mation is subject to change without notice, and JDSU reserves the right to provide an addendum to this document with information not available at the time that this document was created.
Copyright © Copyright 2009 JDS Uniphase Corporation. All rights
reserved. JDSU, Test and Measurement Solutions, and the JDSU logo are trademarks of JDS Uniphase Corporation (“JDS Uniphase”). All other trademarks and registered trade-marks are the property of their respective owners. No part of this guide may be reproduced or transmitted electronically or otherwise without written permission of the publisher.
Trademarks JDS Uniphase, JDSU, HST-3000, and HST-3000C are
trade-marks or registered tradetrade-marks of JDS Uniphase Corporation 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.
Ordering information
This guide is a product of JDSU's Technical Information Development Department, issued as part of the HST-3000. The catalog number for a printed guide is ML-060701. The catalog number for a USB stick containing the manual in elec-tronic form is ML-060301.
Terms and Conditions
The provision of hardware, services and/or software are sub-ject to JDSU’s standard terms and conditions available at
Commission (FCC) Notice
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 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 condiOpera-tions: (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 JDSU requires that quality interface cables be used when connecting to this equipment. Any changes or modifications not expressly approved by JDSU could void the user's authority to operate the equipment.
Industry Canada Requirements
This Class B digital apparatus complies with Canadian ICES-003.
Compliance 2002/96/EC, and the Battery Directive, 2006/66/EC. This product, and the batteries used to power the product, should not be disposed of as unsorted municipal waste and should be collected separately and disposed of according to your national regulations. In the European Union, all equip-ment and batteries purchased from JDSU after 2005-08-13 can be returned for disposal at the end of its useful life. JDSU will ensure that all waste equipment and batteries returned are reused, recycled, or disposed of in an environmentally friendly manner, and in compliance with all applicable national and international waste legislation.
It is the responsibility of the equipment owner to return equip-ment and batteries to JDSU for appropriate disposal. If the equipment or battery was imported by a reseller whose name or logo is marked on the equipment or battery, then the owner should return the equipment or battery directly to the reseller. Instructions for returning waste equipment and batteries to JDSU can be found in the Environmental section of JDSU’s web site at www.jdsu.com. If you have questions concerning disposal of your equipment or batteries, contact JDSU’s WEEE Program Management team at
Contents
About This Guide
ixPurpose and scope . . . x
Assumptions . . . x
Terminology . . . x
Application-oriented user guide . . . xi
HST-3000 Base Unit User’s Guide . . . xi
Safety and compliance information. . . xi
Technical assistance. . . .xii
Conventions. . . xiii
Chapter 1
Getting Started
1 About G.SHDSL testing . . . 2Quick tour. . . 3
Status LEDs . . . 3
Connectors . . . 5
Chapter 2
G.SHDSL Testing
7Accessing the G.SHDSL testing feature. . . 8
Testing in G.SHDSL STU-R TE mode . . . 9
Selecting STU-R TE mode. . . 9
Setting test parameters . . . 9
Setting general modem parameters . . . 10
Setting data parameters . . . 13
Setting WAN parameters . . . 15
Setting 802.1x security parameters . . . 17
Specifying STUN settings . . . 18
Setting PPP parameters . . . 20
Setting ping parameters. . . 21
Setting ATM BERT parameters . . . 22
Setting EOC parameters . . . 24
Setting trace route parameters . . . 25
Setting FTP/HTTP parameters . . . 26
Connecting to the line . . . 27
Testing the physical layer. . . 28
Testing line quality . . . 28
Performing a ping test . . . 30
Releasing IP addresses . . . 31
Throughput testing . . . 32
ATM BERT testing . . . 32
Testing in G.SHDSL through mode. . . 34
Selecting through mode . . . 34
Setting test parameters . . . 34
Setting LAN parameters . . . 35
Connecting to the line . . . 36
Testing line quality . . . 37
Performing a ping test . . . 39
Emulating a G.SHDSL STU-C . . . 39
Selecting STU-C mode . . . 39
Setting test parameters . . . 40
Setting CO parameters . . . 40
Testing line quality . . . 42
ATM BERT testing . . . 43
Chapter 3
Interpreting Test Results
45 About G.SHDSL results . . . 46 Summary results . . . 47 Error results . . . 48 Event log . . . 49 Data errors . . . 50 IP results . . . 50 Ethernet results . . . 51 Ping results . . . 52Trace route results . . . 54
ATM general results . . . 54
ATM OAM results . . . 56
ATM channel results . . . 57
ATM BERT results . . . 58
FTP/HTTP results . . . 59
Performance results . . . 60
Signal results . . . 61
Loop status results . . . 61
Identity results . . . 63
CO requested configs results . . . 64
EOC results . . . 64 EOC Log . . . 64 EOC Counters. . . 65
Chapter 4
Troubleshooting
67 Interpreting messages . . . 68 Resolving problems . . . 71Operating the unit . . . 71
Performing tests . . . 72
General test problems . . . 72
Glossary
83About 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 and compliance information” on page xi
– “Technical assistance” on page xii
Purpose and scope
The purpose of this guide is to help you successfully use the features and capabilities of the HST-3000.
