ADTRAN HDSL4 Instruction Manual

HDSL4 for General Distribution
Installation and Maintenance Practice
Document Number: 61223HDSL4L2-5C
August 2005
Total Access 3000 H4TU-C 1181413L2 SIC4W3XD_ _
220 H4TU-C 1223401L2 T1L8PNMC_ _
DDM+ H4TU-C 1223403L2 T1L8VOSC_ _
3192 H4TU-C 1223404L2 T1L8YHWC_ _
3192M H4TU-C 1223404L12 T1L9EFGA_ _
T200 H4TU-C 1223406L2 T1T2JE0B_ _
T200 H4TU-R, Local Powered 1223424L2 T1L497PC_ _
T200 H4TU-R, Span Powered 1223426L2 T1L85M7C_ _
239 H4R
1223445L1
LP1
NET
LP2
LP1
LP2
LL RL
(Y ) (G)
/
CUST
REM
LOC
LBK
1223426L2
DSL 1
DSL 2
DS1
ALM
(GRN)
(YEL)
ESF/SF
(GRN)
(YEL)
(GRN)
(YEL)
B8ZS/AMI
LLB/RLB
RX
M
O
N
TX
R
S
2
3
2
1181413L2
EQ
T
X
MON
R
X
T
X
R
X
DSL 2
DSL 1
DSX/DS1
ALM
B8ZS/AMI
(YEL) (GRN)
ESF/ SF
(YEL) (GRN)
LBK
239 H4R
1223445L1
LP1
NET
LP2
LP1
LP2
LL RL
(Y ) (G)
CUST
/
DS1
HDSL4DSX-1
®

HDSL4 for General Distribution Installation and Maintenance Practice
ii 61223HDSL4L2-5C
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
[phone]
©2005 ADTRAN, Inc.
All Rights Reserved.
®

HDSL4 for General Distribution Installation and Maintenance Practice
61223HDSL4L2-5C 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+Xindicates that the ALT key and Xkey 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 products: 3192M H2TU-C and T200 H2TU-C;
Add TScan to front panel illustrations; Add clarifying notes in Powering and Craft
Access sections; update screen prints for Bad Splice Detection and Flash Upgrade
CAugust 2005 Add three-repeater support information.

HDSL4 for General Distribution Installation and Maintenance Practice
iv 61223HDSL4L2-5C
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, contact ADTRAN:
Training Phone: [phone], ext. 7500
Training Fax: [phone]
Training Email: [email protected]

61223HDSL4L2-5C v
Contents
Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Illustrations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
H4TU-C Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
H4TU-R Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Powering Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
H4TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
H4TU-R Span Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
H4TU-R Local Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Total Access 3000 and 220/E220 H4TU-C Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
All Other Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Edge Connector Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Total Access 3000 H4TU-C Edge Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Total Access 3000 Chassis Amphenol Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Provisioning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Provisioning Options, Total Access 3000 H4TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
HDSL4 System Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
H4TU-C Bantam Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
H4TU-R Bantam Jacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
H4TU-R Front Panel Pushbuttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Front Panel LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Control Port Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Accessing the HDSL4 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Accessing the HDSL4 Main Menu (Total Access 3000 H4TU-C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Total Access 3000 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Access Module Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
HDSL4 Main Menu (Total Access 3000 H4TU-C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
HDSL4 Unit Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Provisioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Provisioning Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Provisioning Menu (Total Access 3000 H4TU-C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Span Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Span Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Contents HDSL4 for General Distribution Installation and Maintenance Practice
vi 61223HDSL4L2-5C
Span Status Screen (Total Access 3000 H4TU-C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
View Detailed Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
View Auto In Service Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Loopbacks and Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Loopbacks and Test Commands Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Loopback and Test Commands Menu (Total Access 3000 H4TU-C) . . . . . . . . . . . . . . . . . . . . . . . . 32
BERT Test Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
(Re)start Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Stop Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Select Data Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Enter Test Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Toggle Test Direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Inject Bit Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Performance History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scratch Pad, Circuit ID and Date/Time Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Terminal Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
T1 Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
HDSL4 Facility Alarm History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
HDSL4 Span History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Event History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
The System PM/Screen Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Clear PM and Alarm Histories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Chronic Circuit Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
View Splice Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
View Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Reset Splice Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Flash Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Download HTUC via Y-Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Download HTUC via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Boot Block Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Virtual Terminal Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
HDSL4 Deployment Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Cable Characteristics for HDSL4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Range Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Resistance Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Span Powering Two Repeaters with Span Powered Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Span Powering Three Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
H4TU-C Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
H4TU-R Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Appendix A
Loopback, Control Codes, and Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
HDSL4 Maintenance Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

