HST_G-SHDSL_manual_Rev B.pdf

Acterna HST-3000G.SHDSL Testing

User’s Guide

Notice Every effort was made to ensure that the information in this document was accurate at the time of printing. However, infor-mation is subject to change without notice, and Acterna reserves the right to provide an addendum to this document with information not available at the time that this document was created.

Copyright © Copyright 2005 Acterna, LLC. All rights reserved. Acterna, Communications Test and Management Solutions, and its logo are trademarks of Acterna, LLC. All other trademarks and registered trademarks are the property of their respective owners. No part of this guide may be reproduced or trans-mitted electronically or otherwise without written permission of the publisher.

Trademarks Acterna and HST-3000, are trademarks or registered trade-marks of Acterna in the United States and/or other countries.

GoDigital is a trademark or registered trademark of GoDigital Networks in the United States and/or other countries

Specifications, terms, and conditions are subject to change without notice. All trademarks and registered trademarks are the property of their respective companies.

Orderinginformation

This guide is a product of Acterna's Technical Information Development Department, issued as part of the HST-3000. The order number for a printed guide is ML-060701. The order number for a CD-ROM containing all HST-3000 user docu-mentation is CML-060301.

FederalCommunications

Commission (FCC)Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential instal-lation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance

ii HST-3000 G.SHDSL Testing User’s Guide Revision B

with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interfer-ence will not occur in a particular installation.

This device complies with Part 15 of the FCC Rules. Opera-tion is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

– Reorient or relocate the receiving antenna.– Increase the separation between the equipment and

receiver.– Connect the equipment into an outlet on a circuit different

from that to which the receiver is connected.– Consult the dealer or an experienced radio/TV technician

for help.

In order to maintain compliance with the limits of a Class B digital device Acterna requires that quality interface cables be used when connecting to this equipment. Any changes or modifications not expressly approved by Acterna could void the user's authority to operate the equipment.

Industry CanadaRequirements

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

HST-3000 G.SHDSL Testing User’s Guide Revision B iii

iv HST-3000 G.SHDSL Testing User’s Guide Revision B

Contents

About This Guide ixPurpose and scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xAssumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xTerminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xApplication-oriented user guide . . . . . . . . . . . . . . . . . . . xiHST-3000 Base Unit User’s Guide . . . . . . . . . . . . . . . . . . xiSafety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiTechnical assistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiiConventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii

Chapter 1 Getting Started 1About G.SHDSL testing . . . . . . . . . . . . . . . . . . . . . . . . . . .2Quick tour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5Sealing current terminator . . . . . . . . . . . . . . . . . . . . . . .6

Chapter 2 G.SHDSL Testing 7Accessing the G.SHDSL testing feature . . . . . . . . . . . . . .8Testing in G.SHDSL STU-R TE mode. . . . . . . . . . . . . . . . .9

Selecting STU-R TE mode . . . . . . . . . . . . . . . . . . . . . . .9

HST-3000 G.SHDSL Testing User’s Guide Revision B v

Contents

Setting test parameters. . . . . . . . . . . . . . . . . . . . . . . . . .9Setting general modem parameters. . . . . . . . . . . .10Setting WAN parameters . . . . . . . . . . . . . . . . . . . .12Setting data parameters . . . . . . . . . . . . . . . . . . . . .13Setting ping parameters . . . . . . . . . . . . . . . . . . . . .15Setting PPP parameters. . . . . . . . . . . . . . . . . . . . .17Setting ATM BERT parameters . . . . . . . . . . . . . . .18Setting EOC parameters . . . . . . . . . . . . . . . . . . . .19Setting trace route parameters. . . . . . . . . . . . . . . .21Setting FTP parameters . . . . . . . . . . . . . . . . . . . . .22

Connecting to the line. . . . . . . . . . . . . . . . . . . . . . . . . .23Testing the physical layer . . . . . . . . . . . . . . . . . . . . . . .23Testing line quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .24Performing a ping test . . . . . . . . . . . . . . . . . . . . . . . . .25Releasing IP addresses . . . . . . . . . . . . . . . . . . . . . . . .26ATM BERT testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Testing in Ethernet TE mode . . . . . . . . . . . . . . . . . . . . . .28Selecting Ethernet TE mode. . . . . . . . . . . . . . . . . . . . .28Setting test parameters. . . . . . . . . . . . . . . . . . . . . . . . .29

Setting LAN parameters. . . . . . . . . . . . . . . . . . . . .30Connecting to the line. . . . . . . . . . . . . . . . . . . . . . . . . .31Testing line quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .31Performing a ping test . . . . . . . . . . . . . . . . . . . . . . . . .32

Testing in G.SHDSL through mode . . . . . . . . . . . . . . . . .32Selecting through mode . . . . . . . . . . . . . . . . . . . . . . . .33Setting test parameters. . . . . . . . . . . . . . . . . . . . . . . . .33

Setting LAN parameters. . . . . . . . . . . . . . . . . . . . .34Connecting to the line. . . . . . . . . . . . . . . . . . . . . . . . . .35Testing line quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .36Performing a ping test . . . . . . . . . . . . . . . . . . . . . . . . .37

Emulating a G.SHDSL STU-C . . . . . . . . . . . . . . . . . . . . . .37Selecting STU-C mode. . . . . . . . . . . . . . . . . . . . . . . . .38Setting test parameters. . . . . . . . . . . . . . . . . . . . . . . . .38

Setting CO parameters . . . . . . . . . . . . . . . . . . . . .38Connecting to the line. . . . . . . . . . . . . . . . . . . . . . . . . .39Testing line quality . . . . . . . . . . . . . . . . . . . . . . . . . . . .40ATM BERT testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Emulating a 380V Line RTU . . . . . . . . . . . . . . . . . . . . . . .42

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Contents

Chapter 3 Interpreting Test Results 45About G.SHDSL results . . . . . . . . . . . . . . . . . . . . . . . . . .46Summary results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46Error results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48Data errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

IP results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49Ethernet results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50Ping results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51Trace route results . . . . . . . . . . . . . . . . . . . . . . . . . . . .52ATM general results . . . . . . . . . . . . . . . . . . . . . . . . . . .53ATM OAM results . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54ATM channel results . . . . . . . . . . . . . . . . . . . . . . . . . . .55ATM BERT results . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

FTP results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58Performance results . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58Signal results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59Loop status results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60Identity results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61CO requested configs results . . . . . . . . . . . . . . . . . . . . .62EOC results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

EOC Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62EOC Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

380V Line RTU results . . . . . . . . . . . . . . . . . . . . . . . . . . .63Summary results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64Error results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64Signal results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Chapter 4 Troubleshooting 67Interpreting messages . . . . . . . . . . . . . . . . . . . . . . . . . . .68Resolving problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

Operating the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71Performing tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

General test problems . . . . . . . . . . . . . . . . . . . . . .72G.SHDSL test problems . . . . . . . . . . . . . . . . . . . . .72

HST-3000 G.SHDSL Testing User’s Guide Revision B vii

Contents

Glossary 81

Index 87

viii HST-3000 G.SHDSL Testing User’s Guide Revision B

About This Guide

This chapter describes how to use this guide. Topics discussed in this chapter include the following:

– “Purpose and scope” on page x– “Assumptions” on page x– “Terminology” on page x– “Application-oriented user guide” on page xi– “HST-3000 Base Unit User’s Guide” on page xi– “Safety instructions” on page xi– “Technical assistance” on page xii– “Conventions” on page xiii

HST-3000 G.SHDSL Testing User’s Guide Revision B ix

About This GuidePurpose and scope

Purpose and scopeThe purpose of this guide is to help you successfully use the features and capabilities of the Acterna HST-3000.

This guide includes task-based instructions that describe how to configure, use, and troubleshoot the HST-3000’s G.SHDSL testing option.

AssumptionsThis guide is intended for novice, intermediate, and experi-enced users who want to use the HST-3000 effectively and efficiently. We are assuming that you have basic computer experience and are familiar with basic telecommunication concepts, terminology, and safety.

TerminologyThe following terms have a specific meaning when they are used in this guide:

– HST-3000 — Handheld Services Tester 3000. In this user’s guide, “HST-3000” is used to refer to the HST-3000 family of products or to the combination of a base unit and attached SIM. “HST” is also sometimes used to refer to the base unit/SIM combination.

– SIM — Service Interface Module. Sometimes referred to generically as the module.

For definitions of other terms used in this guide, see the Glos-sary beginning on page 81.

x HST-3000 G.SHDSL Testing User’s Guide Revision B

About This GuideApplication-oriented user guide

Application-oriented user guideThe HST-3000 G.SHDSL Testing User’s Guide is an applica-tion-oriented user’s guide containing information about using the HST-3000 to perform test operations on G.SHDSL services. This guide includes an overview of testing features, instructions for using the HST-3000 in STU-R TE (terminal equipment) mode, Ethernet TE mode, STU-R through mode, and STU-C mode. This guide also contains test result descrip-tions and contact information for Acterna’s Technical Assis-tance Center (TAC).

This user’s guide should be used in conjunction with the HST-3000 Base Unit User’s Guide.

HST-3000 Base Unit User’s GuideThe HST-3000 Base Unit User’s Guide contains overall infor-mation relating to device and general functions such as using the unit with a keyboard, peripheral support, battery charging, saving and printing results, and managing files. This guide also contains technical specifications for the base unit and a description of Acterna’s warranty, services, and repair infor-mation, including terms and conditions of the licensing agree-ment.

Safety instructionsSafety and compliance information are provided in the Acterna HST Safety and Compliance Information booklet included with the HST-3000 user documentation CD-ROM.

HST-3000 G.SHDSL Testing User’s Guide Revision B xi

About This GuideTechnical assistance

Technical assistanceIf you need assistance or have questions related to the use of this product, call or e-mail Acterna’s Technical Assistance Center (TAC) for customer support. Before contacting TAC, you should have the serial numbers for your HST-3000 unit. See “Locating the serial number” in the HST-3000 Base Unit User’s Guide for more information.

Table 1 lists TAC information. For the latest TAC contact infor-mation, go to www.acterna.com, or contact your local sales office for assistance. For contact information for regional sales offices, see the back cover of this guide.

During off-hours, you can request assistance by doing one of the following: leave a voice mail message at the Technical Assistance number, e-mail the North American Technical

Table 1 Technical assistance centers

Region Phone Number

Americas (except Brazil)

1-866-ACTERNA301-353-1550

(1-866-228-3762)[email protected]

Brazil 0800-70153704617 38394617 3729

Europe, Africa, and Mid-East

+49 (0) 7121 86 1345 (Acterna Germany)

[email protected]

Asia and the Pacific +852 2892 0990 (Hong Kong)

+8610 6833 7477 (Beijing-China)

Southeast Asia, Australia, and New Zealand

+60 3 2730 6333(Kuala Lumpur)

xii HST-3000 G.SHDSL Testing User’s Guide Revision B

http://www.acterna.com

mailto:[email protected]


About This GuideConventions

Assistance Center, [email protected], or submit your ques-tion using our online Technical Assistance Request form at www.acterna.com.

