Page 2 - Copyright; Copyright © 2002 by ZyXEL Communications Corporation
P841C Central-Side VDSL Modem ii Copyright 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 me...
Page 3 - ZyXEL Limited Warranty; Note
P841C Central-Side VDSL Modem ZyXEL Limited Warranty iii 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 upo...
Page 4 - Interference Statements and Warnings; FCC Interference Statement
P841C Central-Side VDSL Modem iv Interference Statements and Warnings 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...
Page 5 - Customer Support; Contacting Customer Support
P841C Central-Side VDSL Modem Customer Support v 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 represen...
Page 6 - Table of Contents
P841C Central-Side VDSL Modem vi Table of Contents Table of Contents Copyright ...................................................................................................................................................................ii ZyXEL Limited Warranty ...................................
Page 7 - List of Figures
P841C Central-Side VDSL Modem List of Figures vii List of Figures Figure 1-1 Campus Application .................................................................................................................................................. 1-2 Figure 2-1 P841C Front Panel ...........................
Page 8 - List of Tables
P841C Central-Side VDSL Modem viii Lists of Tables List of Tables Table 2-1 P841C LED Descriptions ............................................................................................................................................ 2-1 Table 2-2 P841C Rear Panel Connectors .....................
Page 9 - Preface; About VDSL
P841C Central-Side VDSL Modem Preface ix 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 document...
Page 11 - Compact Design With Integrated Splitters; Management; System Monitoring; Application Example; Chapter 1
P841C Central-Side VDSL Modem Getting to Know the P841C 1-1 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 r...
Page 12 - Figure 1-1 Campus Application
P841C Central-Side VDSL Modem 1-2 Getting to Know the P841C Figure 1-1 Campus Application
Page 13 - Chapter 2
P841C Central-Side VDSL Modem Hardware Connections 2-1 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 The following table describes the LED indicators on the f...
Page 14 - Table 2-2 P841C Rear Panel Connectors
P841C Central-Side VDSL Modem 2-2 Hardware Connections Figure 2-2 P841C Back Panel 2.2.1 Rear Panel Connectors Table 2-2 P841C Rear Panel Connectors CONNECTER DESCRIPTION POWER 12VDC Make sure you are using the correct power source. Connect the female end of the power adapter to the power receptacle...
Page 15 - Chapter 3; Additional Installation Requirements; Figure 3-1 Login Screen; Figure 3-2 Login Screen
P841C Central-Side VDSL Modem Configuring the P841C 3-1 Chapter 3 Configuring the P841C This chapter shows you how to configure and maintain your P841C using the command line interface. 3.1 Additional Installation Requirements In addition to the contents of the package, you need the following hardwa...
Page 16 - Figure 3-3 Wrong Password; System Related Commands; Command; Figure 3-4 Change Password Command
P841C Central-Side VDSL Modem 3-2 Configuring the P841C Figure 3-3 Wrong Password You should change the default password using the passwd command. 3.3 Commands 3.3.1 General Command Conventions References to “LT” and “NT” are common throughout the commands. “LT” means means Line Termination (unit), ...
Page 17 - Figure 3-5 Exit Command; System Timeout
P841C Central-Side VDSL Modem Configuring the P841C 3-3 ZyXEL recommend you change your password after your very first login. Store your new password in a secure place for later reference in case you forget it. 3.4.2 Exit Command exit Enter this command to log out. You will then have to re-enter you...
Page 19 - Figure 3-7 Sys Status Command; Figure 3-8 Upgrading Firmware First Warning
P841C Central-Side VDSL Modem Configuring the P841C 3-5 Table 3-1 P841C Help Commands FIELD DESCRIPTION enet speed (lt|nt) (speed) Type this command to set the Ethernet port speed of the P841C (you must type “lt”) or P841 (“nt”). P841C speed is displayed if you just type “enet speed”. enet fctrl (lt...
Page 20 - Figure 3-9 Upgrade Firmware Last Warning; Example Xmodem Firmware Upload Using HyperTerminal; Transfer; Figure 3-10 Example Xmodem Upload
P841C Central-Side VDSL Modem 3-6 Configuring the P841C Figure 3-9 Upgrade Firmware Last Warning Step 4. Launch your terminal emulation program (see next example ). You should have already downloaded the firmware and unzipped it on your computer. The firmware file has a “bin” extension. Begin the fi...
Page 21 - Table 4-1 VDSL Default Values; Figure 4-1 VDSL Mode
P841C Central-Side VDSL Modem VDSL-Related Commands 4-1 Chapter 4 VDSL- Related Commands This chapter shows you how to configure VDSL using Commands. 4.1 Introduction VDSL-related commands supported by the P841C are shown in Table 3-1. The default values for the following VDSL parameters are: Table ...