This guide includes task-based instructions that describe how to configure, use, and troubleshoot the HST-3000’s G.SHDSL testing option.
Assumptions
This 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.
Terminology
The 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.
Application-oriented user guide
The 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 JDSU’s Technical Assistance 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 Guide
The 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 JDSU’s warranty, services, and repair informa-tion, including terms and conditions of the licensing agree-ment.
Safety and compliance information
Technical assistance
If you need assistance or have questions related to the use of this product, call or e-mail JDSU’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).
Table 1 lists contact information for technical assistance. For the latest TAC information, go to www.jdsu.com or contact your local sales office for assistance. Contact information for regional sales headquarters is listed on the back cover of this guide.
During off-hours, you can request assistance by doing one of the following: leave a voice message at the TAC for your region; email the North American TAC ([email protected]); submit your question using our online Technical Assistance request form at www.jdsu.com.
Table 1 Technical assistance centers
Region Phone Number
Americas 1-866-ACTERNA 1-866-228-3762
301-353-1550
Europe, Africa, and Mid-East
+49 (0) 7121 86 1345 (JDSU Germany)
[email protected] Asia and the Pacific +852 2892 0990
Conventions
This 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 A slanted bracket > indicates
choosing a submenu from menu.
Table 4 Symbol conventions
Table 5 Safety definitions
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.
This symbol, located on the equipment, battery, or packag-ing indicates that the equipment or battery must not be dis-posed of in a land-fill site or as municipal waste, and should be disposed of according to your national regulations.
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.
1
Getting Started
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
About G.SHDSL testing
The 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
Quick tour
The 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
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 HST-3000 Base Unit User’s Guide.
Table 6 Status LEDs (Continued)
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 SHOCK
Sealing current
terminator
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 MODULE
2
G.SHDSL Testing
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 G.SHDSL through mode” on page 34
Accessing the G.SHDSL testing feature
Using 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.
Testing in G.SHDSL STU-R TE mode
In 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
Selecting
STU-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 test
parameters
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:
Setting general modem 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:
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 (used most often), or ETSI TS 101 524-1 (typicaly only used for interoperability with older hardware).
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 varies depending on the physical standard. The payload rate should be a number
– between 64 and 2312 for Annex A, Annex B, and Annex B ANFB two wire
– between 192 and 5696 for Auto PAM Annex A/F and Auto TCPAM Annex B/G
– between 768 and 5696 for TCPAM32 Annex A/F and TCPAM 32 Annex B/G
9 If you selected a 4-wire Physical standard in step 3, select Enhanced 4 Wire and specify whether it is enabled. 10 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. This setting is not available if you are using a .bis Phys-ical Standard.
11 Select Target Margin, and then specify the target SNR 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. Choose 0 to 10 dB in 1 dB increments.
12 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.
13 Select Event Log Size, and then specify the size of the event log. The size options are as follows: 100, 200, 300, 400, 500.
