Manuale d’uso / di manutenzione del prodotto P841C del fabbricante ZyXEL Communications
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P841C Central-Side VDSL Modem May 20 0 2 Version 1.00 User’s Guide.
P841C Central-Side VDSL Modem ii Copyright Copyright Copyright © 2002 by ZyXEL Co mmunications Corporation The contents of this publication may not be reproduced in any part or as a whole, transcribe.
P841C Central-Side VDSL Modem ZyXEL Limited Warranty iii ZyXEL Limited W arranty 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.
P841C Central-Side VDSL Modem iv Interference Statements and Warning s Interference Statements and Warnings FCC Interference St atement 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.
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 on.
P841C Central-Side VDSL Modem vi Table of Contents T able of Content s Copyri ght ...................................................................................................................... ............................................. ii ZyXEL Limit ed Wa rr anty .
P841C Central-Side VDSL Modem List of Figures vii List of Figures Figure 1-1 Campus Application .................................................................................................. ................................................ 1-2 Figure 2-1 P841 C Front Panel .
P841C Central-Side VDSL Modem viii Lists of Tables List of T ables T able 2-1 P841C LED Descriptions ............................................................................................... ............................................. 2-1 T able 2-2 P841C Rear Panel Co nnectors .
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 discu sses the organization and conventions of this user’s guide. It also provides inform ation on other related documentation.
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P841C Central-Side VDSL Modem Getting to Know the P841C 1-1 This chapter describes the key features, benefits and applica tions of your P841C. The P841C is a VDSL Line Termination (LT) modem that is the perfect partner for the P841 VDSL subscriber modem.
P841C Central-Side VDSL Modem 1-2 Getting to Know the P841C Figure 1-1 Campus Application.
P841C Central-Side VDSL Modem Hardware Conne ctions 2-1 This chapter gives a brief introductio n to the P841C hardware. 2.1 Front Panel The following figure shows the front panel of the P84 1C. Figure 2-1 P841C Front Panel 2.1.1 Front Panel LEDs The following table describes the LED indi cators on the front panel of the P841C.
P841C Central-Side VDSL Modem 2-2 Hard ware Connections Figure 2-2 P841C Back Panel 2.2.1 Rear Panel Connectors Table 2-2 P841C Rear Panel Connectors CONNECTER DESC RIPTION POWER 12VDC Make sure you are using the correct power source. Connect the female end of the power adapter to the power rece ptacle on the rear panel of your P841C.
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 int erface.
P841C Central-Side VDSL Modem 3-2 Configuring the P841C Figure 3-3 Wrong Password Y ou should change the default p assword using the p asswd command. 3.3 Commands 3.3.1 General Command Conventions References to “LT” and “NT” are common throughout the comman ds.
P841C Central-Side VDSL Modem Configuring the P841C 3-3 ZyXEL recommend y ou change your pass w ord af ter your very first login. S tore your new p assword in a secure place for later reference in case you forget it. 3.4.2 Exit Command exit Enter this command to log out.
P841C Central-Side VDSL Modem 3-4 Configuring the P841C Table 3-1 P841C Help Commands FIELD DESCRIPTION System-related Command s sys Entering this command displays the sy stem status. help or ? Entering this command shows the Hel p screen displayed exit Enter this command to log out of command mode.
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 spe ed is displayed if you just type “enet speed”.
P841C Central-Side VDSL Modem 3-6 Configuring the P841C Figure 3-9 Upgrade Firmware Last Warning Step 4. Launch your terminal em ulation progra m (see next example ). You should have already downloaded the firmware and unzipped it on your computer. The firm ware file has a “bin” extension.
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.
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.
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 12.50Mb ps 4 18.
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.
P841C Central-Side VDSL Modem VDSL-Related Commands 4-5 Table 4-5 VDSL Status Counters FIELD DESCRIPTION VDSL Parameters: All these fields except fo r 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 the link is down.
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 ar e having problems initializing the VDSL connection, capture this screen and send it to your nearest customer support.
P841C Central-Side VDSL Modem VDSL-Related Commands 4-7 This command displays your P841C settings as shown in the next example. Figure 4-8 VDSL Show Command Table 4-6 VDSL Show Command FIELD DESCRIPTION EXAMPLE vdsl mode This field displays the VDSL mode.
P841C Central-Side VDSL Modem 4-8 VDSL-Related Commands FIELD DESCRIPTION EXAMPLE vdsl auto upgrade NT EEPROM flag This field shows the VDSL auto upgrade status (“on” or “off”). When auto upgrade is on, the P841C wi ll check the subscriber’s modem V DSL version and automatically upgrade it if it is an earlier version than the P841C’s.
P841C Central-Side VDSL Modem Ethernet-Related Comma nds 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. T here are two factors related to Ethernet: speed and duplex mode.
P841C Central-Side VDSL Modem 5-2 Ethernet-Related Comma nds Type this command to display P841C and the subscriber ’s VDSL modem ’s Eth ernet statistics (if link is up). Figure 5-1 Ethernet Status Table 5-1 Ethernet Status Counters COUNTER MEANI NG ALGM_ERR This is the number of frames re ceived with alignment errors (odd number of nibbles).
P841C Central-Side VDSL Modem Ethernet-Related Comma nds 5-3 5.1.2 Enet Clear Command enet clear Type this command to clear P841C and the subscriber’s VDSL m odem’s Ethernet statistics (if link is up).
P841C Central-Side VDSL Modem 5-4 Ethernet-Related Comma nds When this flag is on this command automatically di splays the P841C (and the subscriber’s VDSL modem’s Ethernet statistics if the link is up) every five seconds. Enter the command without “on” or “off” to just show the Ethernet monitor status.
P841C Central-Side VDSL Modem Troubleshooting 6-1 This chapter covers potential problem s and possible remedies. After each problem description, some steps are provided to help you diagnose and solve the problem.
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 Disc.
P841C Central-Side VDSL Modem Troubleshooting 6-3 Table 6-6 Troubleshooting Connecting to an Ethernet Switch STEPS CORRECTIVE ACTION Speed: Auto Duplex: Auto Flow control: On for full dupl.
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P841C Central-Side VDSL Modem Power Adapter Specifications A Power Adapter S pecifications NORTH AMERICA AC Power Adapter model AD48 -1201200DUY AC Powe r Adapter model DV-121A2-5720 Input power: AC120Volts/60Hz/0.25A Input power: AC120Volts/60Hz/27VA Output power: DC12Volts/1.
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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 ..........
P841C Central-Side VDSL Modem D Index I Intermittent VDSL LED ...........................6-2 Introducing the SMT ................................3-1 L LAN 10/100M .......................................... 2-2 LA TE_COL ...............................
P841C Central-Side VDSL Modem Index E TXBCNT .................................................. 5-2 TXP AUS................................................... 5-2 TXPWR .................................................. 4-1 1 U US.....................
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il ZyXEL Communications P841C è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del ZyXEL Communications P841C - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso ZyXEL Communications P841C imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul ZyXEL Communications P841C ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il ZyXEL Communications P841C, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del ZyXEL Communications P841C.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il ZyXEL Communications P841C. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo ZyXEL Communications P841C insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
