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Cisco UBR7225VXR Hardware Installation Manual

Cisco UBR7225VXR Hardware Installation Manual

Universal broadband router
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Cisco uBR7225VXR
Universal Broadband Router
Hardware Installation Guide
THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO
CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS
MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY
PRODUCTS.
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Tel: 408 526-4000
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Fax: 408 527-0883
Text Part Number: OL-17309-01

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  • Page 1: Cisco Ubr7225Vxr Universal Broadband Router

    Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED.
  • Page 2 DAMAGES. Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company.

  • Page 3: Table Of Contents

    Cisco uBR7225VXR Subchassis 1-16 CompactFlash Disk 1-17 Preparing the Cisco uBR7225VXR Router for Installation C H A P T E R Safety Recommendations Lifting the Cisco uBR7225VXR Router Safely Safety with Electricity Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 4 Installing the Cisco uBR7225VXR Router C H A P T E R Cisco uBR7225VXR Router Installation Checklist Cisco uBR7225VXR Router Chassis Rack-Mounting Options Cable-Management Bracket Requirements Installing the Brackets on the Chassis Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 5 Installing Rack-Mount Brackets in the Middle of the Chassis Installing the Chassis in the Rack 3-10 Installing the Chassis in a Workbench or Tabletop Environment 3-12 Installing the Cable-Management Bracket on a Cisco uBR7225VXR Router in a Workbench or Tabletop Environment 3-13 Cabling 3-13...
  • Page 6 DOCSIS 1.1 Transmission Characteristics Downstream RF Channel Transmission Characteristics Upstream RF Channel Transmission Characteristics EuroDOCSIS Transmission Characteristics Downstream RF Channel Transmission Characteristics Upstream RF Channel Transmission Characteristics Electrical Input and Output Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 7 A P P E N D I X North American Channel Plans European Channel Plans Site Log A P P E N D I X L O S S A R Y N D E X Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 8 Contents Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide viii OL-17309-01...

  • Page 9: Document Revision History

    This guide provides hardware installation instructions for the Cisco uBR7225VXR universal broadband router. The guide contains procedures to unpack, install, and connect the Cisco uBR7225VXR router hardware that enables your cable television (CATV) headend or distribution hub to support digital data and Voice-over-IP (VoIP) services.

  • Page 10: Audience

    This guide is intended for cable system installers and technicians who physically install and connect the Cisco uBR7225VXR universal broadband router and associated equipment at the cable headend or distribution hub. Cable system installers and technicians should be familiar with their cable plant base operating parameters and service offerings.

  • Page 11: Document Conventions

    Router# Access to the privileged level usually requires a password. For additional information, refer to the related software configuration and reference documentation listed in the Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html •...

  • Page 12: Warning Definition

    Means the described action saves time. You can save time by performing the action described in the paragraph. Means the following information might help you solve a problem. For all warning translations, refer to the Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html...
  • Page 13 Utilize o número da instrução fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham este dispositivo. GUARDE ESTAS INSTRUÇÕES Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide xiii OL-17309-01...
  • Page 14 Använd det nummer som finns i slutet av varje varning för att hitta dess översättning i de översatta säkerhetsvarningar som medföljer denna anordning. SPARA DESSA ANVISNINGAR Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 15 Brug erklæringsnummeret efter hver advarsel for at finde oversættelsen i de oversatte advarsler, der fulgte med denne enhed. GEM DISSE ANVISNINGER Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 16 Preface Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 17: Obtaining Documentation And Submitting A Service Request

    Obtaining Documentation and Submitting a Service Request For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What’s New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html...
  • Page 18 Preface Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide xviii OL-17309-01...
  • Page 19 J.83 Annex A operation. The Cisco uBR7225VXR universal broadband router contains some or all of the following: Cable interface line cards that interface to the cable television network. The Cisco uBR7225VXR • card set includes varying upstream-to-downstream interface ratios with differing bandwidth and modulation schemes supported, as well as the capability to dynamically perform complex spectrum management and operate in a 6-MHz or 8-MHz channel width environment.

  • Page 20: Chapter 1 Cisco Ubr7225Vxr Overview

    NPE. The Cisco uBR7225VXR universal broadband router may be installed on a tabletop or rack-mounted. A rack-mount kit ships with each router. The rack-mount kit includes the hardware needed to mount the router in a standard 19-inch equipment rack or telco-type rack.

  • Page 21: Cisco Ubr7225Vxr Router Chassis

    The front of the Cisco uBR7225VXR chassis provides access to two cable interface line cards. See Figure 1-1. The rear of the Cisco uBR7225VXR provides access to the network processing engine and up to two power supplies. See Figure 1-2.

  • Page 22: Card Slot And Logical Interface Numbering

    MAC address assignments for cable interface line card interfaces. Card Slot and Logical Interface Numbering In the Cisco uBR7225VXR universal broadband router, the slot number is the chassis slot in which a cable interface card is installed.

  • Page 23: Mac-Layer Address

    Storing the MAC addresses for every slot in one central location means that the addresses stay with the memory device on which they are stored. For information on the commands used to configure your Cisco uBR7225VXR router, refer to the Cisco IOS Configuration Fundamentals Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/ios/fundamentals/configuration/guide/12_4/cf_12_4_book.html...

  • Page 24: Supported System Configurations Overview

    Supported System Configurations Overview Supported System Configurations Overview The Cisco uBR7225VXR universal broadband router is installed at a cable television headend or a distribution hub. Related networking and RF equipment, servers, and other host computers are installed, along with the Cisco uBR7225VXR router, to support digital data transmission.

  • Page 25: Supported System Configurations Overview

    Supported System Configurations Overview Telco return cable interfaces transmit over the PSTN. Dial-up servers and other equipment – handle the upstream traffic and pass appropriate data to the Cisco uBR7225VXR routers. For telco return specifics, refer to the “Telco Return” section on page 1-9.

  • Page 26: Vpn Services

    Information for Cisco uBR7200 Series Universal Broadband Routers, at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html IP Telephony Services The Cisco uBR7225VXR router supports the transmission of packetized voice and facsimile traffic over the cable and IP backbone network. Figure 1-6 on page 1-9 shows a typical two-way configuration involving Voice-over-IP (VoIP) telephony services.