Setting data parameters
To use ping, trace route, FTP/HTTP, or the web browser, the data configuration must be set correctly. The VPI and VCI settings must match the customer-facing settings for the SHDSL 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 specify the data settings.
To set the data parameters 1 Press the DATA soft key.
The Data Settings menu appears.
2 Select Data Mode and then choose a mode. – IPoE is IP over Ethernet
– IPoA is IP over ATM – PPPoA is PPP over ATM – PPPoE is PPP over Ethernet NOTE:
– Multi-VLAN - Multiple VLANs are used on this network. In this mode, the HST assumes that the networks that are accessed via each VLAN are unique, and thus provides access to a different range of IP addresses. A typical scenario would be one VLAN for Internet data, another VLAN for Voice, and another VLAN for Video. – ATM Loopback allows ATM cells to be looped back. – Bridged Ethernet - HST acts as a layer two bridging
device between the WAN and LAN (no routing). – ATM BERT allows bit error rate testing over the ATM
layer.
3 If you are testing in IPoE data mode, select 802.1x Secu-rity and then specify whether 802.1x authentication is supported on your network.
4 If you are testing in IPoE data mode, select STUN Enabled and then specify whether STUN is enabled. 5 If you are testing in Multi-VLAN data mode, select
Inter-face Count, and then enter the number of VLANs, between 1 and 3.
Additional setup items appear for each VLAN: Interface Mode and Interface Purpose.
6 If you are testing in Multi-VLAN data mode, select Inter-face x Mode, and then specify the data mode for that sub-interface (IPoE or PPPoE).
7 If you are testing in Multi-VLAN data mode, select Inter-face x Purpose, and then specify the purpose for that sub-interface (Internet, Video, or Voice).
8 Repeat steps 6 and 7 for any remaining interfaces. 9 Select VC, and then enter the virtual path indicator (VPI)
10 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.
11 If you selected IPoE, IPoA, PPPoA, or PPPoE Data Mode, select Encapsulation, and then specify the appro-priate setting.
12 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 WAN parameters
The following procedure describes how to set the wide area network (WAN) parameters. The WAN interface is the DSL connection to tip and ring.
The WAN Settings menu appears if you are using IPoE or Multi VLAN data mode. For Multi VLAN data mode, you may have more than one WAN screen (for example, WAN2, WAN3).
NOTE:
If the rate entered is not attainable, the HST will round down to the next attainable rate.
NOTE:
To set the WAN parameters 1 Press the WAN soft key.
The WAN Settings menu appears.
If you are using Multi VLAN data mode, the first item is Interface Mode but is not selectable. It is auto populated from the Data Settings menu “Interface x Mode” selection. 2 If you are using IPoE or IPoA data mode, select IP Mode, then select either Static or DHCP (dynamic host configu-ration protocol).
If you selected DHCP, do the following.
a Select Use Vendor ID and specify whether the vendor ID is used.
If you selected Yes, enter the Vendor ID. b Go to step 3.
If you selected Static, do the following.
a Select IP Address, then enter the IP address. b Select Net Mask, then enter the net mask address. c Select Gateway, then enter the gateway address. d Select DNS, then enter the address of the DNS server.
3 If you are using PPPoE or IPoE data mode, do the following.
a Select Which MAC, then specify either User Defined or Factory Default.
b If the Which MAC parameter is set to User Defined, enter the appropriate address.
c Select VLAN, then set it to On or Off.
The Virtual LAN (VLAN) setting is only necessary if a VLAN is used to segregate video data flows from other data flows.
If VLAN is on, specify the VLAN ID and VLAN Priority.
4 Press the Home navigation key to return to the Data Summary screen.
The WAN parameters are set.
Setting 802.1x security parameters
The 802.1x Settings menu appears only if you are using the IPoE data mode and “802.1x Security” is set to “Yes” on the Data Settings menu.
