ZyXEL P841C User's Manual
Contents
1. vdsl mode mode This command displays the VDSL mode if you don t type a mode and sets it if you do vdsl active on off Use this command to activate or deactivate VDSL vdsl autoupg Type this command to show the VDSL auto upgrade status without on or off or turn on off on off auto upgrade When auto upgrade is on the P841C will check the subscribers modem VDSL version and automatically upgrade it if it is an earlier version than the P841C s Ethernet related Commands enet status Type this command to display P841C and the subscribers VDSL modem s Ethernet statistics if link is up enet clear Type this command to clear P841C and the subscribers VDSL modem s Ethernet statistics if link is up 3 4 Configuring the P841C P841C Central Side VDSL Modem Table 3 1 P841C Help Commands FIELD DESCRIPTION enet speed It nt Type this command to set the Ethernet port speed of the P841C you must type It or P841 speed nt P841C speed is displayed if you just type enet speed enet fctrl It nt Type this command to set the Ethernet port full duplex flow control of the P841C you must on off type It or P841 nt P841C full duplex flow control is displayed if you just type enet fctrl enet monitor Display P841C and the subscriber s VDSL modem s Ethernet statistics if link is up if this flag on off is on 3 4 4 Sys Status Command Type sys to display t2. TE OAS Sa ASS HSA h GAS EE E RR ES ATA VCCI Class B Warning ARES ds WC LORS 350453 3 PARP RBOT CORE BERET SATA CH Pcl ok CORED IS TOF VEE AE MEL TE tc PED FOE T DER ACT PLONE AGEL peo Certifications Refer to the product page at www zyxel com iv Interference Statements and Warnings P841C Central Side VDSL Modem Corporation offices worldwide in one of the following ways Contacting Customer Support Customer Support If you have questions about your ZyXEL product or desire assistance contact ZyXEL Communications 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 LOCATION WORLDWIDE NORTH AMERICA SCANDINAVIA GERMANY MALAYSIA E MAIL SUPPORT SALES support zyxel com tw sales zyxel com tw support zyxel com sales zyxel com support zyxel dk sales zyxel dk support zyxel de sales zyxel de TELEPHONE FAX 886 3 578 3942 886 3 578 2439 1 714 632 0882 800 255 4101 1 714 632 0858 45 3955 0700 45 3955 0707 49 2405 6909 0 49 2405 6909 99 WEB SITE FTP SITE www zyxel com www europe zyxel com ftp europe zyxel com www zyxel com ftp zyxel com www zyxel dk ftp zyxel dk www zyxel de REG
3. long 010 0 4 13 M MACRX BRE Instar e RUE 5 2 Modem Code 4 11 MS E 4 11 EE E EE 5 2 N Network Interface Card 3 1 NC See Network Interface Card NT Network Termination 3 2 O RI e E 5 2 TO iron den eiiis e rit dS 5 2 P Dd EE 1 1 NH ix NEE BEE 3 2 Password 3 1 3 2 6 2 E 2 2 POCO ti nat ec ette teg 4 11 POWER O 4 11 Power Adapter maricensis A PSD EEN 4 11 PWR E 2 1 R Rear Panel Connections Rear Panel 415 inet 2 2 IecOnnect iii oia 3 4 Related Documentation ix COM A iii RS EE 4 11 RXBCNT adstat is 5 2 RXPAUNS 526g mime peer 5 2 S EIERE iii SeLVICES eet iesen deene V SINGLES OL anis adeo genes 5 2 sleep mode 4 13 INR 4 11 Splitters Integrated Splitters 1 1 SYNG rate iui deae 6 2 Syntax Convention ix SyS US E 3 5 system related commandis 3 2 System Tumeout eee essee1eseeee 3 3 T Terminal emulation ococoncnnnncninnnn m 3 1 Terminal Emulatpon 3 1 TX DEEP nodis i du sudes 5 2 Index P841C Central Side VDSL Modem TXBONT eseeeeeceeeenee eene 5 2 vdsl mode 3 4 4 7 4 13 TAPAUS EE 5 2 VISE Mode 4 7 4 8 FAP WR rehus 4 11 VDSL MOU eiri o a 1 1 a ADHS Rates nte teet 4 8 4 9 VR 45e cias 3 4 4 12 US Cem tilde 4 11 VSI Status ihe teen 3 4 4 10 V KO Klee 3 4 VDL NRI NONE 1 1 WOO WEE 3 1 ME tee 1X Z vdsl active oocnnnnonoconccicnnnnannnnos 3 2 3 4 4 8
4. 0x50 VDSL Mode 10BaseS 0 Reset VDSL Chip Password Figure 3 1 Login Screen For your first login enter the default password 1234 As you enter the password the screen displays an for each character you type You see the P841C prompt after a successful login Password P841C gt Figure 3 2 Login Screen If you type a wrong password you will see the following screen Configuring the P841C 3 1 P841C Central Side VDSL Modem P841C gt Wrong Password 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 which is the P841C VDSL central office side modem NT means Network Termination unit which is the subscriber s VDSL modem P841 3 3 2 Command Syntax Conventions e Command keywords are in regular courier font and should be typed in as they appear or in abbreviated form see the next section e Optional fields parameters in a command are enclosed in brackets For example P841C vdsl active on off e The symbol is shorthand for the word or For example vdsl debug on off 3 4 System Related Commands Help exit passwd sys and fwupgrade are the system related commands 3 4 1 Passwd Command passwd Use this com
5. 34 08dB DS 4 17Mbps SNR 43 08dB 18 VDSL US PSD 55 69dBm Hz 946 DS PSD 57 00dBm Hz 813 18 Change Link Watchdog Timer 19 Goto State 2 19 State 2 Check NT EEPROM patch setup target rate 19 Remote VDSL Product Name Prestige 841 19 NT EEPROM exists 19 NT patch signature 0x55 0x51 0x32 19 EEPROM auto upgrade disabled skip upgrade check 19 Try to connect target rate US 4 DS 4 19 Write parameters to NT 23 3 Long Loop Set NT M TX 1 24 Write parameters to LT 24 Goto State 3 25 State 3 Wait to connect target rate 25 Target rate connected 1115 ms 25 VDSL US 18 75Mbps SNR 31 52dB DS 16 67Mbps SNR 43 42dB 26 VDSL US PSD 55 69dBm Hz 946 DS PSD 57 00dBm Hz 813 26 Change NT LWDT to 5 sec 26 Goto State 4 27 State 4 Connect State 27 LT PHY Reg 0 Changed Should be 3100 Read 0 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 vdsl monitor on off Type this command to show the VDSL monitor flag status without on or off or turn on off the VDSL monitor flag When this flag is set on and the VDSL link is up VDSL parameters are automatically displayed every five seconds seconds P841C vdsl monitor on P841C gt 124 US 18 75M SNR 31 85dB DS 16 67M SNR 41 08dB RSERR 0 DISC 0 127