  • Page 27: Telco Return

    PSTN and IP network path that terminates at the Cisco uBR7225VXR router. Upstream data transmission takes place over a telephone modem (external or internal to a cable interface, as well as a cable interface line card in a PC, based on the third-party cable interface vendor) connected to an analog telephone line.

  • Page 28: Hardware Component Descriptions

    • Network Processing Engine The network processing engine (NPE) maintains and executes the system management functions for the Cisco uBR7225VXR router. The network processing engine performs the following system management functions: Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide 1-10...

  • Page 29: Npe Comparisons

    To prevent system errors and problems, use the CPU reset button only at the direction of your service Caution representative. NPE Comparisons The network processing engines used in the Cisco uBR7225VXR router are the Cisco uBR7200-NPE-G1 and Cisco uBR7200-NPE-G2. The Cisco uBR7200-NPE-G1 should use the boothelper image ubr7200-kboot-mz.122-33.SCA.bin Note available from Cisco IOS Release 12.3(33)SCA and later.

  • Page 30: Cisco Cable Interface Line Cards

    .html Cisco Cable Interface Line Cards Cisco cable interface line cards (also known as line cards), with internal IF-to-RF upconverters, serve as the RF interface between the cable headend and both DOCSIS-based cable modems and EuroDOCSIS-based cable modems and set-top boxes (STBs). Cisco cable interface line cards separate downstream output and upstream input cable interfaces on the Cisco uBR7225VXR router to enable downstream and upstream signal combining and splitting arrangements.

  • Page 31: Power Supplies

    The Cisco uBR7225VXR router supports an optional, second power supply for load-sharing and power redundancy. If you purchased a Cisco uBR7225VXR router and you want to install a second power supply, you must order the second power supply separately.

  • Page 32: Power Supplies

    When this occurs, one or both of the power supply front panel LEDs will turn red. The Cisco uBR7225VXR power supply must then be reset by manually switching the power switch off and then back on to allow the router to recover.
  • Page 33 3 inches of clearance. (See the “Site Requirements” section on page 2-5.) Figure 1-10 Internal Airflow—Top View Power supply end Cable interface line card end Inlet flow Exhaust air (fan side) Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide 1-15 OL-17309-01...

  • Page 34: Cisco Ubr7225Vxr Chassis

    Subchassis and midplane bay (at rear) Fan tray Cable interface line card slots Subchassis and Midplane The subchassis and midplane provide these functions for the Cisco uBR7225VXR router: Distributes power from the power supply. • • Bridges the peripheral component interconnect (PCI) buses from the cable interface line cards to the Cisco uBR7200-NPE-G1 or the Cisco uBR7200-NPE-G2.

  • Page 35: Compactflash Disk

    CompactFlash Disk The Cisco uBR7225VXR universal broadband router has one CompactFlash Disk slot that uses CompactFlash Disks. The device in this slot is always addressed as disk2: when using Cisco IOS command-line interface (CLI) commands. CompactFlash Disks are smaller in size than Type 2 Flash Disks but provide the same AT Attachment (ATA) interface and equivalent functionality.
  • Page 36 The CompactFlash Disk also supports the Cisco IOS File System feature, which provides a single interface to all of the router’s file systems, including the Flash Disks and flash memory, as well as network file systems such as File Transfer Protocol (FTP) and Trivial FTP (TFTP) servers.

  • Page 37: Preparing The Cisco Ubr7225Vxr Router For Installation

    Before installing, configuring, or maintaining the Cisco uBR7225VXR router, review the safety warnings listed in the Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html...

  • Page 38: C H A P T E R 2 Preparing The Cisco Ubr7225Vxr Router For Installation

    3-wire electrical grounding-type plug, which only fits into a grounding-type power outlet. This is a safety feature. The equipment grounding should be in accordance with local and national electrical codes. The Cisco uBR7225VXR router operates safely when it is used in accordance with its marked • electrical ratings and product usage instructions.

  • Page 39: Safety With Electricity

    You must power down the system before removing or replacing the network processing engine. The cable interface line cards and redundant power supplies are designed to be removed and replaced while the system is operating, without presenting an electrical hazard or damage to the system. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 40: Preventing Electrostatic Discharge Damage

    Always place the network processing engine or cable interface line card component side up on an antistatic surface or in a static shielding bag. If you are returning the item to the factory, immediately place it in a static shielding bag. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 41: Site Requirements

    AC Power The AC-input power supply uses a power factor corrector that allows the Cisco uBR7225VXR router to operate on input voltage and frequency within the ranges of 100 to 240 VAC and 50/60 Hz.

  • Page 42: Site Configuration: Maintaining Normal Operation

    Preparing the Cisco uBR7225VXR Router for Installation Site Requirements To provide airflow through the Cisco uBR7225VXR router, cooling air is drawn in through the air intake vent on the right side of the chassis (when viewing the router from the front) and is exhausted through the left side of the chassis.

  • Page 43: Power Considerations

    Refer to the following documentation for configuration information. Cisco uBR7200 Series Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html Cisco IOS CMTS Cable Software Configuration Guide at the following URL: http://www.cisco.com/en/US/docs/ios/cable/configuration/guide/12_2sc/cbl_12_2sc_book.html Cisco IOS CMTS Cable Command Reference Guide at the following URL: http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html...

  • Page 44: Installation Tools

    2 Mbps. The speed of an interface often depends on the speed of the remote device to which it is attached. Installation Tools Your Cisco uBR7225VXR universal broadband router chassis is fully assembled at the factory; no assembly is required. However you will need the following tools and equipment to install the chassis and the rack-mount and cable-management kit: •...

  • Page 45: Equipment Required To Verify Your Plant's Rf Setup

    DOCSIS cable modem or DOCSIS-based STB and CPE devices to test full system functionality. • Note When the Cisco uBR7225VXR router starts running, IF downstream output is generated. For more information, see the “Powering On the Cisco uBR7225VXR Router” section on page 3-18.

  • Page 46: Provisioning The Cable Headend

    CNR or CSRC provisioning documentation, or both. • Cisco IOS software documentation, if ordered. Step 3 Verify that the number of cable interface line cards installed in your Cisco uBR7225VXR router matches the number of cable interface line cards that you ordered. Step 4 Refer to Appendix G, “Site Log,”...

