Adtran Hdsl2 Users Manual 61223HDSL2L2 5B

HDSL2 to the manual aae1b2c6-3efb-b614-51a8-ce6b6da78327

2015-01-24

: Adtran Adtran-Hdsl2-Users-Manual-345011 adtran-hdsl2-users-manual-345011 adtran pdf

Open the PDF directly: View PDF .
Page Count: 90

HDSL2 for General Distribution Installation and Maintenance Practice

HDSL2 for General Distribution

Installation and Maintenance Practice

Document Number: 61223HDSL2L2-5B

June 2005

Part Number Description CLEI

1181113L2 Total Access 3000 H2TU-C T1L71YLA_ _

1223001L2 220/E220 HDSL2 H2TU-C T1L722MA_ _

1223003L2 DDM+ HDSL2 H2TU-C T1L734NA_ _

1223004L2 3192 HDSL2 H2TU-C T1L746PA_ _

1223004L12 3192M HDSL2 H2TU-C T1L9DEFA_ _

1223024L2 T200 HDSL2 H2TU-R, Local/Span/60 mA Power T1L8EJEC_ _

1223026L2 T200 HDSL2 H2TU-R, Span Powered T1L8KMJC_ _

1181113L2

DSL

DSX/DS1

ALM

B8ZS/AMI

(YEL) (GRN)

ESF/ SF

(YEL) (GRN)

LBK

REM

LOC

1223026L2

DSL

DS1

ALM

ESF/ SF

B8ZS / AMI

LLB / RLB

(YEL) (GRN)

DS1HDSL2DSX-1

HDSL2 for General Distribution Installation and Maintenance Practice

ii 61223HDSL2L2-5B

Front Matter

Trademarks

Any brand names and product names included in this manual are trademarks, registered

trademarks, or trade names of their respective holders.

HiGain® is a registered trademark of ADC Telecommunications, Inc.

To the Holder of the Manual

The contents of this publication are current as of the date of publication. ADTRAN® reserves

the right to change the contents without prior notice.

In no event will ADTRAN be liable for any special, incidental, or consequential damages or for

commercial losses even if ADTRAN has been advised thereof as a result of issue of this publi-

cation.

901 Explorer Boulevard

P.O. Box 140000

Huntsville, AL 35814-4000

(256) 963-8000

Printed in U.S.A.

HDSL2 for General Distribution Installation and Maintenance Practice

61223HDSL2L2-5B iii

Revision History

Conventions

The following typographical conventions are used in this document:

This font indicates a cross-reference link. First-time references to tables and figures are

shown in this font.

This font indicates screen menus, fields, and parameters.

THIS FONT indicates keyboard keys (ENTER, ESC, ALT). Keys that are to be pressed simulta-

neously are shown with a plus sign (ALT+X indicates that the ALT key and X key should be

pressed at the same time).

This font indicates references to other documentation and is also used for emphasis.

This font indicates on-screen messages and prompts.

This font indicates text to be typed exactly as shown.

This font indicates silkscreen labels or other system label items.

This font is used for strong emphasis.

NOTE

Notes inform the user of additional but essential information or

features.

CAUTION

Cautions inform the user of potential damage, malfunction, or dis-

ruption to equipment, software, or environment.

WARNING

Warnings inform the user of potential bodily pain, injury, or death.

Revision Date Description of Changes

ANovember 2004 Initial release

BJune 2005 Add new product: 1223004L12, 3192M H2TU-C;

Edits to front panel graphics to add TScan; power descriptions; compatibility state-

ments; appearance

HDSL2 for General Distribution Installation and Maintenance Practice

iv 61223HDSL2L2-5B

Training

ADTRAN offers training courses on our products. These courses include overviews on product

features and functions while covering applications of ADTRAN’s product lines. ADTRAN

provides a variety of training options, including customized training and courses taught at our

facilities or at customer sites. For more information about training, please contact us.

Training Phone: 800-615-1176, ext. 7500

Training Fax: 256-963-6700

Training Email: training@adtran.com

61223HDSL2L2-5B v

Contents

Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

H2TU-C Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

H2TU-R Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Powering Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

H2TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

H2TU-R Span Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

H2TU-R Local Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Total Access 3000 and 220/E220 H2TU-C Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

All Other Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Total Access 3000 H2TU-C Edge Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Provisioning Options, Total Access 3000 H2TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

HDSL2 System Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

H2TU-C Bantam Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

H2TU-R Bantam Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

H2TU-R Front Panel Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

H2TU-C Front Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Control Port Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Terminal Emulation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Logon to Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Logon to Main Menu, Total Access 3000 H2TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

HDSL2 Unit Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Total Access 3000 H2TU-C Provisioning Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Span Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Status Screen Legend Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Detailed Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Total Access 3000 H2TU-C Auto In Service Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Loopbacks and Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Total Access 3000 H2TU-C Loopback and Test Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

BERT Test Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Performance History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Contents HDSL2 for General Distribution Installation and Maintenance Practice

vi 61223HDSL2L2-5B

Scratch Pad, Circuit ID, Time/Date Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Terminal Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

T1 Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

HDSL2 Span History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

HDSL2 Facility Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Event History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

System PM/Screen Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Clear PM and Alarm Histories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Troubleshooting Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Chronic Circuit Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

View Splice Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Splice Histogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Reset Splice Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Virtual Terminal Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Total Access 3000 H2TU-C Flash Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Boot Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

HDSL2 Deployment Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Appendix A

HDSL2 Loopbacks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

HDSL2 Loopback and Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Loopback Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

DDS Latching Loopback Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Loopback Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Appendix B

HDSL2 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

HDSL New Enhanced Feature Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

TScan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Splice Detection Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

Splice Detection Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

Screen Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

EOC Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

FDL Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3

EEPROM Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Event Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Splice Detection Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

Chronic Circuit Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4

View Splice Results Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

View Splice Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6

Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Using the Bad Splice Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8

Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

Fault (GFI, Short) Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9

HDSL2 for General Distribution Installation and Maintenance Practice Contents

61223HDSL2L2-5B vii

Fast Retrain Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10

Appendix C

Front Panel DSX and MUX Mode Test Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

DSX Mode Test Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

DSX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

DSX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

DSX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

MUX Mode Test Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

MUX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

MUX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

MUX EQ, Tx to Network, Rx from the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

MUX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

Appendix D

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Warranty and Customer Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

ADTRAN Sales . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

ADTRAN Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

ADTRAN Repair/CAPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Repair and Return Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1

Figures

Figure 1. ADTRAN HDSL2 Central Office Units for General Distribution . . . . . . . . . . . . . . . . . . . . . 2

Figure 2. ADTRAN HDSL2 Remote Units for General Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 3. HDSL2 Span Powering Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 4. HDSL2 Edge Connector Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. HDSL2 Edge Connector Wiring, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6. HDSL2 Edge Connector Wiring, continued . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 7. Bantam Jack Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 8. HDSL2 Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 9. RS-232 (DB-9) Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 10. ADTRAN HDSL2 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 11. Logon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 12. Total Access Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 13. Access Module Menus Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 14. Total Access 3000 H2TU-C Main Menu Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 15. ADTRAN Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 16. Provisioning Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 17. Provisioning Menu, Page 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 18. Provisioning Menu, Page 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Figure 19. Span Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Contents HDSL2 for General Distribution Installation and Maintenance Practice

viii 61223HDSL2L2-5B

Figure 20. Span Status Screen, Total Access 3000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Figure 21. Status Screen Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 22. Detailed Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 23. Auto In Service Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 24. Loopback and Test Commands Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Figure 25. Total Access 3000 H2TU-C Loopback and Test Commands Screen . . . . . . . . . . . . . . . 28

Figure 26. BERT Test Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 27. Select Data Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 28. BERT Test Functions - Enter Test Timeout Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 29. BERT Inject Errors Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Figure 30. Performance History, 15-Minute Line Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 31. Performance Data Definitions, Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 32. Performance Data Definitions, Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 33. Scratch Pad, Circuit ID, and Date/Time Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 34. Terminal Mode Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Figure 35. T1 Alarm History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 36. HDSL2 Span History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Figure 37. HDSL2 Facility Alarm History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Figure 38. Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Figure 39. System PM/Screen Report Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 40. Clear PM and Alarm Histories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Figure 41. Troubleshooting Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Figure 42. Troubleshooting Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Figure 43. General Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Figure 44. Chronic Circuit Problems Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Figure 45. View Splice Results Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Figure 46. Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 47. Virtual Terminal Control Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Figure 48. Total Access 3000 H2TU-C Flash Image Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Figure 49. Download H2TU-C via Y-Modem Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 50. Flash Upgrade, Y-Modem in Progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Figure 51. Download H2TU-C via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Figure 52. Boot Block Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Figure 53. HDSL2 Deployment Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure B-1. TScan Diagnostic Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2

Figure B-2. Chronic Circuit Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-4

Figure B-3. Splice Results Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6

Figure B-4. Splice Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7

Figure B-5. Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-9

Figure C-1. DSX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Figure C-2. DSX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2

Figure C-3. DSX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Figure C-4. MUX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Figure C-5. MUX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Figure C-6. MUX EQ, Tx to Network, Rx from Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Figure C-7. MUX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-5

HDSL2 for General Distribution Installation and Maintenance Practice Contents

61223HDSL2L2-5B ix

Tables

Table 1. HDSL2 Central Office Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. HDSL2 Remote Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 4. Compliance Codes, H2TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 5. Compliance Codes, H2TU-R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 6. Provisioning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Table 7. Total Access 3000 Additional Provisioning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Table 8. Front Panel Loopback Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 9. H2TU-C Front Panel LED Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 10. H2TU-R Front Panel LED Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Table 11. Auto In Service Status Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Table 12. HDSL2 Loss Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Table 13. H2TU-C Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Table 14. H2TU-R Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Table 15. H2TU-C Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Table 16. H2TU-R Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Table A-1. HDSL2 Loopback Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2

Table A-2. In-Band Addressable Loopback Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

Contents HDSL2 for General Distribution Installation and Maintenance Practice

x61223HDSL2L2-5B

61223HDSL2L2-5B 1

HDSL2 for General Distribution

PRODUCT DESCRIPTION

The HDSL2 modules referenced in this document are used to deploy a T1 circuit using 2-wire

metallic facilities.

HDSL2 provides extended range to DS1/T1 transport while providing spectral compatibility

with ADSL and other transport technologies. The ADTRAN HDSL2 Transceiver Unit for

Central Office (H2TU-C) works in conjunction with the ADTRAN HDSL2 Transceiver Remote

Unit (H2TU-R) to provide a DS1 service up to 12,000 feet on the local loop.

The H2TU-C receives DSX-1 signals, converts them and provides HDSL2 signals to the local

loop. The H2TU-R receives the HDSL2 signals from the H2TU-C and provides DS1 signals to

the customer.

Features available on these products are described in detail in “Appendix B, HDSL2 Features”.

Table 1 lists the ADTRAN HDSL2 Central Office modules approved for general distribution.

Table 2 lists the ADTRAN HDSL2 remote modules approved for general distribution.

Table 1. HDSL2 Central Office Modules

HDSL2 Module Part Number CLEI Code

Total Access 3000 HDSL2 Transceiver Unit for Central Office (H2TU-C) 1181113L2 T1L7HYLA_ _

220 HDSL2 Transceiver Unit for Central Office (H2TU-C) 1223001L2 T1L7J2MA_ _

DDM+ HDSL2 Transceiver Unit for Central Office (H2TU-C) 1223003L2 T1L7K4NA_ _

3192 HDSL2 Transceiver Unit for Central Office (H2TU-C) 1223004L2 T1L7L7PA_ _

3192M HDSL2 Transceiver Unit for Central Office (H2TU-C) 1223004L12 T1L9DEFA_ _

Table 2. HDSL2 Remote Modules

HDSL2 Module Part Number CLEI Code

T200 HDSL2 Transceiver Remote Unit (H2TU-R), Locally Powered 1223024L2 T1L8FJFC_ _

T200 HDSL2 Transceiver Remote Unit (H2TU-R), Span Powered 1223026L2 T1L8MOKC_ _

Product Description HDSL2 for General Distribution Installation and Maintenance Practice

261223HDSL2L2-5B

Illustrations

Figure 1 illustrates the front panels of the ADTRAN H2TU-C modules approved for general

distribution.

Figure 1. ADTRAN HDSL2 Central Office Units for General Distribution

220 H2TU-C

P/N 1223001L2

DDM+ H2TU-C

P/N 1223003L2

3192 H2TU-C

P/N 1223004L2

Total Access 3000

H2TU-C

P/N 1181113L2

1223001L2

1223003L2

DSX MON

DSX EQ

ALM

DSL

LBK

ESF

/SF

DSX

/DS1

B8ZS

/AMI

1223004L2

DSL TX

DSX

/DS1

ALM

LBK

ESF

/SF

B8ZS

/AMI

DSX EQ

DSX MON

1181113L2

DSL

DSX/DS1

ALM

B8ZS/AMI

(YEL) (GRN)

ESF/ SF

(YEL) (GRN)

LBK

1223004L12

DSL TX

DSX

/DS1

ALM

LBK

ESF

/SF

B8ZS

/AMI

DSX EQ

DSX MON

3192M H2TU-C

P/N 1223004L12

HDSL2 for General Distribution Installation and Maintenance Practice Product Description

61223HDSL2L2-5B 3

Figure 2 illustrates the front panels of the ADTRAN H2TU-R modules approved for general

distribution.

Figure 2. ADTRAN HDSL2 Remote Units for General Distribution

The H2TU-R is a T200 mechanics card which will fit Type 200 or Type 400 mechanics enclosures, as listed in

Table 3. This table also provides reference information on the ADTRAN enclosures.

Table 3. H2TU-R Enclosure Compatibility

Part Number Description1Document Number

1242007Lx HR12 Metal Enclosure Remote Shelf 61242007LX-5x

1242008L1 HR4 Remote Housing 61242008L1-5

1242034L2 T400 Single Mount (removable RJ-48 jacks) 61242034L2-5

1242034L3 T400 Single-Mount High Voltage Enclosure 61242034L3-5

1245034L12T200 Dual-Mount Installation/Maintenance 61245034L1-5

1. In all applications the H2TU-C must be installed in NEBS compliant and UL listed enclosures to insure full

compliance with this unit.