6. Margin Average DS SNR 0 00dB 00dB DS Noise Margin US RS ERR 0 0 US Total RS ERR DS RS ERR 0 O DS Total RS ERR LT Power Parameters TXPWR 0x32d POCO 0x0 POWER 5 70 dBm PSD 55 27 dBm Hz 0000 0000 0 0 0 0 Figure 4 5 VDSL Status Example 4 4 VDSL Related Commands P841C Central Side VDSL Modem 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 Oxac or Oxae otherwise the link DISC This is a VDSL Disconnect counter Modem Code This field displays information about the modem code VDSL Line Quality Status US This is the VDSL UpStream rate The constellations are QAM 4 QAM 8 QAM 16 QAM 64 QAM 256 where QAM Quadrature Amplitude Modulation defines how many bits there are per symbol for example QAM 4 means 2 bits per symbol 27 QAM 8 3 bits 2 per symbol and so on Int Interpolation defines how fast the symbols go through the line It is equal to 25 0MHz baud rate so for example Int 8 25 0 8 Mbaud Rate is the VDSL raw speed and Fc is the carrier frequency DS This is the VDSL DownStream rate SNR The higher the SNR Signal to Noise Ratio number the better SNR Signal to Noise Ratio is the ratio of the amplitude of the desired signal to the amplitude of noise signals at a given
7. from 0 to 4 as defined in the next table This command sets the upstream VDSL rate if you set a rate and displays the rate if you don t If you set a new rate you must use vdsl reset or vdsl reconnect command to reconnect P841C gt vdsl uprate vdsl upstream rate 1562500 bps 0 Figure 4 2 VDSL Upstream Rate Downstream Rates vdsl downrate downrate downrate is an integer from 0 to 4 defined in the next table This command sets the upstream VDSL rate if you set a rate and displays the rate if you don t If you set the rate you must use vdsl reset or vdsl reconnect command to make VDSL reconnect 4 2 VDSL Related Commands P841C Central Side VDSL Modem P841C vdsl downrate vdsl downstream rate 4166667 bps 0 Figure 4 3 VDSL Downstream Rate Table 4 4 VDSL Rates UPRATE DOWN UPSTREAM RATE DOWNSTREAM RATE RATE 10BaseS Mode ANSI Mode ANSI ETSI Band Plan 998 ETSI Mode ETSI Band Plan 997 4 1 4 VDSL Auto Command vdsl auto on off This command turns the VDSL auto flag on or off Type vds1 auto to show the current VDSL auto flag status without on or off When this flag is on the P841C automatically negotiates upstream and downstream rates up to the values set using the upstream and downstream commands just described P841C gt vdsl auto vdsl auto flag on Figure 4 4 VDSL Auto Flag 4 1 5 VDSL Load Command vdsl load 1t nt VDSL Related Commands 4 3 P841C
8. m ZyXEL Limited Warranty iii vdsl debug 3 2 3 4 4 11 4 13 INOUE eere ER 111 vdsl downrate c ooooocncoccocononononnnonn nono nonn conos 3 4 f ZyXEL Web Ste ix V DSISLED nata nde 6 1 Index E
9. of the P841C are o Speed Auto o Duplex Auto o Flow control On for full duplex and off for half duplex Use a crossover Ethernet cable to connect the P841C to a switch Use a straight through Ethernet cable to connect to a computer Ethernet related commands supported by the P841C are shown in Table 3 1 5 1 1 Enet Status Command enet status Ethernet Related Commands 5 1 P841C Central Side VDSL Modem Type this command to display P841C and the subscriber s VDSL modem s Ethernet statistics if link is up P841C gt enet status T PHY LSI 80225 T Ethernet speed Link Down LT Ethernet Counters ALGM_ERR 0 LATE COL 0 FTL ER BCF RXBCNT NT Ethernet Counters SINGI EXC FCS RXPA TX DEF CS ERR ORO 0 TXBCNT ALGM ERR LATE COL FTL ER BCF RXBCNT P841C gt 0 0 SINGLE_COL EXC_COL FCS ERR RXPA US CS_ERR ORO 0 TXBCNT 0 TX DEF 0 Figure 5 1 Ethernet Status Table 5 1 Ethernet Status Counters COUNTER MEANING ALGM_ERR This is the number of frames received with alignment errors odd number of nibbles SINGLE COL JA count of successfully transmitted frames for which transmission is inhibited by exactly one collision MUL COL A count of successfully transmitted frames for which transmission was inhibited by more than one collision LATE COL The number of times that a coll
10. on or off or turn on off auto upgrade When auto upgrade is on the P841C will check the subscriber s modem VDSL modem code version and automatically upgrade it if it is an earlier version than the P841C s 4 8 VDSL Related Commands P841C Central Side VDSL Modem 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 Fast Ethernet the speed can be 10Mbps or 100Mbps and the duplex mode can be half duplex or full duplex The auto negotiation capability makes one Ethernet port able to negotiate with a peer automatically to obtain the connection speed and duplex mode that both ends support When auto negotiation is turned on the Ethernet port of the P841C negotiates with the peer automatically to determine the connection speed and duplex mode If the peer Ethernet port does not support auto negotiation or turns off this feature the P841C determines the connection speed by detecting the signal on the cable and using half duplex mode When the P841C s auto negotiation 1s turned off an Ethernet port uses the pre configured speed and duplex mode when making a connection thus requiring you to make sure that the settings of the peer Ethernet port are the same in order to connect Default Settings The factory default settings for the Ethernet port