  • Page 47: Headend Certification

    In two-way cable networks, the diplex filter takes the upstream and downstream and combines them on one cable for the cable interface. The downstream output signal from the Cisco uBR7225VXR router runs through the upconverter and then enters the high filter port of the diplex filter. The signal exits the common port of the filter and is distributed to the cable interfaces.

  • Page 48: Dhcp, Dns, Tftp, And Td Servers

    Because a telco return cable network relies on the local telephone system to complete the upstream data path to the Cisco uBR7225VXR router, you need to be sure that you provision your network with a dial-up access server and other required equipment through which remote cable interfaces will gain access to your headend.

  • Page 49: Authentication, Authorization, And Accounting Servers

    Cisco IOS Release 12.2(33)SCA and later versions support VoIP communication using the SGCP 1.1 protocol on uBR7225VXR. Just as with H.323 systems, VoIP gateways in an SGCP environment convert IP-based voice packets into standard PSTN voice traffic, making the process of placing calls over the IP network transparent to users.

  • Page 50: Headend Wiring

    Strong EMI, especially when caused by lightning or radio transmitters, can destroy the signal drivers • and receivers in the Cisco uBR7225VXR router, and can even create an electrical hazard by conducting power surges through lines and into equipment. (Review the safety warnings in the “Safety with Electricity”...

  • Page 51: Equipment Racks

    If a power strip impairs a rear rack-mount installation, remove the power strip before installing the Cisco uBR7225VXR router in the rack, then replace it after the chassis is installed. As an alternative, you can mount the Cisco uBR7225VXR router on an equipment shelf if the rack dimensions allow you to secure the router to the shelf, and the overall configuration permits safe installation and access.
  • Page 52 We recommend the rear bracket mounting system for four-post racks because this method enables you Note to keep cables from protruding too far out in front of the Cisco uBR7225VXR router, and simultaneously manage the cables at the front of the chassis with the cable-management bracket.

  • Page 53: Site Preparation Checklist

    Options” section on page 3-2. Caution Do not install the Cisco uBR7225VXR chassis in an enclosed rack or room that is not properly ventilated or air-conditioned. The Cisco uBR7225VXR chassis overheats if the input air temperature reaches 105 Site Preparation Checklist Before installing the Cisco uBR7225VXR router, assemble the equipment needed to support your network configuration and subscriber service offering.

  • Page 54: Component Checklists

    Check off the equipment as it is unpacked. • Titles and quantities of documents will vary. • Table 2-3 provides the list to verify the contents of the shipping container for the Cisco uBR7225VXR router. Table 2-3 Cisco uBR7225VXR Router Component List...

  • Page 55: Cisco Ubr7225Vxr Router Installation Checklist

    “Cisco uBR7225VXR Router Chassis Rack-Mounting Options” section on page 3-2. If you do not plan to install your Cisco uBR7225VXR router in an equipment rack, proceed to the “Installing the Chassis in a Workbench or Tabletop Environment” section on page 3-12.

  • Page 56: C H A P T E R 3 Installing The Cisco Ubr7225Vxr Router

    We recommend the rear bracket mounting system for 4-post racks. This method enables you to keep Note cables from protruding too far out in front of the Cisco uBR7225VXR router and to simultaneously manage the cables at the front of the chassis with the cable-management bracket.
  • Page 57 3-5. If you want the chassis in a telco-type rack, install the rack-mount brackets in the middle of the • chassis in the orientation shown in Figure 3-5 on page 3-5. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 58 Installing the Chassis in a 4-Post Rack—Flush-Mounted Front Installation 1 Rack-mount bracket See the “Installing Rack-Mount Brackets on the Front of the Chassis” section on page 3-8 for bracket mounting information. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 59: Cable-Management Bracket Requirements

    There are two cable-management bracket configurations available for rack-mounting the Cisco uBR7225VXR router. In the first configuration, for a 4-post rack, the rack-mount brackets are installed at the rear of the chassis and the cable-management bracket is installed at the right front of the chassis.
  • Page 60 Installing the Chassis in a 4-Post Rack with an Installed Cable-Management Bracket Rack-mount bracket 2 Cable-management bracket Figure 3-7 Installing the Chassis in a Telco-Type Rack with an Installed Cable-Management Bracket 1 Rack-mount bracket 2 Cable-management bracket Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 61: Installing The Brackets On The Chassis

    Installing the Rack-Mount Brackets on the Rear of the Chassis 1 Rack-mount bracket There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR router. Four holes Note are used for front and middle mount, and five holes are used for rear mount.

  • Page 62: Installing Rack-Mount Brackets On The Front Of The Chassis

    Figure 3-10 on page 3-9. There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR. Four holes are used Note for front and middle mount, and five holes are used for rear mount.

  • Page 63: Installing Rack-Mount Brackets In The Middle Of The Chassis

    Figure 3-11. Step 2 There are five holes in each of the rack-mount brackets for the Cisco uBR7225VXR router. Four holes Note are used for front and middle mount, and five holes are used for rear mount. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide...

  • Page 64: Installing The Chassis In The Rack

    After installing the brackets on the chassis, mount the chassis by securing the rack-mount brackets to the posts or mounting strips in the rack using the slotted screws provided. When installing the uBR7225VXR in a rack, ensure that paint is removed from the rack and an Note anti-oxidant is applied at the contact points to ensure reliable metal to metal contact.
  • Page 65 While keeping the brackets flush against the posts or mounting strips, position the router so that the holes Step 5 in the brackets are aligned with those in the mounting strips. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide 3-11 OL-17309-01...

  • Page 66: Installing The Chassis In A Workbench Or Tabletop Environment

    When installing the router on a workbench or tabletop, ensure that the surface is clean and in a safe location and that you have considered the following: The Cisco uBR7225VXR router requires at least 3 inches (7.72 cm) of clearance at the inlet and •...

  • Page 67: Installing The Cable-Management Bracket On A Cisco Ubr7225Vxr Router In A Workbench Or Tabletop Environment

    Ensure that there is the appropriate amount of space around the router. Step 5 If you want to install a cable-management bracket on the Cisco uBR7225VXR router, proceed to the following section, “Installing the Cable-Management Bracket on a Cisco uBR7225VXR Router in a Workbench or Tabletop Environment.”...

