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Cisco uBR905 Installation Manual

Cable access router
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Cisco uBR905 Cable Access Router
Hardware Installation Guide
Part Number: OL -0598-01
September 2000
Corporate Headquarters
Cisco Systems, Inc.
170 West Tasman Drive
San Jose, CA 95134-1706
USA
http://www.cisco.com
Tel:
408 526-4000
800 553-NETS (6387)
Fax: 408 526-4100
Text Part Number: OL-0598-01
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Summary of Contents for Cisco uBR905

  • Page 1 Cisco uBR905 Cable Access Router Hardware Installation Guide Part Number: OL -0598-01 September 2000 Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Text Part Number: OL-0598-01...
  • Page 2 You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures: •...

  • Page 3: Table Of Contents

    Obtaining Technical Assistance Cisco Connection Online Technical Assistance Center Documentation Feedback Product Overview C H A P T E R Overview of the Cisco uBR905 Cable Access Router Introduction Bridging Operations Routing Operations Features Basic Features Configuration Options Management Capabilities...
  • Page 4 C H A P T E R Cisco uBR905 Router Installation Checklist Physical Placement Verifying Power Requirements Connecting to the Cable System Connecting the Ethernet Cables Connecting Power Router Power On and Initialization Sequence Verifying Installation Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 5 Regulatory Compliance and Safety Information A P P E N D I X If You Need More Information Service Providers Subscribers (End Users) Agency Approvals for the Cisco uBR905 Safety Information General Safety Subscriber Safety Translated Safety Warnings Warning Definition...
  • Page 6 Contents Qualified Personnel Warning Jewelry Removal Warning Ground Conductor Warning C-10 Router Grounding Warning C-11 I N D E X Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 7: Preface

    Purpose This guide covers the physical installation of the Cisco uBR905 cable access router. These procedures include site preparation; the physical placement of the router in an appropriate location; the cabling required for the power, Ethernet, and cable connections; and verification of the installation at the router’s initial power on.

  • Page 8: Organization

    (CLI). However, CLI access might be required to configure the router and to bring it to full operability. See the Cisco uBR905 Cable Access Router Software Configuration Guide for instructions on configuring the router for network operation.

  • Page 9: Conventions

    For commands at the prompt example, the prompt indicates global Router (config) # configuration mode. font Terminal sessions and Screen information the system displays Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 10 Pour obtenir les traductions des mises en garde figurant dans cette publication, veuillez consulter l’annexe intitulée « Regulatory Compliance and Safety Information » (Traduction des avis de sécurité). Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 11: Related Documentation

    "Regulatory Compliance and Safety Information" [Översatta säkerhetsvarningar].) Related Documentation Refer to the following Cisco documents for related information. The documents can be found online at Cisco Connection Online (CCO) or on the Documentation CD-ROM. You can also order printed copies of most current documents.

  • Page 12: Service Provider Publications

    • Quick Start, Cisco uBR905 Cable Access Router Subscriber Setup Note Subscriber publications for other models of Cisco uBR900 series cable access routers are also available on CCO. CMTS Hardware Installation Publications Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide •...

  • Page 13: Configuration Editor And Network Management Publications

    Obtaining Documentation World Wide Web You can access the most current Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com. Documentation CD-ROM Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product.

  • Page 14: Obtaining Technical Assistance

    Technical Assistance Center The Cisco Technical Assistance Center (TAC) is available to warranty or maintenance contract customers who need technical assistance with a Cisco product that is under warranty or covered by a maintenance contract. To display the TAC web site that includes links to technical support information and software upgrades and for requesting TAC support, use www.cisco.com/techsupport.

  • Page 15: Documentation Feedback

    Documentation Feedback If you are reading Cisco product documentation on the World Wide Web, you can submit technical comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco.
  • Page 16 Preface Obtaining Technical Assistance Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 17: Chapter 1 Product Overview

    For information on configuring the Cisco uBR905 cable access router, see the Cisco uBR905 Cable Access Router Software Configuration Guide, available on CCO and the Documentation CD-ROM. Overview of the Cisco uBR905 Cable Access Router This section provides an overview of the Cisco uBR905 cable access router, its hardware, and its basic operation: Introduction •...

  • Page 18: Bridging Operations

    DOCSIS-compliant bridging data operations. When installed and configured as a bridge, the Ethernet hub ports at the rear of the Cisco uBR905 router can be connected directly to PCs at the subscriber site. A maximum of four PCs can be directly connected to the router’s hub ports, or a maximum of 254 PCs can be connected if one of the four...

  • Page 19: Routing Operations

    Routing Operations When configured as a router, the Cisco uBR905 can be connected directly to four PCs via the Ethernet hub ports at the rear of the router. One of the four Ethernet hub ports can also be connected to a standard 10BaseT Ethernet hub, which then connects additional computers or Ethernet devices at the site to a local area network (LAN).

  • Page 20: Features

    Chapter 1 Product Overview Overview of the Cisco uBR905 Cable Access Router Features This section provides an overview of the Cisco uBR905 cable access router’s features, divided into the following categories: Basic Features • Configuration Options • Management Capabilities •...

  • Page 21: Configuration Options

    Special web interface is automatically activated when the cable interface is not operational, • allowing users to easily supply configuration and status information to support engineers. LEDs on the front panel provide run-time status information on the Cisco uBR905 cable access • router, its interfaces, and its links.
  • Page 22 By default, downloading a Cisco IOS configuration file disables the console port and erases all previously saved configurations. This default behavior prohibits configuration access at the remote site. Figure 1-3 depicts the front of the Cisco uBR905 cable access router. Figure 1-4 shows the rear of the unit. Figure 1-3...
  • Page 23 Power Supply • See Appendix B, “Connector and Cable Specifications,” for the pinouts and cabling information for each of these connectors. For information on using the console port, see the Cisco uBR905 Software Configuration Guide. LED Descriptions The Cisco uBR905 router contains 11 LEDs on the front panel that provide information about the router’s status and network connections.

  • Page 24: Data Connectors

    LED for custom applications or services. 1. These are the Cisco factory-default LED settings. Configuration control messages can be sent to the Cisco uBR905 cable access router through Simple Network Management Protocol (SNMP) set requests. Using Management Information Base (MIB) objects in the Cisco cable device MIB, the CMTS system administrator can define these LEDs to have other meanings.

  • Page 25: Power Supply

    Power Supply The Cisco uBR905 cable access router uses an external AC-input power supply. Refer to Table A-1 in Appendix A, “Technical Specifications,” for the AC-input power supply power specifications, including input voltage and operating frequency ranges.

  • Page 26: Functional Overview

    Chapter 1 Product Overview Functional Overview Functional Overview This section provides a functional overview of the operation of the Cisco uBR905 cable access router, divided into the following categories: Initial Power On and Provisioning • Data Operations • Initial Power On and Provisioning The Cisco uBR905 cable access router ships from the Cisco factory ready to work in a DOCSIS-compliant bridging mode.

  • Page 27: Initial Power On Sequence

    To ensure that subscribers obtain the exact services they have ordered, the Cisco uBR905 router arrives from the Cisco factory with a unique identifier (UID) that consists of a serial number and MAC address. These factory-assigned values are on a label at the bottom of the router; for convenience, these values are also in a barcode label that can be easily scanned for easy entry into the service provider’s...
  • Page 28 If the DOCSIS configuration file specifies that the router must download a secondary Cisco IOS image and a Cisco IOS configuration file, the router uses TFTP to download the image and configuration files into its local memory. It then installs the new Cisco IOS image and runs the configuration file.

  • Page 29: Provisioning Prerequisites

    Interface (RFI) specification (SP-RFII01-990731 or later revision). After the Cisco uBR905 router goes online, it sends data traffic between the attached CPE devices and the network. The service provider typically uses DHCP to assign IP addresses to the CPE devices. The number of IP addresses each subscriber can obtain depends on the services purchased from the provider.

  • Page 30: Upgrading The Software Image

    Upgrading the Software Image When Cisco IOS images are updated to new releases, the service provider can download them as needed to Cisco uBR905 routers installed in the field (based on the software licenses purchased). See the release notes for the router (listed in the “Related Documentation”...

  • Page 31: Data Operations

    Functional Overview Data Operations This section provides an overview of how data is transmitted to and from the Cisco uBR905 router across the cable system’s HFC network. Figure 1-7 illustrates a typical broadband data cable system, showing the network path between the Cisco uBR905 router and the CMTS headend equipment (Cisco uBR7200 series universal broadband router or other DOCSIS-compliant CMTS).

  • Page 32: Upstream Transmissions

    The Cisco uBR905 cable access router receives the upstream data from the CPE devices to which it is connected. It modulates this data for transmission on the coaxial cable system to the CMTS. The CMTS then routes the data to the appropriate destination (local server, Internet, and so forth) through its WAN interfaces.

  • Page 33: Security

    Baseline Privacy Interface BPI security is defined by the DOCSIS 1.0 BPI specification (SP-BPI-I02-990319 or later revision). Both the CMTS and Cisco uBR905 cable access router must support BPI security and enable its use before this option can be used.
  • Page 34 Chapter 1 Product Overview Functional Overview Cisco uBR905 Router Hardware Installation Guide 1-18 OL-0598-01 (9/2000)

  • Page 35: Chapter 2 Preparing For Installation

    This chapter recommends general safety guidelines to follow and identifies requirements to meet before going to a subscriber site to install a Cisco uBR905 cable access router. It also lists the major agency approvals for the router. For additional safety and regulatory information, see Appendix C, “Regulatory Compliance and Safety Information.”...

  • Page 36: Electrical

    Do not wear loose clothing, jewelry (including rings and chains), or other items that could get • caught on the cable access router. Fasten your tie or scarf and roll up your sleeves. Use only the power supply provided by Cisco to power the Cisco uBR905 cable access router. • •...

  • Page 37: Electrostatic Discharge

    The Cisco uBR905 cable access router consists of a printed circuit board that is housed in a metal enclosure. Electromagnetic interference (EMI) shielding and connectors are integral components of the enclosure.

  • Page 38: Prerequisites

    Site Requirements Prerequisites Before going to a subscriber site to install the Cisco uBR905 cable access router, verify that the following have been done: Ensure that a coaxial cable connection is run from the cable TV trunk to the subscriber building or •...

  • Page 39: Environmental

    Before plugging in and applying power to the Cisco uBR905 router, verify that the power source is within the values given in Appendix A, “Technical Specifications.”...

  • Page 40: Interference Considerations

    Strong EMI, especially when it is caused by lightning or radio transmitters, can destroy the signal drivers and receivers in the Cisco uBR905 router, and can even create an electrical hazard by conducting power surges through lines and into equipment. (Review the safety warnings in the “Electrical”...

  • Page 41: Distance Limitations

    The size of your networks and the distances between connections on the CATV network can affect the successful installation of a Cisco uBR905 router, which must be within 100 miles of the CMTS. This distance can also be defined in relation to the speed of light through the transmission network as being less than 2 msec from the CMTS to the Cisco uBR905 router and back again.

  • Page 42: Required Tools And Equipment

    Preparing for Installation Required Tools and Equipment Required Tools and Equipment Assemble the tools and equipment needed to install the Cisco uBR905 router at subscriber sites. Table 2-1 lists the recommended items that Cisco does not provide. Table 2-1 Recommended Tools, Cabling, and Equipment List...
  • Page 43 • Release notes are available for all Cisco IOS Release images After you have completed installation, give each subscriber a copy of the Quick Start, Cisco uBR905 Cable Access Router Subscriber Setup publication, along with any documentation your company provides.
  • Page 44 Chapter 2 Preparing for Installation Required Tools and Equipment Cisco uBR905 Router Hardware Installation Guide 2-10 OL-0598-01 (9/2000)

  • Page 45: Cisco Ubr905 Router Installation Checklist

    Cisco uBR905 Router Installation Checklist Table 3-1 presents a checklist, identifying the installation tasks to complete at each subscriber site. Use this table as a guide while installing the Cisco uBR905 cable access router. Cisco uBR905 Router Hardware Installation Guide...

  • Page 46: Cisco Ubr905 Router Installation Checklist

    TV services, install a cable splitter/directional System” section on coupler and high-pass filter as appropriate.) page 3-4 Use the Ethernet ports to connect the Cisco uBR905 router to CPE devices at the “Connecting the Ethernet site: Cables” section on...

  • Page 47: Physical Placement

    The AC-input power supply uses a power factor corrector that allows the Cisco uBR905 cable access router to operate in any country where the input voltage is between 100 and 240 VAC, and 50 or 60 Hz.

  • Page 48: Connecting To The Cable System

    Connecting to the Cable System To connect the Cisco uBR905 cable access router to the cable system: Step 1 Verify that the router is not connected to power.

  • Page 49: Connecting The Ethernet Cables

    Step 1 Locate all needed 10BaseT RJ-45 Ethernet cables: • Use straight-through Ethernet cables to directly connect up to four PCs to the Cisco uBR905 cable access router’s four Ethernet hub ports. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 50: Connecting Power

    Installing the Cisco uBR905 Router Connecting Power Use a crossover Ethernet cable to connect the Cisco uBR905 cable access router to an Ethernet hub • if more than four PCs or other LAN devices are to be connected at the site. Connect all devices to the hub using straight-through Ethernet cables.
  • Page 51 Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Warning Unplug the power cord before you work on a system that does not have an on/off switch. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 52: Router Power On And Initialization Sequence

    (except for the four Ethernet LEDs and the ACT LED) briefly come on and then go off. As the self-test is executed, various LEDs light to reveal diagnostic progress and turn off when self-test is complete. The OK LED then blinks as the router completes self-test and boots a Cisco IOS image. When this is Step 2 finished, the OK LED comes on again.

  • Page 53: Verifying Installation

    From a PC connected to the Cisco uBR905 router, start the Internet browser program installed on the Step 2 Enter a URL of your choice in your web browser. If a URL is not known, use http://www.cisco.com to connect to Cisco’s CCO web site.
  • Page 54 Chapter 3 Installing the Cisco uBR905 Router Verifying Installation Cisco uBR905 Router Hardware Installation Guide 3-10 OL-0598-01 (9/2000)

  • Page 55: Chapter 4 Troubleshooting

    Installation problems with Cisco uBR905 routers are commonly due to the cable system and its topography. LEDs on the front panel of the Cisco uBR905 router reveal operational status and help you determine problem areas. See Figure 4-1 for the layout of the LEDs on the router’s front panel; see Table 1-1 on page 1-7 for a description of these LEDs.

  • Page 56: Initialization And Self-Test Problems

    The console port is initialized and the banner is output to the console port. Next, the Cisco uBR905 router performs a self-test on the low memory area of the DRAM. When this test starts, the LINK, DS, US, and MSG LEDs come on.
  • Page 57 A memory or controller problem was detected while clearing the remaining DRAM. If all self-tests passed, the Cisco uBR905 router turns off all LEDs except OK and boots the Cisco IOS image stored in its Flash memory. The OK LED blinks during the boot process. If this LED does not start to blink, or if it continues blinking for more than ten minutes, see the “Power...

  • Page 58: Troubleshooting Subsystems

    Check the personal computer Get computer Can you Can you Troubleshoot and/or network view the view the personal I/F card tech web page? web page? computer assistance Contact your Installation system successful administrator Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 59 DOCSIS system signal. Downstream RF coaxial cable is not Reconnect the cable. LED is off. properly connected to the router. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 60: Power Subsystem

    Power Subsystem To help isolate a problem with the Cisco uBR905 router power subsystem, look at the OK LED. Does the LED remain on when self-test is finished and a software image booted? If yes, the power source is good and the power supply is functional.

  • Page 61: Coaxial Cable Subsystem

    Troubleshooting Troubleshooting Subsystems Coaxial Cable Subsystem For proper operation, the Cisco uBR905 router must be able to establish a connection with the service provider’s CMTS. There are many conditions inherent to coaxial cable that can inhibit this connection: Step 1 Verify the cable connection from the router to the HFC plant and headend by checking the video reception.

  • Page 62: Rf And Digital Subsystem

    PC Subsystem To isolate a problem with a PC that is connected to the Cisco uBR905 router: Step 1 Can you access a web page using the web browser installed on the computer?
  • Page 63 Click TCP/IP:AOL Dialup Adapter to highlight it. Click Remove. If the subscriber intends to use America Online, double-click the TCP/IP component associated with the dialup adapter. The TCP/IP Properties window appears with the IP Address tab in the foreground. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 64: Using The Reset Switch

    By default, the computer is assigned an IP address by the Cisco uBR905 router via DHCP. When set up correctly, the Cisco uBR905 router is the default Internet connection Note device. The subscriber might select the dialup adapter as an alternative connection path.

  • Page 65: Further Contacts

    Chapter 4 Troubleshooting Further Contacts The reset switch on the back panel of the Cisco uBR905 cable access router is recessed to Note prevent accidental resets of the router. To press the switch, use a blunt object, such as a pen or pencil point;...
  • Page 66 Chapter 4 Troubleshooting Further Contacts Cisco uBR905 Router Hardware Installation Guide 4-12 OL-0598-01 (9/2000)

  • Page 67: Appendix

    This appendix contains the technical specifications for the Cisco uBR905 cable access router. Physical, Power, and Environmental Specifications Table A-1 lists the Cisco uBR905 cable access router physical specifications and power requirements. Table A-1 Cisco uBR905 Cable Access Router Physical Specifications...

  • Page 68: Data Specifications

    Appendix A Technical Specifications Data Specifications Data Specifications Table A-2 lists the specifications for the Cisco uBR905 cable access router’s data ports. Table A-2 Cisco uBR905 Cable Access Router Data Specifications Description Downstream Values Upstream Values Frequency Range 88 to 860 MHz...
  • Page 69 Note Cisco IOS images must contain encryption software at both the CMTS and the Cisco uBR905 router. Both the router and CMTS must be enabled and properly configured to support encryption. Cisco uBR905 Router Hardware Installation Guide...
  • Page 70 Appendix A Technical Specifications Data Specifications Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 71: Appendix

    Connector and Cable Specifications This appendix describes the pinouts and cabling requirements for the interfaces and cables used on the Cisco uBR905 router. All connectors for these interfaces are on the rear-panel, as shown in Figure B-1. Figure B-1 Cisco uBR905 Cable Access Router Connectors...

  • Page 72: Ethernet Connector And Cabling

    • Note All three of the coaxial cables listed can be used to connect a Cisco cable modem card to the HFC network; however, the consistent use of RG-59 cable is preferred. If you connect an RG-59 cable to a cable modem card that was previously connected using RG-6 cable, the difference in the center connector diameter might cause intermittent connectivity loss.
  • Page 73 Appendix B Connector and Cable Specifications Ethernet Connector and Cabling Figure B-2 shows the RJ-45 connector and plug used for the Cisco uBR905 router’s Ethernet ports. Table B-1 lists the pinouts and signals for the RJ-45 connector. Figure B-2 RJ-45 Connector and Plug...

  • Page 74: Console Port Connector And Cables

    If the console port is connected to a laptop computer or other PC when the Cisco uBR905 is first powered-on, the initial system banner should be displayed on the computer’s console screen. If you do not see the system banner, verify that the laptop’s serial port is set correctly and that it is properly connected to the console port.

  • Page 75: Appendix

    The Cisco IOS software running on the Cisco uBR905 contains extensive features and functionality. Feature sets and operating modes differ based on the Cisco IOS release, the cable plant’s base operating parameters, and the services to be offered to subscribers. Documentation requirements vary for service providers and subscribers.

  • Page 76: Subscribers (End Users

    To obtain support, contact your service provider. Before contacting your service provider, note the MAC address and the UID found on a label at the bottom of your Cisco uBR905 cable access router. Agency Approvals for the Cisco uBR905 Safety: UL 1950, CSA 22.2 No.950, EN60950, IEC 60950, AS/NZS3260, TS001...

  • Page 77: Subscriber Safety

    Do not remove covers. No operator serviceable parts are inside. Refer servicing to qualified • personnel. Do not attempt to service or configure the Cisco uBR905 router yourself. Only authorized • personnel should service or configure the unit. If the unit requires service, contact your service provider.

  • Page 78: Lightning Activity Warning

    Varoitus Älä työskentele järjestelmän parissa äläkä yhdistä tai irrota kaapeleita ukkosilmalla. Attention Ne pas travailler sur le système ni brancher ou débrancher les câbles pendant un orage. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 79: Installation Warning

    Leia as instruções de instalação antes de ligar o sistema à sua fonte de energia. ¡Advertencia! Ver las instrucciones de instalación antes de conectar el sistema a la red de alimentación. Varning! Läs installationsanvisningarna innan du kopplar systemet till dess strömförsörjningsenhet. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 80: Tn Power Warning

    Ultimate disposal of this product should be handled according to all national laws and Warning regulations. Waarschuwing Het uiteindelijke wegruimen van dit product dient te geschieden in overeenstemming met alle nationale wetten en reglementen. Varoitus Tämä tuote on hävitettävä kansallisten lakien ja määräysten mukaisesti. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 81: No On/Off Switch Warning

    Før det skal utføres arbeid på et system som ikke har en av/på-bryter, skal strømledningen trekkes ut. Aviso Antes de começar a trabalhar num sistema que não possua um interruptor ON/OFF, desligue o cabo de alimentação. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 82: Qualified Personnel Warning

    ¡Atención! Estos equipos deben ser instalados y reemplazados exclusivamente por personal técnico adecuadamente preparado y capacitado. Varning Denna utrustning ska endast installeras och bytas ut av utbildad och kvalificerad personal. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 83: Jewelry Removal Warning

    (incluindo anéis, fios e relógios). Os objectos metálicos aquecerão em contacto com a corrente e em contacto com a ligação à terra, podendo causar queimaduras graves ou ficarem soldados aos terminais. Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

  • Page 84: Ground Conductor Warning

    Omgå aldri jordingslederen og bruk aldri utstyret uten riktig montert jordingsleder. Ta kontakt med det riktige organet for elektrisk inspeksjon eller en elektriker hvis du er usikker på om det finnes velegnet jording. Cisco uBR905 Router Hardware Installation Guide C-10 OL-0598-01 (9/2000)

  • Page 85: Router Grounding Warning

    O não cumprimento da correcta ligação a terra do router, evitando a tomada terra trifilar ou ligando incorrectamente à terra a saída de corrente, pode ter como resultado uma situação eléctrica potencialmente perigosa. Cisco uBR905 Router Hardware Installation Guide C-11 OL-0598-01 (9/2000)
  • Page 86 Underlåtenhet att korrekt ansluta skyddsjord till routern, antingen genom att förbikoppla det jordade kontaktdonet eller genom att använda ett strömuttag som inte är jordat på rätt sätt, kan skapa en potentiellt farlig elektrisk situation. Cisco uBR905 Router Hardware Installation Guide C-12 OL-0598-01 (9/2000)

  • Page 87: I N D E X

    1-12 using proper power cords power-on sequence 1-11 caution provisioning 1-10 cable modem, overheating RF interface specification 1-13 scoring coaxial cable connectors downstream transmissions coaxial cable description 1-15 Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 88 RJ-45 IOS images upgrading 1-14 power connections site requirements subsystem for troubleshooting 4-4, 4-6 jewelry, avoiding for safety surge suppression ungrounded power factor corrector, power supply power supply, physical description prerequisites Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 89 1-14 SP-RFII01-990731 RF interface specification 1-13 subsystems for troubleshooting coaxial cable power system specifications System status LED Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)
  • Page 90 Index Cisco uBR905 Router Hardware Installation Guide OL-0598-01 (9/2000)

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