HDSL4 for General Distribution Installation and Maintenance Practice Contents
61223HDSL4L2-5C vii
Loopback Process Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Appendix B
HDSL4 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
HDSL NEW ENHANCED FEATURE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Total Access 3000 H4TU-C FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Auto In Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
Bit Error Rate Testing (BERT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1
TScan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2
Bad Splice Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Splice Detection Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-3
Screen Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
EOC Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
FDL Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
EEPROM Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Event Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-4
Splice Detection Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
Chronic Circuit Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5
View Splice Results Screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
Reset Splice Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-6
View Splice Histogram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7
Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-8
Using the Bad Splice Detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-9
Fault (GFI, Short) Bridging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-10
Fast Retrain Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-11
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-3
MUX EQ, Tx to Network, Rx from the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
MUX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4
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

Contents HDSL4 for General Distribution Installation and Maintenance Practice
viii 61223HDSL4L2-5C
Figures
Figure 1. ADTRAN HDSL4 Central Office Units for General Distribution . . . . . . . . . . . . . . . . . . . . . 2
Figure 2. ADTRAN HDSL4 Remote Units for General Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Figure 3. H4TU-C Span Powering Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. 220 and DDM+ H4TU-C Edge Connector Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5. 3192M, 3192, T200 H4TU-C and T200 H4TU-R Edge Connector Wiring . . . . . . . . . . . . . 9
Figure 6. Total Access 3000 H4TU-C Edge Connector Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 7. Bantam Jack Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8. HDSL4 Loopbacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. RS-232 (DB-9) Pin Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 10. ADTRAN HDSL4 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11. Logon Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12. Total Access Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 13. Access Module Menus Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 14. Total Access 3000 H4TU-C Main Menu Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 15. ADTRAN Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 16. Provisioning Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 17. Total Access 3000 H4TU-C Provisioning Screen 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 18. Total Access 3000 H4TU-C Provisioning Screen 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 19. Span Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 20. Total Access 3000 H4TU-C Span Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 21. Detailed Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 22. Auto In Service Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 23. Loopback and Test Commands Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 24. Total Access 3000 H4TU-C Loopback and Test Commands Screen . . . . . . . . . . . . . . . 32
Figure 25. BERT Test Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 26. Select Data Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 27. BERT Test Functions - Selection 4, Enter Test Time Out . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 28. BERT Inject Errors Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 29. Performance History, 15-Minute Line Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Figure 30. Performance Data Definitions, Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 31. Performance Data Definitions, Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Figure 32. Scratch Pad, Circuit ID, and Date/Time Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 33. Terminal Mode Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 34. T1 Alarm History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 35. HDSL4 Facility Alarm History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 36. HDSL4 Span History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 37. Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Figure 38. System PM/Screen Report Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 39. Clear PM and Alarm Histories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 40. Troubleshooting Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 41. Troubleshooting Guidance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 42. General Information Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 43. Chronic Circuit Problems Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Figure 44. View Splice Results Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 45. Splice Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 46. Total Access 3000 H4TU-C Flash Image Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 47. Download H4TU-C via Y-Modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