  • Page 68: Connecting Cable Interface Line Card Cables

    The NPE contains the console and auxiliary ports. The console port is a RJ-45 receptacle for connecting a data terminal, which you use to configure the interfaces and bring up the Cisco uBR7255VXR router. The auxiliary port is a RJ-45 receptable for connecting a modem or the other DCE device (such as a channel service unit/data service unit [CSU/DSU]) to the router.

  • Page 69: Console Port Signals

    <— Receive Data —> Request To Send (used for hardware flow control) <— Clear To Send (used for hardware flow control) <— Data Set Ready Signal Ground – Signal Ground Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide 3-15 OL-17309-01...

  • Page 70: Protective Grounding

    Cisco uBR7225VXR Ground Lug Location uBR7225-VXR uBR7225-VXR 1 Ground lug location Connecting Power Following are the procedures for connecting AC-input power to your Cisco uBR7225VXR universal broadband router. High leakage current - earth connection essential before connecting to system power supply. Warning Statement 342 Care must be given to connecting units to the supply circuit so that wiring is not overloaded.

  • Page 71: Connecting To The Ac-Input Power Supply

    A certified external Surge Protective Device (SPD) is used at the AC-input of the Cisco uBR7225VXR universal broadband router. To connect to the AC-input power supply: At the rear of the Cisco uBR7225VXR universal broadband router, ensure that the power switch on the Step 1 power supply is in the off (0) position.

  • Page 72: Powering On The Cisco Ubr7225Vxr Router

    “Powering On the Cisco uBR7225VXR Router” section on page 3-18. Powering On the Cisco uBR7225VXR Router After installing your Cisco uBR7225VXR universal broadband router and connecting cables, power on the universal broadband router as follows: Check for the following: Step 1 •...

  • Page 73: Configuring The Interfaces

    Step 2 At the rear of the Cisco uBR7225VXR router, place the power switch on the power supply in the on (|) position. Repeat this step if a second power supply is installed. The power supply OK LEDs comes on.
  • Page 74 LED descriptions and to check the status of the interfaces. Your Cisco uBR7225VXR chassis installation is complete. To set up your cable network headend, proceed to Chapter 4, “Connecting the Cisco uBR7225VXR Router to the Cable Headend.”...
  • Page 75 C H A P T E R Connecting the Cisco uBR7225VXR Router to the Cable Headend This chapter describes how to connect the Cisco uBR7225VXR universal broadband router to a cable headend and contains the following sections: • Two-Way Data Headend Architecture, page 4-2 One-Way Data Headend Architecture, page 4-3 •...

  • Page 76: C H A P T E R 4 Connecting The Cisco Ubr7225Vxr Router To The Cable Headend

    Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Two-Way Data Headend Architecture Two-Way Data Headend Architecture Figure 4-1 shows a typical headend configuration configured for two-way data, including digitized voice and fax. Figure 4-1 Typical Cable Headend Configuration for Two-Way Data...

  • Page 77: One-Way Data Headend Architecture

    Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend One-Way Data Headend Architecture One-Way Data Headend Architecture Figure 4-2 shows a typical headend configuration configured for one-way (downstream) data in a telco return cable system. Figure 4-2 Typical Cable Headend Configuration for One-Way (Telco Return) Data...

  • Page 78: Connecting And Configuring The Downstream

    Connecting and Configuring the Downstream After you install the Cisco uBR7225VXR universal broadband router in your headend site, you must connect the Cisco uBR7225VXR router to the HFC network and configure the network. The following sections describe how to connect to and configure the downstream.

  • Page 79: Measuring The Downstream Rf Signal Using The Channel Power Option On A Spectrum Analyzer

    Refer to the user guide that accompanied your spectrum analyzer to determine the exact steps required Note to use your analyzer to perform these measurements. Connect a spectrum analyzer to the downstream connector on a Cisco cable interface line card installed Step 1 in a Cisco uBR7225VXR router.
  • Page 80 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-3 Viewing the Downstream IF Signal on a Spectrum Analyzer Measure the IF signal using the channel power option on your spectrum analyzer. Set your channel Step 5 spacing and your channel bandwidth to 6 MHz.
  • Page 81 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-5 Measuring the IF Channel Power Using Video Averaging The approximate in-channel peak-to-valley flatness may be verified using the spectrum analyzer’s video Note averaging feature.
  • Page 82 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-6 Overloaded Spectrum Analyzer Input Step 4 Set the input of the upconverter to a digital QAM signal and the output level to the manufacturer’s recommended settings.
  • Page 83 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-8 Measuring the RF Signal at the Upconverter Output—Overload Condition Corrected with Attenuation Change the spectrum analyzer settings to view the digital channel power. This setting enables you to see Step 7 if there is too much power on the upconverter output.
  • Page 84 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-10 Measuring the RF Signal at the Upconverter Output—Output Adjusted to Correct Range Select the video averaging feature on the spectrum analyzer. The signal becomes smoother and Step 9 frequency response problems might become visible.

  • Page 85: Measuring The Downstream Rf Signal Using Catv Mode On A Spectrum Analyzer

    Refer to the user guide that accompanied your spectrum analyzer to determine the exact steps required Note to use your analyzer to perform these measurements. Connect a spectrum analyzer to the downstream connector on a Cisco cable interface card installed in a Step 1 Cisco uBR7225VXR router.
  • Page 86 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-12 Viewing the Downstream IF Signal on a Spectrum Analyzer in CATV Mode—Initial Screen Advance to the last of the three screens in this display. Your analyzer should display a signal similar to...
  • Page 87 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-14 Measuring the IF Signal on a Spectrum Analyzer in CATV Mode—Digital Channel Power Screen Using the spectrum analyzer’s reference level control, adjust the amplitude of the displayed signal until...
  • Page 88 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-16 Measuring the IF Signal on a Spectrum Analyzer in CATV Mode—Digital Channel Power Screen (Using Video Averaging) The approximate in-channel peak-to-valley flatness can be verified using the spectrum analyzer’s video Note averaging feature.
  • Page 89 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-17 Viewing the Downstream RF Signal on a Spectrum Analyzer in CATV Mode—Initial Screen Advance to the last of the three screens in this display. Your analyzer should display a signal similar to...
  • Page 90 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-19 Measuring the RF Signal at the Upconverter Output in CATV Mode—Digital Channel Power Screen Using the spectrum analyzer’s reference level control, adjust the amplitude of the displayed signal until Step 9 the signal peak is within the top graticule of the analyzer’s display grid, as shown in...
  • Page 91 Appendix G, “Site Log.” as you verify them. This will assist in troubleshooting the Cisco uBR7225VXR router installation later in the process. Step 13 After you have analyzed and adjusted the RF signal according to the steps outlined on the preceding pages, proceed to the “Connecting and Configuring the Upstream”...

