ZyXEL Communications P841C User Manual

P841C

Central-Side VDSL Modem

May 2002

Version 1.00

User’s Guide

P841C Central-Side VDSL Modem

Copyright

Copyright © 2002 by ZyXEL Communications Corporation

The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval
system, translated into any language, or transmitted in any form or by any means, electronic, mechanical,
magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL
Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or software described
herein. Neither does it convey any license under its patent rights nor the patents rights of others. ZyXEL further
reserves the right to make changes in any products described herein without notice. This publication is subject to
change without notice.

Trademarks

Trademarks mentioned in this publication are used for identification purposes only and may be properties of their
respective owners.

ii Copyright

P841C Central-Side VDSL Modem

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or
workmanship for a period of up to two (2) years from the date of purchase. During the warranty period and upon
proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials,
ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either
parts or labor and to whatever extent it shall deem necessary to restore the product or components to proper
operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of
equal value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product is
modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is
in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for
a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any
kind of character to the purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material Authorization
number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be insured when
shipped. Any returned products without proof of purchase or those with an out-dated warranty will be repaired or
replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced
products will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty gives you
specific legal rights, and you may also have other rights that vary from country to country.

ZyXEL Limited Warranty iii

P841C Central-Side VDSL Modem

Interference Statements and Warnings

FCC Interference Statement

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference.

(2) This device must accept any interference received, including interference that may cause undesired operations.

FCC Warning

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
commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which
case the user will be required to correct the interference at his own expense.

CE Mark Warning:

This is a Class B product. In a domestic environment this product may cause radio interference in which case the
user may be required to take adequate measures.

Taiwanese BCIQ A Warning:

VCCI Class B Warning

Certifications

Refer to the product page at www.zyxel.com.

iv Interference Statements and Warnings

P841C Central-Side VDSL Modem

Customer Support

If you have questions about your ZyXEL product or desire assistance, contact ZyXEL Communications
Corporation offices worldwide, in one of the following ways:

Contacting Customer Support

When you contact your customer support representative, have the following information ready:

♦ Product model and serial number.
♦ Firmware version information.
♦ Warranty information.
♦ Date you received your product.
♦ Brief description of the problem and the steps you took to solve it.

METHOD E-MAIL: SUPPORT TELEPHONE WEB SITE

LOCATION SALES FAX FTP SITE

WORLDWIDE

AMERICA

MALAYSIA

[e-mail] [phone] www.zyxel.com

www.europe.zyxel.com

[e-mail]

[e-mail] [phone]

[e-mail]

[e-mail] [phone] www.zyxel.dk SCANDINAVIA

[e-mail] [phone] ftp.zyxel.dk

[e-mail] [phone] www.zyxel.de GERMANY

[e-mail] [phone]

[e-mail]

[e-mail]

[phone] ftp.europe.zyxel.com

www.zyxel.com NORTH

800-255-4101

[phone] ftp.zyxel.com

[phone]

[phone]

www.zyxel.com.my

REGULAR MAIL

ZyXEL Communications
Corp., 6 Innovation Road
II, Science-Based
Industrial Park, HsinChu,
Taiwan 300, R.O.C.

ZyXEL Communications
Inc., 1650 Miraloma
Avenue, Placentia, CA
92870, U.S.A.

ZyXEL Communications
A/S, Columbusvej 5, 2860
Soeborg, Denmark.

ZyXEL Deutschland
GmbH. Adenauerstr.
20/A4 D-52146
Wuerselen, Germany.

Lot B2-06, PJ Industrial
Park, Section 13, Jalan
Kemajuan, 46200
Petaling Jaya Selangor
Darul Ehasn, Malaysia

Customer Support v

P841C Central-Side VDSL Modem

Table of Contents

Copyright ...................................................................................................................................................................ii

ZyXEL Limited Warranty...........................................................................................................................................iii

Interference Statements and Warnings ....................................................................................................................iv

Customer Support .................................................................................................................................................... v

Preface .....................................................................................................................................................................ix

Chapter 1 Getting to Know the P841C................................................................................................................................. 1-1

1.1 Features..................................................................................................................................................... 1-1

1.2 Application Example .................................................................................................................................. 1-1

Chapter 2 Hardware Connections........................................................................................................................................ 2-1

2.1 Front Panel ................................................................................................................................................ 2-1

2.2 Back Panel................................................................................................................................................. 2-1

Chapter 3 Configuring the P841C ........................................................................................................................................ 3-1

3.1 Additional Installation Requirements ......................................................................................................... 3-1

3.2 Login Screen..............................................................................................................................................3-1

3.3 Commands ................................................................................................................................................3-2