Page 22 - Table 4-3 VDSL Mode, Frequency Ranges and Rates; Active; VDSL Uprate and Downrate Commands; Upstream Rates; Figure 4-2 VDSL Upstream Rate; Downstream Rates
P841C Central-Side VDSL Modem 4-2 VDSL-Related Commands Table 4-3 VDSL Mode, Frequency Ranges and Rates VDSL MODE FREQ. RANGE (Hz) RATE (Mbps) 10 Base-S Upstream 4.0M 7.9M 1.56 6.25 9.38 12.50 18.75 Downstream 900K 3.0M 4.17 6.25 8.33 12.50 16.67 ANSI Mode (ANSI/ETSI Band Plan 998) Upstream 4.0M 5.0...
Page 23 - Figure 4-3 VDSL Downstream Rate; Auto; Figure 4-4 VDSL Auto Flag
P841C Central-Side VDSL Modem VDSL-Related Commands 4-3 Figure 4-3 VDSL Downstream Rate Table 4-4 VDSL Rates UPRATE/DOWN RATE UPSTREAM RATE DOWNSTREAM RATE 10BaseS Mode 0 1.56Mbps 4.17Mbps 1 6.25Mbps 6.25Mbps 2 9.38Mbps 8.33Mbps 3 12.50Mbps 12.50Mbps 4 18.75Mbps 16.67Mbps ANSI Mode (ANSI/ETSI Band P...
Page 24 - Figure 4-5 VDSL Status Example
P841C Central-Side VDSL Modem 4-4 VDSL-Related Commands This command makes the P841C loads new VDSL modem code into the P841C (LT) or P841 (NT). If “LT” is specified, the P841C will load the VDSL modem code into the P841C. If “NT” is specified, the P841C will load the VDSL modem code into the P841. ...
Page 25 - Table 4-5 VDSL Status Counters
P841C Central-Side VDSL Modem VDSL-Related Commands 4-5 Table 4-5 VDSL Status Counters FIELD DESCRIPTION VDSL Parameters: All these fields except for DISC are displayed in hexadecimal format. LINK STAT This field displays the link status. The link is up if this field displays 0xac or 0xae; otherwise...
Page 26 - Figure 4-6 VDSL Initialization Messages
P841C Central-Side VDSL Modem 4-6 VDSL-Related Commands Figure 4-6 VDSL Initialization Messages These messages are for debugging purposes only. If you are having problems initializing the VDSL connection, capture this screen and send it to your nearest customer support. 4.1.11 VDSL Monitor Command v...
Page 29 - Chapter 5; Default Settings
P841C Central-Side VDSL Modem Ethernet-Related Commands 5-1 Chapter 5 Ethernet-related Commands This chapter shows you how to configure Ethernet. 5.1 Introduction The P841C has one 10/100Mbps auto-sensing Ethernet port. There are two factors related to Ethernet: speed and duplex mode. In 10/100Mbps ...
Page 31 - Figure 5-2 Ethernet Speed; Figure 5-3 Ethernet Flow Control
P841C Central-Side VDSL Modem Ethernet-Related Commands 5-3 5.1.2 Enet Clear Command enet clear Type this command to clear P841C and the subscriber’s VDSL modem’s Ethernet statistics (if link is up). 5.1.3 Enet Speed (lt|nt) (speed) Command enet speed (lt|nt) (speed) Type this command to set the Eth...
Page 33 - Table 6-1 Troubleshooting the VDSL LED; Data Transmission; Table 6-2 Troubleshooting Data Transmission; Chapter 6
P841C Central-Side VDSL Modem Troubleshooting 6-1 This chapter covers potential problems and possible remedies. After each problem description, some steps are provided to help you diagnose and solve the problem. 6.1 VDSL LED The VDSL LED is not on. Table 6-1 Troubleshooting the VDSL LED STEPS CORREC...
Page 34 - Intermittent VDSL LED; Table 6-3 Troubleshooting a Non-Constant VDSL LED; Table 6-5 Troubleshooting the Password; Connecting to an Ethernet Switch; Table 6-6 Troubleshooting Connecting to an Ethernet Switch
P841C Central-Side VDSL Modem 6-2 Troubleshooting 6.3 Intermittent VDSL LED A VDSL LED turns on and off intermittently. Table 6-3 Troubleshooting a Non-Constant VDSL LED STEPS CORRECTIVE ACTION 1 Disconnect the phone wire coming from the VDSL port of the P841C and connect the subscriber’s VDSL modem...
Page 37 - Power Adapter Specifications
P841C Central-Side VDSL Modem Power Adapter Specifications A Power Adapter Specifications NORTH AMERICA AC Power Adapter model AD48-1201200DUY AC Power Adapter model DV-121A2-5720 Input power: AC120Volts/60Hz/0.25A Input power: AC120Volts/60Hz/27VA Output power: DC12Volts/1.2A Output power: DC12Volt...
Page 39 - Index
P841C Central-Side VDSL Modem Index C Index 1 10 Base-S ................................................. 4-8 10Base-S ...........................................4-7, 4-9 10Base-S Mode ........................................ 1-1 A ALGM_ERR ............................................ 5-2 ANSI Mode ...