  • Page 92: Connecting And Configuring The Upstream

    Figure 4-22.) The default upstream input level to the Cisco uBR7225VXR cable interface line card is 0 dBmV. You may adjust the upstream input level to other values using the Cisco IOS software running on your router. The Cisco uBR7225VXR router uses automatic power control when transmitting to remote cable modems.

  • Page 93: Testing The Upstream Configuration

    Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting and Configuring the Upstream Figure 4-22 Connecting and Configuring the Upstream Cisco uBR7225VXR Upstream X-level test point signal level 2-way must be the same for all splitter optical receivers (+/- 0.5 dB), (combiner) See Fig.
  • Page 94 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting and Configuring the Upstream This “X-level” test point measurement will be different for every fiber node in the HFC network until you adjust the attenuation on the upstream. You must adjust the attenuation so that this measurement is the same on every fiber node.
  • Page 95 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Connecting and Configuring the Upstream Figure 4-25 Calibrating Multiple “X-level” Test Points Connected to Multiple Upstream Ports Cisco uBR7225VXR Downstream Upstream Cable 0 dBmV Reverse optical Optical modems transmitter...

  • Page 96: Measuring The Upstream Rf Signal

    Cisco IOS Release 11.3(6)NA or later releases and Cisco IOS Release 12.0(5)T1 or later releases. For example, if you wanted to view the center frequency of port 0 on a cable interface card in slot 3, you would enter the show controller cable 3/0 command.
  • Page 97 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-26 Measuring the Upstream RF Signal—Setting the Resolution and Video Channel Bandwidth The horizontal line passing through the center of the spectrum analyzer display in...
  • Page 98 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Refer to the documentation that accompanied your particular spectrum analyzer for detailed instructions Note on activating and positioning the trigger line. A known workaround exists for the Agilent 8591C spectrum analyzer. After activating and positioning the trigger line in video mode, you must press the “video”...

  • Page 99: Analyzing The Upstream Rf Signal

    When you have set up your spectrum analyzer to accurately read the upstream RF signal, you can verify that a remote cable modem is operating as it should by pinging the modem via a console terminal. Log in to your Cisco uBR7225VXR universal broadband router with a console terminal. Step 1 Adjust the sweep time on your spectrum analyzer to 20 microseconds.
  • Page 100 1.5 dB. Differences greater than 1.5 dB indicate a possible cable plant or remote cable modem problem. To further illustrate this point, you can log in to your Cisco uBR7225VXR router using a console Note terminal and enter the show cable modem command to obtain a report of the receive power ratings for each modem.
  • Page 101 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-31 Analyzing the Upstream RF Signal—Multiple Active Remote Cable Modems (A) Figure 4-32 Analyzing the Upstream RF Signal—Multiple Active Remote Cable Modems (B)

  • Page 102: Using The Zero-Span Method With Adjacent Upstream Channels

    Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal The importance of this example is to bring to your attention the need for minimal outside plant noise. Time-varying, fast noise can cause bit errors in packet transmissions, rendering your communication link unreliable, if not unusable.
  • Page 103 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Display a signal complete with preamble and upstream data transmission information similar to the Step 1 resulting signal from Step 3 through Step 10 under the “Measuring the Upstream RF Signal Using a...
  • Page 104 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-35 Vector Signal Analyzer Plot of Upstream Data Burst The upper graph in Figure 4-35 represents the frequency domain and the lower graph represents the time domain.
  • Page 105 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-36 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only) Figure 4-35 Figure 4-36 illustrate the benefit of properly adjusting the center frequency of your spectrum analyzer to enable the power measurement of the preamble to match the power measurement of the rest of the digital transmission.
  • Page 106 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-37 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only)—QPSK Demodulation Mode Switch your vector signal analyzer over to quaternary phase shift keying (QPSK) demodulation mode.
  • Page 107 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-38 Vector Signal Analyzer Plot of Upstream Data Burst (Preamble Only)—Digital Demodulation Mode Before moving on to Step 3, be sure to hook your spectrum analyzer back up to the upstream signal Note source.
  • Page 108 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-39 Preamble Amplitude Before Center Frequency Adjustment The slight amplitude variations shown in these figures are normal signal level variations between bursts Note in the upstream channel.
  • Page 109 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal Figure 4-40 Preamble Amplitude Recovery After Center Frequency Adjustment To get an even better look at the patterns and dramatic shifts in amplitude within the preamble itself, you can accelerate the sweep time for your zero-span signal processing.
  • Page 110 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the Upstream RF Signal The 4.25 dB decrease in amplitude is due to a combination of half of the channel bandwidth (3 dB) and Note an additional 1.25 dB decrease attributed to the digital channel filter mask, known as the “alpha.” The value of alpha is 25 percent of an upstream DOCSIS channel’s width, and the peak signal energy spread...

  • Page 111: Measuring The Rf Signal At The Forward Test Point On A Laser Transmitter

    Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter The slight “ramp-up” at the beginning of the preamble when viewed in this mode is attributed to the time Note required to charge the spectrum analyzer’s detector circuit.
  • Page 112 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter Figure 4-45 Downstream Forward Test Point on the Laser Transmitter—Video Channel Display Select the carrier level (or amplitude) function.
  • Page 113 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Measuring the RF Signal at the Forward Test Point on a Laser Transmitter Figure 4-47 Downstream Forward Test Point on the Laser Transmitter—Digital Channel Display Step 6 Go to the main menu on the spectrum analyzer and advance the screen displays (next screen) until the digital channel power display is shown.