3.4 System Related Commands......................................................................................................................3-2

Chapter 4 VDSL- Related Commands ................................................................................................................................. 4-1

4.1 Introduction ................................................................................................................................................ 4-1

Chapter 5 Ethernet-related Commands............................................................................................................................... 5-1

5.1 Introduction ................................................................................................................................................ 5-1

Chapter 6 Troubleshooting .................................................................................................................................................. 6-1

6.1 VDSL LED..................................................................................................................................................6-1

6.2 Data Transmission.....................................................................................................................................6-1

6.3 Intermittent VDSL LED ..............................................................................................................................6-2

6.4 Data Rate................................................................................................................................................... 6-2

6.5 Password ................................................................................................................................................... 6-2

6.6 Connecting to an Ethernet Switch ............................................................................................................. 6-2

Power Adapter Specifications...................................................................................................................................A

Index .........................................................................................................................................................................C

vi Table of Contents

P841C Central-Side VDSL Modem

List of Figures

Figure 1-1 Campus Application ..................................................................................................................................................1-2

Figure 2-1 P841C Front Panel.....................................................................................................................................................2-1

Figure 2-2 P841C Back Panel .....................................................................................................................................................2-2

Figure 3-1 Login Screen..............................................................................................................................................................3-1

Figure 3-2 Login Screen..............................................................................................................................................................3-1

Figure 3-3 Wrong Password........................................................................................................................................................3-2

Figure 3-4 Change Password Command .....................................................................................................................................3-2

Figure 3-5 Exit Command...........................................................................................................................................................3-3

Figure 3-6 P841C Help Commands ............................................................................................................................................3-3

Figure 3-7 Sys Status Command.................................................................................................................................................3-5

Figure 3-8 Upgrading Firmware First Warning...........................................................................................................................3-5

Figure 3-9 Upgrade Firmware Last Warning...............................................................................................................................3-6

Figure 3-10 Example Xmodem Upload ......................................................................................................................................3-6

Figure 4-1 VDSL Mode...............................................................................................................................................................4-1

Figure 4-2 VDSL Upstream Rate ................................................................................................................................................ 4-2

Figure 4-3 VDSL Downstream Rate ...........................................................................................................................................4-3

Figure 4-4 VDSL Auto Flag........................................................................................................................................................4-3

Figure 4-5 VDSL Status Example...............................................................................................................................................4-4

Figure 4-6 VDSL Initialization Messages...................................................................................................................................4-6

Figure 4-7 VDSL Monitor...........................................................................................................................................................4-6

Figure 4-8 VDSL Show Command .............................................................................................................................................4-7

Figure 5-1 Ethernet Status...........................................................................................................................................................5-2

Figure 5-2 Ethernet Speed...........................................................................................................................................................5-3

Figure 5-3 Ethernet Flow Control ...............................................................................................................................................5-3

Figure 5-4 Ethernet Monitor Status.............................................................................................................................................5-4

Figure 5-5 Enet Monitor Statistics ..............................................................................................................................................5-4

List of Figures vii

P841C Central-Side VDSL Modem

List of Tables

Table 2-1 P841C LED Descriptions............................................................................................................................................ 2-1

Table 2-2 P841C Rear Panel Connectors .................................................................................................................................... 2-2

Table 3-1 P841C Help Commands.............................................................................................................................................. 3-4

Table 3-2 Sys Status Command .................................................................................................................................................. 3-5

Table 4-1 VDSL Default Values.................................................................................................................................................. 4-1

Table 4-2 VDSL Mode................................................................................................................................................................ 4-1

Table 4-3 VDSL Mode, Frequency Ranges and Rates................................................................................................................ 4-2

Table 4-4 VDSL Rates ................................................................................................................................................................ 4-3

Table 4-5 VDSL Status Counters ................................................................................................................................................ 4-5

Table 4-6 VDSL Show Command............................................................................................................................................... 4-7

Table 5-1 Ethernet Status Counters............................................................................................................................................. 5-2

Table 5-2 Enet Monitor Statistics................................................................................................................................................ 5-4

Table 6-1 Troubleshooting the VDSL LED.................................................................................................................................6-1

Table 6-2 Troubleshooting Data Transmission............................................................................................................................6-1

Table 6-3 Troubleshooting a Non-Constant VDSL LED ............................................................................................................6-2

Table 6-4 Troubleshooting the SYNC-rate..................................................................................................................................6-2

Table 6-5 Troubleshooting the Password ....................................................................................................................................6-2

Table 6-6 Troubleshooting Connecting to an Ethernet Switch.................................................................................................... 6-2

viii Lists of Tables

P841C Central-Side VDSL Modem

Preface

Congratulations on your purchase of the Prestige 841C Central-Side VDSL Modem.