ConventionsThis guide uses naming conventions and symbols, as described in the following tables.

Table 2 Typographical conventions

Description Example

User interface actions and buttons or switches you have to press appear in this type-face.

Press the OK key.

Code and output messages appear in this typeface.

All results okay

Text you must type exactly as shown appears in this type-face.

Type: a:\set.exe in the dia-log box.

Variables appear in this type-face.

Type the new hostname.

Book references appear in this typeface.

Refer to Newton’s Telecom Dictionary

Table 3 Keyboard and menu conventions

Description Example

A plus sign + indicates simul-taneous keystrokes.

Press Ctrl+s

A comma indicates consecu-tive key strokes.

Press Alt+f,s

HST-3000 G.SHDSL Testing User’s Guide Revision B xiii


http://www.acterna.com

About This GuideConventions

Table 4 Symbol conventions

Table 5 Safety definitions

A slanted bracket > indicates choosing a submenu from menu.

On the menu bar, click Start > Program Files.

Table 3 Keyboard and menu conventions

Description Example

This symbol represents a general hazard.

This symbol represents a risk of electrical shock.

This symbol represents a risk of explosion.

This symbol represents a Note indicating related informa-tion or tip.

DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

xiv HST-3000 G.SHDSL Testing User’s Guide Revision B

Chapter 1 Getting Started

1
This chapter provides a general description of the HST-3000’s optional G.SHDSL testing features. Topics discussed in this chapter include the following:
– “About G.SHDSL testing” on page 2– “Quick tour” on page 3

HST-3000 G.SHDSL Testing User’s Guide Revision B 1

Chapter 1 Getting StartedAbout G.SHDSL testing

About G.SHDSL testingThe HST-3000’s optional G.SHDSL testing feature enables users to emulate an STU-R, STU-C, and Ethernet terminal equipment (TE) to turn up and troubleshoot G.SHDSL circuits, and the service over the circuit. Using the optional IP suite or optional on-board web browser, the HST-3000 can also vali-date a data connection over the network.

The capabilities of the G.SHDSL feature include the following:

– Both remote and central office (exchange) modem emula-tion

– Ethernet TE emulation to verify service on the premises LAN

– Various physical line and EOC standards– User EOC messages– Network layer and PPP emulation and authentication– IP layer routing– ATM loopback– ATM F5 loopback– ATM BERT capability– IP ping– Web browser– “In-line” STU-R TE replacement “through” mode– Supports 2-wire or 4-wire interface

2 HST-3000 G.SHDSL Testing User’s Guide Revision B

Chapter 1 Getting StartedQuick tour

Quick tourThe following section describes the status indicators and connectors applicable to G.SHDSL.

Status LEDs These indicators report the status of the application. The func-tion of each LED is described in Table 6.

Table 6 Status LEDs

LED Function

Sync A two-color LED that reports the status of modem synchronization. – Flashing green indicates that the modems

are training. – Solid green indicates that the modems have

synchronized. – Solid red indicates a synchronization error

has occurred.

Data A two-color LED that reports the status of the data connection. – Flashing green indicates that the data con-

nection is not yet established. – Solid green indicates that a data connection

has been established with the network (so that the HST-3000 may send and receive data on the network).

– Solid red indicates that a data connection error.

Error A two-color LED that reports modem errors. – Solid red indicates an error condition.

Alarm A two-color LED that indicates alarm condi-tions. – Solid red indicates a local alarm condition. – Solid amber indicates a remote alarm condi-

tion.



Lpbk The loop back LED indicates a loopback con-dition.– Solid amber indicates that a local loop-

back has been achieved.

Batt Indicates the battery status. – The Batt LED is off when the battery has a

useful charge. – Solid green indicates the AC adapter is

plugged in. – Solid red indicates the battery is approxi-

mately 20 percent or below of full charge.– Flashing red indicates approximately five

minutes of use remains. When this happens, the battery should be charged or replaced immediately.

– Solid amber indicates the battery capacity indicator (“gas gauge”) needs to be reset.

For information about replacing or charging the battery, see the Acterna HST-3000 Base Unit User’s Guide.

Table 6 Status LEDs (Continued)

LED Function



Connectors The connectors for G.SHDSL are located on the right side of the SIM, as shown in Figure 1.

Use the 8-pin modular jack (G.SHDSL connector) for connec-tion to G.SHDSL circuits. If you are using through mode, connect an Ethernet cable to the Ethernet jack on the top panel.

The connector uses pins 4 and 5 for 2-wire G.SHDSL and the first pair of 4-wire G.SHDSL. The second pair for 4-wire uses either 1 and 2 or 3 and 6.

Figure 1 G.SHDSL connector

SIM

base unit

G.SHDSL connector

WARNING: ELECTRICAL SHOCKElectrical shock may result in serious injury or death. Use care when connecting to telecommunications circuits, to be sure that you do not come in contact with exposed conduc-tors or power mains. Connect TNV signals to TNV ports only.



Sealing currentterminator

The sealing current terminator, HST3000-SC, is an optional accessory available for DSL service. It is used when sealing current or wetting current must be terminated. Typically this occurs in an all-digital environment, but is not typical in DSL since the equipment (NT1 or telephone) provides termination.

The LED on the module indicates presence of sealing current. Place the module in-line, using the provided test cable.

The module is designed to terminate voltages under 80 volts, anything over 80V may make the module act erratic (LED flicker, go dim, etc.)

NOTE:It is not recommended leaving the sealing current termina-tor on the line in the presence of a repeater because the module oscillates and could cause signal integrity issues effecting HST test results.

CAUTION: DAMAGE TO MODULEPlacing the sealing current terminator on a line with voltage over 150 volts may damage the unit.


Chapter 2 G.SHDSL Testing

2
This chapter provides task-based instructions for using the optional HST-3000 G.SHDSL testing features. Topics discussed in this chapter include the following:
– “Accessing the G.SHDSL testing feature” on page 8– “Testing in G.SHDSL STU-R TE mode” on page 9– “Testing in Ethernet TE mode” on page 28– “Testing in G.SHDSL through mode” on page 32– “Emulating a G.SHDSL STU-C” on page 37– “Emulating a 380V Line RTU” on page 42


Chapter 2 G.SHDSL TestingAccessing the G.SHDSL testing feature

Accessing the G.SHDSL testing featureUsing an HST-3000 with G.SHDSL testing capability, you can perform tests in the following modes:

– STU-R TE (terminal equipment)– STU-R through – STU-C TE – STU-C through – 380V Line RTU– Ethernet TE

The following procedure describes how to access the G.SHDSL testing feature.

To access the G.SHDSL testing feature

1 Press the Home navigation key.

2 Press the G.SHDSL soft key.The G.SHDSL Measurements menu appears.

The following sections describe these modes and how to use them.


Chapter 2 G.SHDSL TestingTesting in G.SHDSL STU-R TE mode

Testing in G.SHDSL STU-R TE modeIn STU-R TE modem emulate mode, you can use the HST-3000 to terminate the line instead of the CPE.

The modem emulation test involves the following steps:

– selecting modem emulate mode– setting test parameters– connecting to the line– performing the tests

SelectingSTU-R TE mode

The first step for the test is to select STU-R TE modem emulate mode.

To select STU-R TE mode– From the G.SHDSL Measurements menu, select

G.SHDSL STU-R TE.The Summary statistics menu appears. The HST is in STU-R TE mode.

Setting testparameters

Before you begin testing, make sure the HST-3000 setup matches the parameters of the line that you are testing.

The following sections describe how to set the test parame-ters.

NOTE:To synchronize with the modem at the other end, you only need to set the general modem parameters. To use IP ping or the web browser, you must set the other parameters as well.



Setting generalmodem

parameters

The following procedure describes how to set the general modem parameters.

To set the general modem parameters

1 Press the Configure navigation key.The parameter soft keys appear.

2 Press the GENERAL soft key.The General Settings menu appears.

3 Select Phys. Standard, and then change the settings as appropriate for the physical standard in use.This is the physical standard to which the modem will operate:– G.991.2 (Annex A)– G.991.2 (Annex B)– G.991.2 (Annex B ANFP)– G.991.2 (Annex A) 4-wire– G.991.2 (Annex B) 4-wire– G.991.2 (Annex B ANFP) 4-wire

4 Select Func. Standard, and then change the settings as appropriate for the functional standard in use.The functional standard is the standard to which the modem will adhere, G.991.2 (mostly North America), or ETSI TS 101 524-1 (mostly Europe).



5 Select Auto Sync, and then change the settings as appropriate for auto sync.This specifies whether the HST-3000 will automatically attempt to re-sync with the DSLAM if the connection drops.

6 Select Power Backoff, and then change the settings as appropriate for power backoff.When enabled, this allows the transceiver to reduce the transmit power by 6 dB if the estimated line power loss is 6 dB or less.

7 Select Rate Mode, and then specify the baud rate mode. This selection is only available for 2-wire circuits. The fixed mode requests a particular rate at the connection. Adaptive mode allows the CPE and the DSLAM to nego-tiate a baud rate.

8 Select Payload Rate, and then enter the data transfer rate.This is the actual data transfer rate over the circuit. This should be a number between 64 and 2312 for 2-wire, and 384-4608 for 4-wire.

9 Select ASYMM. PSD, and then select the asymmetric power spectral density (Asymm. PSD) mask setting.When enabled, this forces the transceiver’s output power level to remain within the G.991.2 requirements. The Auto setting uses the same setting as the other end. If disabled, power spectral density will be symmetric.

10 Select Startup Margin, and then select the startup margin.This is the margin value the transceiver will use when selecting the line rate during adaptation. This is only used when the rate mode is adaptive. Chose 0 to 10 dB in 1 dB increments.

11 Select SNEXT Margin, and then specify the self near-end cross-talk setting (SNEXT).



The SNEXT setting is the minimum desired margin using self-NEXT noise model 49 disturbers. This is a dB margin requirement in addition to the noise margin threshold, that makes the connection more robust. However, use of SNEXT may cause a rate reduction as the connection must achieve both this margin and the regular noise margin. Chose -10 to 10 dB in 1 dB increments.

The general modem parameters are set.

Setting WANparameters

The following procedure describes how to set the wide area network (WAN) parameters. The WAN interface is the DSL connection to tip and ring.