  • Page 114: Configuring The Digital Signal

    Cisco uBR7225VXR universal broadband router and cable modems. We recommend installing a Cisco uBR900 series cable access router at the headend to verify the digital data configuration. For instructions on how to install a Cisco uBR900 series access router, refer to the...
  • Page 115 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal Careful system design and operation can prevent potentially serious intermittent performance problems across your cable interface network. Each cable operator should make use of the following guidelines and practices to ensure reliable operation of any 64-QAM based digital network: “NCTA Recommended Practices for Measurements on Cable Television Systems”...
  • Page 116 Chapter 4 Connecting the Cisco uBR7225VXR Router to the Cable Headend Configuring the Digital Signal Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide 4-42 OL-17309-01...

  • Page 117: Chapter 5 Maintaining The Cisco Ubr7225Vxr Router

    To replace a cable interface line card with a different type of line card (for example, hot swapping from a Cisco uBR-MC16U to a Cisco uBR-MC28U, you must copy your startup configuration to your running configuration on the Cisco uBR7225VXR router to enable the interfaces on the new cable interface line card.

  • Page 118: Environmental Monitoring And Reporting Functions

    The system recognizes the signals and the sequence in which it receives them. When you remove or insert a cable interface line card in a Cisco uBR7225VXR router, the midplane pins send signals to notify the system, which then does the following: Rapidly scans the midplane for configuration changes.

  • Page 119: Reporting Functions

    Reporting Functions The Cisco uBR7225VXR router displays warning messages on the console if chassis interface-monitored parameters exceed a desired threshold. You can also retrieve and display environmental status reports with the show environment, show environment all, show environment last, and show environment table commands.
  • Page 120 Air temperature is measured and displayed, and the DC voltage supplied by the power supply is also displayed. Following is sample output of the show environment last command for a Cisco uBR7225VXR router: Router# show environment last...
  • Page 121 5-1. The display also lists the shutdown threshold for the system. You can abbreviate the command to sh env table. Following is sample output of the show environment table command for a Cisco uBR7225VXR router: Router# show environment table Sample Point...

  • Page 122: Fan Failures

    Envm stats saved 2 time(s) since reload Fan Failures When the system power is on, the Cisco uBR7225VXR router fans should be operational. The system continues to operate if a fan fails; however, if the air temperature exceeds a defined threshold, the system controller displays warning messages on the console terminal and, if the temperature exceeds the shutdown threshold, it shuts down the system.

  • Page 123: Chapter 6 Troubleshooting

    For cable-specific commands for the Cisco uBR7225VXR universal broadband router, refer to the Cisco IOS CMTS Cable Command Reference Guide at the following URL: http://www.cisco.com/en/US/docs/ios/cable/command/reference/cbl_book.html...

  • Page 124: Problem Solving With Subsystems

    LED on each cable interface line card indicates if the cable interface line card is initialized. A cable interface line card that is partially installed in the midplane can the cause system to hang and Caution crash. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 125: Identifying Startup Problems

    The following section helps you isolate a problem to one of the subsystems and directs you to the appropriate troubleshooting section. Identifying Startup Problems When you start up the Cisco uBR7225VXR router for the first time, observe the startup sequence described in the “Powering On the Cisco uBR7225VXR Router” section on page 3-18.

  • Page 126: Power Subsystem

    If a second power supply is available, and your Cisco uBR7225VXR router has a redundant power supply bay, install the second power supply in the second bay if there is no power supply installed in that bay.

  • Page 127: Processor Subsystem

    The network processing engine (NPE-G1 or NPE-G2) used in Cisco uBR7225VXR allows the router to Note work without an I/O controller. NPE-G1 and NPE-G2 works with both Cisco uBR7225 and Cisco uBR7246 chassis.

  • Page 128: Troubleshooting Cable Interface Line Cards

    Reseat the network processing engine in its slot. Restart the router. Verify that you are running a version of Cisco IOS software that supports the NPE you are using: Step 2 For the latest Cisco IOS software release information, refer to the Cisco uBR7200 series release notes at the following URL: http://www.cisco.com/en/US/products/hw/cable/ps2217/prod_release_notes_list.html...

  • Page 129: Other Troubleshooting Information Websites

    If the Cable Modem Termination System (CMTS) has not been properly set up to support digital data, the Cisco uBR7225VXR router might start up, but fail to support data transmission. You can use a router with diagnostic capabilities, such as the Cisco uBR900 series cable access routers, to verify the downstream signal originating from a Cisco uBR7225VXR router.
  • Page 130 Verify that the line card DS output level is correct (+32 dBmV or +42 dBmV). Make sure that the Cisco uBR7225VXR line card IF input to the upconverter is within an acceptable range (check the upconverter manufacturer’s specifications).

  • Page 131: Appendix

    A P P E N D I X Cisco uBR7225VXR Router Specifications This appendix provides information on the Cisco uBR7225VXR universal broadband router physical and system specifications. Cisco uBR7225VXR Physical and System Specifications Table A-1 lists the Cisco uBR7225VXR physical specifications, power requirements, and software compatibility.

  • Page 132: A P P E N D I X A Cisco Ubr7225Vxr Router Specifications

    EMI: FCC Class A, CSA Class A, EN60555-2, EN55022 Class A, VCCI Class 2, AS/NRZ 3548 Class A Immunity: IEC-1000-4-2, IEC-1000-4-3, IEC-1000-4-4, IEC-1000-4-5, IEC-1000-4-6, IEC-1000-4-11, IEC 1000-3-2 See the Regulatory Compliance and Safety Information for Cisco uBR7200 Series Universal Broadband Routers at the following URL: http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/regulatory/compliance/ub72rcsi.html 1. W = watts 2.