HDSL4 for General Distribution Installation and Maintenance Practice Contents
61223HDSL4L2-5C ix
Figure 48. Download via Y-Modem, in Progress . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 49. Download H4TU-C via TFTP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 50. Boot Block Status Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 51. Virtual Terminal Control Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 52. HDSL4 Circuit Segments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 53. Resistance Budget, Span Powering Two Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Figure 54. Resistance Budget, Span Powering Two Repeaters (Example) . . . . . . . . . . . . . . . . . . . 59
Figure B-1. TScan Diagnostic Capabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
Figure B-2. Chronic Circuit Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-5
Figure B-3. Splice Results Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-6
Figure B-4. Splice Histogram Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7
Figure B-5. Event History Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-8
Figure C-1. DSX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1
Figure C-2. DSX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Figure C-3. DSX EQ, Tx to Customer, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2
Figure C-4. MUX MON, Tx to Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
Figure C-5. MUX MON, Rx from Customer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3
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-4

Contents HDSL4 for General Distribution Installation and Maintenance Practice
x61223HDSL4L2-5C
Tables
Table 1. HDSL4 Central Office Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. HDSL4 Remote Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 3. H4TU-R Enclosure Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Table 4. Compliance Codes, H4TU-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 5. Compliance Codes, H4TU-R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Table 6. Provisioning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 7. Total Access 3000 Additional Provisioning Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 8. H4TU-C Front Panel LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 9. H4TU-R Front Panel LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 10. Auto In Service Status Indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table 11. Attenuation limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 12. Range Limits: 26 Gauge / 70°F / PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 13. Range Limits: 24 Gauge / 70°F / PIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 14. Single Pair DC Resistance Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 15. H4TU-C Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 16. H4TU-R Troubleshooting Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Table 17. H4TU-C Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Table 18. H4TU-R Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Table A-1. HDSL4 Loopback Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
Table A-2. Loopback Control Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3

61223HDSL4L2-5C 1
HDSL4 for General Distribution
PRODUCT DESCRIPTION
The HDSL4 modules referenced in this document are used to deploy a T1 circuit using 4-wire
metallic facilities. HDSL4 provides extended range to DS1/T1 transport while providing
spectral compatibility with ADSL and other transport technologies. The ADTRAN HDSL4
Transceiver Unit for Central Office (H4TU-C) works in conjunction with the ADTRAN HDSL4
Remote Transceiver Unit (H4TU-R) to provide extended-range DS1 service on the local loop.
The H4TU-C receives DSX-1 signals, converts them, and provides HDSL4 signals to the local
loop. The H4TU-R receives the HDSL4 signals from the H4TU-C and provides DS1 signals to
the customer. Up to three H4R repeaters may be utilized to extend the service range. See
“HDSL4 Deployment Guidelines” on page 55 for details.
New features available with this product release are described in detail in “Appendix B,
HDSL4 Features”.
Table 1 lists the ADTRAN HDSL4 Central Office modules approved for general distribution.
Table 2 lists the ADTRAN HDSL4 remote modules provided for general distribution.
Table 1. HDSL4 Central Office Modules
HDSL4 Module Part Number CLEI Code
Total Access 3000 H4TU-C 1181413L2 SIC4W3XD_ _
220 H4TU-C 1223401L2 T1L8PNMC_ _
DDM+ H4TU-C 1223403L2 T1L8VOSC_ _
3192 H4TU-C 1223404L2 T1L8YHWC_ _
3192M H4TU-C 1223404L12 T1L9EFGA_ _
T200 H4TU-C 1223406L2 T1T2JE0B_ _
Table 2. HDSL4 Remote Modules
HDSL4 Module Part Number CLEI Code
T200 H4TU-R, Local Powered 1223424L2 T1L497PC_ _
T200 H4TU-R, Span Powered 1223426L2 T1L85M7C_ _

Product Description HDSL4 for General Distribution Installation and Maintenance Practice
261223HDSL4L2-5C
Illustrations
Figure 1 illustrates the front panels of the ADTRAN H4TU-C modules approved for general
distribution.
Figure 1. ADTRAN HDSL4 Central Office Units for General Distribution
220 H4TU-C
P/N 1223401L2
DDM+ H4TU-C
P/N 1223403L2
3192 H4TU-C
P/N 1223404L2
Total Access 3000
H4TU-C
P/N 1181413L2
1181413L2
EQ
T
X
MON
R
X
T
X
R
X
DSL 2
DSL 1
DSX/DS1
ALM
B8ZS/AMI
(YEL) (GRN)
ESF/ SF
(YEL) (GRN)
LBK
1223401L2
DSL
1
DSL
2
TX
E
Q
RX
TX
M
O
N
R
S
2
3
2
RX
DSX
DSX
/DS1
ALM
LBK
ESF
/SF
B8ZS
/AMI
1223403L2
R
S
2
3
2
TX
TX
RX
DSX MON
DSX EQ
RX
DSX/
DS1
ALM
DSL
1
DSL
2
LBK
ESF
/SF
B8ZS
/AMI
1223404L2
DSX
/DS1
ALM
DSL 1
DSL 2
R
S
2
3
2
LBK
ESF
/SF
B8ZS
/AMI
TX
RX
TX
RX
DSX MON
DSX EQ
1223404L12
DSX
/DS1
ALM
DSL 1
DSL 2
R
S
2
3
2
LBK
ESF
/SF
B8ZS
/AMI
TX
RX
TX
RX
DSX MON
DSX EQ
3192M H4TU-C
P/N 1223404L12
1223406L2
D
S
X
TX
RX
E
Q
M
O
N
TX
RX
DSL 2
DSX/DS1
ALM
ESF/SF
B8ZS/AMI
LBK
DSL 1
T200 H4TU-C
P/N 1223406L2

HDSL4 for General Distribution Installation and Maintenance Practice Product Description
61223HDSL4L2-5C 3
Figure 2 illustrates the front panels of the ADTRAN H4TU-R modules approved for general
distribution.
Figure 2. ADTRAN HDSL4 Remote Units for General Distribution
Table 3. H4TU-R Enclosure Compatibility
Part Number Description1Document Number
1242007Lx HR12 Metal Enclosure Remote Shelf 61242007Lx-5x
1242008L1 HR4 Remote Shelf 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 H4TU-C must be installed in NEBS compliant and UL listed enclosures to insure full
compliance with this unit.
2. The ADTRAN T200 Dual-Mount housing (P/N 1245034L1) is required when using the T200 H2TU-C for HDSL
Loop Support System (HLSS™) protection circuits.
T200 H4TU-R,
LOCAL POWERED
P/N 1223424L2
REM
LOC
LBK
1223424L2
LOCAL
DSL 1
DSL 2
DS1
ALM
(GRN)
(YEL)
ESF/SF
(GRN)
(YEL)
(GRN)
(YEL)
B8ZS/AMI
LLB/RLB
RX
M
O
N
TX
R
S
2
3
2
T200 H4TU-R,
SPAN POWERED
P/N 1223426L2
REM
LOC
LBK
1223426L2
DSL 1
DSL 2
DS1
ALM
(GRN)
(YEL)
ESF/SF
(GRN)
(YEL)
(GRN)
(YEL)
B8ZS/AMI
LLB/RLB
RX
M
O
N
TX
R
S
2
3
2

Product Description HDSL4 for General Distribution Installation and Maintenance Practice
461223HDSL4L2-5C
Compliance
ADTRAN HDSL4 modules are NRTL listed to the applicable UL standards. The HDSL4
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.
H4TU-C Compliance
Table 4 shows the compliance codes for the H4TU-C modules.
The H4TU-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.
H4TU-R Compliance
Table 5 shows the compliance codes for the H4TU-R modules.
The H4TU-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, H4TU-C
Code Input Output
Power Code (PC) F C
Telecommunication Code (TC) – X
Installation Code (IC) A –
Table 5. Compliance Codes, H4TU-R
Code Input Output
Power Code (PC) C C
Telecommunication Code (TC) X X
Installation Code (IC) A –

HDSL4 for General Distribution Installation and Maintenance Practice Installation Guidelines
61223HDSL4L2-5C 5
INSTALLATION GUIDELINES
After unpacking an HDSL4 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 HDSL4 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.
Powering Options
H4TU-C
The H4TU-C is default enabled for span powering mode. The H4TU-C has the ability to power
one, two, or three elements and can be set to have span power disabled when the H4TU-R is
locally powered and no H4Rs are on the circuit.
C A U T I O N
C A U T I O N
!
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.