11. 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 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 Seu
12. 2 Ethernet Related Commands P841C Central Side VDSL Modem 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 It nt speed Command enet speed 1t nt speed Type this command to set the Ethernet port speed of the P841C with It or P841 with nt P841C speed is displayed if you just type enet speed P841C gt enet speed enet speed LT Auto Figure 5 2 Ethernet Speed Speed index number Speed Flow Control 0 Auto Negotiation 1 10 Mbits s Half Duplex 2 10 Mbits s Full Duplex 3 100Mbits s Half Duplex 4 100Mbits s Full Duplex 5 1 4 Enet full duplex Fctrl nt on off Command enet full duplex fctrl 1t nt on off Type this command to set the Ethernet port flow control or show the Ethernet port flow control status without on or off By default flow control is on for full duplex Ethernet connections and off for half duplex Ethernet connections P841C gt enet fctrl enet full duplex flow control LT on Figure 5 3 Ethernet Flow Control 5 1 5 Enet Monitor on off Command enet monitor on off Ethernet Related Commands 5 3 P841C Central Side VDSL Modem When this flag is on this command automatically displays 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 t
13. Central Side VDSL Modem 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 The VDSL connection should automatically reconnect after the new VDSL modem code has been successfully loaded 4 1 6 VDSL Reset Command vdsl reset This command causes a software reset to the VDSL Chip local or remote The VDSL link first disconnects before the channel resets 4 1 7 VDSL Reconnect Command vdsl reconnect This command forcibly causes the P841C to reconnect the VDSL link 4 1 8 VDSL Status Command vdsl status This command shows the VDSL status register values as shown in the next example Information in these fields is mainly for debugging purposes SNR MSE and RS ERR are polled every three seconds Total RS ERR are counted during the connection SNR MSE RS ERR and Total RSERR are cleared after the VDSL is link up P841C gt vdsl status VDSL Parameters LINK STAT 0x00 DISC Modem Code 0x50 N A L Line Quality Status QAM 4 Int 32 Rate 1562500 bps fc 4467773 Hz QAM 16 Int 24 Rate 4166666 bps fc 1831054 Hz SNR 0 00 0 00 0 00 A 0 00 0 00 0 00 dB MSE 0 00 0 00 0 00 0 00 0 00 0 00 dB SNR 0 00 0 00 0 00 0 00 0 00 0 00 dB MSE 0 00 0 00 0 00 4 0 00 0 00 0 00 dB 0 0 uon wg od Average US SNR 0 00dB 00dB US Noise
14. DSL port of the P841C using a different telephone wire If the LED turns on check for a problem with the building s phone wire 2 Set the VDSL modem to auto negotiate If this is not possible set it to 100 Mbps half duplex mode Use the VDSL commands to reset and reconnect the VDSL channel see sections 4 1 6 and 4 1 7 Log into the P841C enter the VDSL debug command see section 4 1 10 take screen shots of this information and send it to your nearest customer support representative 5 If the LED remains off contact the distributor 6 2 Data Transmission The VDSL LED is on but data cannot be transmitted Table 6 2 Troubleshooting Data Transmission STEPS CORRECTIVE ACTION Disconnect the phone wire coming from the VDSL port of the P841C and connect the VDSL modem or router directly to the VDSL port of the P841C using a different telephone wire If data can be transmitted check for a problem with the building s phone wire Check to see that you are using the correct VDSL mode see section 4 1 1 Use the VDSL commands to reset and reconnect the VDSL channel see sections 4 1 6 and 4 1 7 4 Connect the VDSL modem or router to another P841C VDSL port If the VDSL modem or router works with a different P841C then there may be a problem with the original P841C Contact the distributor 5 If using a different P841C does not work try a different subscriber VDSL modem or rou
15. Figures vii P841C Central Side VDSL Modem List of Tables Table 2 1 P841C LED Descriptions dieere edere eU ee Pe RE Te E ER ed de e e RH d d e de Ea e e UR 2 1 Table 2 2 P841C Rear NEE 2 2 Table 3 T P841C Help Comnmands deett om is tabem ie ai vien 3 4 Table 3 2 Sys Status Command 1 rte Rm a detenta dto da e 3 5 Tables VDSL Default Valles ee endo eat ead noie ees a R SS 4 1 Table 4 2 VDSE Mode ice te ete de REI e Ree m e tes 4 1 Table 4 3 VDSL Mode Frequency Ranges and Rates ener enne nnne nennen enne nnne ener 4 2 Table 4 4 VDSL Rates IMS 4 3 Table 4 5 V DS E Status Counters a co eU EHE RENE DOR aden acl Sarit UU ORDER ERU 4 5 Table 4 6 VDSE Show Comimnand tet ge PP e leia 4 7 Table 5 1 Ethernet Status E mita 5 2 EI 5 4 T ble 6 T Troubleshooting the VDSE LEEBD i 6 1 Table 6 2 Troubleshooting Data Transmission sess ener enne nnne nr nennen nennen nnne rne 6 1 Table 6 3 Troubleshooting a Non Constant VDSL LED nennen eren ener enne nennen nnne rennen enn 6 2 Table 6 4 Troubleshooting the SYVNC ate eene enne eene nnne nnne enne internen nine nennen nennen nennen 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 t
16. P841C Central Side VDSL Modem May 2002 Version 1 00 User s Guide ZyXEL TOTAL INTERNET ACCESS SOLUTION 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 1s 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 up
17. Side VDSL Modem Chapter 1 Getting to Know the P841C 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 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 e 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 e ANSI Mode giving upstream rates from 1 56 Mbps to 6 25 Mbps and downstream rates of 4 17 Mbps to 16 67 Mbps e 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 typic
