ADC H4TU-C-319, HDSL4 User Manual

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HDSL4

USER MANUAL

H4TU-C-319 List 1 Line Unit

Product Catalog: H4TU-C-319-L1 CLEI: VACJNUNE

LTPH-UM-1031-03, Issue 3

Revision History of This Manual

To order copies of this document, use document number LTPH-UM-1031-03.

Issue Release Date Revisions Made

1 April 30, 2001 Initial release.

2 March 15, 2002 Include BERT and doublers. Updated pulse attenuation section.

3 September 12, 2003 Added “Maximum Loop Attenuation” to Appendix A - Specifications.

Trademark Information

ADC is a registered trademark of ADC Telecommunications, Inc. HiGain is a registered trademark of ADC DSL Systems, Inc. No right, license, or interest to such trademarks is granted

hereunder, and you agree that no such right, license, or interest shall be asserted by you with respect to such trademark. Other product names mentioned in this practice are used for identification purposes only and may be trademarks or registered trademarks of their respective companies.

Disclaimer of Liability

Information contained in this document is company private to ADC DSL Systems, Inc., and shall not be modified, used, copied, reproduced or disclosed in whole or in part without the written consent of ADC.

Contents herein are current as of the date of publication. ADC reserves the right to change the contents without prior notice. In no event shall ADC be liable for any damages resulting from loss of data, loss of use, or loss of profits, and ADC further disclaims any and all liability for indirect, incidental, special, consequential or other similar damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period.

ii September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Using This Manual

USING THIS MANUAL

The following conventions are used in this manual:

• Monospace type indicates screen text.

• Keys you press are indicated by small icons such as or . Key combinations to be pressed

simultaneously are indicated with a plus sign as follows: + .

Y ENTER

CTRL ESC

• Items you select are in bold.

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

Notes contain information about special circumstances.

Cautions indicate the possibility of personal injury or equipment damage.

The Electrostatic Discharge (ESD) symbol indicates that a device or assembly is susceptible to damage from electrostatic discharge.

For a list of abbreviations used in this document, refer to “Appendix E - Abbreviations” on page 67.

INSPECTING SHIPMENT

Upon receipt of the equipment:

• Unpack each container and inspect the contents for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to ADC DSL Syst ems, Inc. Order replacement equipment, if necessary.

• Check the packing list to ensure complete and accurate shipment of each listed item. If the shipment is short or irregular, contact ADC DSL Systems, Inc. as described in “Appendix D - Product Support” on page 66. If you must store the equipment for a prolonged period, store the equipment in its original container.

H4TU-C-319 List 1 September 12, 2003 iii

Inspecting Shipment LTPH-UM-1031-03, Issue 3

iv September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Table of Contents

TABLE OF CONTENTS

Overview ____________________________________________________________________________ 1

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

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

Front Panel ___________________ _________________________________________ ______________ 3 Installation___________________________________________________________________________ 8

Verification ........................................................................................................................................9

Verification without a Downstream Device ........................................................................9

Verification with a Downstream Device ......................................................... ....................9

Provisioning_________________________________________________________________________ 10

Using the MODE and SEL Pushbuttons..........................................................................................10

Setting Options through MODE and SEL.........................................................................10

Resetting to Factory Default..............................................................................................11

Displaying System Parameter Settings..............................................................................11

Disabling an Alarm......................................................... ...................................................11

Loopback Modes ...............................................................................................................11

Using a Maintenance Terminal........................................................................................................12

Connecting to a Maintenance Terminal.............................................................................12

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

Provisioning Tasks...........................................................................................................................15

Setting Date and Time.......................................................................................................15

Setting Circuit ID Numbers...............................................................................................16

Configuring the System.....................................................................................................17

Clearing the History, Alarm, and Event Log Screens .......................................................24

Monitoring System Activity and Performance ____________________________________________ 25

System Overview.............................................................................................................................25

Using the Monitor Screen to View System Activity........................................................................25

Using the Performance Screens to View Performance Data............................................................28

Performance History at the DS1 Interface.........................................................................28

Performance History at the HDSL4 Interface ...................................................................32

Using the Performance Screens to View Alarm Data......................................................................35

Alarm History at the DS1 Interface...................................................................................35

Alarm History at the HDSL4 Interface..............................................................................37

Using the Event Log to Track System Events .................................................................................38

Using the Report Menu....................................................................................................................40

Testing _____________________________________________________________________________ 42

H4TU-C-319 List 1 September 12, 2003 v

Table of Contents LTPH-UM-1031-03, Issue 3

System Alarms.................................................................................................................................42

Alarm Option for DLC Feed............................................................................................. 44

Retiring System Alarms....................................................................................................44

Remote LOS and AIS Response.......................................................................................45

OCT55 Test Pattern with AMI Line Code...................................................................................... 45

Loopback Operation........................................................................................................................ 46

Generic Loopback Commands.......................................................................................... 47

Special Loopback Commands........................................................................................... 47

Manual Loopback Session........................................... ..................................................... 48

Loopback Test Procedures .............................................................................................................. 49

General Troubleshooting Tips .......................................................................................... 49

GNLB Test Procedures..................................................................................................... 51

A3LB Test Procedure........................................................................................................52

A5LB Test Procedure........................................................................................................53

Testing with H4TU-C BERT Generator..........................................................................................56

Testing with H4TU-R BERT Generator..........................................................................................57

Appendix A - Specifications______________________________________________________ ______ 58

Power Consumption ........................................................................................................................60

Maximum Power Dissipation.......................................................................................................... 60

Maximum Current Drain................................................................................................................. 61

Loop Attenuation, Insertion Loss, and Reach ................................................................................. 61

H4TU-C-319 Card-Edge Connector................................................................................................ 62

Network Management Control Bus ............................................................ ...................... 62

Fuse Alarm............................................... ......................................................................... 62

System Alarm Output Pin................................................................................................. 63

Craft Port.........................................................................................................................................63

Appendix B - Functional Operation ______ _______________________________________________ 64

Timing ............................................................................................................................................. 64

Ground Fault Detection................................................................................................................... 64

Spectrum Issues............................................................................................................................... 64

Appendix C - Compatibility____________________________________________________________ 65 Appendix D - Product Support _________________________________________________________ 66 Appendix E - Abbreviations____________________________________________________________ 67 Certification and Warranty____________________________________________________________ 70

vi September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 List of Figures

LIST OF FIGURES

1. H4TU-C-319 List 1 Front Panel......................................................................................................................3

2. Installing the H4TU-C-319 List 1 into a Shelf................................................................................................8

3. Logon Screen.................................................................................................................................................13

4. Config Menu - Date and Time.......................................................................................................................15

5. Inventory Screen............................................................................................................................................16

6. Config Menu..................................................................................................................................................17

7. Config Menu - Standard Options (defaults shown).......................................................................................18

8. Config Menu - ADC Options (defaults shown) ............................................................................................18

9. Config Menu - Set Factory Defaults .............................................................................................................23

10. Config Menu - Master Clear..........................................................................................................................24

11. System Spans.................................................................................................................................................25

12. Monitor Screen - Active Loopback with Alarms..........................................................................................26

13. H4TU-R DS1 31-Day Performance History ................................................... ..............................................28

14. H4TU-C DS1 25-Hour Performance History................................................................................................29

15. H4TU-C DS1 48-Hour Performance History................................................................................................29

16. H4TU-R DS1 Current Statistics................................................................. ...................................................30

17. H4TU-C DS1 Current Statistics................................................................. ...................................................30

18. H4TU-C HDSL (Loop 1/Loop 2) 31-Day Performance History ..................................................................32

19. H4TU-C HDSL (Loop 1/Loop 2) 48-Hour Performance History.................................................................32

20. H4TU-C HDSL (Loop 1/Loop 2) 25-Hour Performance History.................................................................33

21. H4TU-C HDSL (Loop 1/Loop 2) Current Statistics.....................................................................................33

22. H4TU-C DS1 Alarm History Screen.............................................................................................................35

23. H4TU-R DS1 Alarm History Screen.............................................................................................................36

24. H4TU-C HDSL Alarm History Screen.........................................................................................................37

25. System Event Log..........................................................................................................................................38

26. Report Menu - Full Report............................................................................................................................40

27. H4TU-R LOS and AIS Response Priorities.................................................................................................. 45

28. Loopback Summary....................................................................................................................................... 46

29. Loopback Modes...........................................................................................................................................50

30. H4TU-C BERT Generator Screen.................................................................................................................56

31. H4TU-R BERT Generator Screen.................................................................................................................57

32. H4TU-C-319 Card-Edge Connector..............................................................................................................62

33. RS-232 Craft Port Pinouts................................................... ..........................................................................63

34. H4TU-C-319 List 1 Block Diagram..............................................................................................................64

H4TU-C-319 List 1 September 12, 2003 vii

List of Tables LTPH-UM-1031-03, Issue 3

LIST OF TABLES

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

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

3. Navigational Keys for the Maintenance Terminal Screens .......................................................................... 12

4. Logon Screen Menus.................................................................................................................................... 13

5. H4TU-C-319 List 1 Standard Config Menu Options ................................................................................... 19

6. H4TU-C-319 List 1 ADC Config Menu Options......................................................................................... 20

7. DS1/DSX-1 24-Hour PM Threshold............................................................................................................22

8. Monitor Screen Descriptions........................................................................................................................ 26

9. Acronyms Used on the DS1 Performance History Screens..........................................................................31

10. Acronyms Used on the HDSL4 Performance History Screens .................................................................... 34

11. DS1 Alarm Descriptions............................................................................................................................... 36

12. HDSL4 Alarm Descriptions............................................................... ................................... ........................ 37

13. Event Log Entry Messages List.................................................................................................................... 39

14. Report Types............................................................... ..................................................................................41

15. Front-Panel System Alarms.......................................................................................................................... 42

16. Summary of HDSL4 Loopback and Activation Codes ................................................................................ 51

17. A3LB Addressable Repeater Loopback Commands.................................................................................... 52

18. A5LB Addressable Repeater Loopback Commands.................................................................................... 53

19. BERT Signal Generator Option Settings...................................................... ................................................ 56

20. H4TU-C Power Parameters........................................................................ .................................................. 60

21. HDSL4 Reach Chart.....................................................................................................................................61

viii September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Overview

OVERVIEW

The H4TU-C-319 List 1 is the Central Office (CO) side of a T1 transmission system. The ADC® four-wire HDSL2 product family (hereafter referred to as “HDSL4”) is based on the HDSL4 standard ANSI T1.418 Issue 2.

The H4TU-C, when used with an H4TU-R remote unit, transmits a 1.544 Mbps payload up to a maximum distance of 12 kft. over two unconditioned copper pairs. Using two doublers (H4Ds), the Carrier Service Area (CSA) reach can be extended to a maximum of 34 kft. The H4TU-C-319 List 1 is designed to mount in 3192 mechanics shelves. For a list of compatible shelves see “Appendix C - Compatibility” on page 65.

The H4TU-C-319 List 1 complies with the protection switching features of the PSC-606 List 1 protection switching card. See the PSC-606 List 1 technical practice, document number LTPH-TP-1006-xx for detailed information.

FEATURES

Standard features include:

• HDSL4 transmission features — Lightning and power cross-protection on HDSL4 interfaces — Full-duplex HDSL4 transmission on four wire at 1.568 Mbps — Ultra-low wander (Stratum 1 compliant) — Grounded loop detection on either HDSL4 spans — Spectrum compatibility with Asymmetric Digital Subscrib er Line (ADSL) services — Bit Error Rate Tester (BERT) — Three-span range with two doublers (34 kft, 26 AWG)

• Front-panel provisioning features — Four-character status display — DS1 splitting and bridging access — Status Light Emitting Diode (LED) — RS-232 craft port for connection to a maintenance terminal — MODE and SEL pushbuttons — Front-panel dual loopback commands

• Maintenance screens for inventory, provisioning, and troubleshooting — DS1 and HDSL4 performance monitoring — DS1 and HDSL4 alarm histories — Payload (PL) and HDSL Generic (HG) loopback source identification — Margin Alarm (MAL) threshold — Report menu option for downloading status and performance monitoring data to a file — Sources sealing current when connected to any locally powered H4TU-R-402 — Remote access and control of H4TU-R test signal generator

H4TU-C-319 List 1 September 12, 2003 1

Overview LTPH-UM-1031-03, Issue 3

• Both doubler and non-doubler applications are compatible with ADSL services in same binder group

• Configuration options — Selectable DSX-1 pre-equalizer — Bipolar Violation Transparency (BPVT) — Bit Error Rate (BER) alarm — Power Back Off Network (PBON) and Power Back Off Customer (PBOC) options for configuring

HDSL4 transmit power levels

— Loss of Signal/Alarm Indication Signal (LOS/AIS) payload alarm — Remote provisioning — Concurrent detection of all loopback activation codes

• Additional Loopback Timeout (LBTO) settings of 8 hours and 24 hours

• Network Management and Administration (NMA) interface

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

APPLICATIONS

HDSL4 systems provide a cost-effective, easy-to-deploy method for delivering T1 High Capacity Digital Service (HCDS) over two pair of wires. HDSL4 systems support a multitude of network connections.

• The service is deployed over two unconditioned, non-loaded copper pair at 784 kps per loop.

• Conventional, inline DS1 repeaters are no longer required.

• Cable pair conditioning, pair separation, and bridged tap removal are not required.

For Span 1, each loop has no more than 47 dB of insertion loss (INSL) at 196 kHz, with driving and terminating impedances of 135Ω; for Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz. In general, HDSL4 systems:

• Operate effectively in the same cable binder group with other HDSL4 lines, HDSL, T1, ADSL, SDSL, POTS, Digital Data Service (DDS), and other transmission schemes.

• Can be used with customers requiring DS1 service on a temporary or permanent basis.

• Provide a means of quickly deploying service in advance of fiber-optic transmission systems.

2 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Front Panel

FRONT PANEL

Figure 1 shows the H4TU-C-319 List 1 front panel. Table 1 on page 4 describes the front-panel components. For

a list of front-panel display messages, refer to Table 2 on page 5. For pinout diagrams of the H4TU-C card-edge connector and craft port, refer to Figure 32 on page 62 and Figure 33 on page 63 , respectively.

List number

Status LED

Card handle

(CLEI and ECI bar code

label on outside of handle)

4 T U

C 3

SETUP M O D E

O U T

B R G

I N E

B R G

I N E

STATUS

S E L

Front-panel display

MODE and SEL pushbuttons

DSX-1 access jacks

R S 2 3 2

DCE

Craft port

Figure 1. H4TU-C-319 List 1 Front Panel

H4TU-C-319 List 1 September 12, 2003 3

Front Panel LTPH-UM-1031-03, Issue 3

Table 1. Front-Panel Description

Front-Panel Feature Function

Front-panel display Displays four-character status, provisioning, and alarm system messages. The front-panel display

illuminates when power is initially applied. To conserve power the display only remains on for 5 minutes. Using the MODE or SEL pushbuttons reactivates the display and restarts the 5-minute timer. Refer to Table 2 on page 5 for a listing of the four-character messages.

List number Identifies the list number of the H4TU-C-319.

MODE and SEL pushbuttons Permits user options to be monitored and modified without the need of a maintenance terminal.

Used to initiate all HDSL4 loopbacks and to display DSX-1 line parameters and line unit identity.

Status LED The status LED can report the following conditions:

Off Line power is off.

Green Normal operation.

Red Fuse alarm.

Flashing red HDSL4 acquisition or system alarm.

Yellow An H4TU-C-319 Customer Remote Loopback (CREM) or a Network Local Loopback (NLOC) is in

effect.

Flashing yellow H4TU-C-319 is in an Armed (ARM) state.

Card handle Provides the human-readable Common Language Equipment Identifier (CLEI) code number and

the Equipment Catalog Item (ECI) bar code number.

DSX-1 access jacks

BRG Provides non-intrusive bridging jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1

interface. Allows the two DS1 payloads to be monitored.

LINE Provides splitting jack access to (IN) and from (OUT) the HDSL4 span at the DSX-1 interface.

Breaks the IN and OUT paths to permit test signal insertion and retrieval.

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

configuration and performance monitoring through the maintenance terminal screens.

4 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Front Panel

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

or diagnostic message and, in some cases, is followed by a second four-character message that modifies the first message with a value or current configuration setting.

Table 2. Front-Panel Display Messages

Message Full Name Description

ALARM MESSAGES

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

condition by pressing the SEL pushbutton on the H4TU-C front panel. ALRM Alarm Condition Exists A system alarm condition is in effect. DBER DS1 Bit Error Rate A system DS1 BER alarm is in effect and remains in effect until cleared. DU1U or DU1D Doubler 1 Upstream or Downstream

Port

DU2U or DU2D Doubler 2 Upstream or Downstream

Port

HBRx HDSL4 Block Error Rate Loop 1 or

Loop 2

LAx Loop Attenuation Loop 1 or Loop 2 The attenuation on the HDSL4 loop has exceeded the maximum

LAIS Line Alarm Indication Signal Indicates an AIS (unframed all ones) pattern is being received or

LLOS Line (Unit) Loss of Signal Indicates that no signal is detected at the DSX-1 input to the H4TU-C.