Installation Guidelines HDSL4 for General Distribution Installation and Maintenance Practice
661223HDSL4L2-5C
CAUTION
Disabling the span power removes all voltage from the HDSL4 loop.
This results in an absence of sealing current which could have an
adverse effect on circuit continuity over an extended period of time.
The H4TU-C uses a DC-to-DC converter to derive its internal logic and span powering voltages
from the –48 VDC office supply. The H4TU-C can span power three modules (an H4TU-R and
up to two H4Rs as listed above) by applying –190 VDC power to the local loop. The span
powering voltage is less than –200 volts with GFI protection to less than 5 mA. The span
powering supply is current limited to approximately 150 mA.
Refer to Figure 3. The differential span power output voltage is measured between Loop 1 and
Loop 2 (reference to Loop 1) and is typically –185 VDC. Loop 1 shows a typical voltage of –6
VDC with respect to ground potential, while the Loop 2 potential is typically –191 VDC with
respect to ground potential.
Figure 3. H4TU-C Span Powering Diagram
H4TU-R Span Power
The H4TU-R P/N 1223426L2 receives span power from the H4TU-C.
H4TU-R Local Power
In some circumstances a locally powered remote unit is required. The H4TU-R P/N
1223424L2 can meet those needs.
TC PAM
HDSL4
SPAN POWER
REGULATOR SPAN CURRENT -185 VDC
pin 26 (220)
101 (DDM+)
K (3192)
pin 27 (220)
102 (DDM+)
9 (3192)
pin 34 (220)
105 (DDM+)
F (3192)
pin 35 (220)
106 (DDM+)
6 (3192)
LOOP 2
(-191 VDC)
LOOP 1
(-6 VDC)

HDSL4 for General Distribution Installation and Maintenance Practice Connections
61223HDSL4L2-5C 7
Module Installation
Follow the step-by-step procedures below to put the HDSL4 modules in service.
Total Access 3000 and 220/E220 H4TU-C Installation
To install the Total Access 3000 H4TU-C (P/N 1181413L2) or 220 H4TU-C module (P/N
1223401L2), perform the following steps:
1. Pull the ejector latch (located on the bottom of the module front panel) out from its 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.
4. Slide the unit into the module slot. Simultaneous thumb pressure at the top and bottom
of the unit ensures 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 HDSL4 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 ensures that the module is firmly seated against the backplane of
the enclosure.
Initialization
When a module is installed, it runs a series of self-tests. Once the self-tests are complete, the
status LEDs reflect the true state of the hardware. Refer to “Front Panel LED Indicators” on
page 17 for LED indications.
CONNECTIONS
An H4TU-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 HDSL4 loop signals are connected to the wire-wrap pins or mass termi-
nation (amphenol) shelf connectors corresponding to the slot the module occupies.

Connections HDSL4 for General Distribution Installation and Maintenance Practice
861223HDSL4L2-5C
Edge Connector Wiring
Figure 4, Figure 5, and Figure 6 specify edge connection wiring required for proper
operation.
Figure 4. 220 and DDM+ H4TU-C Edge Connector Wiring
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
-48 VDC RET
Loop 1 HDSL4 Tip (Wire-Wrap)
Loop 1 HDSL4 Ring (Wire-Wrap)
-48 VDC (1)
DSX-1 Rx In Tip (Wire-Wrap)
DSX-1 Rx In Ring (Wire-Wrap)
-48 VDC RET
DSX-1 Tx Out Tip (Wire-Wrap)
DSX-1 Tx Out Ring (Wire-Wrap)
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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
LP1 Tip
LP1 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
-48 VDC Return
DDM+ Edge
Connector Wiring
Loop 2 HDSL4 Tip (Wire-Wrap)
Loop 2 HDSL4 Ring (Wire-Wrap)
LP2 Tip
LP2 Ring
Chassis Ground