  • Page 133: Appendix

    Symbol Rate, Bandwidth, Data Rate, Data Rate, Data Rate, Nominal Data ksym/sec Mbps Mbps Mbps Rate, Mbps 0.20 0.32 ~0.3 0.64 ~0.6 0.40 0.64 ~0.6 1.28 ~1.2 0.80 1.28 ~1.2 2.56 ~2.3 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 134: Docsis 1.0 Transmission Characteristics

    –30 dBc @ >1.5 microseconds Carrier hum modulation Not greater than –26 dBc (5%) Not longer than 25 μsec at a 10-Hz average rate Burst noise Signal level slope, 50-750 MHz 16 dB Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 135: Upstream Rf Channel Transmission Characteristics

    1. Ingress avoidance or tolerance techniques may be used to ensure operation in the presence of time varying discrete ingress signals that could be as high as 0 dBc. (CableLabs1) 2. Amplitude and frequency characteristics sufficiently strong to partially or wholly mask the data carrier. 3. Impulse noise levels more prevalent at lower frequencies (<15 MHz). Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 136: Docsis 1.1 Transmission Characteristics

    Maximum analog video carrier level at the cable modem input 17 dBmV Maximum number of analog carriers 1. Measured relative to a QAM signal that is equal to the nominal video level in the plant. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 137: Upstream Rf Channel Transmission Characteristics

    2. Amplitude and frequency characteristics sufficiently strong to partially or wholly mask the data carrier. 3. Impulse noise levels more prevalent at lower frequencies (<15 MHz). EuroDOCSIS Transmission Characteristics The following tables provide information on the assumed RF channel transmission characteristics for EuroDOCSIS. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 138: Downstream Rf Channel Transmission Characteristics

    2. This presumes that the digital carrier is operated at analog peak carrier level. When the digital carrier is operated below the analog peak carrier level, the carrier-to-noise ratio may be less. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 139: Upstream Rf Channel Transmission Characteristics

    1. Ingress avoidance or tolerance techniques may be used to ensure operation in the presence of time varying discrete ingress signals that could be as high as 0 dBc. 2. Amplitude and frequency characteristics sufficiently strong to partially or wholly mask the data carrier. 3. Impulse noise levels more prevalent at lower frequencies (<15 MHz). Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 140: Electrical Input And Output

    QAM-16: +8 to +55 dBmV (+68 to +115 dBmicroV) • QPSK: +8 to +58 dBmV (+68 to +118 dBmicroV) • Modulation type QPSK and QAM-16 Symbol rate (nominal) 160 ksym/sec 320 ksym/sec 640 ksym/sec 1280 ksym/sec 2560 ksym/sec Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 141 1600 kHz 3200 kHz Output impedance 75 ohms DOCSIS: >6 dB (5–42 MHz) Output return loss • EuroDOCSIS: >6 dB (5–65 MHz) • Connector F connector per ISO-169-24 (common with the input) Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 142: Electrical Input And Output

    Appendix B RF Specifications Electrical Input and Output Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide B-10 OL-17309-01...

  • Page 143: Appendix

    60 percent braid second shield; nonbonded foil third shield; 40–42 percent braid fourth shield. Any of the three of the coaxial cables listed can be used to connect a Cisco cable interface line card to Note the HFC network;...

  • Page 144: Console And Auxiliary Port Cables And Pinouts

    Console and Auxiliary Port Cables and Pinouts If you use different types of coaxial cable, the following problems can appear: Damage to Cisco uBR7200 series cable interface line card connectors—Cable interface line card • connectors are designed for 59-series or 6-series cable and connectors. Larger cables can damage the connectors.

  • Page 145: Console Port Cables And Pinouts

    2 and 7, 3 and 6, 4 and 5, 5 and 4, 6 and 3, 7 and 2, 8 and 1). The wires of the straight-through cable are in the same sequence at both ends of the cable. If your cable was purchased from Cisco, pin 8 is white. Note...

  • Page 146: Auxiliary Port Cables And Pinouts

    • Use a Category 5 UTP straight-through cable when connecting to a PC or other Ethernet device. • Cisco does not supply Category 3 or Category 5 UTP RJ-45 cables; these cables are available Note commercially. Identifying an RJ-45 Crossover Cable You can identify a crossover cable by comparing the two modular ends of the cable.

  • Page 147: Identifying An Rj-45 Straight-Through Cable

    RJ-45 Straight-Through Cable Identification Pin 1 Pin 1 If your cable was purchased from Cisco, pin 1 is white. Pins 4, 5, 7, and 8 are not connected. Note Table C-3 lists the pinouts for the two Fast Ethernet ports.

  • Page 148: Fiber-Optic Cables And Connectors

    Class 1 laser product. Statement 1008 Warning Use a single-mode or multimode fiber-optic interface cable to connect your Cisco uBR7225VXR router to another router or switch. In general, multimode cables are gray or orange, and single-mode cables are yellow. For Ethernet and multimode fiber-optic connections, use one duplex SC-type connector (Figure C-5) or two simplex SC-type connectors.

  • Page 149: Appendix

    Some of these are included here for the benefit of cable operators that have or are deploying voice services on their cable networks. This appendix also includes standardized color codes for optical fiber. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 150: Tia/Eia Standards Information

    (groups of fibers or loose tubes) or ribbons on a given cable. As well, units and ribbons may be identified with printed markings. Table D-1 TIA/EIA–598 Color Code Position Color Blue Orange Green Brown Slate White Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 151: Telephone Wire Color Codes

    Solid Color Stripe Color Pin Number White Blue Blue White White Orange Orange White White Green Green White White Brown Brown White White Slate Slate White Blue Blue Orange Orange Green Green Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 152 Violet Violet Slate Slate Violet Cables with more than 25 pairs of wires are constructed from 25-pair groups. Very large cables have other variations generally not encountered inside terminal wire plants. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 153 Alternate Color Code Scheme for Smaller Numbers of Wires Pair Number Wire Number Solid Color Stripe Color Alternate Color Pin Number White Blue Green Blue White White Orange Black Orange White Yellow White Green White Green White Blue Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 154 Appendix D Industry-Standard Wiring Plans Telephone Wire Color Codes Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 155: Appendix

    E-1, Table E-2, and Table E-3 on page E-2 to compare analog television standards used around the world. Check these websites for more information: http://www.blondertongue.com http://www.geo-orbit.org http://www.acterna.com http://developer.apple.com http://www.c-cor.net http://www.qrf.com http://www.alkenmrs.com Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 156: Standards Comparisons

    1. This value applies to the combination N/PAL used in Argentina. Table E-3 Analog Television System RF Parameters B, B1, G D, D1, K Channel bandwidth at RF (MHz) B1, G=8 Frequency separation between 5.9996 visual and aural carrier (MHz) Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 157: Ntsc Cable Television Channels And Relative Frequencies