To set the WAN parameters

1 Press the WAN soft key.The WAN Settings menu appears.

2 Select IP Mode, and then set the IP mode to either Static or DHCP (dynamic host configuration protocol).

3 Select IP Address, and then enter the IP address.

4 Select Net Mask, and then enter the net mask.

5 Select Gateway, and then enter the gateway address.

6 Select DNS, and then enter the address of the domain name server.



7 Select Which MAC, then specify either User Defined or Factory Default.

8 If the Which MAC parameter is set to User Defined, select MAC Address, then enter the appropriate address.

9 Select VLAN, then set it to On or Off.

The WAN parameters are set.

Setting dataparameters

To use ping, trace route, FTP, or the web browser, the data configuration must be set correctly. The VPI and VCI settings must match the customer-facing settings for the ADSL ports on the DSLAM.

Be sure to check these settings before you proceed with test-ing. Check the trouble ticket or call your help desk for assis-tance.

The following procedure describes how to set the data param-eters.

To set the data parameters

1 Press the DATA soft key.

NOTE:You may achieve synchronization with the DSLAM without configuring these settings, but you must configure these to use ping, trace route, FTP, or the web browser.



The Data Settings menu appears.

2 Press 1 then select a Data Mode.– IPoE is IP over Ethernet– IPoA is IP over ATM– PPPoA is PPP over ATM– PPPoE is PPP over Ethernet– ATM Loopback allows ATM cells to be looped back.– IPoE MVC Video is an optional mode for IP video

testing. For more information, see the HST-3000 IP Video Testing User’s Guide.

– Bridged Ethernet - used in Ethernet mode.– ATM BERT allows bit error rate testing over the ATM

layer.

3 Select VC, and then enter the virtual path indicator (VPI) and virtual channel indicator (VCI) for the virtual channel (VC) under test.



4 If you selected IPoE, IPoA, PPPoA, PPPoE, MVC Video, or Bridged Ethernet Data Mode, select TX ATM PCR and enter the transmit peak cell rate.– Unlimited transmits the maximum cell rate allowed on

the circuit.– User Specified allows you to enter a value from 2 to

50000 cells per second.

5 If you selected IPoE, IPoA, PPPoA, or PPPoE Data Mode, select Encapsulation, and then specify the appro-priate setting.Encapsulation is the way data is carried in ATM cells.

6 If you selected ATM Loopback Data Mode, select Loop-back Mode and specify whether to loop ALL cells or only TTC cells.

The data parameters are set.

Setting pingparameters

The following procedure describes how to set the ping param-eters.

To set the ping parameters

1 Press the PING soft key.

NOTE:If the rate entered is not attainable, the HST will round down to the next attainable rate.



The Ping Settings menu appears.

2 Select Address Type, and then select either IP Address or DNS Name (domain name server name).IP Address uses the numeric address, DNS Name uses the domain name, such as www.acterna.com

3 Select IP Address, and then enter the IP address.We recommend you use the IP address or Domain Name Services (DNS) name of the ISP gateway of the customer's service provider. It is also possible to ping any internet address or the network Broadband Remote Access Server (BRAS).

4 Select DNS Name, and then enter the DNS name.

5 Select Number Pings, and then set the number of pings to send before stopping.

6 Select Pings/second, and then set the number of pings per second.

7 Select Packet size, and then set the packet size.The default is 16. Change this only if needed.

The ping parameters are set.



Setting PPPparameters

The following procedure describes how to set the point-to-point protocol (PPP) parameters.

To set the PPP parameters

1 Press the PPP soft key.The PPP Settings menu appears.

2 Select PPP Mode, and then select either Client or Server.Client is normally used. Use Server only when you have an ATU-C. This feature allows a remote ATU-R to estab-lish a PPP session with the HST-3000.

3 Select User Name, and then enter a valid user name.This must be a valid user account with an ISP.

4 Select Use Provider, and then select either Yes or No.This option indicates whether to append the user name with the service provider domain name (for example, earthlink.net). Select Yes only if usernames for the ISP must include the domain name as part of the username. This setting automatically appends the @ sign for you.

NOTE:If you selected “Server” as the PPP mode, connect only to other devices with the same service name.



5 Select Provider, and then enter the provider name.This is required if you selected Yes for “Use Provider.”

6 Select Password, and then enter the user password.This must be a valid password that matches the user name above. Passwords are often case-sensitive.

7 Select Use Service Name.

8 If you selected “Yes” for Use Service Name, enter the Service Name.

The PPP parameters are set.

Setting ATM BERTparameters

If you selected ATM BERT as the data mode on the Data settings menu, the ATM BERT parameters must be set. The ATM BERT data mode is only available in modem emulate mode.

To set the ATM BERT parameters

1 Press the ATM BERT soft key.The ATM BERT Settings menu appears.

2 Select Bert Mode, and then select Rx Only, Tx Only, or Tx and Rx.

3 Select Bandwidth %, and then enter the percentage of bandwidth to test.

4 Select Pattern, and then select a Bert pattern.



5 Select Pattern Invert, and then select whether to invert the pattern.

6 Select Duration, and then select a test duration from the following:– Continuous– 1 Minute– 15 Minutes– 1 Hour– User Defined

7 If you selected a User Defined Duration, select Custom Duration, and enter the number of minutes for the test duration.

8 Select Threshold Enable, and then indicate whether a threshold is enabled.

9 If Threshold Enable is Enabled, select Threshold, and then enter the threshold.

The ATM BERT parameters are set.

Setting EOCparameters

The following procedure describes how to set the embedded operations channel (EOC) parameters.

To set the EOC parameters

1 Press the EOC soft key.



The EOC Settings menu appears.

2 Select EOC Standard, and then specify one of the following standards: G.991.2, ETSI TS 101 524-1, T1E1 4/99-006R6, or ETSI TS 101 524.

3 Select EOC Message, and then select one of the following messages to send:

This is the message transmitted when the “Send EOC message” menu item is selected. Change this only if another specific message is needed.

4 Optional. Select Req Remote Stats to request statistics from the far end.

To send this message... Press...

Discovery Probe the 1 key

Inventory Request the 2 key

Initiate System Loopback the 3 key

Terminate System Loopback the 4 key

Initiate Element Loopback the 5 key

Terminate Element Loopback the 6 key

Status Request the 7 key

Full Status Request the 8 key



The EOC parameters are set.

Setting trace routeparameters

The following procedure describes how to set the trace route parameters. For all modes except TE mode, the WAN inter-face is the DSL connection to tip and ring.

To set the trace route parameters

1 Press the Trace Route soft key. You may need to use the left or right arrow key to find the TRACERT soft key.The Trace Route Settings menu appears.

2 Select Address Type, and then select either IP address or DNS Name (domain name server name).


4 Select DNS Name, and then enter the DNS name.

5 Select Packet Type, and then set the packet type to one of the following:– ICMP (Internet Control Message Protocol)– UDP (User Datagram Packet).

6 Select DNS Lookup, and then indicate whether you want to lookup names for hops.

The trace route parameters are set.



Setting FTPparameters

The following procedure describes how to configure FTP (throughput) parameters.

To set FTP parameters

1 Press the FTP soft key. You may need to use the left or right arrow key to find the FTP soft key.The Thruput Settings menu appears.

2 Press the 1 key, and then enter a user name. Use the up and down arrows to indicate a letter or number, or use the keyboard keys.

3 Press the OK key to accept the changes.

4 Press the 2 key, and then enter a password. Use the up and down arrows to indicate a letter or number, or use the keyboard keys.

5 Press the 3 key, and then indicate whether you want to download or upload.

6 Press the 4 key, and then indicate the upload file size.



7 Press the 5 key, and then specify the upload content, either Pseudo-random or Fixed Pattern - AA55.

The thruput parameters are set.

Connecting tothe line

After setting the test parameters, you can connect to the line.

To connect to the line

1 Connect one end of the test cable to the jack on the side of the module.

2 Connect the other end of the cable using clip leads to clamp onto tip and ring as shown below.

The test leads are connected.

Testing thephysical layer

You can use the HST-3000 to test the physical layer of the G.SHDSL link. The following procedure describes the basic test for the G.SHDSL link.

To perform a basic G.SHDSL link test– Connect to the line and allow the unit to train on the line.

If the unit achieves sync at the desired data rates, noise margins, attenuation, and no errors, the G.SHDSL link is good.

NETWORK

45 ADSL

Line

NIDLine port

NETWORK

45 ADSL

Line

NIDLine port



Testing linequality

Once connected to the line, the HST-3000 gathers statistics for the line. These statistics are used to determine the line quality.

To test line quality

1 Connect to the line.The modem begins to train on the line automatically. When it reaches data mode, the HST-3000 begins gath-ering statistics.

Once data synchronization occurs, the Actions soft key appears.

2 Optional. To verify ATM level connectivity, press the Actions soft key then select either Send F5 Segment or Send F5 End-End.This sends a F5 loop command to the applicable device.

3 Optional. To send an EOC Message, press the Actions soft key then select Send EOC Message. If in 4-wire mode, select the pair on which the message will be sent.The EOC message that you selected in the EOC Settings menu is sent.

4 Press the Display soft key to view different types of statis-tics.If in 4-wire mode, statistics can be viewed for pair 1, pair 2 or both. Press the right or left arrow to select the pair.



See “About G.SHDSL results” on page 46 for information on interpreting the results.

5 Press the Results soft key to save the results to a text file, if desired.For more information on saving results and managing the files, see the Acterna HST-3000 Base Unit User’s Guide.

6 Press the DSL Stop soft key to stop the modem.All DSL results will remain in view until the modem is started again or another test is selected.

Testing line quality is complete.

Performing aping test

The following procedure describes how to perform a ping test. The ping test sends a ping packet through the modem to an IP address or DNS name (could be a network switch or web address) to test for connectivity.

To perform a ping test

1 Press the Actions soft key.

2 Select a ping method:– Ping Once sends a single ping to the network.– Start Ping consecutively sends multiple pings to the

network, up to the number of pings configured.

NOTE:You can also check connectivity using the web browser. See “Web browser” in the base manual for more informa-tion.

NOTE:To use ping (or the browser), the data mode parameters must be correctly set to match the connection. If the Data LED is not lit, the network connection is not ready and the ACTIONS soft key will not be visible.



3 Press the Results soft key to clear the results or save them to a text file.For more information on saving results and managing the files, see the Acterna HST-3000 Base Unit User’s Guide.

The test is complete.

Releasing IPaddresses

The HST allows you to release allocated IP addresses, so they can be used in other applications. The IP release feature is available when the data mode is set to one of the following:

– IP over Ethernet (IPoE)– PPP over Ethernet (PPPoE)– PPP over ATM (PPPoA)

For instructions setting the data mode, see “Setting data parameters” on page 13.

The following procedure describes how to release IP addresses.

To release IP addresses


2 Connect the HST to the line. See “Connecting to the line” on page 23.

3 Press the Display soft key.

4 Press the 4 key, and then press the 1 key.The IP results window appears.

5 Press the Actions soft key.

6 Select either Log-Off or IP-Release. The Data LED goes dark.The Log-Off and IP-Release options are only available when you are viewing the IP results window.

The IP address is now available for use in other applications.



ATM BERTtesting

The HST-3000 allows testing of the ATM layer using a bit error rate test (BERT). The following procedure describes how to perform an ATM BERT.

To perform an ATM BERT test

1 Verify that ATM BERT is selected as the Data Mode. See “Setting data parameters” on page 13.


3 Connect the HST to the line. See “Connecting to the line” on page 23.Once data synchronization occurs, the Actions soft key appears.

4 Press the Actions soft key then select Start ATM BERT.

5 Press the Display soft key.

6 Press the 4 key then select ATM BERT.The ATM BERT results window appears.

7 To insert an error, press the Actions soft key then select Inject ATM BERT Error.The Injected Errors counter should increment.


Chapter 2 G.SHDSL TestingTesting in Ethernet TE mode

8 Press the Results soft key to clear or save the results.See “ATM BERT results” on page 57 for information on interpreting the results.

You have completed the ATM BERT test.

Testing in Ethernet TE modeIn Ethernet TE mode, you can use the HST-3000 to emulate Ethernet terminal equipment. You can connect to an Ethernet LAN or to the Ethernet port on the customer modem. You can then ping through the modem to a network switch or web address to test for connectivity.

The Ethernet TE test involves the following steps:

– selecting Ethernet TE mode– setting test parameters– connecting to the line– performing the tests

SelectingEthernet TE

mode

The first step for the test is to select Ethernet TE mode.

To select Ethernet TE mode


2 Press the ETHERNET soft key.



The Ethernet Measurements menu appears.

3 To specify Ethernet TE mode, select Ethernet TE.The Ethernet TE Summary appears. The HST is in Ethernet TE mode.


Before you begin testing, you must make sure that the HST-3000 setup matches the parameters of the line that you are testing.

To set test parameters

1 Select Ethernet TE mode (see “Selecting Ethernet TE mode” on page 28).

2 Press the Configure navigation key.The parameter soft keys appear. The following parameters can be changed:– Data parameters (see “Setting data parameters” on

page 13)– Ping parameters (see “Setting ping parameters” on

page 15)– LAN parameters (see “Setting LAN parameters” on

page 30)



Setting LANparameters

The following procedure describes how to set the LAN param-eters.

To set the LAN parameters

1 Press the LAN soft key.The LAN Settings menu appears.

2 Select IP Mode, and then set the IP mode to either Static or DHCP (dynamic host configuration protocol).


4 Select Net Mask, and then enter the net mask.

5 Select Gateway, and then enter the gateway address.

6 Select DNS, and then enter the address of the DNS server.

The LAN parameters are set.

NOTE:To synchronize with the modem at the other end, you only need to set the general modem parameters. To use IP ping or the web browser, you must set the other parameters as well.






1 Connect the cross-over Ethernet cable to the Ethernet port on the top panel as shown below.

The Ethernet port is pinned-out like a typical Ethernet network adaptor or network interface card (NIC), so you should use a straight cable if connecting to a hub, switch, or router.

2 Connect the other end of the cable to the LAN or modem Ethernet port.

3 Check for a green link light on the HST Ethernet port to verify a proper cable connection.


Testing linequality



1 Connect to the line.

Ethernet port

NETWORK

Modem

Ethernet port

NETWORK

Modem


Chapter 2 G.SHDSL TestingTesting in G.SHDSL through mode

The Ethernet TE statistic menu appears.

2 Press the Display soft key to view different types of statis-tics.If in 4-wire mode, statistics can be viewed for pair 1, pair 2 or both. Press the right or left arrow to select the pair.See “About G.SHDSL results” on page 46 for information on interpreting the results.

3 Press the Results soft key to clear the results or to save them to a file.For more information on saving results and managing the files, see the Acterna HST-3000 Base Unit User’s Guide.



You can do a ping test to test for connectivity. See “Performing a ping test” on page 25 for more information.

Testing in G.SHDSL through modeIn through mode, you can use the HST-3000 to replace the customer’s G.SHDSL modem to help sectionalize troubles. You can operate the HST in either STU-R through or STU-C through mode.



The through mode test involves the following steps:

– selecting through mode– setting test parameters– connecting to the line– performing the tests

Selectingthrough mode

The first step for the test is to select a through mode.

To select a through mode– From the G.SHDSL Measurements menu, select one of

the following modes:– G.SHDSL STU-R Through– G.SHDSL STU-C ThroughThe Summary statistics appear. The HST is in through mode.


Before you begin testing, you must make sure that the HST-3000 setup matches the parameters of the line that you are testing. The following parameters can be changed:

– General modem parameters (see “Setting general modem parameters” on page 10)

– Data parameters (see “Setting data parameters” on page 13)

– Ping parameters (see “Setting ping parameters” on page 15)

– PPP parameters (see “Setting PPP parameters” on page 17)

– LAN parameters (see “Setting LAN parameters” on page 34)

– WAN parameters (see “Setting WAN parameters” on page 12)



To synchronize with the modem at the other end, you only need to set the general modem parameters. To use IP ping or the web browser, you must set the other parameters as well.

Setting LANparameters

The following procedure describes how to set the LAN param-eters.

To set the LAN parameters

1 Press the LAN soft key.The LAN Settings menu appears.

2 Select NAT (network address translation), and then enable or disable as appropriate.Use this when the customer CPE modem/router assigns private IP addresses.

3 Select Server IP, and then enter the tester’s LAN server IP address.

4 Select Netmask, and then enter the LAN net mask address.

5 Select DHCP Server, and then enable or disable the tester’s DHCP server.Enable the DHCP server when the customer’s CPE is configured to receive an IP address automatically.



6 If DHCP Server is enabled, perform the following steps.

a Enter the starting IP address for the tester’s DHCP server.

b Enter the pool size.This is how many IP addresses the tester’s DHCP server may assign to other computers.

7 Select Media Type, then select the type of speed and duplex type that your LAN uses.The Auto selection will automatically detect the media type.

The LAN parameters are set.




1 Connect one end of the test cable to the 8-pin jack on the right-hand side of the HST-3000.

2 Connect the other end of the cable to Tip and Ring using either the modular jack or clip leads.

3 Perform the following steps to connect to the CPE.

a Connect one end of the Ethernet cable to the Ethernet jack on the top of the HST-3000.

Walljack

orLine port

Ethernet port

NID

Walljack

orLine port

Ethernet port

NID



b Connect the other end of the cable to the PC, hub, or router.Use a crossover cable if you are connecting to a PC. Use a straight cable if you are connecting to a hub or router.


Testing linequality



1 Connect to the line.The modem begins to train on the line automatically. When it reaches data mode, the HST-3000 begins gath-ering statistics.

2 Optional. To send an EOC Message, perform the following:

a Press the Actions soft key.

NOTE:The Actions soft key is only available when the modem has reached Data Mode.


Chapter 2 G.SHDSL TestingEmulating a G.SHDSL STU-C

b Select Send EOC Message. If in 4-wire mode, select the pair on which the message will be sent.The EOC message that you selected in the EOC Settings menu is sent. T





You can do a ping test to test for connectivity. See “Performing a ping test” on page 25 for more information.

Emulating a G.SHDSL STU-CYou can use the HST-3000 to emulate a G.SHDSL STU-C to help sectionalize troubles.

Using this mode involves the following steps:

– selecting STU-C TE mode– setting test parameters– connecting to the line– performing the tests



SelectingSTU-C mode

The first step for the test is to select STU-C mode.

To select STU-C mode– From the G.SHDSL Measurements menu, select

G.SHDSL STU-C TE.The Summary statistics appear. The HST is in STU-C mode.


Before you begin testing, you must make sure that the HST-3000 setup matches the parameters of the line that you are testing. The following parameters can be changed:

– General modem parameters (see “Setting general modem parameters” on page 10).

– Data parameters (see “Setting data parameters” on page 13).

– ATM BERT parameters (See “Setting ATM BERT parame-ters” on page 18).

– EOC parameters (see “Setting EOC parameters” on page 19)

– CO parameters (see “Setting CO parameters” on page 38)

Setting COparameters

The following procedure describes how to set the CO param-eters.

To set the CO parameters

1 Press the Configure navigation key

2 Press the CO soft key.



The G.SHDSL CO Settings menu appears.

3 Select Atten. Thresh., and then enter the attenuation threshold.This is the value limit for a good attenuation result. It is configured at the STU-R using the EOC. If the attenuation goes higher than this number, an alarm is generated.

4 Select Margin Thresh., and then enter the margin threshold.This is the value limit for a good SNR margin result. It is configured at the STU-R using the EOC. If the margin falls below this number, an alarm is generated.

5 Select Loopback Timeout, and then enter the loopback timeout time.This is the amount of time, in minutes, that the loopback will be maintained before dropping.

The CO parameters are set.




1 Connect one end of the test cable to the 8-pin jack on the right-hand side of the HST-3000.



2 Connect the other end of the cable to the STU-R.


Testing linequality



1 Connect to the line.

2 The modem begins to train on the line automatically. When it reaches data mode, the HST-3000 begins gath-ering statistics.

ModemModem



3 Optional. To send an EOC Message, perform the following:

a Press the Actions soft key.

b Select Send EOC Message. If in 4-wire mode, select the pair on which the message will be sent.The EOC message that you selected in the EOC Settings menu is sent.




ATM BERTtesting

The HST-3000 allows testing of the ATM layer using a bit error rate test (BERT). See “ATM BERT testing” on page 27.

NOTE:The Actions soft key is only available when the modem has reached Data Mode.


Chapter 2 G.SHDSL TestingEmulating a 380V Line RTU

Emulating a 380V Line RTUYou can use the HST-3000 to emulate a 380V line (GoDig-ital™) RTU and perform measurements on the G.SHDSL pair. The HST-3000’s GoDigital SIM comes with two types of connectors: alligator clips and push-on tips for wire wrap connectors. Select the appropriate connectors for your circuit and attach it to the SIM cord before performing tests.

To test in 380V Line RTU Emulate mode

1 From the G.SHDSL Measurements menu, select 380 V Line RTU Emulate. You may need to scroll down to find the selection.A warning message appears to warn about potentially hazardous voltages that may be present on the line.

2 Press OK or wait for the message to clear.

3 Connect to the line using the appropriate connector.

WARNING: HAZARDOUS VOLTAGEHazardous voltages up to 380VDC (from Tip to Ring) at 95 mA are present on GoDigital networks. Electrical shock may result in serious injury. Inspect the HST cables care-fully to ensure that there are no cracks in the insulation and that all connectors are secure. When connecting or discon-necting the cables, do not touch the metal ends; grasp by the rubber boots only.



Once connected to the line, the HST-3000 attempts to sync with the line. The sync LED indicates the status:– Solid green indicates synchronization.– Blinking green indicates linking and sync are in

progress.Once the HST-3000 has achieved synchronization, the Summary screen appears.

4 Press the Display soft key to view different types of statis-tics.See “380V Line RTU results” on page 63 for information on interpreting the results.


Testing in 380V Line RTU Emulate mode is complete.

NOTE:The HST-3000 drops the connection after 20 seconds.


Chapter 3 Interpreting Test Results

3
This chapter describes the test results that are gathered when running a test, to help you interpret your results. Topics discussed in this chapter include the following:
– “About G.SHDSL results” on page 46– “Summary results” on page 46– “Error results” on page 47– “Event log” on page 48– “Data errors” on page 48– “Performance results” on page 58– “Signal results” on page 59– “Loop status results” on page 60– “Identity results” on page 61– “CO requested configs results” on page 62– “EOC Counters” on page 63– “380V Line RTU results” on page 63


Chapter 3 Interpreting Test ResultsAbout G.SHDSL results

About G.SHDSL resultsAfter the HST-3000 has synchronized with the remote end, the unit will immediately display results on the LCD. You can view many additional results by pressing the Display soft key and selecting other results screens.

Summary resultsThis category provides a summary of the most important test results. If in 4-wire mode, statistics can be viewed for pair 1, pair 2 or both. Press the right or left arrow to select the pair.

Table 7 describes the STU-R and STU-C summary results. (See Table 10 for the Ethernet summary results, and page 63 for 380V Line RTU results.)

NOTE:The available results depend on the modem type and test configuration. Your unit may not show all of the results listed in the following sections.

Table 7 Summary results

Result Description Range Resolution

Interface Shown in the upper right of the screen. It is the current interface.

N/A N/A

Data mode Shown in the upper right of the screen. It is the current data mode.

N/A N/A

L1 Standard Shown in the upper right of the screen. It is the current layer 1 standard.

N/A N/A


Chapter 3 Interpreting Test ResultsError results

Error resultsThis category provides both local and remote error statistics. If in 4-wire mode, statistics are displayed for both pairs.

Table 8 describes the error results for the G.SHDSL.

Start Progress The current initializing state for the modem. A graphical display also indi-cates the modem state.

N/A N/A

Payload Rate User payload rate of the current connection.

64–2312 kbps N/A

Line Rate Payload Rate + 8 kbps. 72–2320 kbps N/A

Local Margin SNR margin on the CPE side of the connection.

0–58 dB 1dB

Frame Sync Indication of the framer status.

In sync, Out of sync

N/A

Table 7 Summary results (Continued)


Table 8 Error results


ES Number of seconds in which one or more CRC error occurred

0–4294967295 seconds 1 second

SES Count of seconds in which at least 50 CRC errors occurred or one or more LOSW defects are declared.


UAS Count of unavailable sec-onds, which occurs after 10 contiguous SES



Chapter 3 Interpreting Test ResultsEvent log

Event logThis category provides a running log of significant modem events and errors.

If in 4-wire mode, the event is labeled with the appropriate pair.

Data errorsThis category displays network connection statistics and parameters and IP ping information. It is only available when a data mode has been selected in the G.SHDSL configuration screens. There are several types of results available under the data category.

LOSWS Number of seconds in which a LOSW effect occurred


CRC Count of CRC errors in the G.SHDSL frame

0–4294967295 errors 1 error

HEC Errored ATM cell head-ers that have been auto-matically corrected.


Table 8 Error results (Continued)



Chapter 3 Interpreting Test ResultsData errors

IP results This category provides information about the IP connection. Table 9 describes the IP results.

Table 9 IP results

Result Definition

WAN IP Address The HST-3000's IP address to the access or provider network. (Called LAN IP Address in Ethernet TE mode.)

WAN Net Mask The HST-3000’s netmask address. IP devices use a netmask IP address to deter-mine if IP packets are to be routed to other networks or sub-networks. (Called LAN Net Mask in Ethernet TE mode.)

LAN IP Address The HST-3000's IP address to a PC or lap-top, hub or router connected to the HST-3000's ethernet port. (Through mode only)

LAN Net Mask The HST-3000's netmask address for the LAN interface. (Through mode only)

Gateway The HST-3000's gateway address. When an IP device has determined that a packet is not addressed to it or devices on the same sub-network (subnet), it sends all such packets to the gateway address for further routing to the correct address.

DNS Domain Name Server. When using internet addresses such as www.acterna.com, the HST-3000 (and all IP devices) must trans-late to an IP address (such as 157.234.12.20) in order to route the pack-ets or data. To do so, it first requests a DNS server to translate an internet address into an IP address; then the HST-3000 can cor-rectly route IP pings or other data. The DNS address must be that of a real DNS server, preferably in the provider network.



Ethernet results The Ethernet category provides statistics on Ethernet frames when the HST-3000's 10/100BT Ethernet interface is used in STU-R TE, Ethernet TE, or G.SHDSL thru-modes. Table 10 describes the Ethernet results.

State The status of DHCP, DNS and TCP/IP pro-tocols used to route traffic on the access network.

Table 9 IP results (Continued)

Result Definition

Table 10 Ethernet results

Result Definition

RX Bytes Total bytes received

RX Frames Total frames received

RX Errors Total errors received

RX Dropped Total dropped frames

TX Bytes Total bytes transmitted

TX Frames Total frames received

TX Errors Total errors received

TX Dropped Total dropped frames

TX collisions Ethernet frames are transmitted “space-available” when there is a break on the signal on the cable; sometimes frames are transmitted at the same time as another transmitter, causing a “collision” of frames.

Link Status Current status of the connection.



Ping results Think of ping (packet internet groper) as sonar on a network. The HST-3000 sends out IP packets (Internet Control Messaging Protocol [ICMP] “echo” requests) to which the destination (target) automatically responds. Ping tells you if the destination is alive and awake, how fast the ping went to the destination and back to the HST-3000, and if ping packets were dropped and lost along the way. Table 11 describes the ping results.

Table 11 Ping results

Result Definition

Destination Network address (IP address or URL) to which the echo messages (that is, ping messages) will be sent. This should be within the provider network, but can also prove connectivity to the ISP (for example, www.earthlink.net) or to the internet.

Echos sent The number of ping messages sent.

Echos returned The number of echo reply messages returned to theHST-3000 from the des-tination.

Lost/Lost% The number of pings that did not return to the HST-3000. This could be caused by an unresponsive target (destination) or by heavy congestion on the network; the more packets lost the more con-gested the network, indicating slow or poor throughput.

Echos received The number of ping messages sent to the HST-3000 from other devices on the network.



Trace routeresults

Table 12 describes the trace route results.

Delay Current The time in milliseconds that it took the last transmitted ping to reach the desti-nation and receive a reply back to the HST-3000. This varies depending on the network and the traffic load on the network, but in general, pings taking longer than 500ms should be noted, and if persistent over several days, reported to network support engineers.

Delay Ave Delay average. The average time in milliseconds it has taken all transmitted pings to reach their destinations and receive replies back to the HST-3000.

Delay Max The longest time in milliseconds it has taken any one transmitted ping to reach its destination and receive a reply back to the HST-3000.

Delay Min Delay minimum. The shortest time in milliseconds it has taken any one trans-mitted ping to reach its destination and receive a reply back to the HST-3000.

Message Any ICMP error and delay messages about the pings

Table 11 Ping results (Continued)

Result Definition

Table 12 Trace route results

Result Definition

Destination Network address (IP address or URL) to which the echo messages will be sent

State Current state of the trace



ATM generalresults

G.SHDSL, by definition, transports data over Asynchronous Transfer Mode (ATM) instead of traditional TDM circuits. To assist in troubleshooting G.SHDSL network connections, the HST-3000 provides a number of different ATM statistics (these are useful if IP pings don't work, but ATM cells are still being sent and received).

Table 13 describes the test results for the general ATM cate-gory.

Active Whether there is a trace route currently active

Number of hops The number of points crossed from the source to the destination

Table 12 Trace route results (Continued)

Result Definition

Table 13 ATM general results

Result Definition

TX cells Count of transmitted ATM cells.

TX AAL5 Frames Count of transmitted ATM Adaptation Layer 5 Cells. Since ATM can carry differ-ent types of user data (such as web pages or voice), ATM layers are defined to carry the different types of data effec-tively. For normal, non-time sensitive data, such as e-mail and user files, AAL5 is used.

TX Dropped Cells Count of transmitted dropped cells. The ATM network will discard or “drop” erred cells which must then be retransmitted (this is done automatically). The HST-3000 counts the number of ATM cells and how many were dropped, giving an indication of service quality.



ATM OAMresults

While a number of different test cells are identified to help in the administration and maintenance of ATM networks, the HST-3000 supports the F5 loopback function to verify ATM level connectivity (similar to IP ping, but F5 is only for ATM; IP ping does not apply to ATM and there is officially no such thing as an “ATM ping”)

RX Cells Total number of received ATM cells.

RX AAL5 Frames Total number of received ATM Adaptation Layer 5 frames. Multiple ATM cells are grouped together in frames to carry large amounts of user data over the network.

RX CRC Errors Total number of ATM cells received by the HST-3000, which had CRC (cyclical redundancy check) errors.

RX AAL5 Length Errors

Total number of ATM AAL5 frames received by the HST-3000, which were too short or too long due to errors.

RX AAL5 Aborts Total number of ATM AAL5 frames which were lost or dropped due to excessive errors.

Last Unknown VPI/VCI

Last unknown virtual path indicator (VPI) and virtual channel indicator (VCI). ATM user data must be correctly routed to its destination, which is accomplished by designating a VPI and VCI (both are required). G.SHDSL user data also requires a VPI and VCI, which if incorrect, prevents the user from accessing the net-work. To assist the connection process, the HST-3000 identifies the VPI and VCI of the last ATM cells coming over the G.SHDSL link, helping you to set the cor-rect VPI and VCI.

Table 13 ATM general results (Continued)

Result Definition



Table 14 describes the ATM OAM results.

ATM channelresults

An ATM circuit consists of virtual paths which contain virtual circuits that carry user data. ATM channel statistics are the cells and errors from the current virtual circuit via which the HST-3000 is connected to the access network (after G.SHDSL synchronization is achieved).

Table 14 ATM OAM results

Result Definition

Sent The number of ATM F5 Loopback requests transmitted by the HST-3000.

Returned The number of F5 loop back responses sent from the HST-3000.

Lost The number of F5 Loop back requests that do not return within five seconds.

Received The number of F5 loop back requests that returned to the HST-3000.

Uncorrelated The number of F5 loop back replies which cannot be correlated to a particular location or device on the ATM network or segment.

Delay Max Delay maximum. The longest time in milli-seconds that it took an HST-3000 F5 loop back request to return to the HST-3000.

Delay Min Delay minimum. The shortest time in milli-seconds that it took an HST-3000 F5 loop back request to return to the HST-3000.

Delay Last The time in milliseconds that it took the last transmitted F5 Loop back request to return to the HST-3000.

Delay Ave Delay average. The average time in milli-seconds of all the transmitted F5 Loop back requests to return to the HST-3000.



Table 15 describes the ATM channel test results.

Table 15 ATM channel results

Result Definition

VPI/VCI The virtual path indicator and virtual circuit indicator used by the HST-3000 to connect to the network (this should match the cus-tomer's modem settings; if unsure, check with a co-worker or supervisor). Most cus-tomer G.SHDSL modem settings for the VPI/VCI will be identical in a geographical area (not to be confused with the cus-tomer's DSLAM WAN [network] VPI/VCI settings; ask a supervisor).

TX cells Total count of transmitted cells on the channel.

TX AAL5 Frames Transmitted ATM Adaptation Layer 5 Cells. Since ATM can carry different types of user data (such as web pages or voice), ATM layers are defined to carry the differ-ent types of data effectively. For normal, non-time sensitive data, such as e-mail and user files, AAL5 is used.

TX Dropped Cells

Transmitted dropped cells. The ATM net-work will discard or “drop” erred cells which must then be retransmitted (this is done automatically). The HST-3000 counts the number of ATM cells and how many were dropped, giving an indication of ser-vice quality.

RX Cells Total received ATM cell count.

RX AAL5 Frames Total received ATM Adaptation Layer 5 frames. Multiple ATM cells are grouped together in frames to carry large amounts of user data over the network.

RX CRC Errors Total number of ATM cells received by the HST-3000, which had CRC (cyclical redundancy check) errors.



ATM BERTresults

Table 16 describes the ATM BERT results.

RX AAL5 Length Errors

Total number of ATM AAL5 frames received by the HST-3000, which were too short or too long due to errors.

RX AAL5 Aborts Total number of ATM AAL5 frames which were lost or dropped due to excessive errors.

Table 15 ATM channel results (Continued)

Result Definition

Table 16 ATM BERT results

Result Description

Tx State Current state of the transmit path.

RX state Current state of the receive path.

Bit Errors Number of received bits with a value oppo-site that of the corresponding transmitted bits, after pattern synchronization has been achieved.

BER Bit Error Rate. Ratio of bit errors to received pattern data bits

ES Errored Seconds. Number of seconds during which one or more bit errors occurred since initial pattern synchronization

%ES Percent Errored Seconds. Ratio of seconds during which pattern bit errors were detected, to the total number of seconds while pattern synchronization is present.

Sync Lost Number of times loss of synchronization occurred.

Injected Errors Number of injected errors transmitted.


Chapter 3 Interpreting Test ResultsFTP results

FTP resultsTable 18 describes the FTP results.

Performance resultsThis category provides both local and remote performance statistics. If in 4-wire mode, statistics can be viewed for pair 1 or pair 2. Press the right or left arrow to select the pair.

Table 17 FTP results

Result Description

Transfer Count The number of times the file was transferred.

Upload Rate The speed that the file was uploaded.

Download Rate

The speed that the file was downloaded.

Total Time The total time it took for the entire transfer, from beginning to end.

Pretransfer Time

The number of seconds of processing elapsed before the transfer began.

Name Lookup Time

The number of seconds it took to lookup the name.

Start Time The time that the transfer began.

Redirect count The number of times the file was redirected.

Message Status message.


Chapter 3 Interpreting Test ResultsSignal results

Table 18 describes the G.SHDSL link performance results.

Signal resultsThese parameters provide more information about the G.SHDSL link. If in 4-wire mode, statistics are displayed for both pairs.

Table 19 describes the signal results.

Table 18 Performance results


Power Backoff Indicates whether power back-off is enabled.

Enabled, Dis-abled

N/A

SNR Margin SNR margin of the current connection.

0–58 dB 0.5 dB

Loop Attenuation Amount of attenuation on the G.SHDSL loop. This is the dif-ference between the reported transmit power and the received level.

0–126 dB 0.5 dB

Payload Rate Rate of the current connection 64–2312 kbps N/A

Line Rate Payload Rate + 8 kbps. 72–2320 kbps N/A

Frame Sync Indication of the framer syn-chronization status.

In Sync, Out of Sync

N/A

Table 19 Signal results


SNR Signal to noise ratio for the cur-rent connection.

10–58 dB 0.5 dB


Chapter 3 Interpreting Test ResultsLoop status results

Loop status resultsThis category provides information about the current status and history of the loop. If in 4-wire mode, statistics are displayed for both pairs.

Table 20 describes the results for the loop status category.

Receiver Gain The amount of gain the modem’s receiver is using to maintain the current connec-tion.

-34–24 dB 0.5 dB

Transmit Power The nominal transmit power of the local transceiver.

0–16.5 dBm 0.5 dBm

Num Syncs Total number of times the modem achieved synchroniza-tio.

N/A N/A

Table 19 Signal results (Continued)


Table 20 Loop status results

Result Description

Remote Loopback Indicates the remote loopback status.

Remote SNR Alarm Indicates that the remote SNR mar-gin has fallen below the threshold value.

Remote Loop Attn Alarm

Indicates that the remote loop attenu-ation is higher than the threshold value.

Remote LOSW Alarm Indicates that a remote LOSW failure has occurred.

Local Loopback Indicates the local loopback status.


Chapter 3 Interpreting Test ResultsIdentity results

Identity resultsThe identity category provides identification information about things such as the vendor and revision of the modem. Table 21 describes the test results for the identity category.

Local SNR Alarm Indicates that the local SNR margin has fallen below the threshold value.

Local Loop Attn Alarm Indicates that the local loop attenua-tion is higher than the threshold value.

Local LOSW Alarm Indicates that a local LOSW failure has occurred.

Table 20 Loop status results (Continued)

Result Description

Table 21 Identity results

Result Description

Local SW Version The version of software running on the near end modem.

Local DSP Version The version of the local modem DSP chip.

Rmt SW Version The version of software running on the remote modem.

Rmt Vendor Model The model number of the remote modem.

Rmt Provider Code The provider code for the remote modem.

Rmt Country Code The country code for the remote modem.

Rmt Vendor Specific Any vendor specific data the remote modem sends via the EOC.

Rmt SHDSL Version The SHDSL version for the remote modem.


Chapter 3 Interpreting Test ResultsCO requested configs results

CO requested configs resultsThis category provides information about the remote (CO) requested configuration. Table 22 describes the results for the remote requested configuration category.

EOC resultsThis category describes events on the embedded operations channel (EOC).

EOC Log This category provides a running log of EOC messages received.

If in 4-wire mode, the event is labeled with the appropriate pair.

Table 22 CO requested configuration results


Loop Attn Threshold Value used to trigger a loop attenuation threshold defect.

0=Off, 1–127 dB 1 dB

SNR Margin Thresh-old

Value used to trigger a signal to noise ratio margin defect.

0=Off, 1–15 dB 1 dB

Loopback Timeout Sets the timeout limit for a loopback.

0=No timeout, 1–4095 minutes

1 minute

Local Management Flow

Indicates whether the customer may initiate EOC management messages.

Enabled, Dis-abled

N/A

Configuration Request Time

Time stamp of the last configu-ration request.

HH:MM:SS N/A

Configuration Request Date

Date of the last configuration request.

YYYY-MM-DD N/A


Chapter 3 Interpreting Test Results380V Line RTU results

EOC Counters This category provides information about the EOC messages that the HST-3000 transmits and receives. If in 4-wire mode, statistics are displayed for both pairs.

Table 23 describes the results for the local performance cate-gory.

380V Line RTU resultsWhen operating in 380V Line RTU Emulate mode, the results are separated into three categories:

– Summary results– Error results– Signal results

Table 23 EOC counters results


EOC Req TX The number of EOC messages initiated from the unit.

0–4294967295 messages

1 message

EOC Resp RX The number of EOC messages received in response to EOC requests from the unit.

0–4294967295 messages

1 message

Total EOC Msg TX The total number of EOC mes-sages transmitted.

0–4294967295 messages

1 message

Total EOC Msg RX The total number of EOC mes-sages received.

0–4294967295 messages

1 message



Summaryresults

This category provides a summary of the most important test results. Table 24 describes the summary results for RTU mode.

Error results This category provides local error statistics. Table 25 describes the error results for RTU mode.

Table 24 Summary results


Start Progress The current initializing state for the modem. A graphical display also indicates the modem state.

N/A N/A

SNR Margin SNR margin of the current con-nection.

0–58 dB 0.5 dB

Receiver Gain The amount of gain the modem’s receiver is using to maintain the current connection.

-34–24 dB 0.5 dB

Loop Attenua-tion

Amount of attenuation on the G.SHDSL loop. This is the differ-ence between the reported transmit power and the received level.

0–126 dB 0.5 dB

Table 25 Error results


ES Errored Seconds. Num-ber of seconds in which one or more CRC error occurred


SES Severely errored sec-onds. Count of seconds in which at least 50 CRC errors occurred or one or more LOSW defects are declared.




Signal results These parameters provide more information about the link. Table 26 describes the signal results for RTU mode.

UAS Count of unavailable sec-onds, which occurs after 10 contiguous SES


LOSWS Loss of sync word sec-onds. Number of seconds in which a LOSW effect occurred


CRC Cyclic Redundancy Check. Count of CRC errors in the G.SHDSL frame


Table 25 Error results (Continued)


Table 26 Signal results


Local Margin SNR margin on the HST end of the connection.

0–58 dB 1dB

Transmit Power

The nominal transmit power of the HST’s transceiver.

0–16.5 dBm 0.5 dBm

Num. Syncs The number of times the HST has synchronized since power up.

N/A N/A


Chapter 4 Troubleshooting

4
This chapter describes how to identify and correct problems related to the HST-3000. Topics discussed in this chapter include the following:
– “Interpreting messages” on page 68– “Resolving problems” on page 71


Chapter 4 TroubleshootingInterpreting messages

Interpreting messagesThe HST-3000 provides error messages when it is unable to complete a command. This information enables you to solve simple problems that may be a result of data input. Each message is listed in Table 27, along with a message descrip-tion and suggested corrective action, if applicable.

Table 27 Error messages

Message Description Action

NO ATM SYNC The G.SHDSL link is not active, or the unit cannot achieve ATM sync with the STU-C

Verify G.SHDSL link and check ATM settings

INVALID CONFIG The IP parameters are configured to an invalid setting.

Adjust the IP parameters.

DHCP FAILED The DHCP process failed to receive an IP address.

Wait until the attempt succeeds. The HST-3000 will keep trying until it receives an IP address from the DHCP server.

PPP LCP FAILED The unit encountered a failure in the LCP stage of PPP negotiation.

Check the encapsulation scheme and the VPI/VCI addresses.

PPP AUTH FAILED

The HST-3000 failed the authentication stage of PPP negotiation.

Check the user name and pass-word.

PPP IPCP FAILED The unit encountered a failure in the IPCP stage of PPP negotiation.

Check to be sure the addresses between both clients match.

PPPoE FAILED The unit failed to find a compatible PPPoE server on the Ethernet network.

Wait until the attempt succeeds. The HST-3000 will keep trying until it finds a compatible server on the network.



DNS SRVR NOT RESP

The domain name server did not respond to the lookup request.

Verify DNS address.

DNS RECURSION N/A

The domain name server does not support recur-sion.

Try a different DNS address.

DNS NAME NONEXIST

The domain name server reports that the name or domain does not exist.

Verify the destination name.

DNS UNKNOWN Received an unknown message from the DNS address.

Try a different DNS address.

NETWORK UNREACH

The unit was unable to connect to the specified address.

Check the destination address or name.

HOST UNREACHABLE

The unit was unable to reach the specified host.


PROTOCOL UNREACH

The unit was unable to verify protocol informa-tion.

Verify protocol information.

PORT UNREACHABLE

The port numbers are conflicting.

Try a different IP address.

FRAGMENT NEEDED

The user data provided is too long.

Shorten the user data.

ROUTE FAILED No route exists for the ping destination.


TTL EXC TRANSIT

The ping was routed too many times before reach-ing the destination.


TTL EXC REASSMBLY

The ping had to be recre-ated too many times before reaching the desti-nation.


Table 27 Error messages (Continued)




TTL EXC FRAGMENT

The IP fragment was routed too many times.


NETWORK PROHIBITED

Could not reach destina-tion. Communication with the destination network is administratively prohib-ited.

Try a different destination.

HOST PROHIBITED

Could not reach destina-tion. Communication with the destination host is administratively prohib-ited.


TOS NOT SUPP NET

The type of service is not supported on the network.


TOS NOT SUPP HOST

The type of service is not supported on the host.


HOST UNKNOWN The unit was unable to find the specified host.


NETWORK UNKNOWN

The unit was unable to find the specified network.


NETWORK UNREACHABLE

Could not reach destina-tion. The destination net-work does not accept the type of service.


ARP HOST UNREACHABLE

The device could not resolve the IP address with Ethernet protocol.

Examine the configurations.

Table 27 Error messages (Continued)



Chapter 4 TroubleshootingResolving problems

Resolving problemsIf you are having trouble with the HST-3000, the following sections describe common problems and solutions. You should verify whether your problem is listed here before contacting technical assistance.

Operating theunit

The following section addresses questions that may be asked about operating and performing basic functions with the HST-3000.

Issue

I cannot print out statistics.

Resolution

Verify that the printer cable is connected correctly.

Verify that your terminal program is configured and working correctly.

Verify your printer is working properly.

Issue

The microphone does not work.

Resolution

Check the headset connection.

The headset is not used for G.SHDSL testing (only used for POTS and VoIP calls).



Performingtests

The following section addresses questions that may be asked about completing tests with the HST-3000. There are two sections included:

– General– G.SHDSL tests

General testproblems

The following section addresses questions about testing in general.

Issue

Inconsistent test results.

Resolution

Verify that your test leads are good and are connected prop-erly for the test you are performing.

G.SHDSL testproblems

The following section addresses questions about G.SHDSL testing.

Issue

The modem cannot achieve sync with the remote end.

Resolution

Inability to sync can have many causes. Perform the following steps to troubleshoot:

– Disconnect the customer's G.SHDSL modem.– Verify tester connection to the correct pair.– Verify that the physical G.SHDSL standard is correct

(G.991.2 Annex A or Annex B).– Verify that the functional standard is correct (G.991.2,

ETSI TS 101 524-1)– Verify that the EOC standard is correct (G.991.2, ETSI TS

101 524-1, T1E1 4/99-06R6, ETSI TS 101 524)



– Verify the asymmetric PSD setting.– Isolate premise wiring.– Verify the copper pair is provisioned for G.SHDSL at the

CO.– Test at the CO/Exchange on the customer pair.– Check the DSLAM modem vendor and software version.

Issue

The HST is set up for “Adaptive” Rate Mode to match the DSLAM but the modem cannot achieve sync with the remote end. The last modem state is Check Bit Rate.

Resolution

G.SHDSL line rates are determined using the following formula: n x 64 kbps + i x 8 kbps. In this formula, the base data rate is n x 64 kbps; the sub data rate is i x 8 kbps. In synced mode, an additional 8 kbps is added for frame sync.

The modems will only sync if the sub data rate is the same. Find the STU-C and STU-R line rates in Table 28. They should be in the same “i=x” column. For example, if one side is set to a 256 payload with a line rate of 264 and the other side is set to a 384 payload with a line rate of 392, the modems will sync. However, if one side is set to a 256 payload with a line rate of 264 and the other side is set to a 328 payload with a line rate of 336, the modems will not sync.

Table 28 Valid speeds for G.SHDSL

Two Wire Four Wire

i=0 i=1 i=0

n Line Rate Payload Line

Rate Payload Line Rate Payload

1 72 64 80 72 144 1282 136 128 144 136 272 2563 200 192 208 200 400 3844 264 256 272 264 528 512



5 328 320 336 328 656 6406 392 384 400 392 784 7687 456 448 464 456 912 8968 520 512 528 520 1040 10249 584 576 592 584 1168 115210 648 640 656 648 1296 128011 712 704 720 712 1424 140812 776 768 784 776 1552 153613 840 832 848 840 1680 166414 904 896 912 904 1808 179215 968 960 976 968 1936 192016 1032 1024 1040 1032 2064 204817 1096 1088 1104 1096 2192 217618 1160 1152 1168 1160 2320 230419 1224 1216 1232 1224 2448 243220 1288 1280 1296 1288 2576 256021 1352 1344 1360 1352 2704 268822 1416 1408 1424 1416 2832 281623 1480 1472 1488 1480 2960 294424 1544 1536 1552 1544 3088 307225 1608 1600 1616 1608 3216 320026 1672 1664 1680 1672 3344 332827 1736 1728 1744 1736 3472 345628 1800 1792 1808 1800 3600 358429 1864 1856 1872 1864 3728 371230 1928 1920 1936 1928 3856 384031 1992 1984 2000 1992 3984 396832 2056 2048 2064 2056 4112 409633 2120 2112 2128 2120 4240 4224

Table 28 Valid speeds for G.SHDSL (Continued)

Two Wire Four Wire

i=0 i=1 i=0





Issue

In through mode, I’m connected to the Ethernet connector, but I’m not getting a data connection (green LED on the Ethernet connector is on, but the yellow LED is not).

Resolution

Go to the LAN Settings screen and check the Media Type. If it’s set to Auto, change it to match the specific LAN speed and duplex type that you are using.

Issue

The modem gets sync with the CO, but the rate is lower than expected.

Resolution

If the rate mode is adaptive, verify the startup margin and SNEXT margin settings.

Issue

The ping menu says pings are being sent, but the network statistics are not incrementing.

Resolution

The ping function only attempts to send a ping every second. Depending on certain conditions, a physical ping packet may not be sent.

34 2184 2176 2192 2184 4368 435235 2248 2240 2256 2248 4496 448036 2312 2304 2320 2312 4624 4608

Table 28 Valid speeds for G.SHDSL (Continued)

Two Wire Four Wire

i=0 i=1 i=0





Check that the unit has not lost sync.

If the Ethernet protocol (not interface protocol) is being used, the device has to ARP the address first. If this fails eventually you will see a ARP HOST UNREACHABLE message. Check to see that the destination IP address and our configured IP parameters are correct.

If the Ethernet interface is being used, make sure that the cabling is correct. If the Ethernet cable is not hooked up, or is hooked up incorrectly, a packet will not be sent. Thus the Ethernet statistics will not increment.

Check the Ethernet link light on the HST-3000 Ethernet jack. It should be green.

Issue

The ping menu says pings are being sent, but the number of replies doesn’t match the pings sent.

Resolution

Check the TX ATM PCR value on the Data settings screen. If the PCR is set too low, ping replies will be lost. This is because the “number of pings” selection (on the Ping settings) is defined as the number of pings per second and the PCR value is set as cells per second. Thus, if you are sending more pings than the PCR allows, you will not receive ping replies.

To resolve this, do one of the following:

– Set the number of pings to 1– Set the PCR to 1000 or unlimited.

Issue

The ATM total statistics are incrementing but the channel stats are not incrementing.



Resolution

Reconfigure the interface to match the VPI/VCI given in the VPI/VCI of Last Unknown Cell statistic.

Issue

The ATM channel statistics indicate that I am receiving frames but I did not get a green Data LED and pings are not working.

Resolution

Check the encapsulation and the mode. The wrong protocol may be in use.

Issue

I have a PPPoA service and I get a PPP TIMEOUT message

Resolution

Verify that the VPI-VCI is correct.

Verify that the encapsulation is correct.

Verify that the addressing mode is set correctly (IPCP/Static).

Verify that the username and password are correct.

Issue

I have a PPPoE connection and I get a PPPoE FAILED message.

Resolution



Verify that the addressing mode is correct.

Verify that the user name and password are correct (including case)



Issue

I have a Bridged Ethernet connection and I get a DCHP FAILED message.

Resolution



Verify that the DHCP server isn't out of addresses. (Contact your IT department or help desk.)

Issue

I get an INVALID CONFIG message.

Resolution

Verify that a valid IP address is being used (examples of invalid IP addresses would be *.*.*.0 or 127.*.*.* or 10.0.0.1 or 192.168.0.0).

Verify that the IP address and gateway are on the same network as defined by the netmask.

Check the netmasks if Ethernet IP = DSL IP. The netmasks must be different.

Verify that the Netmask is not set to 0.0.0.0.

Issue

I have a green Data LED, but pings are not working.

Resolution

A green Data LED does not guarantee a ping (or any routed/bridged packet) will be treated properly once it leaves the unit. In an Ethernet bridged or IP over ATM environment with static



addressing, there is no initial communication with the far end, so as soon as ATM sync occurs the interface is deemed active to pass user data.

Make sure that the VPI-VCI is correct.

Make sure that the encapsulation is correct.

Try pinging a different host.

Make sure you are not behind a firewall; they can block ping responses from reaching the host.

Check to see if the connection is unnumbered. If it is, verify that the connection is configured correctly.

View the Results>Data>Ping menu. It can often give important clues as to why the ping is not successful.

Issue

I get a message that is not listed when I am performing tests.

Resolution

You may receive an unspecified or unknown error message while you are testing G.SHDSL lines. This is because of the many different possible types of G.SHDSL modem errors. If you receive one of these messages, try the following:

Try to resync with the line.

Check the configuration of the HST-3000.

Check the configuration of the DSLAM.


Glossary

A

ADSLAM — Advanced Digital Subscriber Line Access Multi-plexer. Concentrates and multi-plexes signals at the telephone service provider location to the broader wide area network.

ATM — Asynchronous Transfer Mode. A cell-based data transfer technique in which channel demand determines packet allo-cation. ATM offers fast packet technology, real time, demand lead switching for efficient use of network resources.

Auto-Negotiation — Proce-dure for adjusting line speeds and other communication parameters automatically between two computers during data transfer.

B

BER — Bit Error Rate.

Bit error — Received bits with a value opposite that of the corre-sponding transmitted bits. Also called a test sequence error (TSE).

Bps — Bits per second.

C

CO — Central Office.

Cell — A fixed length unit of information. Most other data units can vary in length, but a cell is fixed in size. This helps cut down on network delays and variations in the delay through a network.


Glossary

Crosstalk — The interference caused by signals on adjacent circuits in a network.

CPE — Customer Premise Equipment. Devices or equip-ment that the customer provides to interface with the telco.

D

Delay — A contributing measure of the carrying capacity of a link. Delay indicates how long it takes bits to find their way through a network.

Digital — Having only discrete values, such as 0 or 1.

DSL — Digital Subscriber Line. A generic name for a family of standards allowing high-speed data transfer over telephone lines.

DSLAM — Digital Subscriber Line Access Multiplexer.

DSU/CSU — Data Service Unit/Channel Service Unit -The inter-face device required to change one form of digital signal to another.

DTMF — Dual Tone Multi-Frequency. A voice-band tone-based method of signaling.

E

Echo — The reflecting of a signal back to its source due to a variety of reasons.

Encapsulation — The tech-nique used by layered protocols in which a layer adds header information to the protocol data unit (PDU) from the layer above.

Ethernet — A local area network (LAN) wiring scheme. You can use the HST-3000 to emulate Ethernet terminal equipment to test connectivity.

G

Gateway — A system which does translation from some native format to another.

G.SHDSL — G.SHDSL is an international standard for symmetric DSL developed by the ITU. G.SHDSL provides for sending and receiving high-speed symmetrical data streams over a single pair of copper wires at rates between 192 kbps and 2.31 Mbps. G.SHDSL was developed to incorporate the features of other DSL technolo-gies, such as ADSL and SDSL and will transport T1,E1, ISDN, ATM and IP signals.


Glossary

I

ICMP — Internet Configuration Message Protocol. The protocol used to handle errors and control messages at the IP layer. ICMP is actually part of the IP protocol.

Internet Protocol (IP) — The network layer protocol for the Internet protocol suite.

IP Address — The 32-bit address assigned to hosts that want to participate in a TCP/IP Internet.

L

LAN — Local Area Network. A limited distance (typically under a few kilometers or a couple of miles) high-speed network (typi-cally 4 to 100 Mbps) that supports many computers.

LED — Light Emitting Diode. The lights indicating status or activity on electronic equipment.

LiIon — Lithium Ion. A type of rechargeable battery.

Line Rate — The speed by which data is transferred over a particular line type, expressed in bits per second (bps).

Local Gain — Receiver gain in the downstream direction in dB. Note that this can be (and often is) negative.

Local Transmit Power —Transmit power in dBm in the upstream direction. Note that this can be (and often is) nega-tive.

Loopback — A diagnostic test that returns the transmitted signal back to the sending device after is has passed through a network or across a particular link. The returned signal can then be compared to the transmitted one. The discrepancy between the two help to trace the fault.

LOSW — Loss of sync word.

M

Modem Pooling — The ability of a service provider to dynami-cally switch users' messages between modems, rather than requiring a modem to be dedi-cated to a particular user on a network.

Modem Redundancy — When backup modems are immedi-ately available should a modem facilitating communication fail.


Glossary

N

NAT — Network Address Trans-lation

Network Interface Device —The demarcation point where the public network ends and the private network within a home or office begins. All wiring and user devices inside the premises (such as a modem) are controlled and operated by the owner.

P

PAP — Password Authentica-tion Protocol.

Physical Layer — Handles transmission of raw bits over a communication channel. The physical layer deals with mechanical, electrical, and procedural interfaces.

Physical Port — A physical or logical connection to a computer or test instrument through which data flows. An Ethernet port, for example, is where Ethernet network cabling plugs into a computer.

POTS — Plain old telephone service. The basic service supplying standard single line telephones, telephone lines, and access to the public

switched network. POTS only allows customers to place and receive calls. Extra services, such as call waiting or call forwarding, are not included.

PPP — Point-To-Point-Protocol. The successor to SLIP, PPP provides router-to-router and host-to-network connections over both synchronous and asynchronous circuits.

R

Remote Address — The IP address of a remote server.

Remote Gain — Receiver gain in the upstream direction in dB. Note that this can be negative but usually isn’t.

Remote Server — A network computer that allows a user to log onto the network from a distant location.

RHNC — Relative humidity non-condensing.

Route — The path that network traffic takes from its source to its destination. The route a data-gram may follow can include many gateways and many phys-ical networks.

RS-232 — An EIA standard which is the most common way of linking data devices together.


Glossary

S

SDSL — Symmetric Digital Subscriber Line. A digital subscriber line (DSL) tech-nology in which the transmission of data from server to client is the same speed as from the client to the server.

STU — SHDSL transceiver unit.

STU-C — SHDSL transceiver unit (STU) located at the central office.

STU-R — SHDSL transceiver unit (STU) located at the remote end, such as the customer premises.

Sync Bits — Synchronizing bits (more properly bytes or charac-ters) used in synchronous trans-mission to maintain synchronization between trans-mitter and receiver.

Syncs — Number of times the unit has trained.

T

TCP/IP — Transmission Control Protocol/Internet Protocol. The official protocol of the Internet and Web.

Terminate Mode — The HST-3000 is connected to the customer premise site of the DSLAM without a PC. You can then use the HST-3000 to ping.

Through Mode — The HST-3000 is connected with a PC and is serving as the customer modem.

V

VCI — Virtual channel identifier. A unique numerical tag as defined by a 16 bit field in the ATM cell header that identifies a virtual channel, over which the cell is to travel.

VPI — Virtual path identifier. An eight bit field in the ATM cell header which indicates the virtual path over which the cell should be routed.

W

WAN — Wide Area Network. A data communications network that spans any distance and is usually provided by a public carrier.


Glossary


Index

AADSLAM 81Alarm LED 3ATM BERT

setting parameters 18–19test 27–28

ATM resultschannel 55general 53OAM 54

BBase unit user’s guide xiBatt LED 4

CCable, ethernet 31Capabilities 2CO parameters, setting 38CO requested configs 62

Connecting to the linein Ethernet TE mode 31in RTU mode 42in STU-C mode 39in STU-R TE mode 23in through mode 35

Connector, G.SHDSL 5Conventions xiiiCrosstalk 82

DData

errors 48LED 3parameters, setting 13–15

Delay 82DHCP server 68, 78Documentation

base unit user’s guide xiG.SHDSL testing option user’s guide xi

DSL 82DSLAM

defined 82troubleshooting 13, 73


Index

EEmulating

380V Line RTU 42ethernet terminal equipment 28G.SHDSL STU-C 37

Encapsulation 82EOC

counters 63log 62setting parameters 19

ErrorLED 3messages 68results 47, 64

Ethernetdefined 82results 50TE mode, connecting to line 31TE mode, testing 28–32

Event log 48

FF5 loopbacks 24Features 2FTP 22

GGateway 78, 82

IIdentity results 61Interpreting messages 68IP

results 49IP address

defined 83releasing 26troubleshooting 68, 76, 78

LLAN

defined 83parameters, setting 30, 34

LEDalarm 3batt 4data 3defined 83error 3sync 3

LEDslpbk 4

LiIon 83Line Rate 83LOSW 83Lpbk LED 4

MMessages, interpreting 68–70Modem

pooling 83redundancy 83setting parameters 10

NNAT 84Network interface device 84Network mask 78Noise margin 23

PPAP 84Password See PPPPerformance results 57, 58Physical layer

defined 84testing 23

Ping


Index

performing test 25results 51setting parameters 15troubleshooting 75, 76–79

PPPdefined 84password 68, 77setting parameters 17–18troubleshooting 68

RResolving problems 71Results

ATM channel 55ATM general 53ATM OAM 54CO requested configs 62data errors 48EOC counters 63EOC log 62error 47, 64Ethernet 50event log 48identity 61IP 49performance 57, 58ping 51signal 59, 65summary 46, 64troubleshooting 72

RTU Emulate mode testing 42–43RTU mode 42–43

SSDSL 85Sealing current terminator 6Serial number, locating 71Server, DHCP 68, 78Signal results 59, 65Statistics

See also Resultsprinting 71troubleshooting 76, 77

Status LEDs 3

STU-C modeconnecting to the line 39testing 37–41

STU-R TE modeconnecting to the line 23testing 9–26

Summary results 46, 64Sync

bits 85physical layer 23troubleshooting 68, 72, 73

Sync LED 3

TTerminate mode 85

STU-C 37STU-R TE 9

Testingaccessing test feature 8Ethernet TE mode 28line quality, Ethernet TE mode 31line quality, STU-C mode 40, 43line quality, STU-R TE mode 24line quality, through mode 36physical layer 23RTU mode 42–43STU-C mode 37STU-R TE mode 9through mode 32

Through modeconnecting to the line 35testing 32–37

Thruput, setting parameters 22–23Trace route, setting parameters 21Train(ing) See syncTroubleshooting 71

G.SHDSL tests 72general 72operation 71tests 72

UUser documentation

base unit user’s guide xiG.SHDSL testing option user’s


Index

guide xi

VVCI

defined 85setting 13troubleshooting 68, 77, 78

Virtual channel indicator 14Virtual path indicator 14

VPIdefined 85setting 13troubleshooting 68, 77, 78

WWAN

defined 85setting parameters 12


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HST-000-556-01Revision B, 10/2005English

HST_G-SHDSL_manual_Rev B.pdf

Documents

Transcript of HST_G-SHDSL_manual_Rev B.pdf