IEEE 802.1x offers a framework for authenticating and controlling user traffic to a protected wireless network. Authentication involves a supplicant (a client device) attempting to connect with an authenticator (the 802.11 access point). The access point (authenticator) blocks all other traffic until it can verify the client's identity. Once authen-ticated, the access point opens the client's port for other types of traffic.
For this authentication, the HST acts as a supplicant. The following procedure describes how to specify the 802.1x settings.
NOTE:
To set 802.1x parameters
1 Press the 802.1x soft key. You may need to scroll left or right to find it.
The 802.1x Settings screen appears.
2 Press 1 then select whether 802.1x Security authentica-tion is supported on your network.
3 Press 2 then enter the Username. 4 Press 3 then enter the Password. The 802.1x parameters are set.
On the main screen, a lock icon indicates whether you are authenticated (indicated by a secured/closed lock) or unau-thenticated (an open lock).
Specifying STUN settings
This screen is only available if you are using IPoE data mode and “STUN Enabled” is set to “Yes” on the Data Settings menu.
STUN (Simple Transversal of UDP [User Datagram Protocol] Through NATs [Network Address Translators]) allows VoIP calls across a NAT router. These settings should only be changed if necessary.
To specify the STUN settings 1 Press the STUN soft key.
The STUN Settings menu appears.
2 Select Address Type, and then specify whether an IP Address or DNS Name is used.
3 If you selected IP Address in step 2, select Server IP, and then enter the IP address of the STUN server.
If you selected DNS Name in step 2, select Server Name, and then enter DNS name of the STUN server.
4 Select Server Port, and then enter the port number for the STUN server.
5 Select Client Port and then enter the client port number. 6 Select NAT Refresh and then specify the NAT refresh
rate. This is the number of seconds between messages to the STUN server to keep the NAT mapping alive.
The STUN settings are specified. NOTE:
Setting PPP parameters
The following procedure describes how to specify the point-to-point protocol (PPP) settings. If you are using Multi VLAN data mode, you may have more than one PPP screen (for example, PPP2, PPP3).
To specify the PPP settings 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 STU-C. This feature allows a remote STU-R to estab-lish a PPP session with the HST-3000.
If you are using the Multi VLAN data mode, this selection is found only on the PPP1 Settings page.
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. NOTE:
This option indicates whether to append the user name with the service provider domain name (for example, earthlink.net). Select Yes only if user names for the ISP must include the domain name as part of the user name. This setting automatically appends the @ sign for you. 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 ping parameters
The following procedure describes how to set the ping param-eters.
To set the ping parameters 1 Press the PING soft key.
The Ping Settings menu appears.
IP Address uses the numeric address, DNS Name uses the domain name, such as www.jdsu.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 ATM BERT parameters
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.
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 – Custom
7 If you selected a Custom Duration, select Custom Dura-tion, and enter the number of minutes for the test dura-tion.
9 If Threshold Enable is Enabled, select Threshold, and then enter the threshold.
The ATM BERT parameters are set.
Setting EOC parameters
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:
To send this message... Press...
Discovery Probe the 1 key
Inventory Request the 2 key System LpBk (Initiate) the 3 key
System LpBk the 4 key
This is the message transmitted when the “Send EOC message” menu item is selected. Change this only if another specific message is needed.
4 If you selected one of the Element LpBk messages, specify the Element Number to which the message will be sent.
5 Optional. Select Req Remote Stats to request statistics from the far end.
This setting is only available in STU-R mode. The EOC parameters are set.
Setting trace route parameters
The following procedure describes how to set the trace route parameters.
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.
Element LpBk (Terminate) the 6 key
Status Request the 7 key
Full Status Request the 8 key
2 Select Address Type, and then select either IP address or DNS Name (domain name server name).
3 Select IP Address, and then enter the IP address. 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 FTP/HTTP parameters
The following procedure describes how to configure FTP/ HTTP (throughput) parameters.
To set FTP/HTTP parameters
1 Press the FTP/HTTP soft key. You may need to use the left or right arrow key to find the FTP/HTTP soft key. The FTP/HTTP Settings menu appears.
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.
8 Press the 6 key, and then select an HTTP Authentication configuration.
– None – no user name/password authentication needed
– Basic – the client sends the username and password entered, with no security
– Digest – the client sends the user name and password in a series of hashes for added security.
The FTP/HTTP (throughput) parameters are set.
Connecting to
the line
After setting the test parameters, you can connect to the line. To connect to the line
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 the
physical 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.
Testing line
quality
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 statistics.
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.
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 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.
The ping feature is available when the data mode is set to one of the following:
– IP over Ethernet (IPoE) – IP over ATM (IPoA)
The following procedure describes how to perform a ping test. To perform a ping test
1 Locate the Actions soft key.
If you do not see the Actions soft key, do the following: a Check the Data LED.
The Data LED must be green in order to use the Actions soft key. If the Data LED is red, the network connection is not properly established.
b Press the Configure navigation key and make sure all test settings are correct for the circuit.
c Press the Home navigation key. NOTE:
d Press the Display soft key, and then select Data - IP. See if there are any error messages.
e Locate the Actions soft key. 2 Press the Actions soft key. 3 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. 4 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 HST-3000 Base Unit User’s Guide.
The ping test is complete.
Releasing IP
addresses
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
1 Press the Home navigation key.
2 Connect the HST to the line. See “Connecting to the line” on page 27.
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.
Throughput
testing
Using the FTP/HTTP throughput feature, you can perform a file transfer to test the throughput of the circuit.
To test throughput
1 Specify the FTP/HTTP settings (see “Setting FTP/HTTP parameters” on page 26).
2 Navigate to the FTP/HTTP results screen. 3 Press the Actions soft key.
4 Select FTP/HTTP and then Enter Address.
5 Enter the address using the keypad, including the prefix (ftp: or http: or, if applicable, https:) and the filename. For example, ftp://10.0.0.1/name
6 Press OK to begin the file transfer. The results appear on the screen.
See “FTP/HTTP results” on page 59 for information on interpreting the results.
ATM BERT
testing
To perform an ATM BERT test
1 Verify that ATM BERT is selected as the Data Mode. See
“Setting data parameters” on page 13. 2 Press the Home navigation key.
3 Connect the HST to the line. See “Connecting to the line” on page 27.
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.
8 Press the Results soft key to clear or save the results. See “ATM BERT results” on page 58 for information on interpreting the results.
Testing in G.SHDSL through mode
In 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
Selecting
through 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 Through
The Summary statistics appear. The HST is in through mode.
Setting test
parameters
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)
– PPP parameters (see “Setting PPP parameters” on page 20)
– LAN parameters (see “Setting LAN parameters” on page 35)
– WAN parameters (see “Setting WAN parameters” on page 15)
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 LAN parameters
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.
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.
8 Select Forward Multicast and then specify whether it is enabled.
The LAN parameters are set.
Connecting to
the line
After setting the test parameters, you can connect to the line. To connect to the line
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.
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.
The test leads are connected.
Testing line
quality
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.
If in 4-wire mode, Summary results are available for pair 1, pair 2 or both. Press the right or left arrow to select the pair.
2 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.
3 Press the Display soft key to view different types of statistics.
See “About G.SHDSL results” on page 46 for information on interpreting the results.
NOTE:
4 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 HST-3000 Base Unit User’s Guide.
Testing line quality is complete.
Performing a
ping test
You can do a ping test to test for connectivity. See
“Performing a ping test” on page 30 for more information.
Emulating a G.SHDSL STU-C
You 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
Selecting
STU-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.
Setting test
parameters
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 param-eters” on page 22).
– EOC parameters (see “Setting EOC parameters” on page 24)
– CO parameters (see “Setting CO parameters” on page 40)
Setting CO parameters
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.
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.
Connecting to
the 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 8-pin jack on the right-hand side of the HST-3000.
2 Connect the other end of the cable to the STU-R.
The test leads are connected.
Testing line
quality
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.
2 The modem begins to train on the line automatically. When it reaches data mode, the HST-3000 begins gath-ering statistics.
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.
4 Press the Display soft key to view different types of statistics.
If in 4-wire mode, statistics can be viewed for pair 1, pair 2 NOTE:
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 HST-3000 Base Unit User’s Guide.
Testing line quality is complete.
ATM BERT
testing
3
Interpreting Test Results
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 47
– “Error results” on page 48
– “Event log” on page 49
– “Data errors” on page 50
– “Performance results” on page 60
– “Signal results” on page 61
– “Loop status results” on page 61
– “Identity results” on page 63
– “CO requested configs results” on page 64
– “EOC Counters” on page 65
About G.SHDSL results
After 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.
The following result categories are available in G.SDHSL Modem Emulate and Through mode:
– Summary – Errors – Event log – Data
– IP
– Ethernet (through mode only) – Ping
– Trace Route – ATM General – ATM OAM – ATM Channel
– FTP/HTTP (through mode only) – Performance – Signal – Loop status – Identity – CO req. configs – EOC NOTE:
The following sections describe the results in each category.
Summary results
This 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. Table 7 Summary results
Result Description Range Resolution
Interface Shown in the upper right of the screen. It is the cur-rent interface.
N/A N/A
Data mode Shown in the upper right of the screen. It is the cur-rent data mode.
N/A N/A
L1 Stan-dard
Shown in the upper right of the screen. It is the cur-rent layer 1 standard.
N/A N/A
Start Progress
The current initializing state for the modem. A graphical display also indi-cates the modem state.
Error results
This 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. Payload
Rate
User payload rate of the current connection. (depends on physical standard in use)
64–2312 kbps for Anx A, Anx B, and Anx B ANFB 2-wire 192–5696 kbps for AutoPAM Anx A/F and AutoTCPAM Anx B/G 768–5696 kbps for TCPAM32 Anx A/F and TCPAM32 Anx B/G 128–4608 kbps for Anx A, Anx B, and Anx B ANFB 4-wire
N/A
Line Rate Payload Rate + 8 kbps. 72–2320 kbps N/A Local
Mar-gin
SNR margin on the CPE side of the connection.
0–58 dB 0.1dB
Frame Sync Indication of the framer status.
In sync, Out of sync N/A Table 7 Summary results (Continued)
Result Description Range Resolution
Table 8 Error results
Result Description Range Resolution
ES Number of seconds in which one or more CRC
Event log
This category provides a running log of significant modem events and errors.
If in 4-wire mode, the event is labeled with the appropriate pair.
SES Count of seconds in which at least 50 CRC errors occurred or one or more LOSW defects are declared.
0–4294967295 seconds 1 second
UAS Count of unavailable sec-onds, which occurs after 10 contiguous SES
0–4294967295 seconds 1 second
LOSWS Number of seconds in which a LOSW effect occurred
0–4294967295 seconds 1 second
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. (only available on STU-C)
0–4294967295 errors 1 error Table 8 Error results (Continued)
Data errors
This 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.
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
Ethernet results
The Ethernet category provides statistics on Ethernet frames when the HST-3000's 10/100BT Ethernet interface is used in G.SHDSL thru-modes. Table 10 describes the Ethernet results.DNS Domain Name Server. When using internet addresses such as www.jdsu.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. MAC Address Medium access control address. The
physi-cal address of the device on the medium. An example of a MAC address is the 48 bit address of a device on the Ethernet. 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
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.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. Table 10 Ethernet results (Continued)
Result Definition
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
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.
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)
Trace route
results
Table 12 describes the trace route results.
ATM general
results
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.
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
Active Whether there is a trace route currently active
Number of hops The number of points crossed from the source to the destination
Table 13 ATM general results
Result Definition
TX cells Count of transmitted ATM cells. TX AAL5 Frames Count of transmitted ATM Adaptation
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.
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)
ATM OAM
results
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”)
Table 14 describes the ATM OAM results. 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.
ATM channel
results
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 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.
ATM BERT
results
Table 16 describes the ATM BERT results.
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.
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