18. ULAR MAIL support zyxel com my sales zyxel com my 603 795 44 688 603 795 34 407 www zyxel com my ZyXEL Communications Corp 6 Innovation Road Il 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 P841C Central Side VDSL Modem Table of Contents COpyright EE M ii ZyXEL Limited RUE LE TTT iii Interference Statements and Warnings AA iv Ee Ee ee e LEE V Pretacez dS sso Aetio eet dl ee te ete e ata ede ete ta edes ix Chapter 1 Getting to Know the PpAiC seen 1 1 1 1 ESAS ccc ta n n DE Ed cta aet p f e e e ei ra 1 1 1 2 Application Example 5 5 nete etu eia cuti n e a aee AE 1 1 Chapter 2 Hardware Conn e ONOS aces ices cae asic eaten a eee ahead eO DC dr eld ESA 2 1 2 1 Front Pane lis iia ito leccion Dile decae tados scm CUM for 2 1 2 2 Back le KEE 2 1 Chapter 3 Configuring the P8410 zeguer iiie reiten entere ecc ai conten 3 1 3 1 Additional Installation Requirements eene erre nn nn a trien nnne 3 1 3 2 A Em 3 1 3 3 EE lu Ile E D aE 3 2 3 4 System Related Comma
19. US 18 75M SNR 31 89dB RSERR 67M SNR 41 30dB RSERR 0 DISC 130 US 18 75M SNR 31 92dB RSERR 67M SNR 41 27dB RSERR 0 DISC 133 US 18 75M SNR 31 78dB RSERR 67M SNR 40 97dB RSERR 0 DISC 136 US 18 75M SNR 31 88dB RSERR 67M SNR 41 10dB RSERR 0 DISC 139 US 18 75M SNR 31 96dB RSERR 67M SNR 41 01dB RSERR 0 DISC 142 US 18 75M SNR 31 67dB RSERR 67M SNR 41 20dB RSERR 0 DISC 0 0 0 0 0 0 Figure 4 7 VDSL Monitor Refer to Table 4 5 for more information on these fields 4 1 12 VDSL Show Command vdsl show 4 6 VDSL Related Commands P841C Central Side VDSL Modem This command displays your P841C settings as shown in the next example P841C vdsl show vdsl mode 10BaseS 0 vdsl Active flag on vdsl Max upstream rate 1562500 bps vdsl Max downstream rate 4166667 bps vdsl state 1 vdsl long loop flag off vdsl sleep mode off vdsl auto flag on vdsl monitor flag off vdsl debug flag off vdsl auto upgrade NT EEPROM flag off enet monitor flag off LT Ethernet speed Auto LT Ethernet full duplex flow control on NT Ethernet speed Auto NT Ethernet full duplex flow control on vdsl disconnect count 0 vdsl uptime 0 secs Figure 4 8 VDSL Show Command Table 4 6 VDSL Show Command FIELD DESCRIPTION EXAMPLE This field displays the VDSL mode 10BaseS 0 vdsl Active flag vdsl Max upstream rate This field displays if the VDSL driver is active on This field displays the maximum upstre
20. al 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 Ethernet up to 100 meters VDSL up tp 1 5 KM AA SA P841C idad EE eee P841 HE Figure 1 1 Campus Application 1 2 Getting to Know the P841C P841C Central Side VDSL Modem Chapter 2 Hardware Connections This chapter gives a brief introduction to the P841C hardware 2 1 Front Panel The following figure shows the front panel of the P841C PRESTIGE 841C Figure 2 1 P841C Front Panel 2 1 1 Front Panel LEDs 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 The system is turned on OFF The system is off LAN 10M Green Blinking The system is transmitting receiving to from a 10 Mbps Ethernet network ON The link to a 10 Mbps Ethernet network is up OFF The link to a 10 Mbps Ethernet network is down LAN 100 M Yellow Blinking The system is transmitting receiving to from a 100 Mbps Ethernet network ON The link to a 100 Mbps Ethernet network is up OFF The link to a 100 Mbps Ethernet network is down VDSL Green Blinking The system is transmitting receiving to from the VDSL modem ON The l
21. alization process For more information see the VDSL debug command This field shows the VDSL auto upgrade status on or off 1 VDSL Related Commands 4 7 P841C Central Side VDSL Modem FIELD DESCRIPTION EXAMPLE vdsl auto upgrade NT This field shows the VDSL auto upgrade status on or off EEPROM flag When auto upgrade is on the P841C will check the subscriber s modem VDSL version and automatically upgrade it if it is an earlier version than the P841C s enet monitor flag This field shows the Ethernet monitor flag status on or off If this flag is on and the link is up the P841C display P841C and the subscriber s VDSL modem s Ethernet statistics LT Ethernet speed This field shows the P841C Ethernet port speed Auto LT Ethernet full duplex flow This field shows the P841C Ethernet port flow control status on control on or off NT Ethernet speed This field shows the P841 subscriber s VDSL modem Auto Ethernet port speed NT Ethernet full duplex flow This field shows the P841 subscribers VDSL modem control Ethernet port flow control status Con or off vdsl disconnect count This field displays how many times VDSL connection has 0 been disconnected vdsl uptime This field displays how long the VDSL link has been up 0 secs 4 1 13 VDSL Autoupg Command vdsl autoupg on off Type this command to show the VDSL auto upgrade status without
22. am rate configured 1562500 bps 0 vdsl Max downstream rate This field displays the maximum upstream rate configured 4166667 bps 0 vdsl state vdsl long loop flag vdsl sleep mode vdsl auto flag vdsl monitor flag vdsl debug flag vdsl auto upgrade NT This field displays the VDSL state VDSL goes through several states before the VDSL link is up For more information on states see the VDSL debug command This flag comes on when the distance from the P841C to the subscriber VDSL modem P841 is greater than a certain distance 1 Km using 24 AWG American Wire Gauge When this happens interleaving is enabled so as to prevent bursty errors however this decreases throughput Sleep mode means the VDSL chip is in power save mode This happens when vdsl Active is off This field shows the current VDSL auto flag status on or off When this flag is on the P841C will automatically negotiate upstream and downstream rates up to the values set using the upstream and downstream commands This field shows the current VDSL monitor flag status on or off When this flag is on and the VDSL link is up the P841C will automatically VDSL parameters every three seconds For more information see the VDSL monitor command This field shows the current VDSL debug flag status on or off When this flag is on the P841C will automatically display messages during each stage state of the VDSL initi
23. ates the high frequency VDSL signal from the voice band signal and feeds the VDSL signal to the P841C while the voice band signal is diverted to the PHONE port Connect one end of a phone cable to the RJ 11 PHONE port and then connect the other end to a PBX Private Branch eXchange or PSTN Public Switched Telephone Network 2 2 Hardware Connections P841C Central Side VDSL Modem 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 hardware and software components to configure your device e A computer with a 10 100M Ethernet NIC Network Interface Card e Acomputer with terminal emulation software configured to the following parameters VT100 terminal emulation 9600 bps No parity 8 data bits 1 stop bit No flow control 3 2 Login Screen When you turn on your P841C it performs several internal tests as it initializes A login screen appears with copyright and VDSL information prompting you to enter the password as shown in the next figure You need a password to configure the P841C The default password when the P841C is shipped is 1234 ZyXEL R Prestige 841C VDSL LT Modem Version V1 00 DH 0 b2 3 20 2002 Copyright c ZyXEL Communications Corp 2001 2002 All rights reserved VDSL Modem Code Version
24. entral Side VDSL Modem 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 DC12Volts 1 2A Power consumption 6 W Power consumption 6 W Safety standards UL CUL UL 1950 CSA C22 2 No 234 M90 Safety standards UL CUL UL 1310 CSA C22 2 No 223 M91 EUROPE UNITED KINGDOM AC Power Adapter model AD 1201200DV AC Power Adapter model AD 1201200DK Input power AC230Volts 50Hz 0 2A Input power AC230Volts 50Hz 0 2A Output power DC12Volts 1 2A Output power DC12Volts 1 2A Power consumption 6 W Power consumption 6 W Safety standards TUV CE EN 60950 Safety standards TUV CE EN 60950 BS7002 JAPAN AUSTRALIA AND NEW ZEALAND AC Power Adapter model JOD 48 1124 AC Power Adapter model AD 1201200DS or AD 121200DS Input power AC100Volts 50 60Hz 27VA Input power AC240Volts 50Hz 0 2A Output power DC12Volts 1 2A Output power DC12Volts 1 2A Power consumption 6 W Power consumption 6 W Safety standards T Mark Japan Dentori Safety standards NATA AS 3260 Power Adapter Specifications P841C Central Side VDSL Modem Index j DISC td 4 11 Disclatner ia aaa 11 TO BasezS x isse cec iter tete ete tees 4 8 D
25. esi e ERR 4 11 LO Base Site E 4 7 4 9 Duplex 5 1 5 3 6 3 10Base S Mode 1 1 E A enet Tel 3 5 ALGM UERR id Ee 5 2 enet monitor 3 5 5 3 ANST ModE eree ipd 1 1 enet speed inicias 3 5 5 3 ANSI ETSI Plan Oo 4 8 NEE EC 3 4 5 1 B Ethernet Switch 6 2 Back Panel ne es 2 1 ETSI Mode l 1 ege 4 7 ETSI Plan 997 4 8 4 9 BUE anteire x ESL tue 5 2 EXC COL 5 2 Ett 3 3 C CEs iin nde EE iv F Certification cccccccccccccccccccccccccccceccecccccccceeece iv Li A A E E iv Glass Bars iv FCC Rules eene IV CONSOLE Sd di 2 2 FES VERR echte eene eg 5 2 Contacting Customer Support v Federal Communications Commission FCC 7 Interference Statement iv Copyright erede dd ditare 11 Firmware Upgrade 3 5 CS I EE 5 2 Flow contra 2 1 5 1 6 3 Customer Support V Front Panel di eee dos 2 1 D Front Panel Connectors cccococcccnonancnnnnnos 2 2 Data Rate ws siete its 6 2 Front Panel LED 2 1 Data Transmission ooonooonnncnnonnnonncnnncnncc nnos 6 1 ETE ERR oa ets 5 2 Declaration of Conformity iv fwupgrade sssessss 3 2 3 4 3 5 Default Settings H Kermt gg dco nen 5 1 help isis ect tat RR 3 3 Index C P841C Central Side VDSL Modem I Intermittent VDSL LED 6 2 Introducing the SMIT 3 1 L LAN EE 2 2 IEN E EE 5 2 Line Termination LT ix 1 1 DINKSSTAT EE 4 11 Logica denne 3
26. he following system status parameters firmware version V1 00 DH 0 b3 3 26 2002 VDSL modem code version 0x50 sys uptime 27782 ms 0 00 27 782 Figure 3 7 Sys Status Command Table 3 2 Sys Status Command FIELD DESCRIPTION firmware version This field shows the P841C firmware version and the date it was created vdsl modem code version This field shows the VDSL driver version sys uptime This field displays in milliseconds and hours minutes seconds how long the system has been up 3 4 5 Firmware Upgrade Command fwupgrade Follow these steps for a successful firmware upgrade Step 1 Type fwupgrade to begin the firmware upgrade process via XMODEM P841C gt fwupgrade This operation will overwrite the old firmware Continue Y N Figure 3 8 Upgrading Firmware First Warning Step 2 Type Y to continue the upgrade process Step 3 You now see the next screen warning you not to abort the upload process after the Xmodem file transfer begins If you want to quit the firmware upgrade process and you have NOT YET started the file transfer process using a Terminal emulation program then restart the P841C now to exit Configuring the P841C 3 5 P841C Central Side VDSL Modem You MUST NOT abort this operation after XMODEM data transfer begins Otherwise the device will be damaged Restart your device before XMODEM transfer begins to quit the upgrade process Figure 3 9 Upgrade Firmware Last War
27. he 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 e 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 e 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 e 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