LOF Loss of Frame The DS1 input does not contain the ESF or SF frame pattern setting of

LOSW Loss of Sync Word Indicates that one of the HDSL4 loops has lost synchronization. LRAI Line RAI Indicates an RAI alarm (yellow) from the CPE with an error-free signal

MALx Margin Alarm Loop 1 or Loop 2 The margin at Loop 1 or Loop 2 of the HDSL4 interface has dropped

PWR FEED GND Power Feed Ground The HDSL4 loop is grounded. PWR FEED OPEN Power Feed Open Indicates a line power open condition. PWR FEED SHRT Power Feed Short Indicates a short between Loop 1 and Loop 2 of the HDSL4 pair. PRMF Performance Report Messaging -

Far End

PRMN Performance Report Messaging -

Near End

RAIS Remote Alarm Indication Signal Indicates an AIS (unframed all ones) pattern is being received or

RLOS Remote (Unit) Loss of Signal Indicates that no signal is detected at the DS1 input to the H4TU-R.

RRAI Remote RAI—Remote Alarm

Indication at the H4TU-R (Net signal has errors.)

SPNn Span Number Accompanies the LOSW alarm and identifies the span where the LOSW

TUC Transmission Unit Central Office Precedes DBER, HBR, MAL, LA, and LOF alarms and indicates that the

TUR Transmission Unit Remote End Precedes DBER, HBR, MAL, LA, and LOF alarms and indicates that the

Precedes LA, HBR, and MAL and indicates the first H4D doubler HDSL4

upstream or downstream interface.

Precedes LA, HBR, and MAL and indicates the second H4D doubler

HDSL4 upstream or downstream interface.

A system HDSL4 Block Error Rate alarm is in effect. (x indicates

Loop 1 or Loop 2.)

threshold value. (x indicates Loop 1 or Loop 2.)

transmitted at the H4TU-C DS1 input or output ports.

Causes a system alarm.

the FRMG option.

from the line unit or network. RAI signal is transmitted towards the

network.

below the threshold (0 to 15 dB) set by the operator. (x indicates

Loop 1 or Loop 2.)

H4TU-R PRM-FE BER threshold has been exceeded at far end.

H4TU-R PRM-NE BER threshold has been exceeded at near end.

transmitted at the H4TU-R DS1 input or output ports.

Causes a system alarm.

Indicates an RAI alarm (yellow) from the CPE with errors from the line

unit or network. RAI-CI signal is transmitted towards the network.

alarm occurred.

alarm has occurred at the H4TU-C Central Office unit.

alarm has occurred at the H4TU-R remote unit.

Continued

H4TU-C-319 List 1 September 12, 2003 5

Front Panel LTPH-UM-1031-03, Issue 3

Table 2. Front-Panel Display Messages (Continued)

Message Full Name Description

LOOPBACK MESSAGES

CDU1 Customer Doubler 1 Loopback DS1 signal from customer is looped back to the customer at H4D1

CDU2 Customer Doubler 2 Loopback DS1 signal from customer is looped back to the customer at H4D2

CLOC Customer Local Loopback DS1 signal from customer is looped back to the customer at the H4TU-R. COLB Central Office Loopback Dual loopback at the H4TU-C. CREM Customer Remote Loopback DS1 signal from customer is looped back to the customer at the

NDU1 Network Doubler 1 Loopback Signal is looped back to the network at H4D1 (110000). NDU2 Network Doubler 2 Loopback Signal is looped back to the network at H4D2 (111000). NLOC Network Local Loopback DSX-1 signal is looped back to the network at the H4TU-C. NREM Network Remote Loopback DSX-1 signal is looped back to the network at the H4TU-R. RULB Remote Unit Loopback Dual loopback at the H4TU-R. SMJK Remote SmartJack Loopback DSX-1 signal is looped back to the network at the H4TU-R SmartJack

(111100).

(111110).

H4TU-C.

module.

DIAGNOSTIC MESSAGES

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

highest loop attenuation of all HDSL interfaces.

ACQ1 or ACQ2 Acquisition 1 or Acquisition 2 The multiplexers of the H4TU-C and H4TU-R are trying to establish

synchronization over HDSL4 Loop 1 or Loop 2. ARM System Armed Armed to respond to Intelligent Repeater Loop (ILR) codes. BAD RT? No Response from H4TU-R The H4TU-C receives no response from the H4TU-R, and all HDSL4

loop conditions are normal; therefore, the integrity of the H4TU-R or

the HDSL4 loops is questionable. FERR Framing Bit Error Occurred Framing bit error occurred at H4TU-C DSX-1 input. HxES HDSL4 CRC Error Loop 1 or Loop 2 H4TU-C HDSL4 Loop 1 or Loop 2 Cyclical Redundancy Check (CRC)

error. (Loop 1 has display priority over Loop 2.) LBPV Local Bipolar Violation A bipolar violation has been received at the DSX-1 input to the

H4TU-C-319. 1=xx or 2=xx HDSL4 Loop Margin Indicates the power of the received HDSL4 signal on each loop relative

to noise (S/N with respect to 21.5 dB). Any value of 6 dB or greater is

adequate for reliable system operation. (xx denotes lowest margin in

dB for Loop 1 and Loop 2.) MNGD Managed The H4TU-C-319 is under control of the HMU-319 network

management unit. In this state, the front-panel craft port and

pushbuttons are disabled. PWR FEED OFF Power Feed Off HDSL4 span power has been turned off by setting the PWRF option to

OFF, or HDSL4 span power has been turned off by use of the A5LB

Intelligent Office Repeater (IOR) powerdown code. PWR FEED ON Power Feed On Indicates that the HDSL4 loop power is applied and neither pair is

grounded. SIG1 or SIG2 Signaling The transceivers of the H4TU-C and H4TU-R are trying to establish

contact with each other over HDSL4 on Loop 1 or Loop 2.

SYSTEM INFORMATION MESSAGES

(a)

VER x.xx Software Version Number The software version number of the H4TU-C-319. LIST xx List Number The list number of the H4TU-C-319.

Continued

6 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Front Panel

Table 2. Front-Panel Display Messages (Continued)

Message Full Name Description

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

SuperFrame (SF), Extended SuperFrame (ESF), or Unframed (UNFR).

CODE xxxx Line Code: AMI, B8ZS The line code that the H4TU-C is receiving at its DSX-1 interface, if the

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

Substitution (B8ZS). LATT xx Loop Attenuation The current loop attenuation threshold setting measured in dB. MARG xx Margin The current margin threshold setting measured in dB.

(a) System information messages scroll in the order listed. To scroll through the messages, press the MODE pushbutton for 3 or

more seconds. After system information messages scroll, the front panel displays the line card options (see Table 5 on

page 19 and Table 6 on page 20).

H4TU-C-319 List 1 September 12, 2003 7

Installation LTPH-UM-1031-03, Issue 3

INSTALLATION

Upon receipt of the equipment, inspect the contents for signs of damage. If the equipment has been damaged in transit, immediately report the extent of damage to the transportation company and to ADC.

H4TU-C-319

CO shelf

Figure 2. Installing the H4TU-C-319 List 1 into a Shelf

When installing an H4TU-C in a chassis, be sure to wear an antistatic wrist strap. Avoid touching components on the circuit board.

To comply with the intrabuilding wiring requirements of GR-1089 CORE, Section 4.5.9, the shields of the ABAM-type cables that connect the H4TU-C DSX-1 output ports to the cross-connect panel must be grounded at both ends.

1 Align the H4TU-C with the enclosure slot guides, then push the unit in until it touches the backplane

card-edge connector.

2 Place your thumbs on the front panel and push the H4TU-C into the slot guides until properly seated.

8 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Installation

VERIFICATION

Once the H4TU-C is installed, verify that it is operating properly. To do this, monitor the following:

• Status LED

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

Verification without a Downstream Device

If there is no downstream device installed: 1 Verify that the H4TU -C powers up. The front-panel display illuminates and reports status messages. (See

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

2 Verify that the H4TU-C attempts to communicate with downstream devices (status LED flashes red). Even

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

a The front-panel display reports various four-character status messages. b The H4TU-C again attempts communication until a downstream device is detected.

Verification with a Downstream Device

If a downstream device has been installed:

1 Verify that the H4TU-C powers up. (The front-panel display illuminates and reports various status messages.) 2 Verify that the H4TU-C attempts to communicate with downstream devices (status LED flashes red). One of

the following occurs:

• If downstream devices are successfully identified and the HDSL4 loop synchronizes, the H4TU-C status LED lights steady green. The H4TU-C reports normal margin and loop attenuation messages on the front-panel display.

• If downstream devices are not successfully identified, the H4TU-C reports four-character status messages. The H4TU-C attempts communication again and reports four-character status messages. The H4TU-C repeats this cycle until a downstream device is detected.

3 If there is more than one span, verify that each subsequent span synchronizes normally by monitoring the

front-panel display messages.

4 If a remote unit is installed, verify that the last span synchronizes normally. The H4TU-C status LED should

light a steady green and the front-panel display should report normal margin messages.

5 Verify that a valid DS1 signal has been applied to the H4TU-C and the H4TU-R.

• If no DS1 signal is being applied to either the H4TU-C or the H4TU-R inputs, then the appropriate DS1 alarms (LLOS or RLOS) display on the front panel and the status LED flashes red.

• If a valid DS1 signal is being supplied to the H4TU-C and H4TU-R, then DS1 alarm indications should be absent and the status LED should be steady green.

H4TU-C-319 List 1 September 12, 2003 9

Provisioning LTPH-UM-1031-03, Issue 3

PROVISIONING

There are two methods for provisioning:

• Use the MODE and SEL pushbuttons on the front panel of the H4TU-C to: — Set system options — Reset the H4TU-C to its factory default settings for system options — Display system option settings (scroll mode) — Select system loopbacks

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

H4TU-C craft port (or to an HMU craft port) to access the maintenance screens (Figure 3 on page 13). This gives you full access to all H4TU-C status, history, inventory, and provisioning screens.

The MNGD message displays if the H4TU-C-319 is under HMU management. When this occurs, the front-panel pushbuttons and craft port are disabled.

No dip switches or jumpers are required to provision the H4TU-C-319 as it contains a non-volatile RAM (NVRAM) which stores the system option settings. System option settings are retained if shelf power is lost or the H4TU-C-319 is unplugged.

USING THE MODE AND SEL PUSHBUTTONS

Setting Options through MODE and SEL

To provision the H4TU-C-319 through the MODE and SEL pushbuttons on the front panel: 1 Press the MODE pushbutton for 1 second and then release it. The front-panel display alternately shows the

first system parameter and its current setting.

2 Press the SEL pushbutton to step through all possible settings of the selected parameter. (See Table 5 on

page 19 and Table 6 on page 20.)

3 After the desired setting has been sel ected, press the MODE pushbutton. This updates the current displayed

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

4 Do one of the following :

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

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

• To accept the requested parameter changes, press the SEL pushbutton. (A CONF YES message appears,

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

10 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Provisioning

Resetting to Factory Default

All user options for the H4TU-C-319 List 1 (Table 5 on page 19) can be set to the factory default values using the MODE and SEL pushbuttons. To set the user options to their default values:

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

DFLT NO

2 Press the SEL pushbutton while the DFLT NO message is displayed.

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

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

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

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

Displaying System Parameter Settings

To scroll through the current settings of all system parameters, press the MODE pushbutton for 3 or more seconds. The H4TU-C-319 displays the following parameters:

• Software version number

• List number

• Type of frame pattern received from the DSX-1

• Line code of the signal received from the DSX-1

• All user-configured parameter settings

• Loop attenuation threshold setting

• Margin alarm threshold setting

Disabling an Alarm

System alarms can be disabled by pressing the SEL pushbutton on the H4TU-C-319 front panel for less than 3 seconds. This executes an ACO and returns the H4TU-C-319 to its non-alarm state. For more information about alarms, see “System Alarms” on page 42.

Loopback Modes

See “Loopback Operation” on page 46 for instructions on using the MODE and SEL pushbuttons to activate loopbacks.

H4TU-C-319 List 1 September 12, 2003 11

Provisioning LTPH-UM-1031-03, Issue 3

USING A MAINTENANCE TERMINAL

Connecting to a Maintenance Terminal

The craft port on the front panel allows you to connect the H4TU-C-319 to a maintenance term inal (ASCII terminal or PC running a terminal emulation program). Once connected to a maintenance terminal, you can access the maintenance, provisioning, and performance screens.

To connect to a maintenance terminal: 1 Connect a standard 9-pin term inal cable to the RS-232 craft port (Figure 1 on page 3) on the

H4TU-C-319 List 1 front panel.

2 Connect the other end of the cable to the serial port on the maintenance terminal. 3 Start a terminal emul ation program such as Procomm (emulating a VT100 terminal). 4 Configure the ma int e nance terminal to the following communication settings:

• 9600 baud

• No parity

• 8 data bits

• 1 stop bit

• Hardware flow control to OFF

5 If necessary, press + to refresh the HDSL4 logon screen.

CTRL R

Logon Screen

The maintenance terminal screens allow you to monitor, provision, and troubleshoot an HDSL4 system. To select a menu from the logon screen (Figure 3 on page 13), do one of the following:

• Press the underlined letter of the menu.

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

Table 3 summarizes the navigational keys. They are also listed in the onscreen Help menu. Table 4 on page 13

describes the Logon screen menus.

(a)

Key

SPACEBAR

ENTER

or (VT100 only) Return to the parent menu.

ESC F11

or + Select the submenu or item above the current one, or return to the previous menu.

CTRL E

↑

or + Select the submenu or item below the current one.

CTRL X

↓

→

or + Select the menu or item to the right of the current one.

CTRL D

←

or + Select the menu or item to the left of the current one, or return to the previous menu.

CTRL S

+ Refresh the screen.

CTRL R

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

← →

ENTER

Table 3. Navigational Keys for the Maintenance Terminal Screens

Function

Cycle through selections.

Activate the current setting or choice, or display a menu.

12 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Provisioning

Most VT100 emulation programs support a print screen option. For Windows-based programs, such as Procomm or HyperTerminal, refer to the Help menu for instructions.

Menu bar

Monitor Performance Event Log C onfig Inventory Report Rlogon Help

+------------------------------------------+ | | | ADC DSL Systems, Inc. | | HDSL4 | | | | Voice: 800.638.0031 | | Fax : 714.730.2400 | +------------------------------------------+

ID: xxxx--xxxx--xxxx—-xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Circuit ID Date and Time Logon Device System Status

Figure 3. Logon Screen

Table 4. Logon Screen Menus

Press this key: To access this menu: Menu Functions

Monitor Monitors loopbacks and alarms, and provides a graphical representation

of circuit activity, including ES, UAS, SES, and line code.

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

or 31-day periods for either the DS1 or HDSL4 interface.

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

time of occurrence.

Config Provides standard configuration options, ADC options, BER tester

(BERT), date and time setting, and a reset option (factory settings). Also provides a master clear option that clears all performance, alarm, and event log entries. Selecting the Config menu after a remote logon displays the BERT Generator menu, which provides access to the BERT Signal Generator configuration submenu.

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

system and lists circuit and device identifications.

Report Provides four types of reports: Full Report, Short Report, System

Information Report, and Event Report.

Continued

H4TU-C-319 List 1 September 12, 2003 13

Provisioning LTPH-UM-1031-03, Issue 3

Table 4. Logon Screen Menus (Continued)

Press this key: To access this menu: Menu Functions

Rlogon / Rlogout Remote logon can be performed from the H4TU-C or the H4TU-R. The

screen displays “R

logout” when the H4TU-C or H4TU-R is remotely

logged on to the other unit at the end of the circuit. Remote logon from the H4TU-C will permit viewing of the H4TU-R BERT

Generator configuration submenu. To log off the remote unit, press . “R

unit is now locally logged on until is pressed again to reinitiate a

logout” changes to “Rlogon.” The

remote logon.

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

navigational keys, print guide, and ADC contact information.

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LTPH-UM-1031-03, Issue 3 Provisioning

PROVISIONING TASKS

After the H4TU-C-319 is successfully installed, perform these basic provisioning tasks:

1 Set the date and time (see “Setting Date and Time” on this page). 2 Set the circuit ID numbers (see “Setting Circuit ID Numbers” on page 16). 3 Make any desired changes to configuration (see “Configuring the System” on page 17). 4 Clear history, alarm, and event log screens to remove miscellaneous data during startup (see “Clearing the

History, Alarm, and Event Log Screens” on page 24).

Setting Date and Time

Standard Options -> |

Date and Time -> |

02/01/2002|

ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 4. Config Menu - Date and Time

1 Press to select the Config menu. 2 Use the and arrow keys to select Date and Time, then press . 3 Type the date in the format indicated, then press . 4 Type the time in the format indicated (entering seconds is optional), then press .