    157.25 159.0 161.75 157.2625 161.7625 156.0078 160.5078 162.0-168.0 163.25 165.0 167.75 163.2625 167.7625 162.0081 166.5081 168.0-174.0 169.25 171.0 173.75 169.2625 173.7625 168.0084 172.5084 174.0-180.0 175.25 177.0 179.75 175.2625 179.7625 174.0087 178.5087 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 158 367.25 369.0 371.75 367.2625 371.7625 366.0183 370.5183 372.0-378.0 373.25 375.0 377.75 373.2625 377.7625 372.0186 376.5186 378.0-384.0 379.25 381.0 383.75 379.2625 383.7625 378.0189 382.5189 384.0-390.0 385.25 387.0 389.75 385.2625 389.7625 384.0192 388.5192 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 159 577.25 579.0 581.75 577.2625 581.7625 576.0288 580.5288 582.0-588.0 583.25 585.0 587.75 583.2625 587.7625 582.0291 586.5291 588.0-594.0 589.25 591.0 593.75 589.2625 593.7625 588.0294 592.5294 594.0-600.0 595.25 597.0 599.75 595.2625 599.7625 594.0297 598.5297 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 160 787.25 789.0 791.75 787.2625 791.7625 786.0393 790.5393 792.0-798.0 793.25 795.0 797.75 793.2625 797.7625 792.0396 796.5396 798.0-804.0 799.25 801.0 803.75 799.2625 803.7625 798.0399 802.5399 804.0-810.0 805.25 807.0 809.75 805.2625 809.7625 804.0402 808.5402 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 161 993.0 995.75 991.2625 995.7625 990.0495 994.5495 996.0-1002.0 997.25 999.0 1001.75 997.2625 1001.7625 996.0498 1000.5498 1. This column is for historical channel listings. 2. Aeronautical channels visual carrier frequency tolerance +/–5 kHz. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 162: Ntsc (M) Cable Television Frequencies For Japan

    237.25 239.00 241.75 242.0-248.0 243.25 245.00 247.75 248.0-254.0 249.25 251.00 253.75 254.0-258.0 253.25 257.00 257.75 258.0-264.0 259.25 261.00 263.75 264.0-270.0 265.25 267.00 269.75 270.0-276.0 271.25 273.00 275.75 276.0-282.0 277.25 279.00 281.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 163 421.25 423.00 425.75 426.0-432.0 427.25 429.00 431.75 432.0-438.0 433.25 435.00 437.75 438.0-444.0 439.25 441.00 443.75 444.0-450.0 445.25 447.00 449.75 450.0-456.0 451.25 453.00 455.75 456.0-462.0 457.25 459.00 461.75 462.0-468.0 463.25 465.00 467.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 164: Pal/Secam Cable Television Channels And Relative Frequencies

    167.0-174.0 168.25 173.75 174.0-181.0 175.25 180.75 181.0-188.0 182.25 187.75 188.0-195.0 189.25 194.5 195.0-202.0 196.25 201.75 202.0-209.0 203.25 208.75 209.0-216.0 210.25 215.75 216.0-223.0 217.25 222.75 223.0-230.0 224.25 229.75 230.0-237.0 231.25 236.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide E-10 OL-17309-01...
  • Page 165 430.0-438.0 431.25 436.75 438.0-446.0 439.25 444.75 446.0-454.0 447.25 452.75 454.0-462.0 455.25 460.75 462.0-470.0 463.25 468.75 470.0-478.0 471.25 476.75 478.0-486.0 479.25 484.75 486.0-494.0 487.25 492.7‘5 494.0-502.0 495.25 500.75 502.0-510.0 503.25 508.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide E-11 OL-17309-01...
  • Page 166 710.0-718.0 711.25 716.75 718.0-726.0 719.25 724.75 726.0-734.0 727.25 732.75 734.0-742.0 735.25 740.75 742.0-750.0 743.25 748.75 750.0-758.0 751.25 756.75 758.0-766.0 759.25 764.75 766.0-774.0 767.25 772.75 774.0-782.0 775.25 780.75 782.0-790.0 783.25 788.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide E-12 OL-17309-01...
  • Page 167 (MHz) (MHz) (MHz) 790.0-798.0 791.25 796.75 798.0-806.0 799.25 804.75 806.0-814.0 807.25 812.75 814.0-822.0 815.25 820.75 822.0-830.0 823.25 828.75 830.0-838.0 831.25 836.75 838.0-846.0 839.25 844.75 846.0-854.0 847.25 852.75 854.0-862.0 855.25 860.75 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide E-13 OL-17309-01...
  • Page 168 Appendix E Frequency Allocation Tables PAL/SECAM Cable Television Channels and Relative Frequencies Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide E-14 OL-17309-01...

  • Page 169: Appendix

    TS2500, TS2700, TS3000 1. Asheridge Communications Limited is the European and Middle Eastern partner for White Sands Engineering and their URL is http://www.ashcatv.com 2. Formerly Hewlett-Packard Test and Measurement Division. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 170 2715 Sunrise Telecom http://www.sunrisetelecom.com AT2000R Vector Signal Analyzers Agilent http://www.agilent.com Agilent 89411A 1. Formerly Hewlett-Packard Test and Measurement Division. 2. Formerly Tektronics DMA division. 3. Formerly Hukk Engineering and Avantron. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 171: European Channel Plans

    White Sands Engineering, Inc. http://www.whitesandsengineering.com Coaxial jumpers 1 800-jumpers or 602 581-0331 GPS Receivers Agilent http://www.agilent.com Agilent 85960B, 85961B Symmetricom http://www.symmetricom.com TS2500, TS2700, TS3000 1. Formerly Hewlett-Packard Test and Measurement Division. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...
  • Page 172 2715 Sunrise Telecom http://www.sunrisetelecom.com AT2000R Vector Signal Analyzers Agilent http://www.agilent.com Agilent 89411A 1. Formerly Hewlett-Packard Test and Measurement Division. 2. Formerly Hukk Engineering and Avantron. 3. Formerly Tektronics DMA division. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 173: Appendix

    A P P E N D I X Site Log A site log provides a historical record of all actions relevant to the Cisco uBR7200 series universal broadband router operation and maintenance. Keep your site log in a common place near the chassis where anyone who performs tasks has access to it.
  • