Manuel d'utilisation / d'entretien du produit uBR7225VXR du fabricant Cisco Systems
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iii Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 CONTENTS Document Revision History ix Document Objectives ix Audience x Document Organization x Document Con.
Contents iv Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Preventing Electrostatic Disch arge Damage 2-4 Site Requirements 2-5 AC Power 2-5 Site Environment 2-5 .
Contents v Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Installing Rack-Mount Brackets on the Rear of the Chassis 3-7 Installing Rack-Mount Brackets on the Fron.
Contents vi Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Measuring the RF Signal at the Forward Test Point on a Laser Transmitter 4-37 Configuring the Digital S.
Contents vii Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX C Cable Specifications C-1 Coaxial Cables C-1 Console and Auxiliary Port Cables and Pinouts C.
Contents viii Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02.
ix Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 Preface This preface d escribes the object iv es, intended audien ce, and or ganization o f this document and e xplains ho w to fin d additional information on related produc ts and services.
x Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Preface Audience This guide is intended for cable syst em installers and tec hnicians wh o physically install and connect th e Cisco uBR7225VXR uni versal b roadband router and asso ciated equipment at the cable headend or distribu tion hub .
xi Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Preface Document Conventions This publication u ses the follo wing con v entions: • The symbol ^ represents the key labeled Contr ol . For examp le, the ke y combination ^z means hold down the Control key whi le you press the z ke y .
xii Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Preface T imesaver Means the described action saves t ime . Y ou can sav e time by performin g the action described i n the paragraph. Ti p Means the following i nformation migh t help you solve a pr oblem .
CH A P T E R 1-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 1 Cisco uBR7225VXR Overview This chapter describes the Ci sco uBR7225VXR uni ver sal broadband rou.
1-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Cisco uBR7225VXR Universal Br oadband Router • A midplane that serv es as the interconnect betw een the cable interface line cards and the other components of the system.
1-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Cisco uBR7225VXR Universal Broadband Router Cisco uBR7225VXR Router Chassi.
1-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Cisco uBR7225VXR Network Interf ace Overview Figur e 1 -2 Cisco uBR7225VXR .
1-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Cisco uBR7225VXR Network Interface Overview Figur e 1 -3 Cisco uBR7255VXR .
1-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Supported System Configurations Overview Supported System Configurations Overview The Cisco uBR7200 series uni versal broadband routers is inst alled at a cable television headend or a distrib ution hub .
1-7 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Supported System Con figurations Overview – T elc o return cable i nterfaces transmit over th e PSTN.
1-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Supported System Configurations Overview VPN Services The Cisco uBR7225VXR router supp orts VPN services. Figure 1 -5 shows a typical VPN architecture.
1-9 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Supported System Con figurations Overview Figur e 1 -6 T w o-W ay IP T ele.
1-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions Figur e 1 -7 T elco Retur n Networ k Example Hardware Component Descriptions Most Cisco uBR7225VXR uni versal broadband router components are f ield-re placeable units (FRUs).
1-11 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Hardware Component Descriptions • Sending and receiving routing protoco.
1-12 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions – Cisco uBR7200-NPE-G2—SDRAM: 1 GB (def ault) and 2 GB.
1-13 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Hardware Component Descriptions Power Supplies The Cisco uBR7225VXR route.
1-14 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions Figure 1 -8 Cisco uBR7225VXR AC-Input P o.
1-15 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Hardware Component Descriptions T emperature sensors on the network p rocessing engine monitor the in ternal ai r temperature and send warning messages wh en the internal air temperature approaches a specified threshold.
1-16 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions Figur e 1 -1 0 Inter nal Airflo w—T op .
1-17 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Hardware Component Descriptions Cisco uBR7225VXR Chassis The front of the chassi s has two slots fo r cable interface line card s and one bay for the subc hassis.
1-18 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions Figure 1 -12 Cisco uBR7225VXR Subchassis and Mi dplane CompactFlash Disk The Cisco uBR7225VXR uni versal broadband router has one CompactFlash Disk slot that u ses CompactFlash Disks.
1-19 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 1 Ci sco uBR7225VXR Overview Hardware Component Descriptions The CompactFlash Disk has controller circuitry that allows it to emulate a hard disk and automatically maps out ba d blocks and pe rforms autom atic block era sure.