↑ ↓

ENTER

H4TU-C-319 List 1 September 12, 2003 15

Provisioning LTPH-UM-1031-03, Issue 3

Setting Circuit ID Numbers

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

onitor Performance Event Log C onfig Inventory Report Rlogon Help

-------------------------- Product Information ---------------------------Unit : H4TU-C H4TU-R H4DU-1 H4DU-2 Product : H4TU-C-319 H4TU-R-402 H4D-409 H4D-409 List : 1 1 1 1 Sw Ver : 4.00 4.00 4.00 4.00 Build # : 08 08 08 08 Checksum : 0xA015 0xA015 0x633C 0x633C H4 Xcvr : GSPN B165 GSPN B165 GSPN B165 GSPN B165 Serial # : 215689543 215610839 123456789012 123456789012 CLEI : VACJNUNEAA VAR1EADAAA ABCDEFGHIJ 1234567890 Mfg. Date: 9/12/01 7/27/01 11/21/2001 11/20/2001

-------------------- Circuit and Unit Identifications ---------------------

Circuit ID : H4TU-R ID : yyyy—-yyyy—-yyyy—-yyyy Circuit Notes:

ID: xxxx--xxxx—-xxxx—-xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

xxxx—-xxxx—-xxxx—-xxxx

Figure 5. Inventory Screen

1 Press to select the Inventory screen. 2 Type the Circuit ID number, then press . (The Circuit ID number may consist of up to 24 alphanumeric

ENTER

characters.)

3 Type the ID numbers of all other devices listed in the system, pressing after each entry. 4 Type any relevant circuit notes, and then press .

ENTER

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LTPH-UM-1031-03, Issue 3 Provisioning

Configuring the System

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

• Standard options (Figure 7 on page 18)

• ADC options (Figure 8 on page 18)

• BERT Generator (Figure 30 on page 56)

• Date and time (see “Setting Date and Time” on page 15)

• Master clear (see “Clearing the History, Alarm, and Event Log Screens” on page 24)

• Reset to factory default configuration (Figure 9 on page 23)

Standard Options -> |

ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 6. Config Menu

Making Changes to Standard and ADC Options

Figure 7 and Figure 8 on page 18 show the Standard and ADC configuration options. Standard options are

supported by HDSL4 units when connected to units from other vendors. ADC options are an extended set of options available only when using ADC units exclusively. For a description of each option and a list of possible option settings, refer to Table 5 on page 19 and Table 6 on page 20. To make changes to these options:

1 Press to select the Config menu. 2 Use the and arrow keys to select Standard Options or ADC Options, then press . 3 Use the arrow keys to select an option. 4 Press the to cycle through the available settings for that option. 5 Press to activate your choice.

↑ ↓

SPACEBAR

ENTER

The message May need to change MUX option after changing this option appears when changing the DS1 Line Coding (DS1) or H4TU-C Equalization (EQL) option in the Standard Options configuration screen. (This applies when the H4TU-C is used in a Wideband 3190 which contains a multiplexer.)

H4TU-C-319 List 1 September 12, 2003 17

Provisioning LTPH-UM-1031-03, Issue 3

Use <Spacebar> to cycle through option settings and <Enter> to activate ID: xxxx—-xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Standard Options -> |

AUTO |

Figure 7. Config Menu - Standard Options (defaults shown)

onitor Performance Event Log C onfig Inventory Report Rlogon Help +----------------------+

Use <Spacebar> to cycle through option settings and <Enter> to activate ID: xxxx—-xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

| Standard Options -> |

ADC Options -> |

AUTO |

Figure 8. Config Menu - ADC Options (defaults shown)

18 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Provisioning

Table 5 describes the Standard Config menu options and lists their menu screen display codes. Table 6 on page 20

describes the ADC Config menu options. Selections in bold type are the factory default settings.

Table 5. H4TU-C-319 List 1 Standard Config Menu Options

Standard Config Menu Options

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

Loop Attenuation Threshold

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

DS1 Frame Formatting

DS1 Line Coding See “DS1 Line

Coding (DS1) Option” on page 21.

H4TU-C Equalization EQL 0 ft Sets the Equalizer to DSX-1 for 0 to 132 feet.

See “H4TU-C

Equalization (EQL) Option.” on page 21.

H4TU-R Line Buildout

Alarm Pattern See “Alarm Pattern

(ALMP) Option.” on page 22.

Screen Display Code

LATT 0 through

FRMG AUTO Configures the HDSL4 system to operate in an auto-framing (AUTO) mode. It

DS1 AUTO The H4TU-C and H4TU-R monitor the incoming DS1 bit streams for the B8ZS

RLBO Sets the DS1 receive level output toward the Customer Interface (CI). Line

ALMP AIS Enables the HDSL4 system to output an AIS payload at its DS1 ports for

Selection Description

20 min Sets automatic cancellation of all loopbacks to 20 minutes after initiation.

60 min Sets automatic cancellation of all loopbacks to 60 minutes after initiation.

120 min Sets automatic cancellation of all loopbacks to 120 minutes after initiation.

8 hr Sets automatic cancellation of all loopbacks to 8 hours after initiation.

24 hr Sets automatic cancellation of all loopbacks to 24 hours after initiation.

Determines the maximum loop attenuation before an alarm is declared. Zero

50 dB

38 dB Default value.

4 dB Default value.

SF Configures the HDSL4 system to search for the SF framing pattern at its DS1

ESF Configures the HDSL4 system to search for the ESF framing pattern at its DS1

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

B8ZS Places both the H4TU-C and H4TU-R into their B8ZS modes.

AMI Places both the H4TU-C and H4TU-R into their AMI modes.

133 ft Sets the Equalizer to DSX-1 for 133 to 265 feet.

266 ft Sets the Equalizer to DSX-1 for 266 to 398 feet.

399 ft Sets the Equalizer to DSX-1 for 399 to 532 feet.

533 ft Sets the Equalizer to DSX-1 for 533 to 655 feet.

0 dB Sets the DS1 RLBO level toward the CI to 0 dB.

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

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

LOS Enables the HDSL4 system to output an LOS condition at its DS1 ports for

disables the alarm. The loop attenuation threshold cannot be set from the front-panel pushbuttons.

occur. Zero disables the alarm. The Margin (Alarm) threshold cannot be set from the front-panel pushbuttons.

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

input.

ES-P and SES-P counters to increment.

code. If the H4TU-R detects this code, the H4TU-C enters B8ZS output mode. The H4TU-C reverts back to AMI output mode if no B8ZS codes are received at the H4TU-R input for 5 seconds. Similarly, when the H4TU-C detects the B8ZS code, the H4TU-R enters the B8ZS mode and returns to AMI mode if no B8ZS code is received at the H4TU-C input for 5 seconds.

buildout can only be set through the maintenance screens.

LOSW and LOS DS1. For priority resolution, see Figure 27 on page 45.

LOSW and LOS DS1.

Continued

H4TU-C-319 List 1 September 12, 2003 19

Provisioning LTPH-UM-1031-03, Issue 3

Table 5. H4TU-C-319 List 1 Standard Config Menu Options (Continued)

Standard Config Menu Options

H4TU-R TLOS Loopback

Network Loopback Pattern

Power Back Off Network

See “Power Back Off

(PBON and PBOC) Options” on page 22.

Power Back Off Customer

See “Power Back Off

(PBON and PBOC) Options” on page 22.

Screen Display Code

Selection Description

TLOS ENA Enables a logic loopback at the H4TU-R when an LOS occurs at its DS1 input.

For priority resolution, see Figure 27 on page 45.

DIS Disables TLOS logic loopback.

NLBP AIS Enables the H4TU-R to transmit AIS towards the CI for any network loopback.

For priority resolution, see Figure 27 on page 45.

LOS Enables the H4TU-R to transmit LOS towards the CI for any network

loopback.

PBON DEF Configures the power output levels of the H4TU-C network unit toward the

customer to comply with the Default template as defined in Section 6.1.4.2 of ANSI T1.418.

ENH Configures the power output levels of the H4TU-C network unit toward the

customer to comply with the Enhanced template as defined in Section 6.1.4.2 of ANSI T1.418.

PBOC DEF Configures the power output levels of the H4TU-R customer unit toward the

network to comply with the Default template as defined in Section 6.1.4.2 of ANSI T1.418.

ENH Configures the power output levels of the H4TU-R customer unit toward the

network to comply with the Enhanced template as defined in Section 6.1.4.2 of ANSI T1.418.

Table 6. H4TU-C-319 List 1 ADC Config Menu Options

ADC Config Menu Options

Screen Display Code

Selection Description

Line Power Feed PWRF OFF Disables powering to the HDSL4 pair.

LOW Keeps the HDSL4 line voltage at nominal -185 Vdc.

HIGH Keeps the HDSL4 line voltage at nominal ±123 Vdc.

AUTO Keeps the H4TU-C line voltage at -185 Vdc when line powering up to two

devices (one doubler and one remote unit, or two doubler units). When line powering of more than two devices is required, the line unit automatically switches to ±123 Vdc.

Remote Provisioning RTPV ENA Enables remote provisioning.

DIS Disables remote provisioning.

Bipolar Violation Transparency

See “Bipolar

Violation

BPVT ENA Enables BPVs and HDSL4 CRC errors at the DS1 input to be converted into

DS1 BPVs at the DS1 output at the distant end. This makes HDSL4 transparent to BPVs.

DIS Disables BPV Transparency.

Transparency (BPVT) Option” on page 22.

DS1 BER Threshold See “DS1 Bit Error

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

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

Rate (DBER) Option” on page 22.

Continued

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LTPH-UM-1031-03, Issue 3 Provisioning

Table 6. H4TU-C-319 List 1 ADC Config Menu Options (Continued)

ADC Config Menu Options

HDSL4 BER Threshold

See “HDSL4 Block

Error Rate Threshold (HBER) Option” on page 21 and “System Alarm Output Pin” on page 63.

SmartJack Loopback LPBK ENA Enables the HDSL4 system to recognize all inband SmartJack (SMJK)

Minor Alarm ALM ENA Enables the generation of the output alarm on pin H when a system alarm

Remote Disconnect Alarm

Screen Display Code

HBER 1E-6 System alarm relay contact closes and the Status LED flashes red when the

RDA ENA Enables a remote DS1 LOS condition at the input to the H4TU-R to generate

Selection Description

-6

Block Error Rate (BER) exceeds 10 definition of Bit Error Rate.)

1E-7 System alarm relay contact closes and the Status LED flashes red when BER

exceeds 10

NONE Prevents generation of a system alarm due to BER.

loopback commands.

DIS Configures the HDSL4 system to ignore all inband SmartJack loopback

commands.

condition occurs.

DIS Disables the generation of the output alarm on pin H when a system alarm

condition occurs.

an LOS alarm. AIS or LOS (depending on ALMP) is sent towards the network.

DIS Prevents a remote DS1 LOS condition at the input to the H4TU-R from

causing an LOS alarm. The front-panel Status LED still flashes red and the ALRM RLOS message appears, but the alarm relay contacts do not close and LOS is sent towards the network from the H4TU-C instead of AIS.

-7

. (Block Error Rate is based on the

HDSL4 Block Error Rate Threshold (HBER) Option. The HBER option permits monitoring of loop integrity and reporting of alarms when excessive errors are detected. The performance monitoring (PM) primitive used for this purpose is the CRC checksum performed on the HDSL4 frame for both directions of transmission. It is, therefore, called a block error rate rather than the bit error rate associated with the DS1 interface. The Monitor screen displays the CRC errors and counts for both the H4TU-C and H4TU-R. The HBER option allows an alarm to be generated if the total number of CRCs at either the H4TU-C or H4TU-R exceeds the selected BER threshold during the last 1-minute interval.

• HBER option = 1E-6. Alarm is generated if CRC > 93

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

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

DS1 Line Coding (DS1) Option. The DS1 line code option should always be set to conform to the type of DS1 service (AMI or B8ZS) being provided by the system. The Auto mode, which can adapt to either AMI or B8ZS, should only be used in applications that require it (such as when ADC system acts as a standby circuit to DS1 circuits whose line codes are not known or may be both AMI and B8ZS). This is because the Auto mode induces one BPV in the DS1 bit stream whenever it switches from AMI to B8ZS. The Auto mode allows both the H4TU-C and the H4TU-R to set its DS1 output code to that which is being received at the distant end DS1 input. This forces the input and the output codes in each direction of transmission to be identical.

H4TU-C Equalization (EQL) Option. The equalizer shapes the DS1 output signal of the H4TU-C to conform to a very specific pulse template when it arrives at the DSX-1 cross-connect point. The degree of pulse-shaping required is a function of the distance between the H4TU-C’s equipment bay and the DSX-1 panel. Thus, the equalizer has six discrete settings, in increments of 133 feet to cause the maximized separation of 655 feet.

H4TU-C-319 List 1 September 12, 2003 21

Provisioning LTPH-UM-1031-03, Issue 3

Alarm Pattern (ALMP) Option. To improve HDSL4 compatibility with the switch-to-protect features used in Digital Loop Carrier (DLC) feeder applications, the H4TU-C-319 has an ALMP option that allows you to select either an AIS or LOS DS1 output payload for the following alarms:

• LOSW on any loop

• LOS DS1

Bipolar Violation Transparency (BPVT) Option. The H4TU-C-319 improves compatibility with Digital

Loop Carrier (DLC) feeder applications because of its ability to transmit DS1 BPV occurrences between its DS1 interfaces. This feature is required to support protection switching in DLC applications. Each DLC terminal must be able to monitor the integrity of its Receive DS1 payload and then switch to the protect line when the integrity of the path drops below specific user selected limits. An essential requirement of this feature is the need for each DLC terminal to detect BPVs in its DS1 input. Standard HDSL systems correct DS1 BPVs at the input and, therefore, prevent them from being detected by the DLC terminals to which they are connected. The H4TU-C-319 and its associated remote units remove this limitation and become BPV transparent by detecting and counting input BPVs at each end and then by replicating them at the DS1 output port of the distant end.

The BPV count is converted into BPVs at the distant end during the following second at a rate of 1 BPV every 128 DS1 bits up to a maximum of 12000 (BER=7.7 x 10 exceeds the maximum 10

-3

BER required by most DLC systems.

-3

). This maximum rate is more than adequate since it

DS1 Bit Error Rate (DBER) Option. The DS1 BER alarm occurs when any of the DS1 or DSX-1 performance monitoring parameters listed in Table 7 exceed the counts shown for the 24-hour period between 12:00:00 AM through 11:59:59 PM. These thresholds correspond to a 10

-6

BER. All PM counters clear to zero at

12:00:00 AM or when Master Clear is selected.

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

Parameter Threshold Count

CV-L (BPV) 133,400

CV-P (CRC) 132,960

CV-P (FE in SF) 691

ES-L, ES-P, PRM-NE, PRM-FE 648

SES-L, SES-P 100

UAS-P, UAS-L 10

Power Back Off (PBON and PBOC) Options. Power Back Off Network (PBON) and Power Back Off Customer (PBOC) allow the HDSL4 circuit to support two transmit power templates: default (DEF), higher level, and enhanced (ENH), lower level. These are defined in the four-wire section of the ANSI T1.418 Issue 2 HDSL2 standard. Each HDSL4 receiver detects the level it is receiving during the start-up, pre-activation sequence. It then compares this level to the level it should be receiving according to the PBON and PBOC option settings (DEF or ENH). If the received level is outside the template limits, the receiver sends a message to the upstream HDSL4 transmitter requesting the proper level. These levels are adjusted only during the start-up routine or if the PBON or PBOC option settings are changed during normal operation. Since the ENH template levels are up to 15 dBm below those of the DEF template, the ENH setting can be used to reduce crosstalk levels into adjacent circuits. (For example, if crosstalk noise is being induced by the H4TU-R, set the PBOC option to its lower (ENH) level setting. Conversely, if the HDSL4 signal at the H4TU-R is being affected by crosstalk noise induced from adjacent pairs, set the PBOC option to its higher (DEF) level setting.

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LTPH-UM-1031-03, Issue 3 Provisioning

Changing these Power Back Off option settings on a live circuit causes the HDSL4 loop to momentarily drop and then reacquire synchronization. This setting can also affect the operating margins.

Resetting to Factory Defaults

Resetting the H4TU-C to its original factory settings may cause interruption of service.

To reset the H4TU-C-319 to its original factory defaults:

1 Press to select the Config menu. 2 Use the and arrow keys to select Set Factory Defaults, then press . 3 Press if you are certain you want to reset the H4TU-C, or press to cancel this action.

↑ ↓

Y N

SETTING FACTORY DEFAULTS...SERVICE MAY BE INTERRUPTED! ARE YOU SURE (Y/N)?

ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Standard Options -> |

Set Factory Defaults |

ENTER

Figure 9. Config Menu - Set Factory Defaults

H4TU-C-319 List 1 September 12, 2003 23

Provisioning LTPH-UM-1031-03, Issue 3

Clearing the History, Alarm, and Event Log Screens

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

Standard Options -> |

Master Clear |

ALL

Clear

ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

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

Figure 10. Config Menu - Master Clear

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

E L

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

1 Press to select the Performance screen. 2 Press the to select either interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1

SPACEBAR

NET HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then press .

3 Press to select statistics. 4 Press the to select the type of statistics (Current, Alarm History, 25-Hour History,

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

ENTER

↓

SPACEBAR

ENTER

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

performance history screens for the selected interface.

— Selecting Alarm History allows you to clear the alarm history screen for the selected interface. For

information about the DS1 and HDSL4 Alarm screens, see Table 11 on page 36.

5 Press to clear the screen.

6 Press to confirm.

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

1 Press to select the Config screen. 2 Use the and arrow keys to select Master Clear. 3 Press to activate. 4 Press to confirm (clear all screens).

24 September 12, 2003 H4TU-C-319 List 1

↑ ↓

ENTER

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

MONITORING SYSTEM ACTIVITY AND PERFORMANCE

The HDSL4 system provides the following maintenance screens for monitoring system activity and assessing performance.

• The Monitor screens provide a graphical representation of circuit activity and allow initiation of loopbacks.

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

continuous alarm history.

• The Event Log provides a description of the 100 most recent events which include their origin, time and date of occurrence, and message.

SYSTEM OVERVIEW

The H4TU-C-319 List 1 supports up to two doublers with three HDSL4 spans as shown in Figure 11.

Central Office

H4TU-C

Span 1 Span 2 Span 3 Span 1

The Monitor and Performance screens provide important activity and performance information about the HDSL4 spans and span devices.

H4D1 H4D2

Span 2

Span 1

Figure 11. System Spans

H4TU-R

2 Doublers 1 Doubler No Doubler

USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY

1 Press to view the system diagram.

Figure 12 on page 26 shows an armed circuit with an active loopback and alarms. Terms used on the system

diagram are defined in the onscreen Help menu glossary. Abnormal situations are highlighted on the diagram. See Table 8 on page 26 for screen field descriptions.

H4TU-C-319 List 1 September 12, 2003 25

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

DS1 Errors BERT Status

onitor Performance Event Log Config Inventory Report Rlogon Help

BERT Status: ACTIVE Time Elapsed: 00:00:50 Error Rate: <1.00E-10 M =16 15 16 17 16 16 LA =17 17 16 16 17 17

ARM INSL=23 23 22 22 23 23

ES =0 0 0 0 28 0 ESF SES =0 0 0 0 23 0 ESF B8ZS UAS =0 0 0 0 171 151 B8ZS

------->+-----+ LP1 +-----+ LP1 +-----+ LP1 +-----+------> | TUC |= ESF | | | | | | | | ESF B8ZS | LPF |============| |============| |============| | B8ZS <-------+-----+ LP2 +-----+ LP2 +-----+ LP2 +-----+<------

ES =6884 M =15 15 14 15 16 16 ES =0 SES=0 LA =18 17 17 16 17 17 SES=0 UAS=56 INSL=24 23 23 22 23 23 UAS=0 ES =0 0 0 0 2 2 PRM=0 SES =0 0 0 0 1 0 UAS =0 0 0 0 0 0

----------------------------------- LOOPBACKS ------------------------------Active Loopbacks : NLOC-PL

Press <Space> to select LB New Loopback: NLOC – Loopdown All Active Loopbacks and <Enter> to activate (LPDN,NLOC,CREM,NREM,CLOC) ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Frame Code and Type

Armed Mode Loop Attenuation Alarm TypeHDSL4 Errors

MAL========| DU1 |============| DU2 |============| TUR |

Active Loopback

Insertion Loss

Margin

System Status

Figure 12. Monitor Screen - Active Loopback with Alarms

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

SPACEBAR ENTER

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

Y N

cancel. For more information about loopbacks and troubleshooting, see “Testing” on page 42.

3 To initiate a loopdown of all active loopbacks, press the to select LPDN, then press .

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

SPACEBAR ENTER

Y N

cancel.

Table 8. Monitor Screen Descriptions

Field Description

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

indicated by gray text. See Table 16 on page 51 for a summary of the HDSL4 generic loopback codes and activation methods.

Alarm Type Indicates type of alarm.

MAL Margin Alarm—Indicates the margin on HDSL4 loop has dropped below the threshold (0 to 15 dB)

Armed Mode Indicates system is in an armed state for an intelligent repeater loopback command.

BERT Status Provides BERT Generator status, elapsed time, and BERT results.

DS1 Errors

ES Count Errored Seconds—The sum of the Errored Seconds-Line (ES-L) and Errored Seconds-Path (ES-P)

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

set by the operator.

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

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

Continued

26 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

Table 8. Monitor Screen Descriptions (Continued)

Field Description

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

a 24-hour period.

Frame and Code Type

ESF Type of DS1 framing used on the input stream (SF, ESF, or UNFR).

B8ZS Type of DS1 line coding used (B8ZS or AMI).

HDSL4 Errors

ES Count Errored Seconds—The number of 1-second intervals that contained at least one CRC or LOSW

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

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

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

UAS Count Unavailable Seconds—The number of seconds the HDSL4 loop is unavailable. This occurs after

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

ID Circuit identification number.

INSL Insertion Loss—The signal loss value for a 196 kHz signal over the cable pair.

LA Loop Attenuation—Indicates the attenuation of the Overlapped Pulse Amplitude Modulation

(OPAM) transmission pulse from the distant end. Proper HDSL4 loop operation requires that this value be less than 34 dB. This value differs from the insertion loss value of a conventional 196 kHz signal.

LPF Line Power Feed—Indicates the HDSL4 line power is on.

M Margin—The signal-to-noise ratio at all HDSL4 ports, relative to a 10-7 Bit Error Rate.

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

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

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

Messaging-Far End (PRM-FE) counts.

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

System: OK indicates that there are no alarms present; System: Alarm indicates the presence of an alarm. Refer to “Using the Performance Screens to View Alarm Data” on page 35.

H4TU-C-319 List 1 September 12, 2003 27

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA

The Performance screens display:

• DS1 and HDSL4 statistics in 31-day, 48-hour, 25-hour, and current history reports.

• Alarm statistics for the HDSL4 (Figure 22 on page 3 5 ) or DS1 interfaces (Figure 23 on page 36) on a

continuous basis.

To access the Performance history screens:

1 Press to select the Performance screen. 2 Press the to select either interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1

SPACEBAR

NET HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then press .

ENTER

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

History, or 31-Day History), then press .

SPACEBAR

ENTER

Performance History at the DS1 Interface

The performance history for the DS1 interface provides 31-day, 48-hour, 25-hour, and current statistics screens for the H4TU-C and the H4TU-R (as viewed from the H4TU-C).

Figure 13 is an example of an a DS1 performance history screen at the remote unit. Figure 14 and Figure 1 5 on page 29 are examples of DS1 performance history screens at the line unit. Table 9 on page 31 describes the

acronyms used in the performance history screens. Asterisks indicate performance monitoring from the previous day.

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-R DS1 31-Day History (Page 1 of 3)

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

01/18 0 0 0 0 0 0 0 86400 - 01/19 0 0 0 0 0 0 0 86400 - 01/20 0 0 0 0 0 0 0 86400 - 01/21 0 0 0 0 0 0 0 86401 - 01/22 0 0 0 0 0 0 0 86400 - 01/23 0 0 0 0 0 0 0 86400 - 01/24 0 0 0 0 0 0 0 86400 - 01/25 0 0 0 0 0 0 0 86400 - 01/26 0 0 0 0 0 0 0 86400 - 01/27 0 0 0 0 0 0 0 86400 - 01/28 0 0 0 0 0 0 0 86400 - 01/29 0 0 0 0 0 0 0 86400 - -

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

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

Use <Space> to cycle through Interface : H4TU-R DS1 choices and <Enter> to view Statistics : 31-Day History ID: xxxx--xxxx--xxxx—-xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 13. H4TU-R DS1 31-Day Performance History

28 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C DS1 25-Hour History (Page 1 of 9)

---------------------------------------------------------------------------- Time CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P

*15:15 0 0 0 0 0 0 0 900 *15:30 0 0 0 0 0 0 0 900 *15:45 0 0 0 0 0 0 0 900 *16:00 0 0 0 0 0 0 0 900 16:15 0 0 0 0 0 0 0 900 16:30 0 0 0 0 0 0 0 900 16:45 0 0 0 0 0 0 0 900 17:00 0 0 0 0 0 0 0 900 17:15 0 0 0 0 0 0 0 900 17:30 0 0 0 0 0 0 0 900 17:45 0 0 0 0 0 0 0 900 18:00 0 0 0 0 0 0 0 900

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

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

Use <Space> to cycle through Interface : H4TU-C DS1 choices and <Enter> to view Statistics : 25-Hour History ID: xxxx—-xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 14. H4TU-C DS1 25-Hour Performance History

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C DS1 48-Hour History (Page 1 of 4)

---------------------------------------------------------------------------- Time CV-L ES-L SES-L UAS-L CV-P ES-P SES-P UAS-P

*17:00 0 0 0 0 0 0 0 3600 *18:00 0 0 0 0 0 0 0 3600 *19:00 0 0 0 0 0 0 0 3600 *20:00 0 0 0 0 0 0 0 3600 *21:00 0 0 0 0 0 0 0 3600 *22:00 0 0 0 0 0 0 0 3600 *23:00 0 0 0 0 0 0 0 3600 *00:00 0 0 0 0 0 0 0 3600 *01:00 0 0 0 0 0 0 0 3600 *02:00 0 0 0 0 0 0 0 3600 *03:00 0 0 0 0 0 0 0 3600 *04:00 0 0 0 0 0 0 0 3600

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

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

Use <Space> to cycle through Interface : H4TU-C DS1 choices and <Enter> to view Statistics : 48-Hour History ID: xxxx--xxxx--xxxx—-xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 15. H4TU-C DS1 48-Hour Performance History

H4TU-C-319 List 1 September 12, 2003 29

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

Examples of current statistics screens are shown below. Figure 16 and Figure 17 show statistics for the DS1 interface at the remote unit and line unit, respectively. These screens report 1-day, 1-hour, and 15-minute statistics. Refer to Table 9 on page 31 for descriptions of the kinds of errors reported on these screens.

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-R DS1 Current Statistics

---------------------------------------------------------------------------- 1 Day 1 Hour 15 Min Start 05:57 07:00 07:00

CV-L 0 0 0 ES-L 0 0 0 SES-L 0 0 0 UAS-L 0 0 0 CV-P 0 0 0 ES-P 0 0 0 SES-P 0 0 0 UAS-P 0 0 0 PRM-NE No PRM Detected PRM-FE No PRM Detected B8ZSS 0 0 0 MSEC 0 0 0 Press: C(l)ear Current Statistics

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

Use <Space> to cycle through Interface : H4TU-R DS1 choices and <Enter> to view Statistics : Current ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 16. H4TU-R DS1 Current Statistics

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C DS1 Current Statistics

---------------------------------------------------------------------------- 1 Day 1 Hour 15 Min Start 05:57 07:00 07:00

CV-L 0 0 0 ES-L 0 0 0 SES-L 0 0 0 UAS-L 0 0 0 CV-P 0 0 0 ES-P 0 0 0 SES-P 0 0 0 UAS-P 4242 476 476

B8ZSS 0 0 0 MSEC 4242 476 476 Press: C(l)ear Current Statistics

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

Use <Space> to cycle through Interface : H4TU-C DS1 choices and <Enter> to view Statistics : Current ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 17. H4TU-C DS1 Current Statistics

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LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

Table 9. Acronyms Used on the DS1 Performance History Screens

Acronym Description Acronym Description

CV-L Code Violation - Line

Total BPV count.

(b)

ES-L

Errored Seconds - Line Seconds with BPV ≥1.

SES-L Severely Errored Seconds - Line

Seconds with BPV plus EXZ ≥1544 or LOS ≥1.

UAS-L Unavailable Seconds - Line

Seconds with LOS ≥1.

CV-P Code Violation - Path

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

(e)

ES-P

(a) FE is a frame bit error. (b) Line (L) refers to the AMI DS1 line used to transport the payload. (c) Only displays on H4TU-R Performance History screens. (d) Displays on the DS1 Current Statistics screens. (e) Path (P) refers to the total framed payload being transported between two points. (f) Severely Errored Frame–Two or more frame bit errors occurring in a 0.75 ms interval for SF or a 3 ms interval for ESF.

Errored Seconds - Path Seconds with SEF

(a)

(SF) ≥1.

(f)

, CRC (ESF), or

SES-P Severely Errored Seconds - Path

Seconds with SES or CRC(ESF) ≥320 or

(a)

(SF) ≥8 (FT + FS).

UAS-P Unavailable Seconds - Path

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

PRM-NE

(c)

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

(c)

PRM-FE

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

(d)

B8ZSS

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

(d)

MSEC

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

H4TU-C-319 List 1 September 12, 2003 31

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

Performance History at the HDSL4 Interface

The HDSL4 interface has 31-day, 48-hour, 25-hour, and current statistic screens for the H4TU-C. Figure 18 and

Figure 19 below are examples of 31-day and 48-hour performance history screens. Figure 20 on page 33 is an

example of a 25-hour performance history screen. Refer to Table 10 on page 34 for descriptions of the kinds of errors reported on all HDSL4 performance screens. Asterisks indicate performance monitoring from the previous day.

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C HDSL 31-Day History (Page 1 of 3) LP1/LP2

---------------------------------------------------------------------------- Date CV ES SES UAS LOSWS

01/19 0/0 0/0 0/0 0/0 0/0 01/20 0/0 0/0 0/0 0/0 0/0 01/21 0/0 0/0 0/0 0/0 0/0 01/22 0/0 0/0 0/0 0/0 0/0 01/23 0/0 0/0 0/0 0/0 0/0 01/24 0/0 0/0 0/0 0/0 0/0 01/25 0/0 0/0 0/0 0/0 0/0 01/26 0/0 0/0 0/0 0/0 0/0 01/27 0/0 0/0 0/0 0/0 0/0 01/28 0/0 0/0 0/0 0/0 0/0 01/29 0/0 0/0 0/0 0/0 0/0 01/30 0/0 0/0 0/0 0/0 0/0

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

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

Use <Space> to cycle through Interface : H4TU-C HDSL choices and <Enter> to view Statistics : 31-Day History ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 18. H4TU-C HDSL (Loop 1/Loop 2) 31-Day Performance History

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C HDSL 48-Hour History (Page 1 of 4) LP1/LP2

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

*08:00 0/0 0/0 0/0 0/0 0/0 *09:00 0/0 0/0 0/0 0/0 0/0 *10:00 0/0 0/0 0/0 0/0 0/0 *11:00 0/0 0/0 0/0 0/0 0/0 *12:00 0/0 0/0 0/0 0/0 0/0 *13:00 0/0 0/0 0/0 0/0 0/0 *14:00 0/0 0/0 0/0 0/0 0/0 *15:00 0/0 0/0 0/0 0/0 0/0 *16:00 0/0 0/0 0/0 0/0 0/0 *17:00 0/0 0/0 0/0 0/0 0/0 *18:00 0/0 0/0 0/0 0/0 0/0 *19:00 0/0 0/0 0/0 0/0 0/0

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

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

Use <Space> to cycle through Interface : H4TU-C HDSL choices and <Enter> to view Statistics : 48-Hour History ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 19. H4TU-C HDSL (Loop 1/Loop 2) 48-Hour Performance History

32 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C HDSL 25-Hour History (Page 1 of 9) LP1/LP2

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

*06:45 0/0 0/0 0/0 0/0 0/0 *07:00 0/0 0/0 0/0 0/0 0/0 *07:15 0/0 0/0 0/0 0/0 0/0 *07:30 0/0 0/0 0/0 0/0 0/0 07:45 0/0 0/0 0/0 0/0 0/0 08:00 0/0 0/0 0/0 0/0 0/0 08:15 0/0 0/0 0/0 0/0 0/0 08:30 0/0 0/0 0/0 0/0 0/0 08:45 0/0 0/0 0/0 0/0 0/0 09:00 0/0 0/0 0/0 0/0 0/0 09:15 0/0 0/0 0/0 0/0 0/0 09:30 0/0 0/0 0/0 0/0 0/0

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

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

Use <Space> to cycle through Interface : H4TU-C HDSL choices and <Enter> to view Statistics : 25-Hour History ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 20. H4TU-C HDSL (Loop 1/Loop 2) 25-Hour Performance History

Figure 21 shows statistics for the HDSL4 interface at the H4TU-C. This screen reports 1-day, 1-hour, and

15-minute statistics. Refer to Table 10 on page 34 for descriptions of the kinds of errors reported on this screen.

onitor Performance Event Log C onfig Inventory Report Rlogon Help

H4TU-C HDSL Current Statistics LP1/LP2

---------------------------------------------------------------------------- 1 Day 1 Hour 15 Min Start 05:57 07:00 07:30

CV 0/0 0/0 0/0 ES 0/0 0/0 0/0 SES 0/0 0/0 0/0 UAS 0/0 0/0 0/0 LOSWS 0/0 0/0 0/0

Margin(dB) LA(dB) INSL(dB) Hi 16/17 Cur 14/16 0/0 0/0 Low 13/13

Press: C(l)ear Current Statistics

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

Use <Space> to cycle through Interface : H4TU-C HDSL choices and <Enter> to view Statistics : Current ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 21. H4TU-C HDSL (Loop 1/Loop 2) Current Statistics

H4TU-C-319 List 1 September 12, 2003 33

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

Table 10. Acronyms Used on the HDSL4 Performance History Screens

Acronym Description

CV Code Violation

ES Errored Seconds

SES Severely Errored Seconds

UAS Unavailable Seconds

LOSWS Loss of Sync Word Second

Total count of HDSL4 CRC errors

Seconds with HDSL4 CRC ≥1 or LOSW ≥1

Seconds with HDSL4 CRC ≥50 or LOSW ≥1

Based on 10 contiguous SES occurrences

Seconds with LOSW ≥1

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LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA

To access the alarm history screens:

1 Press to select the Performance screen. 2 Press the to select an interface (H4TU-C DS1, H4TU-R DS1, H4TU-C HDSL, H4DU-1 NET

SPACEBAR

HDSL, H4DU-1 CPE HDSL, H4DU-2 NET HDSL, H4DU-2 CPE HDSL, or H4TU-R HDSL), then press

ENTER

3 Press the until Alarm History is selected, then press . (To clear the selected alarm history

screen, press .)

SPACEBAR ENTER

Alarm History at the DS1 Interface

The Alarm History screen reports DS1 statistics for the H4TU-C (Figure 22) and the H4TU-R (Figure 23 on

page 36) on a continuous basis. The types of alarms reported are described in Table 11 on page 36. Current alarms

are shown in reverse video.

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C DS1 Alarm History

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

Alarm First Last Status Count

LLOS 01/30/02 ALARM 12 LAIS OK 0 DBER OK 7 LOF 01/30/02 OK 0

Press: C(l)ear Alarm History

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

Use <Space> to cycle through Interface : H4TU-C DS1 choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx—-xxxx 02/01/2002 12:30:01 H4TU-C System: Alarm

Figure 22. H4TU-C DS1 Alarm History Screen

H4TU-C-319 List 1 September 12, 2003 35

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-R DS1 Alarm History

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

Alarm First Last Status Count

RLOS OK 0 RAIS OK 0 RAI OK 0 LRAI OK 0 PRM-NE OK 0 PRM-FE OK 0 DBER 01/30/02 00:37 01/30/02 00:45 OK 7 LOF OK 0

Press: C(l)ear Alarm History

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

Use <Space> to cycle through Interface : H4TU-R DS1 choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: Alarm

Figure 23. H4TU-R DS1 Alarm History Screen

Table 11. DS1 Alarm Descriptions

Screen Alarm

H4TU-C DS1 Alarms (Figure 22 on page 35)

(a)

LLOS

(a)

LAIS

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

LOF xxx-LOF Loss of Frame—Indicates the incoming DS1 frame pattern is other than the one selected, ESF or SF,

H4TU-R DS1 Alarms (Figure 23 on this page)

(b)

RLOS RAIS RAIS Remote Alarm Indication Signal—Indicates an AIS (unframed all ones) pattern is being received at the

RAI RRAI Remote RAI - Remote Alarm Indication at the H4TU-R—Indicates an RAI alarm (yellow) from the CPE

LRAI LRAI Line (Clear) Remote Alarm Indication—An RAI condition is detected at the remote and the signal from

PRM-NE PRMN Performance Report Messaging - Near End—The count of the PRM-NE register at the H4TU-R

PRM-FE PRMF Performance Report Messaging - Far End—The count of the PRM-FE register at the H4TU-R exceeds

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

LOF xxx-LOF Loss of Frame—Indicates the incoming DS1 payload does not contain the specific frame pattern, ESF

(a) This is a DS1-specific alarm that also issues a minor alarm (sent to the management unit or the backplane), if enabled. (b) AIS-CI is a modified AIS alarm pattern. Equipment not suited to detect AIS-CI still detects this signal as an AIS. AIS-CI is sent

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

Front-Panel Alarm

Description

LLOS Line (Unit) Loss of Signal—Loss of the H4TU-C DSX-1 input signal. LAIS Line Alarm Indication Signal—Indicates an AIS (unframed all ones) pattern is being received at the

H4TU-C DS1 input port.

-6

. (xxx denotes either TUC or TUR.)

by the FRMG option. Only occurs if the FRMG option is set to SF or ESF. (xxx denotes either TUC or TUR.)

RLOS Remote (Unit) Loss of Signal—Loss of the H4TU-R DS1 input signal.

H4TU-R DS1 input port. By default AIS-CI

(b)

is sent towards the network (see Figure 27 on page 45)

with errors from the line unit or network.

the line unit is error-free. RAI signal is transmitted towards the network.

exceeds the 10

-6

the 10

-6

. (xxx denotes either TUC or TUR.)

-6

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

or SF, selected by the FRMG option. Only occurs if the FRMG option is set to SF or ESF. (xxx denotes either TUC or TUR.)

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Alarm History at the HDSL4 Interface

The HDSL4 Alarm History screens report alarms for the HDSL4 interface at the H4TU-C and H4TU-R. Figure 24 shows the H4TU-C HDSL4 alarm history. Table 12 describes the alarms that are reported at the H4TU-C or H4TU-R.

onitor Performance Event Log C onfig Inventory Report R logon Help

H4TU-C HDSL Alarm History

---------------------------------------------------------------------------- Alarm First Last Status Count

LOSW-LP1 01/15/02 16:45 01/15/02 16:45 OK 1 MAL -LP1 01/15/02 16:44 01/15/02 16:44 OK 1 LA -LP1 OK 0 HBER-LP1 DISABLED 0 LOSW-LP2 01/15/02 16:45 01/15/02 16:45 OK 1 MAL -LP2 OK 0 LA -LP2 OK 0 HBER-LP2 DISABLED 0 SHORT OK 0 GND OK 0 OPEN OK 0

Press: C(l)ear Alarm History -

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

Use <Space> to cycle through Interface : H4TU-C HDSL choices and <Enter> to view Statistics : Alarm History ID: xxxx--xxxx--xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: Alarm

Figure 24. H4TU-C HDSL Alarm History Screen

Table 12. HDSL4 Alarm Descriptions

Screen Alarm Front-Panel Alarm Description

HDSL4 Alarms at the H4TU-C and H4TU-R

LOSW SPNn-LOSW Loss of Sync Word—The HDSL4 loop has lost synchronization.

MAL xxxx-MALx Margin—The margin on the HDSL4 loop has dropped below the minimum threshold

LA xxxx-LAx Loop Attenuation—The attenuation on the HDSL4 loop has exceeded the maximum value

HBER xxxx-HBRx Block Error Rate—The HDSL4 BER has exceeded the set threshold limits of 10

HDSL4 Alarms at the H4TU-C only

(a)

SHORT

(a)

GND

(a)

OPEN

(a) Displays only at the H4TU-C HDSL interface.

PWR FEED SHRT Indicates a short between Loop 1 and Loop 2 of the HDSL4 pair.

PWR FEED GND One of the HDSL4 loops is grounded.

PWR FEED OPEN Indicates a line power open condition.

value set for the system. xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4

upstream or downstream interface. If TUC and TUR occur at the same time, then TUC displays. The single x indicates Loop 1 or Loop 2.

set for the HDSL4 loop attenuation threshold. xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4

upstream or downstream interface. If TUC and TUR occur at the same time, then TUC displays. The single x indicates Loop 1 or Loop 2.

-6

or 10

xxxx denotes TUC, TUR, or first (DU1U/DU1D) or second (DU2U/DU2D) doubler HDSL4 upstream or downstream interface. If TUC and TUR occur at the same time, then TUC displays. The single x indicates Loop 1 or Loop 2.

- 7

H4TU-C-319 List 1 September 12, 2003 37

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

USING THE EVENT LOG TO TRACK SYSTEM EVENTS

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

time of the 100 most recent events (the most recent displayed first) and provides a description of each event. See

Table 13 on page 39 for an alphabetical listing of all possible event log messages.

• Press or to page through the event log.

• Press to return to the top of the log.

• Press to clear the event log.

N P

onitor Performance Event Log C onfig Inventory Repo rt Rlogon Help

System Event Log (Page 1 of 7)

----------------------------------------------------------------------------# Origin Date and Time Entry

1 Line Unit 01/15/02 16:44:41 MAL Alarm TUC Lp 1: End 2 Line Unit 01/15/02 16:44:41 LOSW Alarm span 1: End 3 Line Unit 01/15/02 16:44:39 MAL Alarm TUC Lp 1: Begin 4 Managment Host 01/15/02 16:45:10 Time set to 16:44:18 5 Line Unit 01/15/02 16:45:03 DS1 AIS Alarm: Begin 6 Line Unit 01/15/02 16:45:03 LOSW Alarm span 1: Begin 7 Line Unit 01/15/02 00:00:00 Time set to 16:45:00 8 Line Unit 01/15/02 16:15:33 MAL Alarm TUC Lp 1: End 9 Line Unit 01/15/02 16:15:33 LOSW Alarm span 1: End 10 Line Unit 01/15/02 16:15:31 MAL Alarm TUC Lp 1: Begin 11 Line Unit 01/15/02 16:15:03 DS1 AIS Alarm: Begin 12 Line Unit 01/15/02 16:15:03 LOSW Alarm span 1: Begin 13 Line Unit 01/15/02 00:00:00 Time set to 16:15:00 14 Line Unit 01/15/02 14:53:17 MAL Alarm TUC Lp 2: End 15 Line Unit 01/15/02 14:53:16 LOSW Alarm span 1: End

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

ID: xxxx--xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 25. System Event Log

38 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

Table 13. Event Log Entry Messages List

Event Log Messages

HDSL4 DC pair open begins/ends on any segment

HDSL4 Ground fault begins/ends on any segment

H4TU-C Power up/down

H4TU-R Power up/down

HDSL4 margin alarm (threshold crossed) on any HDSL4 Interface (I/F)

HDSL4 loop attenuation (threshold crossed) on any HDSL4 I/F

HDSL4 HBER alarm (threshold crossed) on any HDSL4 I/F

HDSL4 LOSW begins/ends on any segment

CPE DBER alarm (1-day threshold of any PM data crossed—except PRM-NE or PRM-FE)

CPE PRM-NE BER alarm (at the remote only: 1-day PRM-NE threshold crossed: trouble on CPE receive)

NTWK PRM-FE BER alarm (at the remote only: 1-day PRM-FE threshold crossed: trouble on NTWK far end)

NTWK DBER alarm (1-day threshold of any PM data crossed)

CPE DS1 LOS begins/ends

CPE DS1 AIS begins/ends

NTWK DS1 LOS begins/ends

NTWK DS1 AIS begins/ends

TX RAI-CI begins/ends (RAI-CI sent from the remote towards the network)

RAI begins/ends

Any HDSL4 PM register reset

Any DS1 PM register reset

Any DS1 Alarm History reset

Any HDSL4 Alarm History reset

Event Log reset

Current statistics reset

Master zero reset

Any provisioning option change: <provisioning mnemonic>: changed from <old> to <new>

Any Loop Up (any segment)

Any Loop Down (any segment)

Power Feed Short begins / ends

H4TU-C-319 List 1 September 12, 2003 39

Monitoring System Activity and Performance LTPH-UM-1031-03, Issue 3

USING THE REPORT MENU

The Report menu (Figure 26) provides screens containing status and performance monitoring data for line and remote units which can be downloaded to a file for analysis or future reference. Table 14 on page 41 describe s the four types of reports provided by the Report menu.

To select each individual report, do the following:

1 Press to select Report menu. 2 Press the to select a re por t type and print mode.

SPACEBAR

— Continuous Print Mode generates a non-stop version of the report. — Page Mode generates a page-by-page version of the report for easy viewing on the screen.

3 Use your terminal emulation software (HyperTerminal or Procomm) to capture the selected report to your

printer. Press to generate. (If Page Mode is selected, press the to continue or to quit.)

ENTER SPACEBAR ESC

4 End the captured report. 5 Press + to refresh the Report menu screen.

CTRL R

onitor Performance Event Log C onfig Inventory Report Rlogon Help

Report Type : Full Report Print Mode : Continuous Please select report type and print mode by pressing <Space>, then start terminal logging and press <Enter> to generate the report.

ID: xxxx—-xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK_

Figure 26. Report Menu - Full Report

40 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

Table 14. Report Types

Type Contains the following information:

Full Report • Circuit and unit identifications

• Product information

• System configuration

• Current performance statistics

• Alarm history

• Performance history

• System event log

Short Report • Circuit and unit identifications

• Product information

• System configuration

• Current performance statistics

System Information Report • Circuit and unit identifications

• Product information

• System configuration

Event Report • Circuit and unit identifications

• Product information

• System event log

H4TU-C-319 List 1 September 12, 2003 41

Testing LTPH-UM-1031-03, Issue 3

TESTING

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

SYSTEM ALARMS

Table 15 summarizes all possible system alarms in order of priority as they appear on the front panel. When

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

on page 28). Alarms that are not inhibited will drive the front-panel Status LED to a flashing red alarm state.

Table 15. Front-Panel System Alarms

Front-Panel Message

PWR FEED

(b)

SHRT

PWR FEED

(b)

GND

PWR FEED

(b)

OPEN

SPNn-LOSW Span(n)-Loss of Sync

LLOS Line (Unit) Loss of

RLOS Remote (Unit) Loss of

LAIS Line Alarm Indication

RAIS Remote Alarm

Alarm Description To Inhibit:

(a)

Power Feed Short A short exists between Loop 1 and Loop 2 of

Power Feed Ground One of the HDSL4 loops is grounded. Cannot be inhibited.

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

(c)

Word

Signal

Indication Signal

the HDSL4 pair.

The HDSL4 loop has lost synchronization. The span closest to the network has highest priority.

Loss of the DSX-1 input signal. Cannot be inhibited.

Loss of the H4TU-R DS1 input signal. Disable the RDA (Remote Disconnect

Indicates an AIS (unframed all ones) pattern is being received at the H4TU-C DS1 input port.

Indicates an AIS (unframed all ones) pattern is being received at the H4TU-R DS1 input port.

Cannot be inhibited.

Alarm) option. This prevents an LOS condition at the DS1 input to a H4TU-R from activating pin H. The front-panel Status LED still flashes red and the ALRM RLOS message displays to alert you of the LOS state. LOS is sent towards the network from the H4TU-C. This option prevents the common occurrences of a CPE LOS condition from generating recurring alarms and AIS payloads.

Cannot be inhibited.

LRAI Line RAI—Remote

Alarm Indication at the H4TU-R (Net signal does not have errors.)

42 September 12, 2003 H4TU-C-319 List 1

Indicates an RAI alarm (yellow) from the CPE with an error-free signal from the line unit or network. RAI signal is transmitted towards the network.

Cannot be inhibited.

Continued

LTPH-UM-1031-03, Issue 3 Testing

Table 15. Front-Panel System Alarms (Continued)

Front-Panel Message

RRAI Remote RAI—Remote

Alarm Description To Inhibit:

(a)

Indicates an RAI alarm (yellow) from the CPE

Alarm Indication at the

with errors from the line unit or network.

Cannot be inhibited.

H4TU-R (Net signal has errors.)

xxx-DBER DS1 Bit Error Rate The DS1 BER has exceeded the set 24-hour

threshold limit of approximately 10

-6

. (xxx

Select DIS for the DBER system option.

denotes either TUC or TUR. If TUC and TUR occur at the same time, then TUC displays.)

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

Change FRMG option to AUTO or UNFR. frame pattern setting of the FRMG option. (xxx denotes either TUC or TUR. If TUC and TUR occur at the same time, then TUC displays.)

PRMN Performance Report

Messaging - Near End

PRMF Performance Report

Messaging - Far End

xxxx-HBRx

(d)

HDSL4 Block Error Rate

H4TU-R PRM-NE BER threshold has been exceeded.

H4TU-R PRM-FE BER threshold has been exceeded.

The HDSL4 BER has exceeded the set threshold limits of 10

-6

or 10

- 7

Set DBER threshold to DIS.

Select NONE for the HBER system option.

xxxx-MALx

(d)

Margin Alarm The margin on the HDSL4 loop has dropped

below the minimum threshold value set for the

Set the Margin Alarm Threshold option to

zero. system.

xxxx-LAx

(d)

Loop Attenuation The attenuation on the HDSL4 loop has

exceeded the maximum value set for the

Set the HDSL4 Loop Attenuation

Threshold option to zero. HDSL4 loop attenuation threshold.

(a) The message, ALRM, displays prior to any alarm message. (b) Message displays repeatedly as long as the alarm condition exists and is not included in the priority order. (c) When the HDSL4 loop loses sync word (LOSW), a system alarm condition exists. However, since the H4TU-C-319 enters the

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

(d) Only these alarms assert the System Alarm bus on pin H of the card-edge connector, if the ALM option is set to enabled.

H4TU-C-319 List 1 September 12, 2003 43

Testing LTPH-UM-1031-03, Issue 3

Alarm Option for DLC Feed

To improve HDSL4 compatibility with the switch-to-protect features used in DLC feeder applications, the H4TU-C-319 has an Alarm Pattern (ALMP) option that allows you to select either an AIS or LOS DS1 output payload for the following alarms:

• LOSW on any loop

• LOS DS1

Retiring System Alarms

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

44 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

Remote LOS and AIS Response

Figure 27 shows the different ways the H4TU-R can respond to the network, depending on the configuration of

the NLBP, TLOS, RDA, and ALMP configuration options described in Table 5 on page 19 and Table 6 on

page 20.

H4TU-R, DS1 Input

AIS to CPE

AIS

Remove alarm

pattern

Standard Option

ADC Option

Default configurations are in bold.

LOS event?

AIS event?

YES

DIS

ENA

AIS

TLOS

RDA

ALMP

ENA

DIS

LOS

NLBP

LOS

LOS to CPE

Loopback to Network

Pass on LOS to

Network, no alarm

report

Pass on LOS to

Network

AIS to Network

Figure 27. H4TU-R LOS and AIS Response Priorities

OCT55 TEST PATTERN WITH AMI LINE CODE

The OCT 55 test pattern can be used in unframed mode to stress the system and verify data integrity. In an SF or ESF framing mode, excessive zero anomalies may occur, which causes the H4TU-C to report ES, SES, and UAS errors according to ANSI T1.231-1997.

H4TU-C-319 List 1 September 12, 2003 45

Testing LTPH-UM-1031-03, Issue 3

LOOPBACK OPERATION

HDSL4 has a family of loopback options for analyzing circuit functionality. The loopback signal is transmitted and returned to the sending device for comparison. This allows you to verify the integrity of the HDSL4 channels to the H4TU-C, the H4TU-C DSX-1 interface, and the DS1 channels to the customer.

Loopback options include:

• Generic Loopback (GNLB) options, including the SmartJack (SMJK) option (see Table 16 on page 51)

• A3LB Addressable Repeater Loopback command (see Table 17 on page 52)

• A5LB Addressable Repeater Loopback command (see Table 18 on page 53)

Loopback commands can be initiated by:

• Selecting the loopback type using the MODE and SEL pushbuttons on the H4TU-C front panel or the manual loopback (LBK) pushbutton on the H4TU-R front panel

• Selecting the loopback type from the Monitor menu when connected to the craft port of the H4TU-C or H4TU-R

• Entering the loopback code (exceptions are COLB and RULB) into the test equipment connected to the H4TU-C or H4TU-R

Activate loopback using one of the following:

• MODE/SEL pushbuttons

• Maintenance Terminal

• Test Set

ADC HDSL4 supports multiple loopbacks, but a single loopback is the preferred method. HDSL4 automatically rejects activation of closed loop looopbacks. For example, an NREM and CREM cannot be activated at the same time.

Span 1

DSX-1

NLOC NDU1 NDU2

Network

CREM CDU1 CDU2 CLOC

H4TU-C

H4D1

* When enabled, TLOS is an automatic loopback

that occurs with an LOS at the remote DS1 input.

Span 2

Figure 28. Loopback Summary

H4D2

Span 3

NREM SMJK TLOS*

Activate loopback using one of the following:

• LBK pushbutton

• Maintenance Terminal

• Test Set

H4TU-R

Customer Premises

46 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

Generic Loopback Commands

The HDSL4 Generic Loopback (GNLB) commands allow you to use inband codes to loop up either NLOC (4-in-7) or NREM (3-in-7) towards the network. In addition, these inband codes loop up CREM (6-in-7) or CLOC (5-in-7) towards the customer. Either loopup condition can be terminated (looped down) with the 3-in-5, SMJK loopdown code. All inband codes must be present for at least 5 seconds before the HDSL4 system responds. TLOS is a logic loopback caused by loss of the DS1 input from the CI.

Figure 29 on page 50 summarizes the available loopbacks in the system, and Table 16 summarizes the HDSL4

generic loopback commands. See “GNLB Test Procedures” on page 51 for the test procedures that apply

HDSL4 systems feature the SmartJack option, which can emulate a Network Interface Device (NID) for the purpose of loopback testing of the HDSL4 circuit. SMJK and NREM loopbacks perform the same functions but their initiation differs. SMJK indicates that the loopback was initiated by the 2-in-5 inband command. NREM, on the other hand, is initiated by the 3-in-7 inband command or by a command issued from the maintenance terminal or the MODE and SEL pushbuttons.

Use the inband commands to enable or disable the SMJK loopback options. The H4TU-C-319 system setting is normally enabled to recognize all inband SmartJack loopback commands.

Special Loopback Commands

A3LB and A5LB loopback commands can be sent by a test set connected to the H4TU-C or H4TU-R. See

Table 17 on page 52 and Table 18 on page 53 for a list of the commands.

A3LB and A5LB are special, addressable, repeater loopback modes which are supported by the H4TU-C. These loopback modes provide the HDSL4 system with sophisticated maintenance and troubleshooting tools. A3LB and A5LB are patterned after the Westell addressable T1 repeater loopbacks.

The A5LB loopback selection complies with that proposed for HDSL4 systems in the T1E1.4/92 looopback recommendation with the following additions:

• Query loopback

• IOR (Intelligent Office Repeater) power-down

• Four loopback time-out choices

• Initiation from either end

• Repeating bit error signatures

• Alternate query loopback

A5LB does not block the arming code from exiting the H4TU-C-319 into the network. Since A5LB never blocks the arming code from exiting the H4TU-C, the Far-End Activate code is not available in A5LB. A3LB supports the additional (1-in-6) SMJK loopback command.

H4TU-C-319 List 1 September 12, 2003 47

Testing LTPH-UM-1031-03, Issue 3

Manual Loopback Session

A manual loopback session allows you to select any one of the HDSL4 loopbacks listed in Table 16 on page 51 with the exception of SmartJack loopbacks, which can only be issued by inband commands.

Setting the Loopback Time-Out Option (LBTO)

Before initiating a loopback session, verify that the Loopback Time-Out parameter is set to the desired setting. 1 Use the MODE and SEL pushbuttons as described in “Setting Options through MODE and SEL” on page 10.

(The loopback time-out parameter is also user-selectable from the Config Menu, Standard Options screen when using a maintenance terminal.)

2 Select the desired setting:

• NONE (time-out disabled)

• 20 minutes

• 60 minutes

• 120 minutes

• 8 hr

• 24 hr

Activating Manual Loopback Mode

With the exception of SmartJack, any of the HDSL4 loopbacks can be executed using the MODE and SEL pushbuttons.

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

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

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

• If any loopback is in effect, the 30-second time-out is inhibited. The active loopback and the manual loopback sessions continue until the loopback times out in accordance with the LBTO setting.

• If there is an active loopback, pressing the MODE and SEL pushbuttons for 3 or more seconds terminates any active loopback, ends the manual loopback session, and returns the display to normal mode.

To initiate a manual loopback session: 1 Press both the MODE and SEL pushbuttons on the front panel for at least 3 seconds. The following message

appears on the front-panel display: MAN LPBK NLO? (XXXX indicates loopback choices)

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

• NDx? = Doubler 1 or Doubler 2, if H4D is avai lable

• NRE? = NREM

• CRE? = CREM

48 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

• CDx? = Doubler 1 or Doubler 2, if H4D is available

• CLO? = CLOC

• COL? = Dual loopback at H4TU-C

• DxL? = Dual loopback at Doubler 1 or Doubler 2, if available

• RUL? = Dual loopback at H4TU-R

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

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

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

All loopbacks can be initiated by inband commands in the DS1 payload or by a command from the HDSL4 system (front-panel pushbuttons or maintenance screen selections). Therefore, whenever a loopback is active, the method by which it was activated is indicated in the loopback and status information (Monitor screen) by the annotation HG or PL adjacent to the identified loopback. For example, NREM-HG indicates that the loopback was initiated by the HDSL4 system.

SMJK loopback commands are only activated by inband commands.

LOOPBACK TEST PROCEDURES

The following sections provide step-by-step test procedures for verifying the integrity of the HDSL4 channels at every module location as well as the DS1 channels to the customer and the local DSX-1 interface. Figure 29 on

page 50 summarizes the available loopbacks in the system.

General Troubleshooting Tips

If trouble is encountered on the DSX-1 interface of the H4TU-C, verify that the:

• H4TU-C is making a positive connection with its shelf connector.

• H4TU-C internal equalizer is set to the correct distance range per Table 5 on page 19. All equalizers should

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

The transmit and receive DSX-1 ports have splitting access jacks and miniature, 210-series, bridging jacks as shown in Figure 1 on page 3. Connecting one cable between the two (BRG) jacks and another between the two LINE jacks splits the IN and OUT and creates metallic loopbacks towards both the DSX-1 and the H4TU-C-319. If separate plugs are inserted into both LINE jacks with the other end disconnected, the BRG jacks can be used to send and receive test patterns towards the DSX-1.

H4TU-C-319 List 1 September 12, 2003 49

Testing LTPH-UM-1031-03, Issue 3

DSX-1

All ones

LoopbacksToward Network

HLU

H4TU-C

HLU

H4TU-C

HLUHLUHLU

H4TU-C

SPAN 4 SPAN 3

NLOC

4-in-7

HLUHLUHLU

H4TU-C

CREM

HLUHLUHLU

6-in-7

H4TU-C

HLUHLUHLUHLUHLUHLUHLUHLUHLUHLUHLUHLUHLUHLUHLU

H4TU-C

HLUHLUHLU

H4TU-C

FF1E

D3D3 ‡

1111000

3F1E

D3D3 ‡

1111110

SPAN 1

LoopbacksToward Customer

SPAN 1 SPAN 2

HDSL4 SPAN

FF04 FF06

C741 ‡

CDU1

NDU1

2-in-6

4 in 6

SPAN 2

111100

110000

H4D1

HDU-409

HDSL4 SPAN

3F04 3F06

C741 ‡

CDU1

4-in-6 11110 0

H4D1

C754 ‡

NDU2

3-in-6 111000

H4D2

C754 ‡

CDU2

5-in-6 111110

H4D2

CDU1

4 in 6 111100

HDU-409

SPAN 3

TLOS*

HRU-412

LOGIC

HRU-412

H4TU-R

SMJK*

HRU-412

2-in-5

FF02

C742 ‡

3F02

C742 ‡

HRU-412

H4TU-R

NREM*

NREM

HRU-412

3 in 7

HRU-412

H4TU-R

HRU-412

H4TU-R

HRU-412

H4TU-R

HRU-412

H4TU-R

HRU-412

H4TU-R

CLOC

5 IN 7

CLOC

5 IN 7

5-in-7

11000

1110000 3-in-7

111110 0

All ones

CI-Customer Interface

Bidirectional (Dual) Loopbacks

H4TU-C

HLUHLUHLU

COLB

H4D1

D1LB

H4D2

D2LB

H4TU-R

RULB

* Set the NLBP option to AIS to send AIS (indicated by an all ones pattern) for any network loopback.

A3LB loopback codes.

‡ A5LB loopback codes.

GNLB loopback codes.

Figure 29. Loopback Modes

50 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

GNLB Test Procedures

Figure 29 on page 50 is a graphical representation of the various loopback configurations with the associated

GNLB commands shown. Refer to Table 16 for a description of these commands.

Table 16. S ummary of HDSL4 Loopback and Activation Codes

Method of Activation

Loopback Code Description Test Set Craft Port MODE/SEL

NLOC 1111000

4-in-7

NREM 1110000

3-in-7

NDU1 110000

2-in-6

CDU1 111100

4-in-6

NDU2 111000

3-in-6

CDU2 111110

5-in-6

D1LB Dual loopback at H4D1. X

D2LB Dual loopback at H4D2. X

CLOC 1111100

5-in-7

CREM 1111110

6-in-7

COLB Dual loopback at the H4TU-C. DSX-1 signal is

RULB Dual loopback at the H4TU-R. DSX-1 signal is

SMJK LpUp (PL)

SMJK LpUp (ESF-DL)

SMJK LpDn (PL)

SMJK LpDn (ESF-DL)

11000 2-in-5

1111-11110100-1000

11100 3-in-5

1111-11110010-0100

DSX-1 signal is looped back to the network at the H4TU-C.

DSX-1 signal is looped back to the network at the H4TU-R.

Signal is looped back to the network at H4D1.

DS1 signal from customer is looped back to the customer at H4D1.

Signal is looped back to the network at H4D2.

DS1 signal from customer is looped back tot he customer at H4D2.

DS1 signal from the customer is looped back to the customer at the H4TU-R.

DS1 signal from the customer is looped back to the customer at the H4TU-C.

looped back to the network at the H4TU-C and DS1 signal from the customer is looped back to the customer at the H4TU-C.

looped back to the network at the H4TU-R and DS1 signal from the customer is looped back to the customer at the H4TU-R.

SmartJack Loopup or NID payload (PL) code. Invokes H4TU-R loopback towards network.

SmartJack Loopup or NID (ESF-DL) code. Invokes H4TU-R loopback towards network.

SmartJack Loopdown or NID payload (PL) code. Removes SMJK, NLOC, NREM, CLOC, and CREM.

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

X X X

H4TU-C-319 List 1 September 12, 2003 51

Testing LTPH-UM-1031-03, Issue 3

To perform the GNLB loopback test procedure: 1 Have the CO tester send the NREM (3-in -7) inband loop up code for 5 seconds. You should observe the

NREM message on the front-panel display. (The Status LED on the front panel should be green, and the loopback mode should also be identified on the Monitor screen.)

2 Have the CO tester transmit a DS1 test signal towards the H4TU-C and verify that the returned (looped) signal

to the test set is error-free.

3 If step 2 fails, have the CO tester transmit the (3-in-5) inband loopd own code. 4 Have the CO tester send the NLOC (4-in -7 ) inb and loopup for 5 seconds. You should observe the NLOC

message on the front-panel display. (The Status LED on the front panel should be yellow, and the loop back mode should also be identified on the Monitor screen.)

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

upstream direction.

A3LB Test Procedure

The H4TU-C-319 can be looped back by sending the Addressable Office Repeater (AOR) LPBK activation code 1111-1111-0001-1110 (FF1E) for at least 5 seconds. This causes the H4TU-C to enter the NLOC state. The Loopback Time-Out setting (see “Setting the Loopback Time-Out Opti on (LBTO) ” on page 48) determines the duration of this loopback unless it is overridden by the reception of a second identical 16-bit loopup command before the timer expires. When this time-out override state exists, the only way to loop the H4TU-C down is to issue one of the three loopdown commands listed in Table 17. The automatic time-out mode is restored dur ing subsequent loopback sessions.

Table 17 summarizes the codes required to execute an A3LB Addressable Repeater Loopback command. All code

sequences must be present for at least 5 seconds.

Table 17. A3LB Addressable Repeater Loopback Commands

Name Binary Code

NLOC 1111-1111-0001-1110 (FF1E) H4TU-C loopup from NI.

CREM 0011-1111-0001-1110 (3F1E) H4TU-C loopup from CI.

NREM 1111-1111-0000-0010 (FF02) H4TU-R loopup from NI.

NDU1 1111-1111-0000-0100 (FF04) Signal is looped back to the network at H4D1.

CDU1 0011-1111-0000-0100 (3F04) DS1 signal from customer is looped back to the customer at H4D1.

NDU2 1111-1111-0000-0110 (FF06) Signal is looped back to the network at H4D2.

CDU2 0011-1111-0000-0110 (3F06) DS1 signal from customer is looped back tot he customer at H4D2.

D1LB Dual loopback at H4D1.

D2LB Dual loopback at H4D2.

CLOC 0011-1111-0000-0010 (3F02) H4TU-R loopup from CI.

SMJK 11000-11000-11000 ... H4TU-R loopup from NI.

SMJK 100000 100000 100000 ... H4TU-R loopup from NI.

SMJK 1111-1111-0100-1000 (FF48) H4TU-R loopup from NI (ESF-DL).

Loopdown 11100-11100-11100 ... H4TU-C and H4TU-R loopdown from NI OR CI.

Loopdown 100-100-100 ... H4TU-C and H4TU-R loopdown from NI OR CI.

Loopdown 1111-1111-0010-0100 (FF24) H4TU-C and H4TU-R loopdown from NI OR CI (ESF-DL).

(a) The leftmost bit arrives first in all sequences. The detection algorithm functions reliably with a random 10-3 Bit Error Ratio

(BER) on the facility. The entire arming and loopback sequence can also be initiated at the remote H4TU-R location.

