSOR

MODE

SEL

LEDs

RS-232 (front panel)

Figure 30. H2TU-C-388 List 1 Block Diagram

-185VdcHDSL LineVoltage

PowerSupply

(GroundIsolated

andGroundFault

Detect)

Tip1

101

HDSL2

SPAN

102

Ring1

The low loop wander (0.5 UI max) of an H2TU-C-388, when used with a compatible remote unit, allows the circuit to be used in all critical timing applications, including those that are used to transport Stratum 1 timing.

GROUND FAULT DETECT

The H2TU-C-388 has a Ground Fault Detect (GFD) circuit which detects a ground or a resistive path to ground on any wire of the HDSL2 loop. This makes the product compliant with the Class A2 requirements of GR-1089.

52 June 6, 2000 H2TU-C-388 List 1

152-388-100-02, Issue 2 Appendix C - Compatibility

APPENDIX C - COMPATIBILITY

The HiGain system uses HDSL2 transmission technology as recommended by ANSI committee in compliance with the August 1999 T1-E1.4/99-006R5 HDSL2 standards.

The H2TU-C-388 List 1 is compatible with the following DDM+ high-density shelves and associated equipment:

• HCS-402, two-slot shelf with #150-1193-01 adapt er

• Shelf (23-inch) – Larus FT2 1188 (28-slot, connectorized) – AT&T DS1 Ext. (28-slot, connectorized)

• Shelf (19-inch) – Larus FT21187 (20-slot, connectorized)

• Cabinet Distant Terminal (23-inch) – Larus FT2 1190 (12 slots) for a 51A cabinet.

H2TU-C-388 List 1 June 6, 2000 53

Appendix D - Product Suppo rt 152-388-100-02, Issue 2

APPENDIX D - PRODUCT SUPPORT

ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products. Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center

(TAC).

Sales Assi st ance

800.366.3891 extension 73000 (USA and Canada)

952.917.3000 Fax: 952.917. 3237

Systems Integration

800.366.3891, extension 73000 (USA and Canada)

952.917.3000

ADC Technical Assistance Center

800.638.0031

714.730.3222 Fax: 714.730. 2400 Email: wsd_support@adc.com

Online Technical Support Online Technical Publications

• Quotation Proposals

• Ordering and Delivery

• General Product Informa tio n

• Complete Solutions (from concept to

installation)

• Network Design and Integration Testing

• System Turn-Up and Testing

• Network Mo nitor ing (ups tream or dow nstream)

• Power Monitoring and Remote Surveillance

• Service/Maintenance Agreements

• Systems Operation

• Technical Information

• System/Network Configuration

• Product Specification and Application

• Training (product-specific)

• Installation and Operation Assistance

• Troubles ho oting and Repair/Field Assistance

• www.adc.com/Knowledge_Base/index.jsp

• www.adc.com/library1/

Product Return Department

800.366.3891 ext . 73748 or

952.917.3748 Fax: 952.917. 3237 Email: repair&return@adc.com

All 800 lines are tol l-free in the USA and Canada.

54 June 6, 2000 H2TU-C-388 List 1

• ADC Return Material Authorization (RMA) number and instructions must be obtained before returning products.

152-388-100-02, Issue 2 Appendix E - Abbreviations

APPENDIX E - ABBREVIATIONS

ACO: Alarm Cutoff AIS: Alarm Indication Signal ALM: Alarm AMI: Altern ate Mark Inv ersion AWG: American W ire Gauge

B8ZS: Bipolar with 8-Zero Substitution B8ZSS: B8ZS Monitored Second s BER: Bit Error Rate BPV: Bipola r Violation BPVT: Bipolar Violation Transparency

CI: Customer Installat ion CLEI: Co mmon Language Equipment Identifier CLOC: Customer Local Loopback CO: Central Office CPE: Customer Premises Equi pment CRC: Cyclical Redundancy Check CREM: Customer Remote Loopback CSA: Carrier Service Area CV: Code Violation