This preface introduces you to the Prestige 841C and discusses the organization and conventions of this user’s
guide. It also provides information on other related documentation.

About VDSL

VDSL (Very high bit rate Digital Subscriber Line) is one type of DSL with very high data rates. The service can be
asymmetrical or symmetrical and can be used on the same wire as the POTS (Plain Old Telephone Service)
network and ISDN in conjunction with voice services.

About the P841C

The Prestige 841C is the ideal VDSL Line Termination (LT) modem for telephone companies. It maps one Ethernet
link to one VDSL link effectively extending Ethernet service up to 1.5km The Prestige 841C attains speeds ranging
from 1.56 Mbps to 16.67 Mbps upstream and 4.17 Mbps to 16.67 Mbps downstream at distances of up to 1.5 Km
(5,000 feet) over ordinary telephone lines.

General Syntax Conventions

• “Enter” means for you to type one or more characters and press the carriage return. “Select” or “Choose”
means for you to select one from the predefined choices.

• For brevity’s sake, we will use “e.g.” as shorthand for “for instance”, and “i.e.” as shorthand for “that is” or “in
other words” throughout this manual.

• The Prestige 841C may be referred to as the P841C throughout this manual.

Related Documentation

ZyXEL Web Site

The ZyXEL web site at www.zyxel.com contains an online glossary of networking terms and a download library
with additional support documentation.

Preface ix

P841C Central-Side VDSL Modem

Chapter 1

Getting

This chapter describes the key features, benefits and applications of your P841C.

The P841C is a VDSL Line Termination (LT) modem that is the perfect partner for the P841 VDSL subscriber
modem. It maps traffic from one VDSL (Very high bit rate Digital Subscriber Line) subscriber to one 10/100M
Ethernet that connects to a computer or LAN switch. It has built-in POTS/ISDN splitters and a console port for
local management.

to Know the P841C

1.1 Features

Compact Design With Integrated Splitters

The P841C is just 18cm x 12.6cm x 3cm (Width, Depth, Height) in size. Because of built-in POTS/ISDN splitters,
you do not have to allocate extra space for external splitters that separate voice-band and DSL signals.

10/100 Mbps Fast Ethernet Port

The 10/100 Mbps Fast Ethernet port allows you to connect it to a LAN switch.

VDSL Modes and Rates

The P841C supports the following DSLAM VDSL modes.

• 10BaseS mode giving upstream rates from 1.56 Mbps to 18.75 Mbps and downstream rates of 4.17
Mbps Kbps to 16.67 Mbps.

• ANSI Mode giving upstream rates from 1.56 Mbps to 6.25 Mbps and downstream rates of 4.17 Mbps
to 16.67 Mbps.

• ETSI Mode giving upstream rates from 1.56 Mbps to 6.25 Mbps and downstream rates of 4.17 Mbps
to 12.50Mbps.

Management

Command-line interface

System Monitoring

System status (link status, rates, statistics counters)

1.2 Application Example

The following diagram depicts a typical application of the P841C VDSL line termination modem working
together with the P841 VDSL subscriber modem in a campus setting. With the built-in splitters, VDSL service
can coexist with voice service on the same line.

Getting to Know the P841C 1-1

P841C Central-Side VDSL Modem

Figure 1-1 Campus Application

1-2 Getting to Know the P841C

P841C Central-Side VDSL Modem

Chapter 2

Hardware

This chapter gives a brief introduction to the P841C hardware.

2.1 Front Panel

The following figure shows the front panel of the P841C.

Figure 2-1 P841C Front Panel

2.1.1 Front Panel LEDs

Connections

The following table describes the LED indicators on the front panel of the P841C.

Table 2-1 P841C LED Descriptions

LED COLOR STATUS DESCRIPTION

PWR Green ON

OFF

LAN 10 M Green Blinking

ON

OFF

LAN 100 M Yellow Blinking

ON

OFF

VDSL Green Blinking

ON

OFF

The system is turned on.

The system is off.

The system is transmitting/receiving to/from a 10 Mbps Ethernet network.

The link to a 10 Mbps Ethernet network is up.

The link to a 10 Mbps Ethernet network is down.

The system is transmitting/receiving to/from a 100 Mbps Ethernet network.

The link to a 100 Mbps Ethernet network is up.

The link to a 100 Mbps Ethernet network is down.

The system is transmitting/receiving to/from the VDSL modem.

The link to the VDSL modem is up.

The link to the VDSL modem is down.

2.2 Back Panel

The following figure shows the back panel of the P841C.

Hardware Connections 2-1