1-20 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 1 Cisco uBR7225VXR Overview Hardware Componen t Descriptions.
CH A P T E R 2-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 2 Preparing the Cisco uBR7225VXR Router for Installation This chapter describes the site re quirem.
2-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Safety Recommendations • Do not wear loose clothin g, jewel ry (including ring s and ch ains), or other items that could get caught in the chassis.
2-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Safety Recommendations Figur e 2-1 Lif ting the Chassis (Cisco uBR7246 Router Sho wn) War ni n g T wo people are required to lift the chassis.
2-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Safety Recommendations War ni ng The telecommunications lin es must be disconnected 1) before unplugging the main pow er connector and/or 2) while the housi ng is open.
2-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Site Requirements • Ensure that the network p rocessing engine is ful ly inserted in its chassis slot and the capti ve installation scre ws are tightened.
2-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Site Requirements T o provid e airflo w throug.
2-7 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Required Network Information • Ensure that .
2-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Installation Tools • IP addresses and subnet mask s, if you are routing IP . • Dial-up access telephone numbers, usernames, and passw ords for telco return operation.
2-9 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Equipment Required to Verify Your Plant’s R.
2-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Provisioning the Ca ble Headend • One or mo.
2-11 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Provisioning the Cable Headend Note For a V oIP system using H .323, ensu re that the CMTS has been properly pr ovisioned with equipm ent such as V oIP gateways and gatek eepers.
2-12 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Provisioning the Ca ble Headend DHCP, DNS, TFTP, and TD Servers A DHCP server must be installed at the head end.
2-13 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Provisioning the Cable Headend Figur e 2-2 S.
2-14 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Provisioning the Ca ble Headend Headend Wiring This section pro vides guidelines for sett ing up the headend wiring and cabli ng at your site.
2-15 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Provisioning the Cable Headend • Any addit.
2-16 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Provisioning the Ca ble Headend Figur e 2-3 C.
2-17 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 2 Preparing the Ci sco uBR7225VXR Router for Installation Site Preparation Checklist • Install and use the cable-management bracket in cluded with the Ci sco uBR7225VXR rack-mount kit to keep cables o rganized.
2-18 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 2 Preparing the Cisco uBR7225VXR Router for Installation Component Checklists Component Checklists • Check of f the equipment as it is unpacked. • T itles and quantities of documents will v ary .
CH A P T E R 3-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 3 Installing the Cisco uBR7225VXR Router This chapter e xplains ho w to install and connect a Cisc.
3-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Cisco uBR7225VX R Router C hassis Rack-Mo unting Options Cisco.
3-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Cisco uBR7225VXR Router Chassi s Rack-Mounting Options Figur .
3-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Cisco uBR7225VX R Router C hassis Rack-Mo unting Options Figur.
3-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Cisco uBR7225VXR Router Chassi s Rack-Mounting Options Figur .
3-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Cisco uBR7225VX R Router C hassis Rack-Mo unting Options In th.
3-7 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Installing t he Brackets on the Chassis Installing the Bracke.
3-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Installing the Bracke ts on the Chassis Step 6 Thread two M3 x 6-mm Phillips panhead scre ws through the cable-management bracket and in to the chassis, and tighten the screws.
3-9 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Installing t he Brackets on the Chassis Figure 3-1 0 Installi.
3-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Installing the Bracke ts on the Chassis Figur e 3-1 1 Install.
3-11 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Installing t he Brackets on the Chassis Caution Because the .
3-12 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Installing the Chassis in a Workbench or Tabletop Environment.
3-13 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Cabling Step 3 Add the f ive ru bber feet supplied wi th the accessory ki t to the base of the chassis.
3-14 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Console and Auxiliary Port Connection Equipment Caution T o comply with GR-1089-Core in tra-buildi ng lightning-immunit y requirements, you must use shielded (screened) cable that is grounded at both ends.
3-15 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Console and Auxilia ry Po rt Connectio n Equipment Before co.
3-16 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Protective Grounding Protective Grounding The building installati on should pr ovide a means for connection to the protecti ve earth grounding.
3-17 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Connecting Power War ni n g Before working on equipme nt that is connected to power line s, remove jewelry (including rings, necklaces, and watches).
3-18 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Powering On the Cisco uBR 7225VXR Router Figure 3-14 Connecting AC-Input P ow er Step 3 Plug the A C power supp ly cable into the A C power sou rce.
3-19 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 3 Installing the Cisco u BR7225VXR Router Configuring the Interfaces Note If the cable interface l ine.
3-20 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 3 Installing the Cisco uBR7225VXR Router Configuring the Interfac es At any point you may enter a questions mark ‘?’ for help. Use ctrl-c to abort configuration dialof at any prompt.
CH A P T E R 4-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 4 Connecting the Cisco uBR 7225VXR Router to the Cable Headend This chapter describe s how to conn.
4-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Two-Way Data Headen d Architecture Two-Way Data Headend Architecture Figure 4-1 sho ws a typical headend conf iguration conf igured for two-way data, includin g digitized v oice and fax.
4-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend One-Way Data Headend Arc hitecture One-.
4-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting an d Configuring the Do wnstre.
4-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l These two sections describe the procedures necessa ry to us e a spectrum analyzer .
4-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figur.
4-7 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Fig.
4-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figur.
4-9 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Fig.
4-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figu.
4-11 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Step 10 V erify that your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in Appendix B, “RF Spec ifications.
4-12 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figu.
4-13 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Fi.
4-14 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figu.
4-15 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Fi.
4-16 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Sig nal Figu.
4-17 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Downstream RF Signa l Fi.
4-18 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting and Con figuring the Upstre am Connecting and Configuring the Upstream The follo wing sections describe ho w to connect and configure the upstr eam for dig ital data.
4-19 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Connecting and Configuring the Upstrea.
4-20 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting and Con figuring the Upstre a.
4-21 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Connecting and Configuring the Upstrea.
4-22 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Measuri.
4-23 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur.
4-24 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Note Re.
4-25 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Step 10 V erify that your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in Appendix B, “RF Spec ifications.
4-26 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure .
4-27 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur.
4-28 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal The importance of this e xample is to bring to your attention the need fo r minimal outside plant no ise.
4-29 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Step .
4-30 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur e.
4-31 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur.
4-32 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur e 4-37 V ector Signal Analyzer Plot of Upstr eam Data Burst (Pr eamble Only)—QPSK Demodulation M ode d.
4-33 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur.
4-34 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure .
4-35 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figur.
4-36 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Note The 4.25 dB decrease in amplit ude is due to a comb ination of half of the ch annel bandwi dth (3 dB) and an additional 1.
4-37 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the RF Signal at the Forw ar.
4-38 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the RF Signal at the Forw ard .
4-39 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Measuring the RF Signal at the Forw ar.
4-40 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal Step 8 Select the video av eraging feature to verify flatne ss through the headend combiner .
4-41 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 4 Connecting the Cisc o uBR 7225VXR Router to the Cable Headend Configuring the Digital Signal Careful system design and operation can pre vent po tentially serious intermit tent performance problems across your cable interface network.
4-42 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal.
CH A P T E R 5-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 5 Maintaining the Cisco uBR7225VXR Router This chapter describes basic main tenance for the Cisco .
5-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 5 Maintaining the Cisco uBR7225VXR Router Environmental Monitorin g and Reporting Functions Caution The network processing engi ne cannot be remov ed if the router is operating.
5-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 5 Maintain ing the Cisco uBR7225VXR Router Environmental Monitoring and Repo rting Functions • Shutdo.
5-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 5 Maintaining the Cisco uBR7225VXR Router Environmental Monitorin g and Reporting Functions Caution T o prev ent overheating the chassis, ensure that your system is draw ing cool inlet air .
5-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 5 Maintain ing the Cisco uBR7225VXR Router Environmental Monitoring and Repo rting Functions The show e.
5-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 5 Maintaining the Cisco uBR7225VXR Router Environmental Monitorin g and Reporting Functions Voltage readings: +3.30 V measured at +3.28 V +1.50 V measured at +1.
CH A P T E R 6-1 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 6 Troubleshooting This chapter pro vides troubleshooting information fo r the Cisco uBR7225VXR uni.
6-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 6 Troubleshooting Problem Solving with Subsystems Figur e 6-1 T roublesh ooting Str ateg y for Star tup Pro blems Problem Solving with Subsystems Ti p Isolating a problem to a specifi c subsystem simplif ies the troubleshootin g process.
6-3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 6 Troubleshooting Problem Solving with Subsystems • Cable headend subsystem—External to the Cisco u.
6-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 6 Troubleshooting Power Subsystem Power Subsystem Check the follo wing to help isolate a problem with the po wer subsystem: Step 1 T oggle the po wer supply switch off and on.
6-5 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 6 Troubleshooting Processor Subsystem T o determine if the fans are operating, listen for them.
6-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 6 Troubleshooting Processor Subsystem b. Reseat the network pr ocessing engine in its slot. c. Restart th e router . Step 2 V erify that you are runnin g a version of Cisco IO S software that supports th e NPE you are using: a.
6-7 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Gu ide OL-17309-02 Chapter 6 Troubleshooting Verifying the Downstream Signal Other Troubleshooting Information Websites These webs.
6-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Chapter 6 Troubleshooting Verifying the Downstream Signal snr_estimate 352(TenthdB), ber_estimate 0, lock_threshold 26000 QAM in lock, FEC in lock, qam_mode QAM_64 This shows a do wnstre am frequen cy of 555 MHz, 64-QAM do wnstream, and an SNR estimate of 35.
A-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX A Cisco uBR7225VXR Router Specifications This appendix pro vides information on the Cisco uBR7225VXR uni versal broadb and router physical and system specifications.
A-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix A Cisco uBR7225VXR Router Specifications Cisco uBR7225VXR Physical and System Specifications Cisco IOS Release 12.
B-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX B RF Specifications Information in the follo wing tabl es is from the DO CSIS and Euro DOCSIS Radio Fr.
B-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix B RF Specifications DOCSIS 1.0 Transmission Characteristics DOCSIS 1.0 Transmission Characteristics The follo wing tables pro vide information on the assumed d ownstream RF chan nel transmission characteristics for DOCSIS 1.
B-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix B RF Specification s DOCSIS 1.0 Transmission Char acteristics Upstream RF Channel Transmission Characteristics T ransmission is from the cable modem output at th e customer location to the headend.
B-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix B RF Specifications DOCSIS 1.1 Transmission Characteristics DOCSIS 1.1 Transmission Characteristics The follo wing tables pro vide information on the assumed d ownstream RF chan nel transmission characteristics for DOCSIS 1.
B-5 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix B RF Specification s EuroDOCSIS Transmission Characteristics Upstream RF Channel Transmission Characteristics T ransmission is from the cable modem output at th e customer location to the headend.
B-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix B RF Specifications EuroDOCSIS Transmission Character istics Downstream RF Channel Transmission Characteristics T ransmission is from the headend combiner to th e cable modem input at the customer location.
B-7 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix B RF Specification s EuroDOCSIS Transmission Characteristics Upstream RF Channel Transmission Characteristics T r ansmission is from the cable modem output at the customer location to the headend.
B-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix B RF Specifications Electrical Input and Output Electrical Input and Output The information in Ta b l e B - 9 and Ta b l e B - 1 0 relates to both DOCSIS a nd EuroDOCSIS specif ications.
B-9 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix B RF Specification s Electrical Input and Output Bandwidth 200 kHz 400 kHz 800 kHz 1600 kHz 3200 kHz O.
B-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix B RF Specifications Electrical Input and Output.
C-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX C Cable Specifications This appendix contains cable an d ca ble pinout info rmation for the Ci sco uBR7225V XR univ ersal broadband router .
C-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix C Cable Specifications Console and Auxiliary Po rt Cables and Pinouts If you use dif ferent types of c.
C-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix C Cable Specifications Console and Auxiliary Po rt Cables a nd Pinouts Figure C-2 RJ-45 Rollov er Cabl.
C-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix C Cable Specifications Fast Ethernet Port Cab les and Pinouts Auxiliary Port Cables and Pinouts Use the RJ-45-to-RJ-45 rollov er cable and RJ-45- to-DB-25 male DCE adapte r (labeled MODEM) to connect the auxiliary port to a modem.
C-5 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix C Cable Specifications Fast Ethernet Port Cables and Pinouts Figure C-3 RJ-45 Crosso ver Cable Ident ification Identifying an RJ-45 Straight-Through Cable Y ou can identify a straight-throu gh cable b y comparing the two modular ends of the cable.
C-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix C Cable Specifications Fiber-Optic Cables a nd Connectors Fiber-Optic Cables and Connectors War ni ng .
D-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX D Industry-Standard Wiring Plans About Wiring Standards In a traditional cable headend, a l arge number of wires conn ect the various components of the headend system.
D-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix D Industry-Stand ard Wiring Plans Optical Fiber Color Codes TIA/EIA Standards Information A number of Electr onic Industries Alli ance (EIA) and T elecommunications Industry Associ ation (TIA) standards are applicable to wiring.
D-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix D Industry-Standard Wi ring Plans Telephone Wire Colo r Codes Telephone Wire Color Codes T o help simplify wire management, A T&T has devise d a uni form scheme for dealing with larg e numbers of wires for the telephone in dustry .
D-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix D Industry-Stand ard Wiring Plans Telephone Wire Color Codes Cables with more than 25 pairs of wires are co nstructed from 25-pair groups. V ery large cables ha ve other v ariations generally not encount ered inside terminal wire plant s.
D-5 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix D Industry-Standard Wi ring Plans Telephone Wire Colo r Codes For small wir ing groups, such as wires for an indiv idual telephone station or t erminal, you may use a second color -code scheme.
D-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix D Industry-Stand ard Wiring Plans Telephone Wire Color Codes.
E-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX E Frequency Allocation Tables This appendix pro vides information on broad cast and cable television NTSC and P AL/SECAM standards and frequencies used around th e world.
E-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles Standards Co mparisons Standards Comparisons The follo wing tables ( Ta b l e E - 1 , Ta b l e E - 2 , and Ta b l e E - 3 ) include data from Recommendation ITU-R BT .
E-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables NTSC Cable Television Channels and Relative Frequencie s NTSC Cable Tele.
E-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles NTSC Cable Television Ch annels and Relative Frequ encies 8 8 180.0-186.0 181.25 183.0 185.75 181.2625 185.7625 180.0090 184.
E-5 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables NTSC Cable Television Channels and Relative Frequencie s PP 52 2 390.0-396.0 39 1.25 393.0 395.75 391.2625 395.76 25 390.0195 394.
E-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles NTSC Cable Television Ch annels and Relative Frequ encies 87 600.0-606.0 601.25 603.0 605.75 601.2625 605.7625 600.0300 604.
E-7 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables NTSC Cable Television Channels and Relative Frequencie s 127 810.0-816.0 811.25 813.0 815.75 811.2625 815.7625 810.0405 814.
E-8 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles NTSC (M) Cable Television Fre quencies for Japan NTSC (M) Cable Television Frequencies for Japan Japan uses NTSC (M) but has dif ferent channel assignments.
E-9 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables NTSC (M) Cable T elevision Frequencies for Japan C33 282.0-288.0 283.25 285.00 287.75 C34 288.0-294.0 289.25 291.00 293.75 C35 294.
E-10 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles PAL/SECAM Cable Television Chann els and Relative Frequencies PAL/SECA.
E-11 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables PAL/SECAM Cable Television Chann els and Relative Frequencies S12 237.0-244.0 238.25 243.75 S13 244.0-251.0 245.25 250.75 S14 251.
E-12 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles PAL/SECAM Cable Television Chann els and Relative Frequencies 26 510.0-518.0 511 .25 516.75 27 518.0-526.0 519 .25 524.75 28 526.
E-13 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix E Frequency Allocation Tables PAL/SECAM Cable Television Chann els and Relative Frequencies 61 790.0-798.0 791 .25 796.75 62 798.0-806.0 799 .25 804.75 63 806.
E-14 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix E Frequency Allocation Ta bles PAL/SECAM Cable Television Chann els and Relative Frequencies.
F-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX F Manufacturers for Headend Provisioning Requirements Ta b l e F - 1 and Ta b l e F - 2 provide inform.
F-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix F Manu facturers for Headend Provision ing Requirements North American Ch annel Plans In addition, we .
F-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 Appendix F Manufacturers for Headend Provisioning Requirements European Channel Plans European Channel Plans T .
F-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix F Manu facturers for Headend Provision ing Requirements European Chann el Plans In addition, we recomm.
G-1 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 APPENDIX G Site Log A site log pro vides a historic al record of all ac tions rele vant to the Cisco uBR7225VXR uni versal broadband router operation and maintenance.
G-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 Appendix G Site Lo g T able G-1 Site Lo g Date Description of Action Performed or Symptom Observed Initials.
GL-1 Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 GLOSSARY S ymbols 10Base-T 10 -Mbps baseband Ethernet specif ication using two pair s of twisted-pair cabling (Cate gory 3, 4, or 5): one pair for transmitting data and the other for rece i ving data.
Glossary GL-2 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 B BER Bit error rate. C CATV Cable tele vision. References to headend or dist ribution hu b . CCS Common channel sign aling. CES Circuit emulation ser vice.
Glossar y GL-3 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 DSU Data Service Unit. De vice used in digital transmi ssion that adapts the phys ical interf ace on a DTE de vice to a transmission fa cility such as T1 or E1 .
Glossary GL-4 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 HDLC High-Le vel Data Link Co ntrol. HFC Hybrid f iber-coaxial . HSSI High-Speed Serial Interface. I IEC International Electr otechnical Commission. IEEE 802.
Glossar y GL-5 Cisco uBR7225VXR Universal Broadband Ro uter Hardware Installation Guide OL-17309-02 NTSC National T elev ision System Committee. NVRAM Non volatile random-access memory . O OIR Online insertion and remo v al. P PAL Phase alternating line.
Glossary GL-6 Cisco uBR7225VXR Universal Broadband Router Hardware Instal lation Guide OL-17309-02 T T1 Digital W AN carrier facility . T1 transmits DS1-formatted d ata at 1.544 Mbps through the telephon e switching network. TAC T echnical Assista nce Center .
IN-1 Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 INDEX A AAA server 2-13 access server 2-12 adapter pinouts C-3 addresses, MAC 1-5 air exhaust 5-4 airflow 1.
Index IN-2 Cisco uBR7225VXR Universal Broadband Router Hardw are Installation Guide OL-17309-02 clearance, for air circulation 2-16 clipping 4-4 coaxial jumper manufacturers F-1, F-3 color codes optic.
Index IN-3 Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 fiber-optic laser receivers 2-11 field noti ces 6-7 field-replaceable units, see FRU s 1-10 flash mem.
Index IN-4 Cisco uBR7225VXR Universal Broadband Router Hardw are Installation Guide OL-17309-02 K kits 2-8 L LEDs cable interface line cards 6-6 enabled 3-19 power subsystem 6-4 power supply 6-3 lifti.
Index IN-5 Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 emergency power-off switch 2-3 subsystem, for troubleshooting 6-2 surge suppression 2-14 ungrounded 2.
Index IN-6 Cisco uBR7225VXR Universal Broadband Router Hardw are Installation Guide OL-17309-02 environment 2-5 equipment racks 2-15 general p recaution s 2-6 plant wiring 2-14 power considerations 2-.
Index IN-7 Cisco uBR7225VXR Universal Broadband Ro uter Hard ware Install ation Guid e OL-17309-02 grounded equipmen t 3-17 installati on 3-16 jewelry removal 3-17 lightn ing activ ity 2-4 power suppl.
Index IN-8 Cisco uBR7225VXR Universal Broadband Router Hardw are Installation Guide OL-17309-02.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Cisco Systems uBR7225VXR c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Cisco Systems uBR7225VXR - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Cisco Systems uBR7225VXR, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Cisco Systems uBR7225VXR va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Cisco Systems uBR7225VXR, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Cisco Systems uBR7225VXR.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Cisco Systems uBR7225VXR. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Cisco Systems uBR7225VXR ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