2 The T200 Dual-Mount housing (P/N 1245034L1) is required when using the T200 H2TU-C for HDSL Loop Support System

(HLSSTM) protection circuits.

T200 H2TU-R,

LOCAL POWERED

P/N 1223024L2

T200 H2TU-R,

SPAN POWERED

P/N 1223026L2

REM

LOC

1223024L2

DSL

LOCAL

DS1

ALM

(GRN)

(YEL)

ESF/

(GRN)

AMI

(YEL)

B8ZS

(GRN)

RLB

(YEL)

LLB

REM

LOC

1223026L2

DSL

DS1

ALM

(GRN)

(YEL)

ESF/

(GRN)

AMI

(YEL)

B8ZS

(GRN)

RLB

(YEL)

LLB

Product Description HDSL2 for General Distribution Installation and Maintenance Practice

461223HDSL2L2-5B

Compliance

ADTRAN HDSL2 modules are NRTL listed to the applicable UL standards. The HDSL2

modules are to be installed in a restricted access location and in a type “B” or “E” enclosure

only.

These devices comply with Part 15 of the FCC rules. Operation is subject to the following two

conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, including interference that may cause

undesired operation.

Changes or modifications not expressly approved by ADTRAN could void the user’s authority

to operate this equipment.

H2TU-C Compliance

Table 4 shows the compliance codes for the H2TU-C modules.

The H2TU-C modules provide span powering voltage (negative only with respect to ground,

–190 VDC nominal, GFI protection <5 mA) and meets requirements of Bellcore

GR-1089-CORE (Class A2) and ANSI T1.418-2002.

H2TU-R Compliance

Table 5 shows the compliance codes for the H2TU-R modules.

The H2TU-R modules must only be installed in shelves or mountings that utilize pin 27 of the

edge connector as a frame ground.

Table 4. Compliance Codes, H2TU-C

Code Input Output

Power Code (PC) F C

Telecommunication Code (TC) – X

Installation Code (IC) A –

Table 5. Compliance Codes, H2TU-R

Code Input Output

Power Code (PC) C C

Telecommunication Code (TC) X X

Installation Code (IC) A –

HDSL2 for General Distribution Installation and Maintenance Practice Installation Guidelines

61223HDSL2L2-5B 5

INSTALLATION GUIDELINES

After unpacking an HDSL2 module, inspect it for damage. If damage has occurred, file a claim

with the carrier, then contact ADTRAN Customer Service. For more information, refer to

“Appendix D, Warranty”.

If possible, keep the original shipping container for returning the module for repair or for

verification of shipping damage.

CAUTION

Electronic modules can be damaged by Electro-Static Discharge

(ESD). When handling modules, wear an antistatic discharge wrist

strap to prevent damage to electronic components. Place modules

in antistatic packing material when transporting or storing. When

working on modules, always place them on an approved antistatic

mat that is electrically grounded.

ADTRAN HDSL2 modules plug directly into the enclosure. Installation wiring is not required.

WARNING

Up to –200 VDC may be present on telecommunications wiring.

The DSX-1 interface is intended for connection to intra-building

wiring only. Ensure chassis ground is properly connected.

NOTE

These products are intended for installation in restricted access

locations only.

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

HANDLING PRECAUTIONS REQUIRED.

Installation Guidelines HDSL2 for General Distribution Installation and Maintenance Practice

661223HDSL2L2-5B

Powering Options

H2TU-C

An H2TU-C module is capable of span powering an H2TU-R module by applying current to the

local loop. Current from 10 to 150 mA is coupled onto an HDSL2 span to power the H2TU-R

module when required. Figure 3 shows the HDSL2 span powering diagram.

Figure 3. HDSL2 Span Powering Diagram

H2TU-R Span Power

The H2TU-R P/N 1223026L2 receives span power from the H2TU-C.

H2TU-R Local Power

In some circumstances a locally powered remote unit is required. The H2TU-R

P/N 1223024L2 can meet those needs.

Module Installation

Follow the step-by-step procedures below to put the HDSL2 modules in service.

Total Access 3000 and 220/E220 H2TU-C Installation

To install the Total Access 3000 H2TU-C (P/N 1181113L2) or 220 H2TU-C module (P/N

1223001L2), perform the following steps:

1. Pull the ejector latch, located on the bottom of the module front panel, out from the closed

position.

2. Hold the unit by the front panel while supporting the bottom edge of the module with the

ejector latch opened to engage the enclosure edge.

3. Align the unit edges to fit in the lower and upper guide grooves for the module slot.

HDSL2

TIP (+)

RING (-)

SPAN POWER 190 V

SPAN CURRENT

HDSL2 for General Distribution Installation and Maintenance Practice Installation Guidelines

61223HDSL2L2-5B 7

4. Slide the unit into the module slot. Simultaneous thumb pressure at the top and bottom

of the unit will ensure that the module is firmly seated against the backplane of the

chassis.

5. Secure the module in place by pushing in on the ejector latch.

All Other Modules

To install any of the HDSL2 modules, with the exception of those explained above, perform the

following steps:

1. Hold the unit by the front panel while supporting the bottom edge of the module and

engage the enclosure edge.

2. Align the unit edges to fit in the lower and upper guide grooves for the enclosure slot.

3. Slide the unit into the access module slot. Simultaneous thumb pressure at the top and at

the bottom of the unit will ensure that the module is firmly seated against the backplane

of the enclosure.

NOTE

For the locally powered H2TU-R (P/N 1223024L2), a local power

supply (P/N 1353.DSK48V04) is available from ADTRAN.

Initialization

When a module is first installed, it performs a series of self-tests. Once the power up self-test

is complete, the status LEDs will reflect the true state of the hardware. For more information,

refer to “H2TU-C Front Panel Operation” on page 16 for LED indications.

Connections HDSL2 for General Distribution Installation and Maintenance Practice

861223HDSL2L2-5B

CONNECTIONS

An H2TU-C module occupies one card slot in the respective Office Repeater Bay for which it is

named. Power and alarm signals are provided to the module through the backplane of the

shelf. DSX-1 and HDSL2 loop signals are connected to the wire-wrap pins or mass termi-

nation (amphenol) shelf connectors corresponding to the slot the module occupies.

Figure 4, Figure 5, and Figure 6 specify the edge connection wiring required for proper

operation.

Figure 4. HDSL2 Edge Connector Wiring

-48 VDC RET

HDSL2 Tip (Wire-Wrap)

HDSL2 Ring (Wire-Wrap)

-48 VDC (1)

DSX-1 Rx In Tip (Wire-Wrap) Input to H2TU-C

DSX-1 Rx In Ring (Wire-Wrap) Input to H2TU-C

-48 VDC RET

DSX-1 Tx Out Tip (Wire-Wrap) Output from H2TU-C

DSX-1 Tx Out Ring (Wire-Wrap) Output from H2TU-C

Fuse Alarm

220 Edge

Connector Wiring

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

HDSL2 Tip

HDSL2 Ring

DSX-1 Rx Tip

DSX-1 Rx Ring

DSX-1 Tx Tip

DSX-1 Tx Ring

Fuse Alarm (to Alarm Module)

-48 VDC Return

Frame Ground

-48 VDC

-48 VDC Return

DDM+ Edge

Connector Wiring

HDSL2 for General Distribution Installation and Maintenance Practice Connections

61223HDSL2L2-5B 9

Figure 5. HDSL2 Edge Connector Wiring, continued

3192 Edge

Connector Wiring

R1 Rx DSX (Out to DSX)

R Tx DSX (In from DSX)

GND

-48 VDC

R HDSL2 Loop

Fuse Alarm (to Alarm Module)

T Tx DSX (In from DSX)

T1 Rx DSX (Out to DSX)

Frame Ground

T HDSL2 Loop

T200 H2TU-R Edge

Connector Wiring

Chassis Ground

DS1 RX Out Tip

HDSL2 Loop Tip

Chassis Ground

DS1 RX Out Ring

-48 VDC Return

VCC (+5 VDC)

Chassis Ground

-48 VDC

PROT-1

DS1 TX In Ring

DS1 TX In Tip

3192M Edge

Connector Wiring

R1 Rx DSX (Out to DSX)

R Tx DSX (In from DSX)

GND

-48 VDC

R HDSL2 Loop

Fuse Alarm (to Alarm Module)

T Tx DSX (In from DSX)

T1 Rx DSX (Out to DSX)

Frame Ground

T HDSL2 Loop

HMU Management Bus

RCV LOS (To Alarm Module)

Provisioning HDSL2 for General Distribution Installation and Maintenance Practice

10 61223HDSL2L2-5B

Total Access 3000 H2TU-C Edge Connector

The Total Access 3000 shelf delivers DSX-1 from the network to the H2TU-C via connectors on

the backplane labeled Pair 7 and Pair 8. The HDSL2 signal is provided toward the customer via

the backplane connector labeled Pair 2. Pins 1 and 33 of the connectors Pair 7 and Pair 8 are

the DSX connections for the H2TU-C in slot 1. Pins 2 and 34 of these connectors are

associated with slot 2. Pins 3 and 35 are associated with slot 3, and so forth, up to pins 28

and 60 for slot 28.

Figure 6. HDSL2 Edge Connector Wiring, continued

PROVISIONING

HDSL2 Configuration is performed via software control. For more information, refer to

“Control Port Operation” on page 17. The provisioning settings can be viewed and manipu-

lated through access to the firmware via the front panel RS-232 port. Table 6 lists the

available provisioning options and their factory default settings.

P2, Row A P2, Row B P2, Row C

- 48 volt return

Interrupt Request

MUX B Receive Data

MUX A Receive Clock

MUX A Receive Data

Chassis ground

SCU Control Lead

Fuse alarm

Interrupt Request Select

MUX B Transmit Clock

MUX A Transmit Clock

Test access bus Loop ring

Test access bus Loop tip

Receive DSX-1 Ring backup connection

Transmit DSX-1 Ring backup connection

Receive DSX-1 Ring normal connection

Transmit DSX-1 Ring normal connection

- 48 volt return

- 48 volt DC A

HDSL2 Loop Ring (facility)

HDSL2 Loop Tip (facility)

SCU Control Lead

SCU Serial Interface

MUX B Transmit Data

MUX B Receive Clock

MUX A Transmit Data

Receive DSX-1 Tip backup connection

Transmit DSX-1 Tip backup connection

Receive DSX-1 Tip normal connection

Transmit DSX-1 Tip normal connection

- 48 volt DC B

Total Access 3000

H2TU-C Edge Connector Wiring

HDSL2 for General Distribution Installation and Maintenance Practice Provisioning

61223HDSL2L2-5B 11

Table 6. Provisioning Options

Provisioning Option Option Settings Default Settings

1. DSX-1 Line Build Out 1 0-133 feet, 133-266 feet,

266-399 feet, 399-533 feet,

533-655 feet, EXTERNAL

0 to 133 feet

2. DSX-1/DS1 Line Code B8ZS, AMI B8ZS

3. DSX-1/DS1 Framing SF, ESF, Unframed, Auto ESF

4. Force Frame Conversion Disabled, Enabled Disabled

5. Smartjack Loopback Disabled, Enabled Enabled

6. Loopback Time Out None, 120 Min 120 Minutes

7. Latching Loopback Mode2T1 (Disabled), FT1 (Enabled) T1 (Disabled)

8. DS1 Tx Level 0 dB, –7.5 dB, –15 dB 0 dB

9. Span Power Enabled, Disabled Enabled

10. Customer Loss Indicator3AIS, Loopback, AIS/CI AIS/CI

11. Performance Reporting Messages None, SPRM, NPRM, AUTO (both) AUTO

12. Loop Attenuation Alarm Threshold 0 (Disabled), 1-99 dB 30 dB

13. SNR Margin Alarm Threshold 0 (Disabled), 1-15 dB 04 dB

14. Remote Provisioning Disabled, Enabled Enabled

15. Shelf Alarm 4Disabled, Enabled Enabled

2. External is used only for Kentrox shelves. Unit transmits 12-volt p-p to DSX panel.

3. Latching Loopback Mode

• T1 - When optioned for T1 mode, the unit does not respond to DDS Latching Loopback codes.

• FT1 (Fractional T1) - DDS Latching Loopback operation is supported. The H2TU-C units which are in the

HDSL circuit are treated as Identical Tandem Data ports and the HTU-R is treated as a different Tandem

Data port.

Note: When operating in FT1 mode and during periods of T1 loss of signal, LOS, or T1 AIS from the customer

CI, the HDSL system will send in the network direction from the HTU-C a Fractional DS1 idle signal

consisting of a repeating 7E (HEX) byte payload within a framed/unframed T1 signal. In addition,

when optioned for FT1 mode, the setting for Customer Loss Response is ignored.

4. Customer Loss Indicator

• AIS - Send AIS to network upon T1 loss of signal or T1 AIS from customer.

• LPBK - HTU-R initiates a network loopback upon T1 loss of signal or T1 AIS from customer.

• AIS/CI - HTU-R sends customer disconnect indication upon loss of signal, loss of synchronization, or receipt

of T1 AIS from customer.

Note: The CI is generated by transmitting the framing received from the network while overwriting the

payload with a repeating pattern. For applications where the DS1 is Extended Superframe, the data

link is overwritten with a Yellow Alarm that is interrupted once every second by a 100 milli-second

code burst of 7E (HEX).

5. Shelf Alarm is on the DDM+, 3192M, and 3192 Units only.

HDSL2 System Testing HDSL2 for General Distribution Installation and Maintenance Practice

12 61223HDSL2L2-5B

Provisioning Options, Total Access 3000 H2TU-C

The Total Access 3000 H2TU-C is provisioned through the SCU on the Total Access 3000

chassis. In addition to the options shown in Table 6 on page 11, the options shown in Table 7

apply.

HDSL2 SYSTEM TESTING

The ADTRAN HDSL2 system provides the ability to monitor the status and performance of the

DSX-1 signals, DS1 signals, and HDSL2 loop signals. Detailed performance monitoring is

provided by the front panel-mounted RS-232 control port (or via the SCU RS-232 port for the

Total Access 3000). These features are valuable in troubleshooting and isolating any system

level problems that may occur at installation or during operation of the HDSL2 system.

Additional testing features are described below.

Table 7. Total Access 3000 Additional Provisioning Options

Provisioning Option Option Settings Default Settings

15. Service State1In Service;

Out-of-Service Unassigned;

Out-of-Service Maintenance

Out-of-Service

Maintenance

16. Network Source2DSX, MUX A, MUX B, Auto MUX DSX

17. External Alarms Enabled, Disabled Disabled

18. Auto In Service Disabled, Enabled Enabled

19. Auto IS Startup Period 1 hour, 4 hours, 8 hours,

24 hours

4 hours

20. Auto IS Off Period 1 hour, 4 hours, 8 hours,

24 hours

8 hours

1. The Service State defaults to Out-of-Service Maintenance. This setting allows active connections to the DSX or

MUX interface; however, no alarms will be generated. Out-of-Service Unassigned allows the loops to train up

but will not connect to the DSX or MUX interface. The In Service setting allows full functioning connections to

DSX or MUX interfaces.

2. For Network Source settings, the following options apply:

• DSX-1: The module will utilize the DSX-1 interface. The Muxes will not be used, even if present.

• Mux A: The module will use Mux A as its data source. The module will not switch to Mux B in the case of a

Mux A failure. The EQ jacks can be used as a temporary test point in conjunction with the EQ jack setting

on the loopback/test screen.

• Mux B: The module will use Mux B as its data source. The module will not switch to Mux A in the case of a

Mux B failure. The EQ jacks can be used as a temporary test point in conjunction with the EQ jack setting

on the loopback/test screen.

• Auto Mux: The module will default to Mux A as its data source. In the event of a Mux A failure, the module

will perform a protection switch to Mux B if it is present and in service. The EQ jacks can be used as a

temporary test point in conjunction with the EQ jack setting on the loopback/test screen.

HDSL2 for General Distribution Installation and Maintenance Practice HDSL2 System Testing

61223HDSL2L2-5B 13

H2TU-C Bantam Jacks

The front panel of an H2TU-C module contains both metallic splitting (EQ) and monitor (MON)

bantam jacks.

The EQ jacks provide an intrusive access point, interrupting signal access to the local loop.

This will enable the user to transmit a test signal toward an H2TU-R module and to receive a

test signal from an H2TU-R module.

The MON jacks, when connected to a bit-error rate test set that is configured for monitor

(bridging) mode, provide a nonintrusive test access point for observing the transmit or receive

signal. In this configuration, synchronization, test patterns, and other functions can be

observed.

Alternatively, the MON jacks can also be used for intrusive testing toward the network. To

utilize this configuration, perform the following steps:

1. Disconnect the H2TU-C DSX-1 interface by opening both the metallic splitting TX and RX

EQ jacks with either a bantam open plug or a bantam test cord that is not terminated.

2. Configure a test set for Terminate mode.

3. Connect the test set to the MON jacks. (Test access toward the network equipment is

achieved).

4. Connect the output (TRANS) of the test set to the MON RX jack, and the input (REC) of the

test set to the MON TX jack.

NOTE

For additional Bantam Jack testing from the Total Access 3000

H2TU-C (P/N 1181113L2), refer to “Appendix C, Front Panel DSX

and MUX Mode Test Access”.

H2TU-R Bantam Jacks

The DS1 monitoring from the H2TU-R is accomplished using the MON bantam jacks.

The jacks labeled MON provide a test access point for monitoring the transmit and receive

signals at the DS1 interface point. The bridging jacks can be used in two different ways:

1. The bridging jack of an H2TU-R module provides a nonintrusive tap onto a signal line and

permits the connection of test equipment to monitor the characteristics of the signal with

the DS1 test set optioned for Bridging mode.

2. If the DS1 test set is optioned for Terminate mode and the customer DS1 is disconnected,

then the bridging jack of an H2TU-R module provides an intrusive tap and could be used

to transmit and receive signals between an H2TU-R module and the network.

Figure 7 illustrates the complete bantam jack arrangement and details for specific jacks.

HDSL2 System Testing HDSL2 for General Distribution Installation and Maintenance Practice

14 61223HDSL2L2-5B

Figure 7. Bantam Jack Arrangements

Loopbacks

The ADTRAN HDSL2 modules respond to three different loopback activation processes. These

processes may be utilized to provide a loopback that affects either an H2TU-C or an H2TU-R

module (locally or remotely).

1. Loopbacks may be activated using the craft interface. The Loopback Options screen that

provides for the H2TU-C and H2TU-R loopbacks is described in “Control Port Operation”

on page 17.

2. The modules respond to the industry standard for HDSL loopbacks. A detailed description

of these loopback sequences is given in “Appendix A, HDSL2 Loopbacks”.

3. HDSL2 modules respond to loopbacks depending on the module type as follows:

• H2TU-C modules respond to loopbacks initiated using the software functions described

in 1 and 2 above.

• H2TU-R modules respond to loopbacks initiated using front panel pushbuttons. See

Table 8.

ADTRAN HDSL2 modules contain smartloop technology which constantly monitors the DSX-1

for a framing pattern. ADTRAN HDSL2 modules will initiate the proper loopback regardless of

how the loopback control sequence is sent (framed or unframed).

The loopback condition imposed in both cases is a logic level loopback at the point within an

H2TU-C module where the DSX-1 signal passes into the HDSL2 modulators. Figure 8 depicts

all of the loopback locations possible with ADTRAN HDSL2 equipment.

DSX-1

BRG

H2TU-C

DATA

PUMP

DSX-1

HDSL2

DSX-1

BRG

POWER

DS1

MON

CPE

DS1

INTERFACE

H2TUR

H2TU-C Bantam Jack Arrangement

(except DDM+ H2TU-C)

H2TU-R Bantam Jack Arrangement

HDSL2 for General Distribution Installation and Maintenance Practice HDSL2 System Testing

61223HDSL2L2-5B 15

In addition to network-side loopbacks, an H2TU-C module provides customer-side loopbacks

initiated by using either the terminal control port or in-band loop codes. For more infor-

mation, refer to “Appendix A, HDSL2 Loopbacks”. In this mode, an AIS signal (all ones) is

supplied to the network.

Figure 8. HDSL2 Loopbacks

H2TU-R Front Panel Pushbuttons

Two loopback (LBK) pushbuttons are accessible from the front panel of the H2TU-R. The REM

loopback button controls a customer loopback at the H2TU-C. The LOC loopback button

controls a bidirectional loopback at the H2TU-R. Table 8 details the loopback pushbutton

operation.

Table 8. Front Panel Loopback Pushbuttons

Switch Label Function

REM Pressing this button changes the H2TU-C loopback state as follows:

• If the H2TU-C is not in loopback, pressing this button will activate a bilateral

loopback.

• If the H2TU-C is in loopback, pressing this button will deactivate the bilateral

loopback.

LOC Pressing this button changes the H2TU-R loopback state as follows:

• If the H2TU-R is not in loopback, pressing this button will activate a bilateral

loopback.

• If the H2TU-R is in loopback, pressing this button will deactivate the bilateral

loopback.

DSX-1

H2TU-C

LOCAL

LOOP

H2TU-C Network-Side Loopback

H2TU-R

H2TU-C

LOCAL

LOOP

H2TU-R Customer-Side Loopback

H2TU-R

H2TU-C

LOCAL

LOOP

H2TU-C Customer-Side Loopback

H2TU-R

DS1

DSX-1

LOCAL

LOOP

H2TU-R Network-Side Loopback or

H2TU-R NIU Loopback

DS1

AIS

X = Signal Inactive

H2TU-C

LOCAL

LOOP

H2TU-R Bilateral Loopback

DS1DSX-1

H2TU-R

H2TU-C H2TU-R

H2TU-C Front Panel Operation HDSL2 for General Distribution Installation and Maintenance Practice

16 61223HDSL2L2-5B

H2TU-C FRONT PANEL OPERATION

LED indicators mounted on the front panel of the unit provide status of the HDSL2 circuit.

Each indicator is described in Table 9 for the H2TU-C and Table 10 for the H2TU-R.

Table 9. H2TU-C Front Panel LED Indications

Front

Panel Label Status Description

DSL  Green

 Red

DSL sync, no errors currently detected, and signal margin ≥ 2 dB

No DSL sync, errors being detected, or signal quality < 2 dB

DSX/DS1  Green

 Red

DSX-1 signal is present and synchronized and no errors are

detected

No DSX-1 signal, or signal is present with errors

ALM  Off

 Red

 Yellow

No alarm condition detected

Loss of DSX-1 signal to the unit

Loss of DS1 signal to the remote

ESF/SF  Off

 Green

 Yellow

Unit is provisioned for unframed data

Unit is provisioned for SF data

Unit is provisioned for ESF data

B8ZS/AMI  Green

 Yellow

Unit is provisioned for AMI line code

Unit is provisioned for B8ZS line code

LBK  Off

 Yellow

Unit is not in loopback

Unit loopback is active toward network or customer

Table 10. H2TU-R Front Panel LED Indications

Front

Panel Label Status Description

DSL  Green

 Red

DSL sync, no errors currently detected, and signal margin > 2 dB

No DSL sync, errors being detected, or signal margin ≤ 2 dB

DS1  Green

 Red

DS1 signal is present and no errors currently being detected

No DS1 signal or framing mismatch

ALM  Off

 Red

 Yellow

No active alarm present

Loss of DS1 signal to the unit

Loss of DSX signal to the H2TU-C

ESF/SF  Off

 Green

 Yellow

Unit is provisioned for UNFRAMED data

Unit is provisioned for SF data

Unit is provisioned for ESF data

B8ZS/AMI  Green

 Yellow

Unit is provisioned for AMI line code

Unit is provisioned for B8ZS line code

LLB/RLB  Off

 Green

 Yellow

Unit is NOT in loopback

Active remote loopback from the H2TU-C toward the customer

This unit is in loopback (network and/or customer)

1181113L2

DSL

DSX/DS1

ALM

B8ZS/AMI

(YEL) (GRN)

ESF/ SF

(YEL) (GRN)

LBK

LOC

1223024L2

DSL

LOCAL

DS1

ALM

(GRN)

(YEL)

ESF/

(GRN)

AMI

(YEL)

B8ZS

(GRN)

RLB

(YEL)

LLB

URH T

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 17

CONTROL PORT OPERATION

The H2TU-C modules provide a DB-9 connector on the front panel that supplies an RS-232

interface for connection to a controlling terminal. The pinout of the DB-9 is illustrated in

Figure 9.

Figure 9. RS-232 (DB-9) Pin Assignments

The Total Access 3000 H2TU-C Control Port access is provided via the DB-9 connector on the

Total Access System Controller Unit (SCU), P/N 1181018L1. This section will include Total

Access H2TU-C screens separately where they differ from other HDSL2 screens.

The terminal interface operates at data rates from 1.2 kbps to 19.2 kbps. (Total Access 3000

SCU default rate is 9.6 kbps.)

The asynchronous data format is fixed at the following parameters:

8 data bits; no parity; 1 stop bit

Disable the line wrap feature of the emulation program if necessary.

NOTE

If using a personal computer (PC) with terminal emulation capabil-

ity, be sure to disable any power saving programs. Otherwise, com-

munication between the PC and the HDSL2 unit may be disrupted,

resulting in misplaced characters or screen time outs.

Terminal Emulation Modes

An H2TU-C module supports two types of terminal emulation modes:

• Manual Update Mode - This mode is a dumb terminal mode, enabling easy access to print

screen and log files commands. This mode also includes a “3 SPACES TO UPDATE”

message on the top of the terminal screen (press the spacebar three times to update the

screen).

• Real Time Update Mode (default) - This mode is a VT100 terminal mode. This mode enables

all screen highlighting and cursor placement. Print screen and log file commands are not

available in this mode.

NOTE

The Manual Update Mode is not available on the Total Access 3000

H2TU-C.

TXD (Transmit Data)

RXD (Receive Data)

SGN (Signal Ground)

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

18 61223HDSL2L2-5B

Screens

The screens illustrated in Figure 10 through Figure 47 are for an HDSL2 circuit deployed with

the ADTRAN HDSL2 technology. The circuit includes an H2TU-C module and an H2TU-R

module.

Logon to Main Menu

A terminal session is initiated by entering multiple spacebar characters, which are used by an

H2TU-C module to determine the speed of the terminal. Once the speed has been determined,

the ADTRAN HDSL2 Main Menu is displayed from which the various Operation, Adminis-

trative, Maintenance, and Provisioning (OAM&P) screens may be accessed (Figure 10). To

display a particular screen from the menu, press the number key associated with the screen

title, and press the ENTER key.

NOTE

When the ADC HiGain® Management Unit (HMU) is installed, the

3192M DB-9 is disabled. Terminal screens must be accessed from

any one of these HMUs:

HMU-319-L7A

HMU-319-L7AV307

HMU-319-L7A32.

Figure 10. ADTRAN HDSL2 Main Menu

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Adtran HDSL2 Main Menu

1. HDSL2 Unit Information

2. Provisioning

3. Span Status

4. Loopbacks and Test

5. Performance History

6. Scratch Pad, Ckt ID, Time/Date

7. Terminal Modes

8. Alarm History

9. Event History

10. System PM/Screen Report

11. Clear PM and Alarm Histories

12. Troubleshooting

13. Virtual Terminal Control

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 19

Descriptions for the menu items on the HDSL2 Main Menu include the following:

•“HDSL2 Unit Information” on page 21

•“Provisioning” on page 22

•“Span Status” on page 24

•“Loopbacks and Test” on page 27

•“Performance History” on page 31

•“Scratch Pad, Circuit ID, Time/Date Screen” on page 33

•“Terminal Modes” on page 34

•“Alarm History” on page 35

•“Event History” on page 38

•“System PM/Screen Report” on page 39

•“Clear PM and Alarm Histories” on page 39

•“Troubleshooting” on page 40

•“Virtual Terminal Control” on page 46

Logon to Main Menu, Total Access 3000 H2TU-C

Accessing the HDSL2 circuit information via the Total Access 3000 SCU control port requires

the user to logon by entering a user name and password (Figure 11). The default account

name is ADMIN. The default password is PASSWORD.

After successful logon, the Total Access Main Menu (Figure 12) will appear. Select Access

Modules (option 4) from this menu.

Figure 11. Logon Screen

TID: Total Access System 03/01/05 09:29

Unit Number: 1

Total Access System

Account Name :

'?' - System Help Screen

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

20 61223HDSL2L2-5B

Figure 12. Total Access Main Menu

The Access Module Menus screen (Figure 13) will display the access modules occupying the

Total Access 3000 shelf. Select the corresponding channel slot number for the desired

H2TU-C. To the right of each access module listed, the current alarm state is indicated.

When the module is selected, the ADTRAN HDSL2 Main Menu is displayed, from which the

various Operation, Administrative, Maintenance, and Provisioning (OAM&P) screens are

accessed (Figure 14). To display a particular screen from the menu, press the number key

associated with the screen title, and then press the ENTER key.

Figure 13. Access Module Menus Screen

Shelf: 1 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Total Access

1. System Controller

2. Common A - [.....]

3. Common B - [.....]

4. Access Modules

5. System Alarms

6. Network Management

7. Logoff

Selection:

'?' - System Help Screen

Shelf: 1 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Access Module Menus

1 - H2TU-C L2... [None] 15 - ............ [None]

2 - ............ [None] 16 - ............ [None]

3 - ............ [None] 17 - ............ [None]

4 - ............ [None] 18 - ............ [None]

5 - ............ [None] 19 - ............ [None]

6 - ............ [None] 20 - ............ [None]

7 - ............ [None] 21 - ............ [None]

8 - ............ [None] 22 - ............ [None]

9 - ............ [None] 23 - ............ [None]

10 - ............ [None] 24 - ............ [None]

11 - ............ [None] 25 - ............ [None]

12 - ............ [None] 26 - ............ [None]

13 - ............ [None] 27 - ............ [None]

14 - ............ [None] 28 - ............ [None]

Enter Channel Slot Number :

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 21

Figure 14. Total Access 3000 H2TU-C Main Menu Screen

HDSL2 Unit Information

The Unit Information screen (Figure 15) provides detailed product information on each

component in the HDSL2 circuit. ADTRAN Technical Support contact numbers are also

available from the Unit Information screen. This screen is shown as an example of an actual

HDSL2 screen.

Figure 15. ADTRAN Information Screen

Shelf: 1 Slot: 15 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

HDSL2 Main Menu

1. HDSL2 Unit Information

2. Provisioning

3. Status

4. Loopbacks and Test

5. Performance Monitoring

6. Scratch Pad, Ckt ID

7. Alarm History

8. Event History

9. System Status/PM Report

10. Clear PM and Alarm Histories

11. Troubleshooting

12. Flash Upgrade

Selection:

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

ADTRAN

901 Explorer Boulevard

Huntsville, Alabama 35806-2807

--------------------- For Information or Technical Support --------------------

Support Hours ( Normal 7am - 7pm CST, Emergency 7 days x 24 hours )

Phone: 800.726.8663 / 888.873.HDSL Fax: 256.963.6217 Internet: www.adtran.com

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

ADTN H2TU-C ADTN H2TU-R

P/N: 1223001L2 P/N: 1223026L2

S/N: FD14E3648 S/N: 123456789

CLEI: T1L7J2MAAA CLEI: T1L8MOKCAA

Manf: 08/08/2004 Manf: 08/01/2004

Ver: A07 Ver: A09

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

22 61223HDSL2L2-5B

Provisioning

The Provisioning menu (Figure 16) displays current settings. To change a particular option

setting (for example, “1” for DSX-1 Line Build Out) select the appropriate number, press ENTER,

and the new menu will appear with a list of the available settings. To return to this screen

and/or the Main Menu, press ESC. To re-deploy this unit, press D which will restore the factory

default settings to those shown in Table 6 on page 11.

Figure 16. Provisioning Screen

NOTE

DSX-1 Line Build Out is set to 0-133 feet. This option is set to

EXTERNAL if using a Kentrox shelf. Otherwise, the LBO option

should be set to zero (0).

NOTE

Shelf Alarm option is on the DDM+ and 3192 modules only.

Total Access 3000 H2TU-C Provisioning Menu

Two screens comprise the provisioning menu for the Total Access 3000 H2TU-C. Figure 17

illustrates the first page of the menu.

Press the N (and ENTER) to move forward to the next screen. Figure 18 shows the remainder of

the Provisioning menu.

To return to the previous screen, press P.

To return to the Main Menu, press ESC.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Provisioning

1. DSX-1 Line Buildout = 0-133 feet

2. DSX-1/DS1 Line Code = B8ZS

3. DSX-1/DS1 Framing = ESF

4. Forced Frame Conversion = Disabled

5. Smartjack Loopback = Enabled

6. Loopback Timeout = 120 Minutes

7. Latching Loopback Mode = T1 (Disabled)

8. DS1 TX Level = 0 dB

9. Span Power = Enabled

10. Customer Loss Indicator = AIS / CI

11. PRM Setting = AUTO

12. Loop Atten Alarm Thres = 30 dB

13. SNR Margin Alarm Thres = 04 dB

14. Remote Provisioning = Enabled

15. Shelf Alarm = Enabled

D. Restore Factory Defaults

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 23

To re-deploy this unit, press D which restores the factory default settings to those shown in

Table 6 and Table 7. The options shown in these tables are available with the H2TU-R (P/N

1223026L2). Some settings may differ when using different H2TU-Rs.

Figure 17. Provisioning Menu, Page 1

Figure 18. Provisioning Menu, Page 2

Shelf: 1 Slot: 14 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

Provisioning

1. DSX-1 Line Buildout = 0-133 Feet

2. DSX-1/DS1 Line Code = B8ZS

3. DSX-1/DS1 Framing = ESF

4. Forced Frame Conversion = Disabled

5. Smartjack Loopback = Enabled

6. Loopback Timeout = 120 Min

7. Latching Loopback Mode = T1 (Disabled)

8. DS1 TX Level = 0 dB

9. Span Power = Enabled

10. Customer Loss Indicator = AIS / CI

11. PRM Setting = AUTO

12. Loop Atten Alarm Thres = 30dB

13. SNR Margin Alarm Thres = 04dB

14. Remote Provisioning = Enabled

15. Service State = OOS Maintenance

16. Network Source = DSX

N. Next Page

Selection:

Shelf: 1 Slot: 14 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:HntsvlALMn0103

Provisioning

17. External Alarms = Disabled

18. Auto In Service = Enabled

19. Auto IS Startup Period = 4 hours

20. Auto IS Off Period = 8 hours

D. Restore Factory Defaults

P. Previous Page

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

24 61223HDSL2L2-5B

Span Status

The Span Status Screen (Figure 19) provides quick access to status information for each

HDSL2 receiver in the circuit.

Figure 19. Span Status Screen

The Total Access 3000 Span Status Screen (Figure 20) includes an option to access the Auto

In Service feature of Total Access 3000.

Figure 20. Span Status Screen, Total Access 3000

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Span Status Screen

ATTEN

______ <-00dB-> ______

|H2TUC | |H2TUR |

--LOS->| | | |------>

| | | |

NET | |<--------->| | CUST

| |17dB 17dB| |

<------| | MARGIN | |<-LOS--

DSX-1 |______| |______| DS1

1. Legend

2. Detailed Status

Selection:

Shelf: 5 Slot: 22 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

Span Status Screen

ATTEN

______ <-02dB-> ______

|H2TU-C | |H2TU-R |

------>| | | |------>

| | | |

NET | |<--------->| | CUST

| |17dB 17dB| |

<------| | MARGIN | |<------

DSX-1 |______| |______| DS1

1. Legend

2. Detailed Status

3. View Auto In Service Status

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 25

Status Screen Legend Screen

The Status Screen Legend (Figure 21) provides a description of messages used on the Status

screens.

Figure 21. Status Screen Legend

Detailed Status Screen

The Detailed Status selection from the Span Status Screen menu (Figure 22) displays the T1

and HDSL2 status for each receiver point.

Figure 22. Detailed Status Screen

Press ESC to return to previous menu

STATUS SCREEN LEGEND

Loop Attenuation

______ <---------- 25dB ------------> ______

|H2TUC | |H2TUR |

<------| | | |------>

| | | |

| |<---------------------------------->| |

| |9dB 8dB| |

| | | | | |

------>| | Signal Margin | | |<------

|______| above 10e-7 BER | |______|

for H2TUC Receiver |

Signal Margin

above 10e-7 BER

Alarm Indicators: Error Indicators: for H2TUR Receiver

LOS = Loss of Signal ES = Errored Second

LOF = Loss of Frame Sync SES = Severely Errored Second

RAI = Yellow Alarm UAS = Unavailable Second

AIS = Blue Alarm

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Detailed HDSL2 and T1 Status

HDSL2 RECEIVER DATA

H2TU-C H2TU-R

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

MARGIN(CUR/MIN/MAX): 17/17/17 17/17/17

ATTEN(CUR/MAX): 00/00 00/00

ES 15MIN: 000 000

SES 15MIN: 000 000

UAS 15MIN: 000 000

T1 RECEIVER DATA

DSX-1 DS1

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

FRAMING: UNFR UNFR

LINE CODE: B8ZS B8ZS

ES-P/ES-L: 000/000 000/000 1. Zero Registers

SES-P/SES-L: 000/000 000/000 2. Restart Min/Max

UAS-P/UAS-L: 000/000 000/000

ALARMS: None None Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

26 61223HDSL2L2-5B

Total Access 3000 H2TU-C Auto In Service Status Screen

The Auto In Service Status Screen (Figure 23) provides the status of the Auto In Service

feature.

The T1 alarm indications will display if the External Alarms option is enabled on the Provi-

sioning menu (Figure 17).

The Auto In Service Status screen also indicates the startup or exit period remaining as either

1, 4, 8, or 24 hours. This is the time during which the unit monitors both loop synchroni-

zation (Loop Sync) and T1 alarms (if enabled) and will only go into (or out of) service if the

circuit remains synchronized and without T1 alarms during the entire measured period.

These times are also set from the Provisioning menu. System responses displayed in the

status fields on this screen are shown in Table 11 below.

A single menu option is provided to view the Alarm History Screen. This screen is also

available by selecting the HDSL2 Main Menu option.

Figure 23. Auto In Service Screen

Table 11. Auto In Service Status Indications

Status Field Name System Indications

Current Auto In Service State (line 1) In-Service

Out-of-Service Maintenance

Auto In Service Status (line 2) Currently in startup period

Currently in exiting period

OK, Startup Period COMPLETED

OK, Startup INCOMPLETE (forced in-service)

Auto In Service Criteria (line 3) DSL Loop Sync (T1 alarms ignored)

DSL Loop Sync and absence of T1 alarms

Criteria (current status) DSL Loop Sync = OK or LOS (LOS shown in Figure 23)

T1 Alarm Status = Alarm or OK

Shelf: 1 Slot: 15 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

Auto In Service Status Screen

Current Auto In Service State = Out-of-Service Maintenance

Auto In Service Status = Currently in Startup Period

Auto In Service Criteria = DSL Loop Sync (T1 alarms ignored)

NOTE: The external alarms provisioning option determines

whether T1 alarms are an auto in service criterion.

Enabling external alarms sets T1 alarms as a criterion.

Criteria Status

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

DSL Loop Sync LOS

---Startup Period Timer---

4 hrs 0 mins

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

1. View Alarm History

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 27

Loopbacks and Test

The Loopback and Test Commands screen (Figure 24) provides the user with the ability to

initiate or terminate all available HDSL2 loopbacks. Each HDSL2 circuit component can be

looped toward the network or customer from this screen. Unit self tests can also be initiated

from this screen. A “Loop Down ALL Units” command will be available in lieu of the “Run Self

Tests” option when any loopback is active.

Figure 24. Loopback and Test Commands Screen

Total Access 3000 H2TU-C Loopback and Test Screen

The Total Access 3000 H2TU-C (Figure 25) has the following additional features:

• Equipment Jack - Select Network or Customer for testing purposes. Refer to “Appendix C,

Front Panel DSX and MUX Mode Test Access” for details.

• BERT Test Functions

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Loopback and Test Commands

______ ______

|H2TUC | |H2TUR |

------>| | | |------>

| | | |

NET | |<--------->| | CUST

| | | |

<------| | | |<------

DSX-1 |______| |______| DS1

1. Run Self Tests

2. H2TU-C Loopup Network

3. H2TU-C Loopup Customer

4. H2TU-R Loopup Network

5. H2TU-R Loopup Customer

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

28 61223HDSL2L2-5B

Figure 25. Total Access 3000 H2TU-C Loopback and Test Commands Screen

BERT Test Functions

The Bit Error Rate Testing (BERT) Test Screen (Figure 26) is accessed by selecting the

associated number on the Loopback and Test menu. A five-selection menu is at the bottom of the

screen. Option 1, (Re)start Pattern is used to start (or restart) a test, and option 2, Stop Test is

used to manually stop the test.

NOTE

The BERT only runs unframed patterns. When the BERT is

running, option 5 changes to Inject Bit Errors.

Shelf: 5 Slot: 22 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

Loopback and Test Commands

______ ______

|H2TU-C | |H2TU-R |

------>| | | |------>

| | | |

NET | |<--------->| | CUST

| | | |

<------| | | |<------

DSX-1 |______| |______| DS1

1. Run Self Tests

2. H2TU-C Loopup Network

3. H2TU-C Loopup Customer

4. H2TU-R Loopup Network

5. H2TU-R Loopup Customer

6. Equipment Jack = Unavailable

7. BERT Test Functions

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 29

Figure 26. BERT Test Screen

NOTE

When the BERT is started, the H2TU-R will automatically be put in

loopback and the default test length of 2 hours will be initiated.

Selecting option 3, Select Data Pattern from the BERT Test Screen allows the appropriate data

test pattern for the desired results to be selected. Figure 27 shows this screen with the menu

of test patterns.

Figure 27. Select Data Pattern

Shelf: 1 Slot: 18 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

BERT Test Screen

Test Results

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

Test Direction: Customer

Unframed Pattern Generation: OFF

Pattern: QRSS Pattern

Line Coding: B8ZS

Bit Errors: 0000000

Bit Error Rate: 0.0E-08

Pattern Sync: N/A

Pattern Sync Losses: 000

Test Length (HH:MM:SS): 02:00:00

Time Elapsed (HH:MM:SS): 00:55:12

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

1. (Re)start Pattern

2. Stop Test

3. Select Data Pattern

4. Enter Test Timeout

5. Toggle Test Direction

Selection:

Shelf: 1 Slot: 18 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

CUSTOMER Pattern Screen

Current Pattern = QRSS Pattern

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

1. 63 Pattern

2. 511 Pattern

3. 2047 Pattern

4. REV. 2047 Pattern

5. 2^15 Pattern

6. 2^20 Pattern

7. QRSS Pattern

8. 2^23 Pattern

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

30 61223HDSL2L2-5B

Option 4, Enter Test Timeout from the BERT Test Screen displays the Timeout Screen (Figure

28). The time out can run for a specific duration by entering the hours and/or minutes, or can

run indefinitely by entering 00:00, as indicated by the note on the screen. With no test

running the Toggle Test Direction option from the BERT Test Screen allows the toggling of the

test signal in the opposite direction (from customer to network and vice versa).

Figure 28. BERT Test Functions - Enter Test Timeout Option

When option 1, (Re)start Pattern is selected to start the test, option 5 changes to Inject Bit

Errors. This option is used to display the screen shown in Figure 29. This allows the insertion

of errors from this test origination point to validate the test results.

Figure 29. BERT Inject Errors Screen

Shelf: 1 Slot: 18 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

CUSTOMER Timeout Screen

Test Timeout(Hr:Min) = 02:00

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

1. Change Timeout

*NOTE: When timeout is set to 00:00, the

test will run indefinitely.

Selection:

Shelf: 1 Slot: 14 Total Access System 03/01/05 09:29

Unacknowledged Alarms: None

Circuit ID:

BERT Test Screen

Test Results

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

Test Direction: Customer

Unframed Pattern Generation: ON

Pattern: 2^23 Pattern

Line Coding: B8ZS

Bit Errors: 0000000

Bit Error Rate: 0.0E-05

Pattern Sync: ACQUIRED

Pattern Sync Losses: 000

Test Length (HH:MM:SS): 02:00:00

Time Elapsed (HH:MM:SS): 00:02:32

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

1. Number of Errors to Inject = 001 (Maximum=255)

2. Inject Bit Error

3. (Re)start

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 31

Performance History

The Performance History screens (Figure 30) display the historical HDSL2 and T1 perfor-

mance data in several different registers. At each 15-minute interval, the performance infor-

mation is transferred to the previous 15-minute performance data register. This unit stores

performance data in 15-minute increments for the last 24-hour period.

Additionally, some modules store up to 48 hours worth of 60-minute interval data. At each

24-hour interval, the performance data is transferred into the previous 24-hour performance

data registers. The module used in this example stores up to 31 days of 24-hour interval data.

Select a module and interface to view the corresponding performance data. Line (L) and Path

(P) can be viewed.

Figure 30. Performance History, 15-Minute Line Data

Abbreviations used in the Performance Data screens are defined in the Data Definitions

screens (Figure 31 and Figure 32).

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Menu 15 Minute H2TUC DSX-1 Performance Data

1. Definitions ES-L SES-L UAS-L PDVS-L B8ZS-L CV-L

2. Reset Data 002 002 002 000 000 00000

3. 15 Min Data 11:45 --- --- --- --- --- -----

4. 60 Min Data 11:30 --- --- --- --- --- -----

5. 24 Hr Data 11:15 --- --- --- --- --- -----

6. Line Data 11:00 --- --- --- --- --- -----

7. Path Data 10:45 --- --- --- --- --- -----

8. H2TUC DSX-1 10:30 --- --- --- --- --- -----

9. H2TUC LOOP 10:15 --- --- --- --- --- -----

10. H2TUR LOOP 10:00 --- --- --- --- --- -----

11. H2TUR DS1 09:45 --- --- --- --- --- -----

09:30 --- --- --- --- --- -----

09:15 --- --- --- --- --- -----

09:00 --- --- --- --- --- -----

___ ___

--8>| C | | R |--->

| |<-9---------------10>| |

<---|___| |___|<-11

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

32 61223HDSL2L2-5B

Figure 31. Performance Data Definitions, Loop

Figure 32. Performance Data Definitions, Path

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Performance Data Definitions

H2TUC, H2TUR, and H2R LOOP Related: HDSL2 Framing

ES-L Errored Seconds CRC>=1 or LOSW>=1

SES-L Severely Errored Seconds CRC>=50 or LOSW>=1

UAS-L Unavailable Seconds >10 cont. SES-Ls

DS1 and DSX-1 Line Related: Superframe and Extended Superframe

ES-L Errored Seconds (BPV+EXZ)>=1 or LOS>= 1

SES-L Severely Errored Seconds (BPV+EXZ)>=1544 or LOS>=1

UAS-L Unavailable Seconds >10 cont. SES-Ls

PDVS-L Pulse Density Violation Secs EXZ>=1; >7 zeros if B8ZS, >15 if AMI

B8ZS-L B8ZS Seconds B8ZS coded signal received

CV-L Code Violation Count (BPV+EXZ) count

NOTE: Reverse video indicates invalid data due to a terminal restart (or power

cycle), a data register reset, or a system date or time change.

N. Next

P. Previous Selection:

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Performance Data Definitions

DS1 and DSX-1 Path Related: Superframe Extended Superframe

ES-P Errored Seconds FE>=1 or CRC>=1 or

SEF>=1 or AIS>=1 SEF>=1 or AIS>=1

SES-P Severely Errored Seconds FE>=8 or CRC>=320 or

SEF>=1 or AIS>=1 SEF>=1 or AIS>=1

UAS-P Unavailable Seconds >10 cont. SES-Ps >10 cont. SES-Ps

SAS-P SEF/AIS Seconds SEF>=1 or AIS>=1 SEF>=1 or AIS>=1

ES-PFE Far End Errored Seconds n/a PRM bits G1-G6,SE,

or SL=1, or RAI

CV-P Code Violation Count FE count CRC error count

NOTE: Under a UAS-P condition, ES-P and SES-P counts are inhibited.

Under a SES-L or SES-P condition, the respective CV-L or CV-P count is

inhibited.

P. Previous Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 33

Scratch Pad, Circuit ID, Time/Date Screen

The Scratch Pad, Circuit ID, Time/Date screen (Figure 33) provides a logging medium for

circuit information. The format for the items on this screen are as follows:

• The scratch pad is for circuit-specific notes and can hold 50 alphanumeric characters in

any combination.

• The circuit ID can be any alphanumeric string up to 25 characters in length.

• The time should be entered using military time format (for example, enter 3:15 p.m. as

“151500”).

• The date should be entered in the MMDDYY format (for example, enter January 02, 2003,

as “010203”).

Figure 33. Scratch Pad, Circuit ID, and Date/Time Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Current Scratch Pad:

New Scratch Pad =

New Circuit ID = HNTSVLALHDSL2

New Date = / / (MM/DD/YY)

New Time = : : (HH:MM:SS)

Press TAB to skip to next entry field.

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

34 61223HDSL2L2-5B

Terminal Modes

The module used in this example includes two terminal emulation modes.

• Manual Update Mode - This mode is used to manually update the screens. This mode

supports efficient print screen and log file utilities for storage of key provisioning

parameters, alarm or performance history and current system status. The message “3

SPACES TO UPDATE” appears at the top of each screen. By pressing the spacebar three

times, the screen will be refreshed and will reflect the most current circuit conditions and

provisioning options.

• Real-Time Update Mode (VT100) - This mode provides real-time updating of HDSL2 circuit

conditions and provisioning options as changes occur. The default mode is Real-Time

Update.

The desired terminal mode can be selected from the Terminal Modes Menu, illustrated in

Figure 34. Additionally, pressing CTRL+T while on any screen can toggle the two terminal

modes.

Figure 34. Terminal Mode Screen

NOTE

The Manual Update Mode is not available on the Total Access 3000

H2TU-C.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

TERMINAL MODES MENU

MANUAL UPDATE MODE:

* You can print or log screens

* No text is highlighted

* "3 SPACES TO UPDATE" appears at the top of each screen,

reminding you to press the spacebar 3 times to update the screen

* There is a delay between screen changes & updates

* After 30 min. of no interaction, a new baud rate search is begun

* Ignores input until screen is finished printing.

REAL-TIME UPDATE MODE:

* Faster of the two modes

* You cannot print screens to a log file

* Highlighting is enabled

* Recommended for daily operation

Press CTRL+T to toggle update modes on any screen.

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 35

Alarm History

The Alarm History screens are divided into three separate screens:

•“T1 Alarm History” on page 35

•“HDSL2 Span History” on page 36

•“HDSL2 Facility Alarm History” on page 37

T1 Alarm History

The T1 Alarm History screen (Figure 35) displays the following information:

• DSX-1/DS1 Red Alarm

• DSX-1/DS1 Yellow Alarm

• DSX-1/DS1 Blue Alarm

Figure 35. T1 Alarm History Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

T1 Alarm History

LOCATION ALARM FIRST LAST CURRENT COUNT

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

H2TU-C RED(LOS/LOF) 01/01/00 00:00:04 01/01/00 00:00:04 Alarm 002

(DSX-1) YELLOW(RAI) OK 000

BLUE(AIS) OK 000

H2TU-R RED(LOS/LOF) 01/01/00 00:14:05 01/01/00 00:14:05 Alarm 001

(DS1) YELLOW(RAI) OK 000

BLUE(AIS) OK 000

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

1. T1 Alarm 2. HDSL2 Span 3. Facility Alarm C. Clear T1 Alarm

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

36 61223HDSL2L2-5B

HDSL2 Span History

The HDSL2 Span History screen (Figure 36) displays the following information:

• Loss of Sync for each HDSL2 receiver

• Margin Threshold Alarm for each HDSL2 receiver

• Attenuation Threshold Alarm for each HDSL2 receiver

Figure 36. HDSL2 Span History Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

HDSL2 Span History

LOCATION ALARM FIRST LAST CURRENT COUNT

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

SPAN 1 LOOP HLOS OK 000

H2TU-C MRGN OK 000

H2TU-R MRGN OK 000

H2TU-C ATTN OK 000

H2TU-R ATTN OK 000

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

1. T1 Alarm 2. HDSL2 Span 3. Facility Alarm C. Clear HDSL2 Span

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 37

HDSL2 Facility Alarm History

The HDSL2 Facility Alarm History screen (Figure 37) displays the following information:

•DC Open

• Over-current (short)

• Ground fault

• Power cycle

Figure 37. HDSL2 Facility Alarm History Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Facility Alarm History

LOCATION ALARM FIRST LAST CURRENT COUNT

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

FACILITY DC OPEN 01/01/00 00:00:03 01/01/00 00:13:06 OK 002

FACILITY SHORT OK 000

FACILITY GROUND FAULT OK 000

H2TU-C POWER CYCLE 01/01/00 00:00:02 01/01/00 00:00:02 OK 002

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

1. T1 Alarm 2. HDSL2 Span 3. Facility Alarm C. Clear Facility Alarm

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

38 61223HDSL2L2-5B

Event History

The Event History screen (Figure 38) provides a log history of HDSL2 circuit events. The

following is a list (but not all-inclusive) of possible events:

Figure 38. Event History Screen

•Circuit ID Change

• DS1 Transmit Level Option Change

• DSX/DS1 Alarm Type Active/Inactive

• DSX-1 Line Build Out Option Change

• Element Network/Customer

Loop up/Loop down

• Event Log Reset

• External Alarm Blocking Change

• Framing Option Change

• H2TU-C/H2TU-R Powered Up

• HDSL/T1 PM Registers Reset

• Line Code Option Change

• Loopback Time Out Option Change

• Network Source Setting Change

•NIU Loopback Option Change

• Span Power Option Change

• Time/Date Changed From/To

• Loop Segment XX In/out of Sync

• Splice Detector Reset

• Bad Splice Detected

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Num Description of Event Date Time Source

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

1. H2TU-C Powered Up 01/01/00 00:00:01 H2TU-C

2. H2TU-R Powered Up 01/01/00 00:03:08 H2TU-R

3. H2TU-C Powered Up 01/01/00 00:00:01 H2TU-C

4. H2TU-R Powered Up 01/01/00 00:14:03 H2TU-R

5. Default Options Restored 01/01/00 00:16:23 H2TU-C

6. Date changed to 06/09/04 02:18:07 H2TU-C

7. Time changed to 06/09/04 11:28:00 H2TU-C

8. T1 PM Registers Reset 06/09/04 11:54:37 H2TU-C

9. T1 PM Registers Reset 06/09/04 11:57:09 H2TU-C

Page Number: 1/ 1 Number of Events: 9

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

'P' - Previous Page 'H' - Home 'R' - Reset Events

'N' - Next Page 'E' - End

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 39

System PM/Screen Report

The System PM/Screen Report option (Figure 39) offers four types of reports on performance

monitoring. Selecting a report type will display all the reports for that category on the screen

at once, which is more efficient than accessing each menu individually.

Figure 39. System PM/Screen Report Option

Clear PM and Alarm Histories

The Clear PM and Alarm Histories option from the HDSL2 Main Menu initializes data from

performance monitoring and alarm histories. Selecting this option from the Main Menu

displays the prompt shown in Figure 40.

Figure 40. Clear PM and Alarm Histories

6. Scratch Pad, Ckt ID, Time/Date

7. Terminal Modes

8. Alarm History

9. Event History

10. System PM/Screen Report

11. Clear PM and Alarm Histories

12. Troubleshooting

13. Virtual Terminal Control

Selection: 10

Enable data logging now.

Select Report Type or Press Escape to cancel:

1) Full System/History Report

2) Current Status Report

3) System Configuration Report

4) Alarm/Event History

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Adtran HDSL2 Main Menu

1. HDSL2 Unit Information

2. Provisioning

3. Span Status

4. Loopbacks and Test

5. Performance History

6. Scratch Pad, Ckt ID, Time/Date

7. Terminal Modes

8. Alarm History

9. Event History

10. System PM/Screen Report

11. Clear PM and Alarm Histories

12. Troubleshooting

13. Virtual Terminal Control

This will clear the PM, Alarm, Span Status, and

Troubleshooting Histories for all circuit elements.

Are you sure (Y/N)?

Selection: 11

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

40 61223HDSL2L2-5B

Troubleshooting

The Troubleshooting screens include the new feature “Splice Detection.” This and other new

features are described in more detail in “Appendix B, HDSL2 Features”.

The Troubleshooting screen (Figure 41) provides troubleshooting menu items at the bottom of

the screen plus ADTRAN contact information. Select from the following menu options:

•“Troubleshooting Guidance” on page 41

•“General Information” on page 42

•“Chronic Circuit Guidance” on page 43

Figure 41. Troubleshooting Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Troubleshooting

For HELP based on detected problems, select Troubleshooting Guidance from the

list below. If further assistance is needed, contact ADTRAN Tech Support.

Hours: Normal 7am - 7pm CST 1. Troubleshooting Guidance

Emergency 7 days x 24 hours 2. General Information

Phone: 800.726.8663 / 888.873.HDSL 3. Chronic Circuit Guidance

Fax: 256.963.6217

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 41

Troubleshooting Guidance

Selecting the option number associated with the Troubleshooting Guidance selection on the

Troubleshooting screen causes an H2TU-C module to read the operational status of the circuit

and return troubleshooting guidance to the probable cause of the trouble, as shown in Figure

42.

Figure 42. Troubleshooting Guidance

NOTE

The display on the Troubleshooting screens represent a single cir-

cuit problem, based upon a hierarchy within the software. Other

problems may exist.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

DSX-1 Loss of Signal(LOS) / Loss of Frame(LOF) (Red Alarm)

- Patch test set REC jack into H2TUC BRG TRANS jack to verify integrity of

signal to the H2TUC from the network (verify test set in Bridge mode).

- If signal to H2TUC is missing, insert test set at DSX panel IN Jack connecting

toward H2TUC (to verify wiring between DSX and H2TUC shelf). Check H2TUC to

verify DSX-1 LOS alarm is cleared. This verifies TX(out) and RX(in) pairs are

not swapped.

- If signal from DSX OK, verify cross-connect wiring at DSX panel is turned over

(OUT to IN) and (IN to OUT).

-If DSX wiring OK, connect test set REC to the DSX MON, network side equipment,

to verify signal from network (verify test set to MON). If no signal,

troubleshoot office problems.

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

42 61223HDSL2L2-5B

General Information

The General Information screen (Figure 43), from the main Troubleshooting screen, provides

a summary of the deployment guidelines necessary to provision this HDSL2 circuit.

Figure 43. General Information Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

HDSL2 Loop Guidelines for optimum operation

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

Non-loaded cable pair

Single bridge tap < 2Kft

Total bridge taps < 2.5Kft

Bridge tap within 1000ft of transceiver may affect performance.

Impulse noise < 50dBrnF (F filter)

Wideband noise < 31dBrnF (f filter)

Power influence <= 80 dBrnC

Longitudinal Balance >= 60dB (If using Wideband test at 196 Khz >= 40dB)

Foreign DC Voltage (t-r,t-g,r-g) < 3VDC

Loop Resistance <= 775 ohms

Margin >= 6 dB

Attenuation <= 28 dB

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 43

Chronic Circuit Guidance

Selecting the Chronic Circuit Guidance option displays the Chronic Circuit Problems screen

(Figure 44). General information about circuits with bad splices is provided as well as a menu

to the Bad Splice Detection feature.

Splices that are varying in impedance will cause the HDSL data pump to see a reduced and/or

fluctuating signal quality (margin). The HDSL data pump will attempt to track these changes,

but when the changes become too severe, errors or loss of synchronization result. This is

reflected by the symptoms described on this screen. If a circuit meets the criteria listed on the

screen then the possibility of an impedance-varying splice should be considered.

Figure 44. Chronic Circuit Problems Screen

Descriptions of the menu items on this screen are provided as follows:

•“View Splice Results” on page 43

•“Splice Histogram” on page 44

•“Reset Splice Detector” on page 45

View Splice Results

The View Splice Results screen (Figure 45) reports one of three things for each transceiver in

the Splice Detection Results column:

• NTF - No Trouble is Found on the circuit.

• LOS - Loss of Synchronization exists on the circuit (remote unit has not been detected).

• Number - A number is shown if an anomaly has been detected a number of times that

exceeds the detection count threshold of eight. The number shown in this column

represents the distance, in feet, from the transceiver (Reference Point) to that anomaly.

In this example, a detection has occurred approximately 250 feet from an H2TU-C module.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Chronic Circuit Problems

Field experience has shown that many chronic circuit failures are due to

bad splices. These type circuits generally have the following symptoms:

- Wire pairs pass all electrical tests and meet deployment guidelines.

- Large margin fluctuations will occur on the suspect pair. This can be seen

on the Detailed Status Screen. (Min & Max margins differ by > 6 dB)

- Pairs experience errored seconds (ES,SES,UAS) and/or loss of sync (LOS).

- The bad splice will most severely impair the unit closest to the splice.

This HDSL unit has the ability to test for bad splices. This detection

should be used as a last resort after all other loop testing has been

done. The detection is an approximation which can point the technician

to the general area of the suspect splice.(+/- 275 ft). For best

results, re-splice all splices close to the indicated trouble.

1. View Splice Results

2. View Histogram Screen

3. Reset Splice Detector

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

44 61223HDSL2L2-5B

The (B) Back command will allow the technician to scroll back through the last 14 days Splice

Detection Results.

Figure 45. View Splice Results Screen

Splice Histogram

The Splice Histogram Screen (Figure 46) displays the counters that the splice detector uses to

make its result decision. For HDSL2, it displays six columns. The first and fourth columns,

labeled Splice (feet), represent the distance away from the respective transceiver that the

anomaly detector is evaluating. Columns 2 and 5 display the counters incremented by an

H2TU-C module when it detects an anomaly. Columns 3 and 6 display the counters incre-

mented by an H2TU-R module when it detects an anomaly.

In this example, the distances shown are corresponding to an H2TU-C module since that is

the transceiver that has detected the anomaly. The count of 09 in the 250 feet row under the

H2TU-C column indicates that an anomaly has been seen nine times at this distance from an

H2TU-C module. Since nine is larger than the count detection threshold of eight, this result is

reported to the Splice Result screen. Since the H2TU-R column shows 00 for all counts in

columns 3 and 6, there is no reason to change (C) the view of the distance column to show the

distances an H2TU-R module is evaluating.

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

* Note: Chronic Circuit Results are only valid after all other circuit *

* qualification tests have been performed and failed to show a trouble !! *

Splice Detector Version 1 Result Definitions:

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

NTF - No Trouble Found yet.

LOS - Unit not in sync.

Number - Distance from Reference point (in ft.) of suspect splice.

Reference Splice Detection Version Result Shown

Point Results Number for date

--------- ---------------- ------- MM/DD/YY

H2TUC 0250 01 --------

H2TUR NTF 01 03/01/05

(B)Back

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 45

Figure 46. Histogram Screen

Reset Splice Detector

Choosing Reset Splice Detector will prompt to make sure a reset is desired. If Y (yes) is chosen

the splice detector will re-initialize and start running again.

Circuit ID: 11/05/04 09:29:45

Press ESC to return to previous menu

Splice Histogram Screen

H2TUC Press C to Change H2TUC

Splice | Splice |

(feet) | H2TUC H2TUR (feet) | H2TUC H2TUR

------ | ----- ----- ------ | ----- -----

0000 | 00 00 3890 | 00 00

0250 | 09 00 4170 | 00 00

0530 | 00 00 4455 | 00 00

0810 | 00 00 4740 | 00 00

1090 | 00 00 5025 | 00 00

1370 | 00 00 5310 | 00 00

1650 | 00 00 5595 | 00 00

1930 | 00 00 5880 | 00 00

2210 | 00 00 6165 | 00 00

2490 | 00 00 6450 | 00 00

2770 | 00 00 6735 | 00 00

3050 | 00 00 7020 | 00 00

3330 | 00 00 7305 | 00 00

3610 | 00 00 7590 | 00 00

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

46 61223HDSL2L2-5B

Virtual Terminal Control

The Virtual Terminal Control screen (Figure 47) is available on all modules except the Total

Access 3000 H2TU-C. It allows control of remote unit provisioning from an H2TU-C module.

Select the Log into H2TU-R option from this screen, and press ENTER to begin a user-initiated

session with the remote unit. When the remote session is completed, press CTRL+X to

terminate the session.

Figure 47. Virtual Terminal Control Screen

Circuit ID:HNTSVLALHDSL2 03/01/05 09:29:45

Press ESC to return to previous menu

Virtual Terminal Session: Inactive

Virtual Host: no

Virtual Terminal Control

1. Log into H2TU-R

Selection:

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 47

Total Access 3000 H2TU-C Flash Upgrade

Ability to download new firmware for the unit is available via the Total Access H2TU-C Flash

Image screen (Figure 48). This feature allows the download and installation of a firmware

upgrade. Any existing provisioning setting will be retained, while new provisioning items will

assume the factory default settings. Prior to installing, the H2TU-C will confirm that the

firmware is correct. When initiated, setup instructions will be displayed on the craft access

terminal.

Figure 48. Total Access 3000 H2TU-C Flash Image Screen

The Download H2TU-C via Y-Modem menu (Figure 49) allows the user to initiate a Y-Modem

file transfer from the computer connected to the SCU craft access port to the H2TU-C. This file

is transferred to the SCU and downloaded to the H2TU-C at the SCU craft port baud rate;

therefore, a higher-speed connection to the SCU is recommended (typically 115200 baud) to

reduce file download times. At 115200 baud, a typical flash download to the H2TU-C will take

less than 3 minutes.

NOTE

The file downloaded to the H2TU-C via the SCU should be of the

“.bin” file type only and will be provided for feature enhancements

and additions.

Shelf: 1 Slot: 14 Total Access System 03/01/05 10:59

Unacknowledged Alarms: INFO

Circuit ID:HntsvlALMn0103

Main SW Ver Boot SW Ver Checksum

HTUC Flash Image: A01 01 1234

Software Update

1. Download H2TU-C via Y-Modem

2. Download H2TU-C via TFTP

3. Boot Block Status

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

48 61223HDSL2L2-5B

Figure 49. Download H2TU-C via Y-Modem Menu

Figure 50 illustrates a Flash upgrade session in progress.

Figure 50. Flash Upgrade, Y-Modem in Progress

Shelf: 1 Slot: 14 Total Access System 03/01/05 10:59

Unacknowledged Alarms: INFO

Circuit ID:HntsvlALMn0103

Download H2TU-C via Y-Modem

This utility programs the H2TUC. The VT100 terminal emulation

program used must support Y-Modem file transfers and have access to

the software binary file (*.bin).

1. Start Transfer

2. Abort

Selection:

Shelf: 1 Slot: 14 Total Access System 03/01/05 10:59

Unacknowledged Alarms: MAJOR INFO

Circuit ID:

...Requesting SCU maintenance channel for Flash Upgrade process

Setup Instructions:

[Note: Your terminal program may differ slightly]

1. Select “Send File” from Transfer options.

2. Set “Transfer Protocol” to the following:

Xmodem(CRC) or Ymodem

3. Select appropriate binary file (*.BIN) to upload.

4. Upload File.

[Note: The screen will start displaying C's - this is normal.]

=CCCC

HDSL2 for General Distribution Installation and Maintenance Practice Control Port Operation

61223HDSL2L2-5B 49

The Download H2TUC via TFTP menu (Figure 51) is utilized to perform a TFTP file transfer

from a remotely located computer/server to the H2TU-C. During TFTP transfers, the SCU

continues to act as an intermediary to receive the file data from the remote computer and then

send it to the H2TU-C unit. Before initiating a TFTP transfer from the menu screen, first enter

the TFTP remote filename that is listed on H2TU-C TFTP menu (option 1). The IP address of

the remotely located computer must also be set from the network management menu on the

SCU (note: this is an SCU menu option and not an H2TU-C menu option).