(a)

(Hexadecimal Equivalent)

Description

52 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

A5LB Test Procedure

Using the codes listed in Table 18, a network tester can activate NLOC or NREM loopbacks (or SMJK, if enabled). A tester at the customer premises can activate CLOC or CREM loopbacks.

Table 18. A5LB Addressable Repeater Loopback Commands

Name Binary Code

(a)

(Hexadecimal Equivalent)

Description

ARMING or NI LPBK (inband) 11000-11000 ... Arming code

ARMING or NI LPBK (ESF Data Link) 1111-1111-0100-1000 (FF48) Arming code

IR LPDN or DISARM (inband) 11100-11100 ... Disarming code

IR LPDN or DISARM (ESF Data Link) 1111-1111-0010-0100 (FF24) Disarming code

IOR LPBK (NLOC or CREM) 230-232 bit errors 229-231 bit errors

(b)

ILR-1 LPBK

1101-0011-1101-0011 (D3D3) H4TU-C loopup

1100-0111-0100-0001 (C741) Doubler-1 loopup

(NDU1 and CDU1 10 bit errors)

ILR-20 LPBK

1100-0111-0101-0100 (C754) Doubler-2 loopup

(NDU2 and CDU2 200 bit errors)

ILR-2 LPBK

1100-0111-0100-0010 (C742) H4TU-R loopup

(NREM and CLOC 20 bit errors)

ILR-2 LPBK (NREM or CLOC) 20 bit errors

(c)

NREM—DSX-1 signal is looped back to the network at the H4TU-R.

1100-0111-0100-0010 (C742)

CLOC—DS1 signal from customer is looped back to the customer at the H4TU-R.

IR LPDN 1001-0011-1001-0011 (9393) Loopdown (H4TU-C or H4TU-R)

IR QUERY LPBK 1101-0101-1101-0101 (D5D5) Query loopback

IR ALTERNATE QUERY LPBK 1101-0101-1110-1010 (D5EA) Alternate query loopback

TIME-OUT OVERRIDE 1101-0101-1101-0110 (D5D6) Loopback time-out override

IOR POWER DOWN (H4TU-C)

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

The entire arming and loopback sequence can also be initiated at the remote H4TU-R location.

(b) The H4TU-R identifies CREM (and the H4TU-C identifies NLOC) with 231 bit errors, including the frame bits. When framed

data is being sent in the Auto framing mode, the number of the 231 bit errors detected by the test set varies from 229 to 231, depending on whether or not the test set counts frame errors as bit errors, and on the number of frame bits contained in the block of 231 error bits. The H4TU-R and H4TU-C generate this bit pattern in a series of discontinuous bursts containing 20-bit errors each, including frame bits. Those test sets that do not count frame error bits as data bit errors will indicate fewer bits

than the H4TU-R and H4TU-C transmit for a CI and NI loopback. (c) The H4TU-R is assigned the ILR-2 loopback code. It responds with 20 bit errors (excluding the frame bits). (d) The IOR Power Down code must remain present for the duration of the power down mode. When this code is removed, the

system returns to its normal unlooped and unarmed state.

(d)

0110-0111-0110-0111 (6767) Removes HDSL4 line power

H4TU-C-319 List 1 September 12, 2003 53

Testing LTPH-UM-1031-03, Issue 3

To perform the A5LB test procedures:

1 Send the inband Arming and NI LPBK code 11 000 to the H4TU-C for at least 5 seconds. 2 Monitor the output of the H4TU-C for the return of the pattern. Return of the pattern indicates one of the

following:

• The H4TU-R has looped up (if the SMJK Loopback option is enabled).

• An external NID has looped up (if the SMJK Loopback option is disabled), and the H4TU-C and

H4TU-R have been armed.

3 Verify, if possi ble, that the H4TU-R Loopback LED is either flashing yellow at four times per second

(indicating that the system is armed), or is a steady yellow (indicating that it is both armed and in SMJK loopback). The H4TU-C Status LED also flashes yellow when the system is armed.

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

4 Once armed, the H4TU-C can be looped back by sending Intelligent Office Repeater (IOR) LPBK activation

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

• 2 seconds of AIS (all ones pattern)

• 2 seconds of returning data pattern

• 231 logic errors (including the frame bit) occurring in the returned pattern comprising:

— 10 errors, if ILR-1 (Doubler 1) was sent — 200 errors, if ILR-20 (Doubler 2) was sent — 20 errors, if ILR-2 (H4TU-R) was sent

• Normal looped data

This error pattern repeats every 20 seconds as long as the IOR loopback pattern is being sent. This also applies to ILR, Time-Out Override, and Query commands.

Some Intelligent Repeater (IR) test sets do not count frame errors as bit errors when the test pattern is framed and the H4TU-C-319 is set to the Auto framing mode. To improve compatibility with those test sets, the H4TU-C generates 231 (NLOC and CREM) ID bit errors. As a result, the H4TU-C may indicate one more or one less bit error, depending on the test set type and the number of frame bits contained in the block of errored bits. To avoid this uncertainty, ADC recommends sending unframed IR commands.

The H4TU-C is now in logic loopback if the IOR NLOC loopback command was sent. The Time-Out Override command or a Loopdown command can override the selection made for the loopback time-out (see

“Setting the Loopback Time-Out Option (LBTO)” on page 48). If the Time-Out Override code

1101-0101-1101-0110 (D5D6) is received after activating a loopback, then the automatic timed expiration of the loopback is inhibited. If this Time-Out Override is sent, then the only way to loop the H4TU-C down is to do one of the following:

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

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

54 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Testing

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

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

• If the system is to loopdown but remain armed, send the IR (Intelligent Repeater) LPDN code (universal loopdown).

• If all the equipment is to be looped down, disarmed and returned to normal operation, send the disarm inband code 11100 or the ESF-DL code (FF24).

The Armed mode has an automatic time-out of 120 minutes, but this timer is reset to 120 for any of the following events:

• Loopback terminates (manually or time-out)

•Query

• Alternate query

• Far End activate

• Another ARM command

This timer is inhibited while any of the valid command codes are being sent. Once the codes are removed, the timer restarts at 120.

H4TU-C-319 List 1 September 12, 2003 55

Testing LTPH-UM-1031-03, Issue 3

TESTING WITH H4TU-C BERT GENERATOR

The H4TU-C BERT Generator screen allows transmission of an unframed test signal from the H4TU-C toward either the CI or the network.

It is not recommended using the Bit Error Rate Tester from the remote and line unit at the same time.

1 Press to select the Config menu (Figure 30). 2 Use the and arrow keys to select BERT Generator, then press . 3 Use the arrow keys to select an option and press the to cycle through th e setting s. Refer to

↑ ↓

ENTER

SPACEBAR

Table 19 for a list of BERT generator option settings.

4 Press to activate your choice. 5 To view BERT status, press twice, then use the arrow key to select the Monitor menu. 6 Press . You can exit the status screen while signal generation is active.

ENTER

ESC

ENTER

onitor Performance Event Log C onfig Inventory Report Rlogon Help

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

| Standard Options -> | | ADC Options -> |

BERT Generator -> |

←

Use <Spacebar> to cycle through option settings and <Enter> to activate ID: xxxx—-xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-C System: OK___

Figure 30. H4TU-C BERT Generator Screen

Table 19. BERT Signal Generator Option Settings

Option Description

BERT Signal Generator Enabled (ENA) or Disabled (DIS)

BERT Signal Pattern 1-in-8 pattern, 2-in-8 pattern, 3-in-24 pattern, 2

20-1

pseudo random, 2

15-1

pseudo random

BERT Signal Linecode AMI or B8ZS

BERT Signal Direction Toward CPE or toward NET

BERT Interval 5 minutes, 60 minutes, Continuous (default)

56 September 12, 2003 H4TU-C-319 List 1

23-1

pseudo random,

LTPH-UM-1031-03, Issue 3 Testing

TESTING WITH H4TU-R BERT GENERATOR

The H4TU-R BERT Generator screen allows transmission of an unframed test signal from the H4TU-R towards either the network (NET) or customer (CPE). Bit error rates are calculated and display on the Monitor screen.

1 Press to logon remotely , then press to select the Config menu (Figure 31). 2 Use the and arrow keys to select BERT Generator, then press . 3 Use the arrow keys to select an option, then press the to cycle through the settings. Refer to

R C

↑ ↓

ENTER

SPACEBAR

Table 19 on page 56 for a list of BERT Generator option settings.

4 Press to activate your choice. 5 To view BERT status, press twice, then, using the arrow key to select the Monitor menu, press

6 Press to return to the H4TU-C logon screen. You can exit the status screen while signal generation is active.

ENTER

ESC

ENTER

onitor Performance Event Log C onfig Inventory Report Rlogon Help

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

| Standard Options -> | | ADC Options -> |

BERT Generator -> |

←

Use <Spacebar> to cycle through option settings and <Enter> to activate ID: xxxx—-xxxx—-xxxx--xxxx 02/01/2002 12:30:01 H4TU-R System: OK___

Figure 31. H4TU-R BERT Generator Screen

The test pattern is sent out either from the line unit towards the network (toward NET) or from the remote unit towards the customer (toward CPE). Both test payloads must be looped back so they can be returned to the unit for BER detection. BER detection is performed in the line unit for both switch settings.

Tests done towards the NET must be looped at some point external to the higher circuit. Tests done towards the CPE can either be looped back at some external point beyond the remote unit, or they can be looped back internally by a higher loopback, such as NREM. The test payload, for the CPE direction, also passes back and forth over the HDSL4 link to the H4TU-C before it is analyzed for errors.

H4TU-C-319 List 1 September 12, 2003 57

Appendix A - Specifications LTPH-UM-1031-03, Issue 3

APPENDIX A - SPECIFICATIONS

Power

Line Voltage 0, -185 Vdc, ±123 Vdc (Voltage is applied across Loop 1 and Loop 2.)

CO Supply -48 Vdc nominal (-42.5 Vdc to -56.5 Vdc)

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

Current Drain” on page 61.

Electrical Protection Secondary surge and power cross-protection on HDSL4 ports. Requires external

primary protection.

Fusing Internal; connected to fuse alarm output on pin 10

Environmental

Operating Temperature -40°F to +149°F (-40°C to +65°C)

Operating Humidity 5% to 95% (non-condensing)

Physical

Height 4.750 in. (12.10 cm)

Width 0.625 in. (1.59 cm)

Depth 10 in. (25.4 cm)

Weight 0.5 lb. (0.23 kg)

Mounting 3192 high-density mechanics shelf

HDSL4

Line Code 784 kbps Overlapped Pulse Amplitude Modulation (OPAM) transmission per pair per

HDSL4 standard in ANSI T1.418 Issue 2

Transmission Full duplex

CSA Reach 34 kft. maximum using 26 AWG wire: 12kft. (span 1), 11 kft. (span 2), 11 kft. (span 3)

Media One non-loaded, copper, four-wire cable pair Output +14.1 dBm ±0.5 dBm at 135Ω Line Impedance 135Ω

Maximum Insertion Loss Span 1 = 47 dB at 196 kHz

Maximum Loop Attenuation Span 1 = 31 dB

Start-Up Time 30 sec. (typical), 1 min. (maximum)

DSX-1

Line Impedance 100Ω

Line Rate 1.544 Mbps ±200 bps

Line Format Alternate Mark Inversion (AMI) or Bipolar with 8-Zero Substitution (B8ZS)

Frame Format Extended SuperFrame (ESF), SuperFrame (SF), or Unframed (UNFR)

Pulse Output 6 V

Input Level +1.5 to -7.5 dB DSX

Span 2 and Span 3 = 43 dB at 196 kHz

Span 2 and Span 3 = 29 dB

pk-pk

pre-equalized for 0 to 655 feet of ABAM cable

58 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix A - Specifications

System

One-way DS1 Delay <700 µs

Wander (Looped) Meets MTIE T1.101 requirements

Wideband Jitter (Looped) 0.2 UI maximum

Narrowband Jitter (Looped) 0.1 UI maximum

H4TU-C-319 List 1 September 12, 2003 59

Appendix A - Specifications LTPH-UM-1031-03, Issue 3

POWER CONSUMPTION

The three most important power parameters of an H4TU-C are its maximum power consumption, maximum power dissipation, and maximum current drain.

Table 20 describes line-powered and locally powered (remote) circuits on the maximum reach condition (34 kft.)

using 26 AWG wire.

Table 20. H4TU-C Power Parameters

-48 Vdc Power Consumption (Watts)

Number of Doublers

None Locally powered 7.6 8.4 5.9 6.4 179 197

None Line-powered 11.0 12.1 6.2 6.8 259 285

1 Locally powered 14.6 16.1 6.6 7.2 344 378

1 Line-powered 20.0 22.0 7.1 7.8 471 518

2 Locally powered 26.7 29.4 8.4 9.2 628 691

2 Line-powered 32.9 36.2 9.3 10.3 774 852

Remote Power Source

Typical Maximum Typical Maximum Typical Maximum

Heat Dissipation (Watts) -42.5 Vdc Current (mA)

MAXIMUM POWER DISSIPATION

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

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

134.7 watts per square foot per GR-63-CORE. Use this limit and the parameters in Table 21 on page 61 to determine the maximum number of H4TU-C circuits that can occupy one CO bay.

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

The thermal loading limitations imposed when using the H4TU-C in a Controlled Environmental Vault (CEV) or other enclosures are determined by applying its power parameters to the manufacturer's requirements for each specific housing.

The -48 Vdc power consumption is the maximum total power that the H4TU-C consumes or draws from the shelf power source. This parameter is needed when the H4TU-C is in a location remote to the CO it is serving. It determines the battery capacity required to maintain an 8-hour, standby battery reserve for emergency situations. Battery capacity, therefore, limits the maximum number of line units which can be installed in a remote enclosure. Use the data in Table 21 to perform this analysis.

60 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix A - Specifications

MAXIMUM CURRENT DRAIN

The maximum current drain is the maximum current drawn from the shelf power supply when it is at its minimum voltage (-42.5

Vdc). This determines the shelf fusing requirements. Use the -42.5 Vdc current data in Table 21 to

determine the shelf fusing requirements for your particular H4TU-C applications.

LOOP ATTENUATION, INSERTION LOSS, AND REACH

For Span 1, each loop has no more than 47 dB of insertion loss at 196 kHz, with driving and terminating impedances of 135Ω, as shown in Table 21 below. This is equivalent to no more than 34 dB loop attenuation.

For Span 2 and Span 3, each loop has no more than 43 dB of insertion loss at 196 kHz, with driving and terminating impedances of 135Ω. This is equivalent to no more than 31 dB loop attenuation.

Table 21. HDSL4 Reach Chart

Cable Gauge

26/0.4 mm 3.88 2.8 12 11.0 83

24/0.51 mm 2.84 2.0 16 15.0 52

22/0.61 mm 2.18 1.6 21 20.6 32

19/0.91 mm 1.54 1.1 29 27.8 16

(a) Insertion Loss = 1.38 times loop attenuation

Insertion Loss

196 kHz (dB/kft)

(a)

Loop Attenuation

(dB/kft)

Maximum Reach (kft)

Span 1

Maximum Reach (kft)

Span 2 and Span 3

Ω per kft

H4TU-C-319 List 1 September 12, 2003 61

Appendix A - Specifications LTPH-UM-1031-03, Issue 3

H4TU-C-319 CARD-EDGE CONNECTOR

Figure 32 shows the card-edge connectors on the H4TU-C-319. Active pins are highlighted in black.

(IN)DSX-1Tip

(OUT)DSX-1Tip1

HDSL4-L1Tip

SystemAlarm** ManagementBus**

Frame GND

HDSL4-L2Tip

(Donotuse)

Fuse Alarm

Normal = Floating (0 to -60 Vdc maximum) Activated = -48Vdc (10 mA maximum)

System Alarm and Management Bus (reserved)

C D

GND

HDSL4-L1 Ring

-48 Vdc

HDSL4-L2 Ring

Fuse Alarm*

Figure 32. H4TU-C-319 Card-Edge Connector

DSX-1Ring(IN)

DSX-1Ring1 (OUT)

Network Management Control Bus

The H4TU-C provides a Network Management Control Bus on pin 7 of the card-edge connector. This allows the various Management System protocols to manage the H4TU-C through the HMU-319. Whenever the H4TU-C is under management, the MNGD message displays periodically on the front-panel display.

Some H4TU-C-319 features are affected when it is under management. Consult the management unit practice for further information (see “Appendix D - Product Support” on page 66).

Fuse Alarm

Pin 10 on the card-edge connector is a Fuse Alarm that is driven to -48 Vdc whenever its onboard fuse opens. It emulates the function of the Fuse Alarm output from pin 10 on normal, high-density (HD) repeaters. Pin 10 is connected to pin 5 of the 1184 Alarm Card (slot 1 in the HD shelf) and causes the 1184 Fuse ALM LED to light when the pin 10 signal is activated. Its normally floating output must never be driven above ground or below

-80 V. It can sink a current of 10 mA. The H4TU-C does not support the BPV function (Pin E) of normal HD repeaters.

62 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix A - Specifications

System Alarm Output Pin

Pin H on the card-edge connector (see Figure 33 on page 63) is the H4TU-C-319 System Alarm output pin. The following notes apply to Pin H:

• Pin H replaces the Local Loss of Signal (LLOS) on normal high-density (3192) repeaters.

• The normally floating output of Pin H can connect to pin 1 of the 1184 or 3192-9F Alarm Card in position 29

of the High Density (HD) shelf.

• The H4TU-C forces pin H to +5Vdc (maximum of 10 mA) for a system alarm condition. Pin H then remains at +5 Vdc for the duration of the alarm condition.

• If the Wescom 1184 Alarm Card is installed in the shelf, its LOS LED lights for every minor alarm (MNRALM).

• The H4TU-C Status LED flashes red for the duration of a system alarm condition.

• Setting the ALM option to DIS only prevents the system alarm bus on Pin H from being activated for a system

alarm event. The Status LED still flashes red and the ALRM message still displays.

Pin H must never be taken above +5 Vdc or below -60 Vdc.

CRAFT PORT

Figure 33 shows the pinout for the craft port connection and its connection to a DB-9 or DB-25 connector on a

maintenance terminal.

Terminal

DB-9 Connector

(DTE)

H4TU-C-319

DB-9 Connector

(DCE)

2 3 5

TD (Transmit Data)

RD (Receive Data)

GND

3 5

Terminal

DB-25 Connector

(DTE)

3 2 7

Figure 33. RS-232 Craft Port Pinouts

H4TU-C-319 List 1 September 12, 2003 63

Appendix B - Functional Operation LTPH-UM-1031-03, Issue 3

APPENDIX B - FUNCTIONAL OPERATION

HDSL4 technology provides full-duplex services at standard T1 rates over two pairs of copper wire between an H4TU-C, H4Ds (if necessary), and an H4TU-R which comprise one ADC sy stem. ADC systems use Overlapped Pulse Amplitude Modulation Transmission (OPAM) transceiver systems to establish two, full-duplex, 784 kbps data channels between the H4TU-C-319 and a remotely located H4TU-R.

A block diagram of the H4TU-C-319 is shown in Figure 34. The H4TU-C-319 receives a 1.544 Mbps DSX-1 data stream from the DSX-1 digital cross-connect interface. The H4TU-C-319 contains a DS1 frame synchronizer controlled by an 8-bit microprocessor that determines the type of framing on the DS1 stream and synchronizes with it. The H4TU-C-319 recognizes Superframe (SF), including D4, or Extended Superframe (ESF) framing. When the data is unframed, the H4TU-C-319 arbitrarily defines a frame bit.

Tip

BRG

LINE

XMT

HDSL XCVR

Power

Supply

Pre-equalizer

Select

Framer

DEMUX

MODE SEL (ACO)

Microprocessor

MUX

-185 Vdcor +/-123Vdc

PowerSupply

(GroundIsolated

andGroundFaultDetect)

HDSL XCVR

Tip

HDSL4-L1

Ring

Tip

HDSL4-L

Ring

DSX-1

Ring

Fuse

Alarm

BAT8

GND5

NetworkManagement

FrameGND J

SystemAlarm

LINE

BRG

SX-1

Tip

Ring

RCV

Status

RS-232

Figure 34. H4TU-C-319 List 1 Block Diagram

TIMING

The low-loop wander (0.5 UI max) of an H4TU-C, when used with remote units, allows the circuit to be used in all critical timing applications, including those used to transport Stratum 1 timing.

GROUND FAULT DETECTION

The H4TU-C has a Ground Fault Detection (GFD) circuit which detects a ground or a resistive path to ground on any wire of the HDSL4 loop. This makes the product compliant with the Class A2 requirements of GR-1089.

SPECTRUM ISSUES

The asymmetric 776 kbps spectrum, defined in ANSI T1.418 Issue 2, allows the HDSL4 product to be spectrally compatible with ADSL services in adjacent pairs in the same binding groups for all non-doubler applications. A combination of asymmetric and symmetric spectrums is used for ADSL compatibility in doubler applications.

64 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix C - Compatibility

APPENDIX C - COMPATIBILITY

The HDSL4 system uses HDSL4 transmission technology as recommended by ANSI committee in compliance with the August 1999 T1-E1.4/99-006R5 HDSL4 standards.

The H4TU-C List 1 is designed to mount in the following shelves with 3192 mechanics:

• HMS-317 (28-slot, 23-inch shelf)

• HMS-318 (22-slot, 19-inch shelf)

• HMS-357 (28-slot, 23-inch shelf)

• HMS-358 (28-slot, 23-inch shelf)

• HHS-319 (3-slot, 19-inch horizontal shelf)

• HCS-402 (2-slot) with a 150-1192-01 adaptor

• HMS-308 (8-slot remote enclosure)

• Charles Ind. #3192 (28-slot connectorized)

• Charles Ind. #3192-WR (28-slot wire wrap)

• Charles Ind. #343-00 (12- to 14-slot wire wrap)

• Charles Ind. #319-02 (22-slot connectorized)

• Charles Ind. #319-04 (22-slot wire wrap)

• Charles Ind. #340-00 (9-slot to 11-slot wire wrap)

• Larus #1185 (28-slot connectorized)

Charles Ind. 343-00 and 340-00 shelves do not support the H4TU-C-319 System Alarm output on pin H. Also, if slots 1 and 2 of these shelves were wired for the 3408 Fault Locate unit, they must be rewired to accept the H4TU-C-319.

H4TU-C-319 List 1 September 12, 2003 65

Appendix D - Product Support LTPH-UM-1031-03, Issue 3

APPENDIX D - PRODUCT SUPPORT

ADC Customer Service Group provides expert pre-sales and post-sales support and training for all its products. Technical support is available 24 hours a day, 7 days a week by contacting the ADC Technical Assistance Center.

Sales Assistance

800.366.3891

Systems Integration

800.366.3891

ADC Technical Assistance Center

800.638.0031 Email: wsd_support@adc.com

Online Technical Support

Online Technical Publications

Product Return Department

800.366.3891 Email: rma@adc.com

• Quotation Proposals

• Ordering and Delivery

• General Product Information

• Complete Solutions (from concept to

installation)

• Network Design and Integration Testing

• System Turn-Up and Testing

• Network Monitoring (upstream or downstream)

• Power Monitoring and Remote Surveillance

• Service/Maintenance Agreements

• Systems Operation

• Technical Information

• System/Network Configuration

• Product Specification and Application

• Training (product-specific)

• Installation and Operation Assistance

• Troubleshooting and Repair/Field Assistance

• www.adc.com/Knowledge_Base/index.jsp

• www.adc.com/documentationlibrary/technicalpu

blications/

• ADC Return Material Authorization (RMA) number and instructions must be obtained before returning products.

All telephone numbers with an 800 prefix are tool-free in the USA and Canada.

66 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix E - Abbreviations

APPENDIX E - ABBREVIATIONS

ACO: Alarm Cutoff ADSL: Asymmetyric Digital Subscriber Line AIS: Alarm Indication Signal ALM: Alarm ALMP: Alarm Pattern AMI: Alternate Mark Inversion AOR: Addressable Office Repeater ARM: Armed ASCII: American Standard Code for Information Interchange AWG: American Wire Gauge

B8ZS: Bipolar with 8-Zero Substitution BER: Bit Error Rate BERT: Bit Error Rate Tester BPV: Bipolar Violation BPVT: Bipolar Violation Transparency BRG: Bridge

DBER: DS1 Bit Error Rate DDS: Digital Data Service DL: Data Link DLC: Digital Loop Carrier DS1: Digital Signal, Level 1 DSX-1: Digital Signal Cross-Connect, Level 1

ECI: Equipment Catalog Item EQL: Equalization ESD: Electrostatic Discharge ESF: Extended SuperFrame ES-L: Errored Seconds - Line ES-P: Errored Seconds - Path

FE: Far End FRMG: Framing

CEV: Controlled Environmental Vault CI: Customer Installation CLEI: Common Language Equipment Identifier CLOC: Customer Local Loopback CO: Central Office COLB: Central Office Loopback CPE: Customer Premises Equipment CRC: Cyclical Redundancy Check CREM: Customer Remote Loopback CSA: Carrier Service Area CV: Code Violation CV-L: Code Violation - Line CV-P: Code Violation - Path

H4TU-C: HDSL4 Line Unit H4TU-R: HDSL4 Remote Unit HBER: HDSL4 Block Error Rate HCDS: High Capacity Digital Service HDSL: High-bit-rate Digital Subscriber Line HG: HDSL Generic HMU: HiGain Management Unit

ID: Identification ILR: Intelligent Repeater Loop IN: Transmit INSL: Insertion Loss IOR: Intelligent Office Repeater

H4TU-C-319 List 1 September 12, 2003 67

Appendix E - Abbreviations LTPH-UM-1031-03, Issue 3

LA: Loop Attenutation LAIS: Line Alarm Indication Signal LATT: Loop Attenuation LBPV: Local Bipolar Violation LBTO: Loopback Timeout LED: Light Emitting Diode LLOS: Line (Unit) Loss of Signal LOF: Loss of Frame LOSW: Loss of Sync Word LPDN: Loopdown LPF: Line Power Feed LRAI: Line (Clear) Remote Alarm Indication

M: HDSL4 Margin MAL: Margin Alarm MARG: Margin MNGD: Managed MSEC: Monitored Seconds

PRM: Performance Report Messaging PRM-FE: Performance Report Messaging - Far End PRM-NE: Performance Report Messaging - Near End PWRF: Power Feed

RAI: Remote Alarm Indication RAI-CI: Remote Alarm Indication - Customer Installation RAIS: Remote Alarm Indication Signal RDA: Remote Disconnect Alarm RLOS: Remote (Unit) Loss of Signal RRAI: Remote RAI RTPV: Remote Provisioning RULB: Remote Unit Loopback

S/N: Signal-to-Noise Ratio SDSL: Symmetrical Digital Subscriber Line SES: Severely Errored Seconds SES-L: Severely Errored Seconds - Line SES-P: Severely Errored Seconds - Path

NE: Near End NI: Network Interface NID: Network Interface Device NLBP: Network Loopback Pattern NLOC: Network Local Loopback NMA: Network Management and Administration NREM: Network Remote Loopback

OPAM: Overlapped Pulse Amplitude Modulation OUT: Receive

PBOC: Power Back Off - Customer PBON: Power Back Off - Network PL: Payload

SF: SuperFrame SMJK: SmartJack

TLOS: Transmit Loss of Signal

UAS : Unavailable Seconds UAS-L: Unavailable Seconds - Line UAS-P: Unavailable Seconds - Path UNFR: Unframed

POTS: Plain Old Telephone Service

68 September 12, 2003 H4TU-C-319 List 1

LTPH-UM-1031-03, Issue 3 Appendix E - Abbreviations

H4TU-C-319 List 1 September 12, 2003 69

CERTIFICATION AND WARRANTY

FCC CLASS A COMPLIANCE

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency ener gy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

LIMITED WARRANTY

ADC DSL Systems, Incorporated (“ADC”) warrants that, for a period of sixty (60) months from the date of shipment, the hardware portion of its products will be free of material defects and faulty workmanship under normal use. ADC's obligation, under this warranty, is limited to replacing or repairing, at ADC's option, any such hardware product which is returned during the 60-m onth warranty period per ADC's instructions and which product is confirmed by ADC not to comply with the foregoing warranty.

ADC warrants that, for a period of 90 days from the date of purchase, the software furnished with its products will operate substantially in accordance with the ADC published specifications and documentation for such software. ADC’s entire liability for software that does not comply with the foregoing warranty and is reported to ADC during the 90-day warranty period is, at ADC’s option, either (a) return of the price paid or (b) repair or replace of the software. ADC also warrants that, for a period of thirty (30) days from the date of purchase, the media on which software is stored will be free from material defects under normal use. ADC will replace defective media at no charge if it is returned to ADC during the 30-day warranty period along with proof of the date of shipment.

The transportation charges for shipment of returned products to ADC will be prepaid by the Buyer. ADC will pay transportation charges for shipment of replacement products to Buyer, unless no trouble is found (NTF), in which case the Buyer will pay transportation charges.

ADC may use reconditioned parts for such repair or replacement. This warranty does not apply to any product which has been repaired, worked upon, or altered by persons not authorized by ADC or in ADC's sole judgment has been subjected to misuse, accident, fire or other casualty, or operation beyond its design range.

Repaired products have a 90-day warranty, or until the end of the original warranty period—whichever period is greater. ADC DISCLAIMS ALL OTHER WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WITH RESPECT TO ITS PRODUCTS AND ANY ACCOMPANYING WRITTEN MATERIALS. FURTHER, ADC DOES NOT WARRANT THAT SOFTWARE WILL BE FREE FROM BUGS OR THAT ITS USE WILL BE UNINTERRUPTED OR REGARDING THE USE, OR THE RESULTS OF THE USE, OF THE SOFTWARE IN TERMS OF CORRECT NESS, ACCURACY, RELIABILITY OR OTHERWISE.

MODIFICATIONS

Any changes or modifications made to this device that are not expressly approved by ADC DSL Systems, Inc. voids the user's warranty. All wiring external to the products should follow the provisions of the current edition of the National Electrical Code.

SAFETY STANDARDS COMPLIANCE

The H4TU-C-319 List 1 has been tested and verified to comply with the applicable sections of the following safety standards:

• GR 63-CORE - Network Equipment-Building System (NEBS) Requirements

• GR 1089-CORE - Electromagnetic Compatibility and Electrical Safety

• Binational standard, UL-60950/CSA-C22.2 No. 60950-00: Safety of Information Technology Equipment

For technical assistance, refer to “Appendix D - Product Support” on page 66.

World Headquarters

ADC Telecommunications, Inc. PO Box 1101

Minneapolis, Minnesota USA 55440-1101

For Technical Assistance

Tel: 800.366.3891

ISO9001/TL9000

DNV Certificat ion, Inc.

REGISTERED FIRM

DOCUMENT: LTPH-UM-1031-03, ISSUE 3

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1274229

ADC H4TU-C-319, HDSL4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

LTPH-UM-1031-03, Issue 3 Table of Contents

LTPH-UM-1031-03, Issue 3 List of Figures

List of Tables LTPH-UM-1031-03, Issue 3

OVERVIEW

FEATURES

APPLICATIONS

FRONT PANEL

INSTALLATION

VERIFICATION

Verification without a Downstream Device

Verification with a Downstream Device

PROVISIONING

USING THE MODE AND SEL PUSHBUTTONS

Setting Options through MODE and SEL

Resetting to Factory Default

Displaying System Parameter Settings

Disabling an Alarm

Loopback Modes

USING A MAINTENANCE TERMINAL

Connecting to a Maintenance Terminal

Logon Screen

PROVISIONING TASKS

Setting Date and Time

Setting Circuit ID Numbers

Configuring the System

Clearing the History, Alarm, and Event Log Screens

LTPH-UM-1031-03, Issue 3 Monitoring System Activity and Performance

SYSTEM OVERVIEW

USING THE MONITOR SCREEN TO VIEW SYSTEM ACTIVITY

USING THE PERFORMANCE SCREENS TO VIEW PERFORMANCE DATA

Performance History at the DS1 Interface

Performance History at the HDSL4 Interface

USING THE PERFORMANCE SCREENS TO VIEW ALARM DATA

Alarm History at the DS1 Interface

Alarm History at the HDSL4 Interface

USING THE EVENT LOG TO TRACK SYSTEM EVENTS

USING THE REPORT MENU

TESTING

SYSTEM ALARMS

Alarm Option for DLC Feed

Retiring System Alarms

Remote LOS and AIS Response

OCT55 TEST PATTERN WITH AMI LINE CODE

LOOPBACK OPERATION

Generic Loopback Commands

Special Loopback Commands

Manual Loopback Session

LOOPBACK TEST PROCEDURES

General Troubleshooting Tips

GNLB Test Procedures

A3LB Test Procedure

A5LB Test Procedure

TESTING WITH H4TU-C BERT GENERATOR

TESTING WITH H4TU-R BERT GENERATOR

APPENDIX A - SPECIFICATIONS

POWER CONSUMPTION

MAXIMUM POWER DISSIPATION

MAXIMUM CURRENT DRAIN

LOOP ATTENUATION, INSERTION LOSS, AND REACH

Fuse Alarm

Figure 32. H4TU-C-319 Card-Edge Connector

Network Management Control Bus

System Alarm Output Pin

CRAFT PORT

Appendix B - Functional Operation LTPH-UM-1031-03, Issue 3

TIMING

GROUND FAULT DETECTION

SPECTRUM ISSUES

APPENDIX C - COMPATIBILITY

Appendix D - Product Support LTPH-UM-1031-03, Issue 3

APPENDIX E - ABBREVIATIONS

CERTIFICATION AND WARRANTY