28. his command to set the VDSL downstream rate to speed y or show the current downstream speed without y vdsl auto on off Type this command to turn the VDSL auto flag on or off or show the current VDSL auto flag status without on or off vdsl load It nt This command causes the P841C to load new VDSL modem code into LT P841C or NT P841 If LT is specified the P841C will load the VDSL modem code into the VDSL chip If NT is specified P841C will load the VDSL modem code into the P841 VDSL chip vdsl reset Issue this command to cause a software reset to the VDSL Chip The VDSL link disconnects temporarily while resetting vdsl reconnect Issue this command to cause the P841C to reconnect the VDSL link vdsl status Issue this command to show the VDSL connection status vdsl clear Issue this command to clear the VDSL connection status counters vdsl debug onloff Type this command to show the VDSL debug flag status without on or off or turn on off the VDSL debug flag When this flag is set on VDSL debug messages are displayed vdsl monitor Type this command to show the VDSL monitor flag status without on or off or turn on off on off the VDSL monitor flag When this flag is set on and the VDSL link is up VDSL parameters are displayed every three seconds vdsl show This command displays your P841C settings vdsl write It nt Write variables to VDSL chipset registers addr value
29. ink to the VDSL modem is up OFF 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 P841C Central Side VDSL Modem LAN 10 100M CONSOLE YDS PHONE Figure 2 2 P841C Back Panel 2 2 1 Rear Panel Connectors Table 2 2 P841C Rear Panel Connectors CONNECTER DESCRIPTION POWER Make sure you are using the correct power source 12VDC Connect the female end of the power adapter to the power receptacle on the rear panel of your P841C Connect the other end of the adapter to a power outlet LAN 10 100M The Ethernet interface is an RJ 45 connector Use a crossover Ethernet cable to connect to a hub or WAN switch Use a straight through Ethernet cable to connect to a computer CONSOLE The CONSOLE port is an RS 232 port for configuration of the P841C Connect the male 9 pin end of the console cable to the console port of the P841C Connect the other end either a female 25 pin or female 9 pin to a serial port COM1 COM2 or other COM port of your computer You can use an extension RS 232 cable if the enclosed one is too short VDSL Connect one end of a phone cable to the RJ 11 VDSL port and then connect the other end to the telephone wall jack that connects to the subscribers VDSL modem P841 PHONE The line from the subscriber s carries both VDSL and voice signals The P841C has a built in splitter that separ
30. ision was detected on a particular interface later than 512 bit times into the transmission of a packet EXC COL A count of frames for which transmission failed due to excessive collisions Excessive collision is defined as the number of maximum collisions before the retransmission count is reset MACRX ERR This counter contains the number of frames received that were less than 64 bytes These frames are discarded CS ERR The number of times that the carrier sense condition was lost or never asserted when attempting to transmit a frame on a particular interface FTL ERR This counter contains the number of frames received that were more than maximum length 1536 bytes These frames are discarded FCS ERR Frame Check Sequence Errors OTO A count of data and padding octets of frames that are successfully transmitted ORO A count of data and padding octets of frames that are successfully received BCF A count of frames that are successfully received and are directed to the broadcast group address RXPAUS The number of received PAUSE packets TXPAUS The number of PAUSE packets transmitted TXBCNT This counter indicates the number of valid data frames that have been transferred over the transmit channel RXBCNT This counter indicates the number of valid data frames that have been transferred over the receive channel TX DEF A count of frames for which the first transmission attempt was delayed because the Ethernet media was busy 5
31. mand to change the login password The default password when shipped is 1234 P841C gt passwd New Password Retype New Password P841C gt Figure 3 4 Change Password Command Type your new password up to 15 characters in the New Password field and press ENTER To confirm retype the same password in the Retype New Password field As you enter the password the screen displays an for each character you type You see the P841C prompt after a successful password change 3 2 Configuring the P841C P841C Central Side VDSL Modem 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 your password to log in again P841C gt exit Password Figure 3 5 Exit Command System Timeout Please note that if there is no activity for longer than five minutes after you log in your P841C will automatically log you out When you are logged out press ENTER to bring up the password prompt 3 4 3 help or Command Type help or to show all available P841C commands as displayed in the next screen P841C gt sys help or exit passwd fwupgrade vdsl uprate x vdsl downrate y vdsl auto on off vdsl load 1t nt vdsl reset vdsl reconnect vdsl status vdsl clear vdsl debug on off vdsl monitor o
32. n off vdsl show vdsl mode mode vdsl active on off vdsl autoupg on off enet status enet clear enet speed 1t nt speed enet fctrl 1t nt on off enet monitor on off display system status Show this screen logout change login password upgrade firmware set show VDSL uprate set show VDSL downrate set show VDSL auto rate selection flag load VDSL modem code reset VDSL chip force VDSL reconnect how VDSL connect status lear VDSL connect status et show VDSL debug flag et show VDSL monitor flag how VDSL parameters setting et show VDSL mode ctive deactive VDSL port et show EEPROM auto upgrade flag how ENET counters clear ENET counters set show NT ENET speed set show NT ENET full duplex flow control set show ENET monitor flag n navnnanna Figure 3 6 P841C Help Commands Configuring the P841C 3 3 P841C Central Side VDSL Modem Table 3 1 P841C Help Commands FIELD DESCRIPTION System related Commands Sys Entering this command displays the system status help or Entering this command shows the Help screen displayed exit Enter this command to log out of command mode passwd Enter this command to change the login password fwupgrade Enter this command to upgrade the P841C firmware VDSL related Commands vdsl uprate x Type this command to set the VDSL upstream rate to speed x or show the current upstream speed without x vdsl downrate y Type t
33. nds eere adan DEIRE AESA RRETAN 3 2 Chapter A VDSL Related Commands s ENNER ENEE REENEN EE annes sese mese ss nane ni nina 4 1 4 1 Introductionis eer et oe pete e eoe tn e e E pete ue oed peste cet 4 1 Chapter5 Ethernet related Commande gue eeben Eege EE eebe Eege EE eebEe ENNER EEN P Geb da Cae PE Ee 5 1 5 1 Introduction a 55 Sate tette tamm eminuit metimur e Ain S 5 1 Chapter6 Tro bleshooting 1er a dd 6 1 6 1 VDSE LED vi e Ee te tubes Acetone t dtd dex DE tte E E ita 6 1 6 2 RECETTE 6 1 6 3 Intermittent VDSELED ET 6 2 6 4 Data EE e 6 2 6 5 PASSWOIG pe En 6 2 6 6 Connecting to an Ethernet Switch sssssssssseeeee nennen enne ASEARA AE AEREE RAN 6 2 Power Adapter Specifications esee nennen nene nn nn nn sensn herren treten nenne ESEE EEEE A let ice i eut LH tete tA ed e tet ce oa ete Ly e a tue tp beue o tete ce gt C vi Table of Contents P841C Central Side VDSL Modem List of Figures Figure 1 1 Campus Application ci tee d e ER ER GR REEL e Re Rede ree pede Ee dene 1 2 Ficeure 2 1 P841C Front Bonet ertet tret ve tote eie petu tive tie te ele ee teers 2 1 Fig re 2 2 P841G Back TE 2 2 Figure 3 1 EOPIHESCECO EE 3 1 Figure 3 2 Logit Screen iscsi Se pte T dp Ee di a Nd dede 3 1 Figure 3 3 Wrong Password en e e de he EE e e o e ar P ti e e edens 3 2 Figure 3 4 Change Password Commande 3 2 Figure 3 5 Exit Coma WEE 3 3 Figure 3 6 P841C Help Coiminandi
34. ning 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 file transfer DO NOT interrupt it wait until the file transfer process finishes If you abort the upload after the transfer begins your device will be seriously damaged Example Xmodem Firmware Upload Using HyperTerminal Click Transfer then Send File to display the following screen enc Fus ET E Type the firmware file s location or click Folder C Product Browse to look for it The firmware file Filename has a bin extension C Product firmware bir Browse Protocol Choose the Xmodem protocol Amodem Send y lose ance Finally click Send Figure 3 10 Example Xmodem Upload 3 6 Configuring the P841C P841C Central Side VDSL Modem 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 4 1 VDSL Default Values VDSL PARAMETER DEFAULT VALUE VDSL Mode 0 10BaseS mode VDSL Active On VDSL Upstream Rate 12Mbps VDSL Downstream Rate 12Mbps 4 1 1 VDSL Mode Command vdsl mode mode This command displays the VDSL mode if you don t type a mode and sets it if you do Use
35. o just show the Ethernet monitor status P841C gt enet monitor enet monitor flag off Figure 5 4 Ethernet Monitor Status P841C gt enet mon on P841C gt 108 Ene S 0 B 0 S 0 Rx F 681 B 85833 S 1950 109 Enet NT DE 90140 S 2709 Rx F 0 B 0 S 0 113 LT 8 0 Rx F 815 B 117449 S 6323 114 NT 119529 S 5877 Rx F 0 B 0 S 0 118 LT S 0 Rx F 876 B 125667 S 1643 119 NT E 126557 S 1405 Rx F 0 B 0 S 0 123 LT S 0 Rx F 934 B 134174 S 1701 124 NT 134941 S 1676 Rx F 0 B 0 S 0 128 LT S 0 Rx F 980 B 138422 S 849 t E P841C gt enet 129 Enet NT F 139256 S 863 Rx F 0 B 0 S 0 Figure 5 5 Enet Monitor Statistics Table 5 2 Enet Monitor Statistics LABEL DESCRIPTION The P841C VDSL modem The subscriber s VDSL modem P841 Transmitting and Receiving Frame count Transmitting and Receiving Byte count Transmitting and Receiving Throughput in Bytes per second 5 4 Ethernet Related Commands P841C Central Side VDSL Modem Chapter 6 Troubleshooting 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 VDSLLED The VDSL LED is not on Table 6 1 Troubleshooting the VDSL LED STEPS CORRECTIVE ACTION Disconnect the phone wire coming from the VDSL port of the P841C and connect the subscribers VDSL modem or router directly to the V
36. on 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
37. point in time MSE This is the Minimum Square Error The minimum mean square error also known as MMSE performance measure is a popular metric for optimal signal processing RS ERR This is the count of bit errors detected and corrected by Reed Solomon code Reed Solomon codes are block based error correcting codes and are used to correct errors in many systems LT and NT Power Parameters TXPWR This field displays transmission power information in hexadecimal format POCO Port Output Control registers provide the control bit information POWER This is the power measured in dBm decibel milliwatts It is the product of TXPWR and POCO This is the Power Spectrum Density power divided by bandwidth 4 1 9 VDSL Clear Command vdsl clear This command clears the VDSL status counters 4 1 10 VDSL Debug Command vdsl debug on off This command turns the VDSL auto flag on or off or just shows the current VDSL auto flag status without on or off When this flag is on the P841C displays each stage state of the VDSL link initialization process When the VDSL link is up no messages are displayed until the VDSL line is disconnected VDSL Related Commands 4 5 P841C Central Side VDSL Modem 0 Loading Patch to LT P841C gt 2 State 0 Initialize 2 Write default parameters to LT 2 Goto State 1 3 State 1 Wait to connect to default rate 17 Default rate connected 15230 ms LPS VDSL US 1 56Mbps SNR
38. rod RU Re RU e ee e bn p E ee EE Eat oR eee 3 3 Figure 327 Sys status Cotnimatnid ue dest peek te RR ei 3 5 Figure 3 8 Upgrading Firmware First Warning esses eene enne eene nennt nein trennen enne trennen enne teen ne enne nennen 3 5 Figure 3 9 Upgrade Firmware Last Waring 2 csccsssesessescesecesenceotcosenessessnevasencucesesenescasanavecesesoesassvesseessanssseedetensenerssensases 3 6 Figure 3 10 Example Xmodem Upload ccscccceseesscsseseessenssvsnevonctoscesonovescnshevensssucnsessssnssossenevenconessensbesessasavessuonsnsevesossuesees 3 6 Figure dl VDSLE MOode iet antea ei OR ebria te ie a bye eege EE 4 1 Fig re4 2 VDSLE Upstream Rate 5 one a ER itio ii c p a edi dise rus 4 2 Figure 4 3 VDSE Downstream Rate e e ede side d i eeu 4 3 Figure 4 4 VDSL Auto Fl g iii e en ede he re he DOR e a P E RE e td 4 3 Figure 4 5 VDSL Status Example cease datada 4 4 Figure 4 6 VDSL Initialization Messages essccssesssssecseesessccseeseceseeeceaecsessecaeeseceaeeccsaecaeesecaevscesaeesecaeseeceasenceaecateaecneeeeenaeeneeas 4 6 Figure 4 7 RT E e e 4 6 Figure 4 8 VDSL Show Commande 4 7 Figure 5 1 Bther et Status ist ne unte eiae et bs eb E e pee o a pe p RES 5 2 Figure 5 2 Bthernet Speed cose ais 5 3 Figure 5 3 Ethernet Flow Comtat 5 3 Fig re 5 4 Ethernet Monitor Status odi ori tite ina etie aa Entre a a a a e a 5 4 Fig re 5 5 Bnet Monitor Statlsti6s ita d eb bao dele eek oat 5 4 List of
39. see section 4 1 10 take screen shots of this information and send it to your nearest customer support representative 6 5 Password I forgot the password to my P841C Table 6 5 Troubleshooting the Password STEPS CORRECTIVE ACTION Contact your distributor for a generic password Tell them your product serial number located on the sticker on the bottom of the P841C and firmware version you are using see section 3 4 4 6 6 Connecting to an Ethernet Switch The P841C cannot connect to an Ethernet switch Table 6 6 Troubleshooting Connecting to an Ethernet Switch STEPS CORRECTIVE ACTION Check your cable connections Use a crossover Ethernet cable to connect to a hub or an Ethernet switch Use a straight through Ethernet cable to connect to a computer The factory default settings for the Ethernet port of the P841C are 6 2 Troubleshooting P841C Central Side VDSL Modem Table 6 6 Troubleshooting Connecting to an Ethernet Switch STEPS CORRECTIVE ACTION Speed Auto gt Duplex Auto gt Flow control On for full duplex and off for half duplex If the P841C s auto negotiation is turned off an Ethernet port uses the pre configured speed and duplex mode when making a connection thus requiring you to make sure that the settings of the switch Ethernet port are in the same order to connect Troubleshooting 6 3 P841C C
40. ter with the original P841C 6 Log into the P841C enter the VDSL status command see section 4 1 8 and the VDSL debug command see section 4 1 10 take screen shots of this information and send it to your nearest customer support representative Troubleshooting 6 1 P841C Central Side VDSL Modem 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 subscribers VDSL modem or router directly to the VDSL port of the P841C using a different telephone wire If the VDSL LED stays on check for a problem with the building s phone wire 2 Use the VDSL commands to reset and reconnect the VDSL channel see sections 4 1 6 and 4 1 7 6 4 Data Rate The SYNC rate is not the same as the configured rate Table 6 4 Troubleshooting the SYNC rate STEPS CORRECTIVE ACTION 1 Disconnect the phone wire coming from the VDSL port of the P841C and connect the subscriber s VDSL modem or router directly to the VDSL port of the P841C using a different telephone wire If the rates match the regular phone wire quality may be limiting the speed 2 Use the VDSL commands to reset and reconnect the VDSL channel see sections 4 1 6 and 4 1 7 Log into the P841C enter the VDSL status command see section 4 1 8 and the VDSL debug command
41. the vdsl reset or vdsl recon command to make VDSL reconnect after you set the mode it does not do this automatically The modes are listed in the next table P841C gt vdsl mode vdsl mode 10BaseS 0 Figure 4 1 VDSL Mode Table 4 2 VDSL Mode MODE MODE TYPE oo 10BaseS mode ANSI Mode ANSI ETSI Band Plan 998 NUMBER ETSI Mode ETSI Band Plan 997 The band plan is different for each mode even though the speed may be the same The following table summarizes transmission rates and frequency ranges for each VDSL mode supported by the P841C VDSL Related Commands 4 1 P841C Central Side VDSL Modem 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 ANSI Mode ANSI ETSI Band Plan 998 Upstream 4 0M 5 0M 1 56 3 13 6 25 Downstream 900K 3 0M 4 17 6 25 8 33 12 50 16 67 ETSI Mode ETSI Band Plan 997 Upstream 4 0M 5 0M 1 56 3 13 6 25 Downstream 900K 2 7M 4 17 6 25 9 38 12 50 4 1 2 VDSL Active Command vdsl active on off Use this command to activate or deactivate the VDSL driver 4 1 3 VDSL Uprate and Downrate Commands Use the following commands to view and set VDSL upstream and downstream rates Rates vary according to VDSL mode selected see Table 4 4 and section 4 1 1 Upstream Rates vdsl uprate uprate uprate is an integer
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