In addition, the Ethernet interface of the SCU must also be provisioned properly for TFTP

transfers. The Ethernet interface settings allow the SCU to communicate properly over the

Ethernet network in which it is installed. Without setting these items up properly, neither

Telnet sessions nor remote TFTP file transfers will be available.

Refer to the appropriate SCU Installation and Maintenance Practice for details on Ethernet

settings.

Once the H2TU-C and SCU have been provisioned properly for the TFTP file transfer, select

option 2 from the H2TU-C TFTP file transfer menu screen to initiate the TFTP file transfer from

the remotely located computer to the H2TU-C. TFTP file transfers are typically faster than

Y-Modem transfers. Once the SCU receives the file from the remote computer, the file is sent

from the SCU to the H2TU-C to be downloaded (typically less than 2 minutes).

TFTP transfers can also be initiated remotely using SNMP – totally eliminating the need to be

at the Total Access 3000 shelf to update the H2TU-C.

Figure 51. Download H2TU-C via TFTP

Shelf: 1 Slot: 14 Total Access System 03/01/05 10:59

Unacknowledged Alarms: INFO

Circuit ID:HntsvlALMn0103

Download H2TUC via TFTP

This utility programs the H2TUC. You must set the SCU to the IP

address of the TFTP server that has the firmware binary file (*.bin).

1. Remote Filename = 1181113L2_a01.bin

2. Start Transfer

3. Abort

Selection:

Control Port Operation HDSL2 for General Distribution Installation and Maintenance Practice

50 61223HDSL2L2-5B

Boot Block

The Boot Block Status screen (Figure 52) provides the status of the Boot Block sector, which

in rare cases can become locked. If locked, the bootcode cannot be upgraded by future

firmware upgrades. The bootcode is seldom changed with new download code.

The bootcode is the small piece of code that allows firmware upgrades on the H4TU-C unit. If

the bootcode becomes corrupted, the H4TU-C will require factory service to restore it to a

functional state.

Figure 52. Boot Block Status Screen

Shelf: 1 Slot: 17 Total Access System 03/01/05 10:59

Unacknowledged Alarms: MAJOR INFO

Circuit ID:

Boot Block Status = OK (not locked)

HDSL2 for General Distribution Installation and Maintenance Practice HDSL2 Deployment Guidelines

61223HDSL2L2-5B 51

HDSL2 DEPLOYMENT GUIDELINES

The ADTRAN HDSL2 system is designed to provide DS1 based services over loops designed to

comply with carrier service area (CSA) guidelines. CSA deployment guidelines are given below:

• All loops are nonloaded only.

• For loops with 26-AWG cable, the maximum loop length including bridged tap lengths is

9 kilofeet.

• For loops with 24-AWG cable, the maximum loop length including bridged tap lengths is

12 kilofeet.

• Any single bridged tap is limited to 2 kilofeet.

• Total bridged tap length is limited to 2.5 kilofeet.

• The total length of multigauge cable containing 26-AWG cable must not exceed the results

obtained in the following formula:

12–[(3*L26) / (9–LBTAP)] (in kilofeet)

where L26 = Total length of 26-AWG cable excluding bridged taps (in kilofeet)

and where LBTAP = Total length of all bridged taps (in kilofeet)

These deployment criteria are summarized in the chart shown in Figure 53.

Figure 53. HDSL2 Deployment Guidelines

1234

WORKING LENGTH OF 26 GAUGE CABLE (KFT)

WORKING LENGTH OF 24 GAUGE (OR COARSER) CABLE (KFT)

56789

2.5

INVALID CABLE LENGTHS

1.5

1.0

0.5

TOTAL

BRIDGED

TAP

LENGTH

(KFT)

VALID CABLE LENGTHS

2.0

0.0

Maintenance HDSL2 for General Distribution Installation and Maintenance Practice

52 61223HDSL2L2-5B

Loop loss per kilofoot for standard wire gauges is summarized in Table 12.

An approximation for the maximum amount of wideband noise as measured using an F filter

on an HDSL2 loop having 35 dB loss is < –47 dBrnF.

An approximation for the maximum level of impulse noise as measured using an F filter on an

HDSL2 loop having 35 dB loss is ≤ –38 dBrnF.

For additional information on these and other deployment issues, refer to Supplemental

Deployment Information for HDSL, HDSL2, and HDSL4 (HDSLx), document number

61221HDSLL1-10.

NOTE

These approximations are to be used as guidelines only and may

vary slightly on different loops. Adhering to the guidelines should

produce performance in excess of 10-7 BER.

MAINTENANCE

The HDSL2 products detailed in this document do not require routine maintenance. In case of

equipment malfunction, use the front panel bantam jack connectors to isolate the source of

the problem.

ADTRAN does not recommend that repairs be performed in the field. Repair services may be

obtained by returning the defective unit to ADTRAN. For more information, refer to “Appendix

D, Warranty”.

Table 12. HDSL2 Loss Values

Cable Gauge Cable

Type Temperature

68°F 90°F 120°F

26 PIC 3.902 4.051 4.253

26 Pulp 4.030 4.179 4.381

24 PIC 2.863 2.957 3.083

24 Pulp 3.159 3.257 3.391

22 PIC 2.198 2.255 2.333

22 Pulp 2.483 2.545 2.629

19 PIC 1.551 1.587 1.634

19 Pulp 1.817 1.856 1.909

HDSL2 for General Distribution Installation and Maintenance Practice Troubleshooting

61223HDSL2L2-5B 53

TROUBLESHOOTING

Table 13 provides a H2TU-C troubleshooting guide to assist in problem resolution.

Table 13. H2TU-C Troubleshooting Guidelines

Condition Solution

All front panel indicators are

off.

1. Verify that –48 VDC power is properly connected to the shelf.

2. Inspect the fuse and verify that it is not blown.

3. Insert the H2TU-C into a slot known to be in good working condi-

tion, and check the LED indicators.

4. If steps 1 and 2 pass, but step 3 fails, replace the H2TU-C.

DSL LED is solid Red. Loop has poor signal quality or loss of sync. Basic troubleshooting

procedures should identify a problem with the cable pair.

DSX/DS1 LED is solid Red. Errors are being taken on the DSX-1, DS1 or HDSL2 loop. The craft

interface will identify the source. BERT tests toward the appropriate

loopbacks should also reveal the source of the problem.

ALM LED is solid Red. Loss of DSX-1 signal to the unit.

ALM LED is Yellow. If customer equipment is not installed, initiate an H2TU-R to Network

Loopback and perform a BERT test. If this test fails, or the craft inter-

face indicates a loss of sync, then there is a potential problem with

the cable pair that should be identified through basic troubleshooting

procedures.

Troubleshooting HDSL2 for General Distribution Installation and Maintenance Practice

54 61223HDSL2L2-5B

Table 14 provides an H2TU-R troubleshooting guide to assist in problem resolution.

Table 14. H2TU-R Troubleshooting Guidelines

Condition Solution

All front panel indicators are

off.

1. Make sure the H2TU-R is properly seated in the housing.

2. Check powering voltage:

• For Span Powered unit (1223026L2) verify that the H2TU-C is

delivering sufficient simplex voltage to the loop.

• For Local Powered unit (1223024L2) verify that –48 VDC is

properly connected.

3. If steps 1 and 2 pass, replace the H2TU-R.

Power is present and ade-

quate, but loop sync is not

available (DSL LED is off).

1. Verify that the loop conforms with CSA guidelines (not too long,

etc.). For more information, refer to “HDSL2 Deployment Guide-

lines”.

2. Verify that loop loss at 196 kHz is not greater than 35 dB.

3. Verify that noise on the HDSL2 loop is within acceptable limits.

4. If steps 1 through 3 pass and loop sync is still not available,

replace unit.

HDSL2 for General Distribution Installation and Maintenance Practice Specifications

61223HDSL2L2-5B 55

SPECIFICATIONS

Table 15 lists the product specifications for each H2TU-C included in this practice.

Table 15. H2TU-C Product Specifications

Specification Description

Loop Interface

Modulation Type:

Mode:

Number of Pairs:

Bit Rate:

Baud Rate:

Service Range:

Loop Loss:

Bridged Taps:

Performance:

H2TU-C Tx Pwr (Data) Level:

H2TU-C Tx Pwr (Activation) Level:

Input Impedance:

Maximum Loop Resistance:

Return Loss:

16-TC PAM

Full Duplex,

Partially Overlapped,

Echo Canceling

1.552 Mbps

517.333 kbaud

Defined by Carrier Service Area Guidelines

35 dB maximum @ 196 kHz

Single Taps < 2 kilofeet, Total Taps < 2.5 kilofeet

Compliant with T1.418-2002 (HDSL2 Standard)

16.6 ± 0.5 dBm (0 to 450 kHz)

16.3 ± 0.5 dBm (0 to 450 kHz)

135 ohms

775 ohms per span

12 dB (50 kHz to 200 kHz)

Network Interface

DSX-1 Line Build Out:

DS1 Line Coding:

DS1 Framing Format:

0-133 feet (default)

133-266 feet

266-399 feet

399-533 feet

533-655 feet

AMI, B8ZS (default)

Auto, Unframed (default)

Power

Tested with the ADTRAN H2TU-R (1223026L2)

Total Power:

H2TU-C Power Dissipation:

Span Power:

Fusing:

–48 VDC @ 160 mA with an H2TU-R module

4.0 watts with an H2TU-R module

–190 VDC (Internally Generated);

Class A2 compliant; current limited at 150 mA

1.00 amp (on-board; not field-replaceable)

Clock

Clock Sources:

Internal Clock Accuracy:

DSX-1 Derived (with HDSL2 frame bit stuffing)

± 25 ppm (exceeds Stratum 4); meets T1.101 tim-

ing requirements

Specifications HDSL2 for General Distribution Installation and Maintenance Practice

56 61223HDSL2L2-5B

Tests

Diagnostics: Self-Test

Local Loopback (H2TU-C)

Remote Loopback (H2TU-R)

Physical

Dimensions: Total Access 3000 H2TU-C

220 H2TU-C:

DDM+ H2TU-C:

3192 H2TU-C:

Weight:

5.35 in. high × 0.69 in. wide × 10.2 in. deep

6.00 in. high × 1.40 in. wide × 10.00 in. deep

4.00 in. high × 0.69 in. wide × 10.13 in. deep

4.75 in. high × 0.69 in. wide × 10.13 in. deep

Less than 1 pound

Environment

Temperature, Operating:

Temperature, Storage:

Relative Humidity:

–40°C to +70°C;

–40°C to +85°C

Up to 95% noncondensing

Compliance

NRTL Listed to the applicable UL standards

Bellcore NEBS Level 3 (SR-3580)

FCC 47CFR Part 15, Class A

Part Number

Total Access 3000 H2TU-C:

220 H2TU-C:

DDM+ H2TU-C:

3192 H2TU-C:

3192M H2TU-C:

1181113L2

1223001L2

1223003L2

1223004L2

1223004L12

Table 15. H2TU-C Product Specifications (Continued)

Specification Description

HDSL2 for General Distribution Installation and Maintenance Practice Specifications

61223HDSL2L2-5B 57

Table 16 lists the product specifications for each H2TU-R included in this practice.

Table 16. H2TU-R Product Specifications

Specification Description

Loop Interface

Modulation Type:

Mode:

Number of Pairs:

Bit Rate:

Baud Rate:

Service Range:

Loop Loss:

Bridged Taps:

Performance:

H2TU-C Tx Pwr (Data) Level:

H2TU-C Tx Pwr (Activation) Level:

Input Impedance:

Maximum Loop Resistance:

Return Loss:

16-TC PAM

Full Duplex,

Partially Overlapped,

Echo Canceling

1.552 Mbps

517.333 kbaud

Defined by Carrier Service Area Guidelines

Refer to the “HDSL2 Deployment Guidelines”

section.

Single Taps < 2 kilofeet, Total Taps < 2.5 kilofeet

Compliant with T1.418-2002 (HDSL2 Standard)

16.8 ± 0.5 dBm (0 to 450 kHz)

16.3 ± 0.5 dBm (0 to 450 kHz)

135 ohms

775 ohms per span

12 dB (50 kHz to 200 kHz)

Network Interface

DS1 Output Level:

DS1 Signal Input Level:

DS1 Line Coding:

DS1 Framing Format:

0 dB, –7.5 dB, –15 dB

0 to –22.5 dB

AMI, B8ZS (default)

SF, ESF (default), Auto, Unframed

Power

Tested with the ADTRAN H2TU-C (1223001L2)

1223024L2 Local Power:

1223026L2 Span Power:

H2TU-R Maximum Heat Dissipation:

Fusing:

–24 to –48 VDC

Class A2 compliant; current limited at 150 mA

3.0 watts

1.00 amp (on-board; not field-replaceable)

Clock

Clock Sources:

Internal Clock Accuracy:

HDSL2 loop derived

± 25 ppm (exceeds Stratum 4); meets T1.101 tim-

ing requirements

Specifications HDSL2 for General Distribution Installation and Maintenance Practice

58 61223HDSL2L2-5B

Tests

Diagnostics: Self Test

Loopback (H2TU-R) initiated with T1 NIU in-

band codes

Loopback (H2TU-R) initiated with H2TU-C

command

Loopback (H2TU-R) initiated manually

Loopback (H2TU-R) initiated from H2TU-R con-

trol port

Physical

Dimensions: T200 H2TU-R:

Weight:

Height: 5.50 inches

Width: 0.69 inch

Depth: 6.00 inches

Less than 1 pound

Environment

Temperature, Operating:

Temperature, Storage:

Relative Humidity:

–40°C to +70°C;

–40°C to +85°C

Up to 95% noncondensing

Compliance

NRTL Listed to the applicable UL standards

Bellcore NEBS Level 3 (SR-3580)

FCC 47CFR Part 15, Class A

Part Number

1223024L2:

1223026L2:

T200 H2TU-R, Local Powered

T200 H2TU-R, Span Powered

Table 16. H2TU-R Product Specifications (Continued)

Specification Description

61223HDSL2L2-5B A-1

Appendix A

HDSL2 Loopbacks

HDSL2 LOOPBACK AND CONTROL CODES

This appendix describes the operation of the HDSL2 system in detection of inband and ESF

facility data link loopback codes.

Upon deactivation of a loopback, the HDSL2 system will synchronize automatically.

Loopback Process Description

In general, the loopback process for the HDSL2 system elements is modeled on the corre-

sponding DS1 system process. Specifically, the H2TUC loopback is similar to an Intelligent

Office Repeater loopback and the H2TU-R loopbacks are similar to an in-line T1 Repeater

loopback.

In-band control code sequences are transmitted over the DS1 link by either the unframed or

overwrite method. The HDSL2 elements respond to either method.

The unframed method produces periodic control sequences and the normal DS1 framing bit is

omitted.

The overwrite method produces periodic control sequences. However, once per frame, the

framing bit overwrites one of the bits in the control sequence.

The unit can detect the loopback activation or deactivation code sequence only if an error rate

of 1E-03 or better is present.

DDS Latching Loopback Operation

If the unit is optioned for FT1 mode, then DDS Latching Loopback operation is supported as

described in Bellcore TA-TSY-000077, Issue 3, Section 5.1.3. The H2TU-C in the HDSL2

circuit is treated as an Identical Tandem Dataport, and the H2TU-R is treated as a Different

Tandem Dataport. The H2TU-R will establish a network loopback upon detection of standard

DDS NI-NEI/RPTR loopback sequence.

Loopback Control Codes

A summary of control sequences is given in Table A-1 and Table A-2.

HDSL2 Loopback and Control Codes HDSL2 for General Distribution Installation and Maintenance Practice

A-2 61223HDSL2L2-5B

NOTE

In all control code sequences presented, the inband codes are

shown leftmost bit transmitted first, and the ESF data link codes

with rightmost bit transmitted first.

Table A-1. HDSL2 Loopback Control Codes

Type Source * Code Name

Abbreviated (N)

(N)

(C)

3in7 (1110000)

4in7 (1111000)

5in7 (1111100)

6in7 (1111110)

Loopback data from network toward network in

the H2TU-R

Loopback data from network toward network in

the H2TU-C

Loopback data from customer toward customer

in the H2TU-R

Loopback data from customer toward customer

in the H2TU-C

Wescom (N)

(C)

(N)

(C)

(N)

(N/C)

FF1E

(1111 1111 0001 1110)

3F1E

(0011 1111 0001 1110)

FF02

(1111 1111 0000 0010)

3F02

(0011 1111 0000 0010)

FF48 (ESF-DL)

(1111 1111 0100 1000)

1in3 (100)

FF24 (ESF-DL)

(1111 1111 0010 0100)

Loopback data from network toward network at

H2TU-C

Loopback data from customer toward customer

at H2TU-C

Loopback data from network toward network at

H2TU-R

Loopback data from customer toward customer

at H2TU-R

Loopback data from network toward network at

H2TU-R

Loop down everything

* The Source column indicates from which side of the interface the control codes are sent. For example, an (N)

indicates a network sourced code while a (C) indicates a customer sourced code.

Note: All codes are in-band unless labeled ESF-DL.

Note: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted

upon.

HDSL2 for General Distribution Installation and Maintenance Practice HDSL2 Loopback and Control Codes

61223HDSL2L2-5B A-3

Table A-2. In-Band Addressable Loopback Codes

(All codes listed below must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.)

Function Code Source Code and Response

Arm 11000 (2-in-5 pattern) (N) If the pattern is sent from the network, the units

arm, and the H2TU-R loops back if Smartjack Loop-

back is enabled.

Disarm 11100 (3-in-5 pattern) (N/C) The H2TU-C is removed from the armed state. Any

units in loopback when the 11100 pattern is

received loop down. The LBK LEDs extinguish on all

units.

H2TU-C

Network

Loopback

D3D3

(1101 0011 1101 0011)

(N) If the units have been armed and no units are in

loopback, the H2TU-C loops back toward the net-

work, 2 seconds of AIS (all ones) are sent, 5 seconds

of data pass, and then 231 bit errors are injected

into the DSX-1 signal. As long as the pattern contin-

ues to be sent, 231 errors are injected every 20 sec-

onds. When the pattern is removed, the unit remains

in loopback. If the pattern is reinstated, the injection

of 231 bit errors resumes at 20-second intervals.

If Smartjack Loopback is enabled, then the H2TU-R

can be in network loopback when the H2TU-C loop-

up codes are sent.

HRE

Network

Loopback

C741

(1100 0111 0100 0001)

(N) If an HRE is present, the units have been armed, the

HRE loops back towards the network, 2 seconds of

AIS (all 1s) are sent, 5 seconds of data pass, and

then 10 bit errors will be injected into the DSX-1 sig-

nal. As long as the pattern continues to be sent, 10

bit errors are injected every 20 seconds. When the

pattern is removed, the unit remains in loopback. If

the pattern is reinstated, the injection of 10 bit

errors resumes at 20-second intervals.

H2TU-R

Loopback

C742

(1100 0111 0100 0010)

(N) When set from the network, an HTU-R network loop-

back is activated and a 20-bit error confirmation is

sent every 10 seconds.

Loop

Down

9393

(1001 0011 1001 0011)

(N) When sent from the network, all units currently in

loopback loop down. Armed units do not disarm. In

order to behave like a smartjack, the H2TU-R does

loop down from a network loopback in response to

the 9393 pattern, if Smartjack Loopback is enabled.

HDSL2 Loopback and Control Codes HDSL2 for General Distribution Installation and Maintenance Practice

A-4 61223HDSL2L2-5B

Loopback

Query

D5D5

(1101 0101 1101 0101)

(N) If unit is in loopback towards pattern, errors are

periodically injected toward pattern as long as pat-

tern is present.

H2TU-C 231 Errors every 20 seconds

HRE 10 Errors every 20 seconds.

H2TU-R 20 Errors every 10 seconds.

Loopback

Time Out

Override

D5D6

(1101 0101 1101 0110)

(N) If the units are armed and this pattern is sent, the

loopback time out is disabled. The time out option is

updated on the Provisioning menu of the H2TU-R to

“None” (viewable through the RS-232 port). As long

as the units remain armed, the time out remains

disabled. When the units are disarmed, the loopback

time out returns to the value it had before the D5D6

code was sent. As long as the pattern continues to be

sent, errors are injected again every 20 seconds as

follows:

H2TU-C 231 errors

H2TU-R 20 errors

Span

Power

Disable

6767

(0110 0111 0110 0111)

(N) If the units are armed and this pattern is sent, the

H2TU-C deactivates the span power supply, turning

off the H2TU-R. As long as the pattern continues to

be sent, the span power supply remains disabled.

When the pattern is no longer being sent, the

H2TU-C reactivates the span power supply, turning

the remote unit(s) on. All units retrain and return to

the disarmed and unlooped state.

Table A-2. In-Band Addressable Loopback Codes (Continued)

(All codes listed below must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.)

Function Code Source Code and Response

61223HDSL2L2-5B B-1

Appendix B

HDSL2 Features

HDSL NEW ENHANCED FEATURE OVERVIEW

The new HDSL2 and HDSL4 products contain new features to enhance their performance and

help the customer reduce down time. The following features are described in this appendix:

•“TScan” on page 1

•“Splice Detection Feature” on page 2

•“Fault (GFI, Short) Bridging” on page 9

•“Fast Retrain Feature” on page 10

TScan

This unit is equipped to support the TScan™ feature, which provides data retrieval and

diagnostic capabilities for remote management of DS1 circuits. TScan allows provisioning,

performance, and event history information to be retrieved by the test center via the Facility

Data Link (FDL). In addition, TScan can be used to determine the nature and location of faults

on DS1 trouble circuits. TScan is accessible only through the remote test center.

TScan is a patent-pending, single-ended, diagnostic routine residing on a host server at the

central test facility that issues commands and retrieves data via FDL from the H2TU-C.

TScan performs the following functions (see Figure B-1):

• Detection and location of an open on one or both conductors

• Detection and location of a short between Tip and Ring

• Detection and location of a ground fault from either or both conductors

• Detection of foreign voltage

• H2TU-C Self Diagnostics

• Remote detection of the presence or absence of a ground connection in the remote mount

Use TScan to integrate these capabilities across multiple computing platforms with existing

operating systems.

HDSL New Enhanced Feature Overview HDSL2 for General Distribution Installation and Maintenance Practice

B-2 61223HDSL2L2-5B

Figure B-1. TScan Diagnostic Capabilities

NOTE

For implementation of TScan please contact an ADTRAN sales

representative.

Splice Detection Feature

Runtime TScan 2.0TM splice detection feature is an ADTRAN proprietary non-intrusive

algorithm for detection of anomalies (bad splices) in the copper pair.

Data transmission transceivers (especially echo-cancelled technologies) are subject to perfor-

mance degradations and errors in the presence of bad splices. A splice may be benign for a

period of time, allowing a circuit to behave appropriately for portions of the day. However, over

time the splice will oxidize and incur small, rapid changes in impedance. This inconsistency in

behavior makes the problem difficult to locate. Additionally, an impedance change that is

large enough to cause the transceiver trouble may still be small enough to be undetected by

test equipment utilized on the copper pairs. Therefore a non-intrusive method of identifying

these bad splices has been developed to aid the customer in troubleshooting their distribution

plant.

NOTE

The Splice Detection Feature is included with this product as an aid

to troubleshooting. Due to inconsistency in environmental condi-

tions and their effect on telecommunications plant, ADTRAN cannot

guarantee the accuracy of the measurements. Comparison to

existing engineering drawings should provide exact locations of

suspect splices indicated by ADTRAN algorithms.

CO Outside Plant Facilities

ROpen on either conductor

CROpen on both conductors

CRShort between T&R

Short to ground from eith

or both conductors

HDSL2 for General Distribution Installation and Maintenance Practice HDSL New Enhanced Feature Overview

61223HDSL2L2-5B B-3

The support mechanisms for this feature can logically be divided into the following six

segments:

These support mechanisms are described in the following subsections.

Splice Detection Algorithm

The splice detection algorithm is designed to detect bad splices in training mode and data

mode. The training mode detection is important if the splice is bad enough to prevent synchro-

nization. In data mode, the detector will run periodically after synchronization is achieved.

The HDSL2/HDSL4 transceiver monitors the loop for impedance changes that are of a

magnitude to cause the received signal of the transceiver to be degraded. When a significant

impedance change is detected by the transceiver, the approximate distance from that trans-

ceiver to the anomaly is recorded on the Splice Histogram screen by incrementing the appro-

priate counter. When enough counts are accumulated at a particular distance, this distance

will be reported on the Splice Results screen.

Screen Support

The craft terminal port allows access to the splice detection menus via the Troubleshooting

selection on the main menu. The Chronic Circuit Guidance selection takes the customer to

the main splice detection screen which describes the symptoms of a circuit with bad splices.

This menu provides three choices:

1. View Splice Results - This option will displays a screen that provides the results of the

splice detection tests. These results are calculated for each receiver point on the circuit. If

multiple bad splices are detected for a receiver, the worst is reported.

2. View Histogram Screen - Choosing this option will take the customer to the Histogram

Screen which displays the raw counters for each element at all receiver points.

3. Reset Splice Detector - Choosing this option will allow the customer to reset the splice

detector. This choice requires a confirmation. The reset of the detector is done locally and

the command is sent across the EOC so that all units will also reset their detectors.

EOC Support

To get full coverage of the loop, all elements in the circuit run a local detector and then

transmit the results (local histogram counts and corresponding distance buffers) of that

detection across the EOC to the terminating units (CO and RT). The terminating units then

use these counts to present a result to the customer.

FDL Support

All the information available on the troubleshooting screens is also available via the FDL,

allowing the detection to be monitored via network management utilities.

• Splice Detection Algorithm • FDL Support

• Screen Support • EEPROM Support

• EOC Support • Event Support

HDSL New Enhanced Feature Overview HDSL2 for General Distribution Installation and Maintenance Practice

B-4 61223HDSL2L2-5B

EEPROM Support

The results of the splice detector are stored to the Electronically Erasable Programmable

Read-Only Memory (EEPROM) on a daily basis at the same time the 24-hour PM registers are

stored to EEPROM. A total of 14 days splice detection history is retained. This history is read

from the EEPROM upon power up.

Event Support

An event log entry “Splice Detector Reset” is made any time the splice detector is reset. Also an

event log entry “Bad Splice Detected” is made on the first detection occurrence seen since the

last splice detection reset. This entry serves to alert the technician that a trouble has been

detected without filling up the event log.

Splice Detection Screens

Chronic Circuit Screen

The Chronic Circuit screen (Figure B-2) displays general information about circuits with bad

splices.

Figure B-2. Chronic Circuit Screen

NOTE

Since this detector employs a very sensitive measurement, it is

imperative that all obvious troubles be cleared prior to relying on the

splice detection information for troubleshooting the circuit. This is

reflected by the following screen statement: “Wire pairs pass all

electrical tests and meet deployment guidelines.”

Circuit ID: Chronic Circuit 01/09/05 11:34:00