DBER: DS1 Bit Error Rate DDS: Digital Data Service DLC: Digital Lo op Carrier DS1: Digital Sign al, level 1 DSX-1: DS1 Cross-Connect Frame

HDSL2: High-bit-rate Digital Subscriber Line 2 HMS: HiGain Management Shelf HMU: HiGain Management Unit

ID: Identification ILR: Intelligent Line Repeater IN: Transmit IOR: Intelligent Office Repeater IR: Intelligent Repeater

LA: Loop Attenuation , LED: Light Emitting Diode LOS: Loss of Signal LOSW: Loss of Sync Word LOSWS: Loss of Sync Word Second LPF: Line Power Feed

MSEC: Monitored Seconds

NI: Network Interface NID: Network Interface Device NLOC: Network Local Loopback NMA: Network Management and Admi ni stration NREM: Network Remote Loopback NVRAM: Non-Volatile Random Access Memory

ECI: Equipment Catalog Item , ES: Errored Seconds , ESD: Electrostatic Discharge ESF: Extended SuperFrame ES-L: Errored Seconds - Line ES-P: Errored Seconds - Path

OPTIS: Overlapped PAM Transmission with Interlocking Spectra OUT: Receive

PAM: Pulse Amplitude Modulation PRM-FE: Performance Report Messaging - Far End PRM-NE: Performance Report Messag ing - Near End PWRF: Power Feed

GNLB: Generic Loopback

H2TU-R: HiGain Remote Unit HBER: HDSL2 Bit Error Rate HCDS: High Capacity Digital Service HCS: HiGain Card Shelf

H2TU-C-388 List 1 June 6, 2000 55

RDA: Remote Disconnect Alarm RLOS: Remote Loss of Signal

SES: Severely Errored Seconds , SES-L: Severely Errored Seconds - Line

Appendix E - Abbrevia ti ons 152-388-100-02, Issue 2

SES-P: Se verely Errored Seconds - Path SF: SuperFrame SMJK: SmarkJack SPLB: Special Loopback

TLOS: Transmit Loss of Signal

UAS: Unavailable Seconds

56 June 6, 2000 H2TU-C-388 List 1

CERTIFICATION AND WARRANTY

FCC CLASS A COMPLIANCE

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provi de reasonable protection against harmful interference when the equipm ent is operated in a comme r c ial environment. This equi pm ent generates, uses, and can radi at e radio frequency energy and, if not installed and used in a cco rdance with the instruction manual, may cause harmful interferen ce to ra dio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user w ill be required to correct the interference at his own expense.

LIMITED WARRANTY

ADC DSL System s , In corporated (“ADC”) wa rra nts that, for a period of sixty (60) months fro m t he da t e of shi pm ent, the hardware portion of its products will be free of material defects and faulty workmanship under normal use. ADC's obligation, under this warranty, is limited to replacing or repairing, at ADC's option, any such hardware product which is returned during the 60-month warranty period per ADC's instructions and which produc t is confirmed by ADC not to comply wi th the fore going warranty.

ADC warrants that, for a period of 90 days from the date of purchase, the so ftware furnished with its products w ill operate substantially in accordance wit h th e A DC published specifications and document ation for such softwar e. ADC’s entire liability for software that doe s not comply with the foregoing warranty and is reported to AD C during the 90-day warranty period is, at ADC’s opti on, ei th er (a) return of the price paid or (b) repair or replace of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media on which software is stored will be free from material defects under normal use. ADC will replace defective media at no charge if it is returned to ADC during the 30-day warranty period along with proof of the date of shipment.

The transportation charges for shipment of returned produc ts t o A D C w ill be pre paid by the Buyer. ADC will pay transp ort at io n charges for shipment of replacement products to Buyer, unless no troubl e is found (NTF), in which case t he Buyer will pay transportation charges.

ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any product which has been repaired, worked upon, or altered by persons not authorized by ADC or in ADC's sole judgment has been subjected to misuse, accident, fire or other casualty, or operation beyond its design rang e.

Repaired products have a 90-day warranty, or until th e end of the original warranty period—whichever period is greater. ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS. FURTHER, ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE RESULTS OF THE USE , OF THE SOFTWARE IN TERMS OF CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.

MODIFICATIONS

Any changes or modifications made to this device that are not expressly approved by ADC DSL Systems, Inc. voids the user's warranty. All wiring external to the pr oducts should follow the provisions of the current edition of the Na tional Electrical Code.

SAFETY STANDARDS COMPLIANCE

The H2TU-C-388 modules have been tested and verified to comply with the applicable sections of the following safety standards:

• GR 63-CORE - Network Equipment-Building Syste m (N EBS) Requirements

• GR 1089-CORE - Electromagnetic Co m patibility and Electrica l Saf et y

• UL-1459, 3rd Edition and CSA C22.2 225-M90 : Tel ec om m uni cations Equipment – Electronics and Electrical Safety

For technical assistance, refer to “Appendix D - Product Support” on page 54

ADC DSL Systems, Inc.

14402 Franklin Avenue Tustin, CA 92780-7013

Tel: 714.832.9922 Fax: 714.832.9924

Technical Assistance

Tel: 800.638.0031 Tel: 714.730.3222 Fax: 714.730.2400

ISO9001/TL9000

DNV Certificat ion, Inc.

REGISTERED FIRM

DOCUMENT: 152-388-100-02, ISSUE 2

´,.G¶1:¨

1214391

ADC H2TU-C-388 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

OVERVIEW

FEATURES

COMPATIBILITY

APPLICATIONS

FRONT PANEL

INSTALLATION

VERIFICATION

Verification without a Downstream Device

Verification with a Downstream Device

PROVISIONING

USING THE MODE AND SEL BUTTONS

Setting Options through MODE and SEL

Resetting to Factory Default Values

Displaying System Parameter Settings

Loopback Modes

USING A MAINTENANCE TERMINAL

Connecting to a Maintenance Terminal

The Logon Screen

PROVISIONING TASKS

Setting Date and Time

Setting Circuit ID Numbers

Configuring the System

Clearing the History, Alarm, and Event Log Screens

Monitoring System Activity and Pe rformance 152-388-100-02, Issue 2

USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY

USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA

Performance History at the DS1 Interface

Performance History at the HDSL2 Interface

USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA

Alarm History at the DS1 Interface

Alarm History at the HDSL2 Interface

USING THE EVENT LOG TO TRACK SYSTEM EVENTS

TESTING

FRONT-PANEL SYSTEM ALARMS

Alarm Option for DLC Feed

Retiring System Alarms

Remote LOS and AIS Response

OCT55 TEST PATTERN WITH AMI LINE CODE

LOOPBACK OPERATION

Generic Loopback Commands

Special Loopback Commands

Manual Loopback Session

LOOPBACK TEST PROCEDURES

General Troubleshooting Tips

GNLB Test Procedures

A1LB, A2LB, and A5LB Test Procedures

A3LB and A4LB Test Procedures

APPENDIX A - SPECIFICATIONS

POWER CONSUMPTION

MAXIMUM POWER DISSIPATION

MAXIMUM CURRENT DRAIN

LOOP ATTENUATION

Figure 28. HiGain Line Unit Card-Edge Connector

Network Management Control Bus

Fuse Alarm

CRAFT PORT

Appendix B - Functional Operation 152-388-100-02, Issue 2

TIMING

GROUND FAULT DETECT

APPENDIX C - COMPATIBILITY

Appendix D - Product Suppo rt 152-388-100-02, Issue 2

APPENDIX E - ABBREVIATIONS

CERTIFICATION AND WARRANTY