HDSL4 for General Distribution Installation and Maintenance Practice Connections
61223HDSL4L2-5C 9
Figure 5. 3192M, 3192, T200 H4TU-C and T200 H4TU-R Edge Connector Wiring
3192 Edge
Connector Wiring
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
F
H
J
K
L
R1 Rx DSX (Out to DSX)
R Tx DSX (In from DSX)
-48 VDC Return
-48 VDC
R HDSL4 Loop 1
Fuse Alarm (to Alarm Module)
T Tx DSX (In from DSX)
T1 Rx DSX (Out to DSX)
Frame Ground
T HDSL4 Loop 1
T200 H4TU-R Edge
Connector Wiring
R1 HDSL4 Loop 2
T1 HDSL4 Loop 2
RCV LOS (to Alarm Module)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Chassis Ground
DS1 RX Out Tip (to customer)
HDSL4 Loop 1 Tip (facility)
Chassis Ground
HDSL4 Loop 1 Ring (facility)
DS1 RX Out Ring (to customer)
48 VDC Return (Local Power-Range 24 to 56 VDC, + or -)
Chassis Ground
48 VDC (Local Power-Range 24 to 56 VDC, + or -)
HDSL4 Loop 2 Tip
HDSL4 Loop 2 Ring (facility)
DS1 TX In Ring (from customer)
DS1 TX In Tip (from customer)
3192M Edge
Connector Wiring
1
2
3
4
5
6
7
8
9
10
A
B
C
D
E
F
H
J
K
L
R1 Rx DSX (Out to DSX)
R Tx DSX (In from DSX)
-48 VDC Return
-48 VDC
R HDSL4 Loop 1
Fuse Alarm (to Alarm Module)
T Tx DSX (In from DSX)
T1 Rx DSX (Out to DSX)
Frame Ground
T HDSL4 Loop 1
R1 HDSL4 Loop 2
T1 HDSL4 Loop 2
RCV LOS (to Alarm Module)
HMU Management Bus
T200 H4TU-C Edge
Connector Wiring
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Chassis Ground
HDSL4 Loop 1 Tip (facility)
DS1 RX Out Tip (to customer)
Chassis Ground
DS1 RX Out Ring (to customer)
HDSL4 Loop 1 Ring (facility)
–48 VDC Return
Chassis Ground
–48 VDC
DS1 TX In Tip (from customer)
DS1 TX In Ring (from customer)
HDSL4 Loop 2 Tip
HDSL4 Loop 2 Ring (facility)

Connections HDSL4 for General Distribution Installation and Maintenance Practice
10 61223HDSL4L2-5C
Total Access 3000 H4TU-C Edge Connector
Figure 6 illustrates the edge connector wiring for the Total Access 3000 H4TU-C module.
Figure 6. Total Access 3000 H4TU-C Edge Connector Wiring
Total Access 3000 Chassis Amphenol Connectors
The Total Access 3000 shelf delivers DSX-1 from the network to the H4TU-C via connectors on
the backplane labeled “Pair 7” and “Pair 8”. The HDSL4 signal is provided toward the
customer via the backplane connectors labeled “Pair 1” and “Pair 2”. Pins 1 and 33 of the
connectors Pair 7 and Pair 8 are the DSX connections for the H4TU-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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
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
Chassis ground
HDSL4 Loop 2 Ring (facility)
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
- 48 volt DC A
HDSL4 Loop 1 Ring (facility)
HDSL4 Loop 1 Tip (facility)
HDSL4 Loop 2 Tip (facility)
SCU Control Lead
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
- 48 volt DC B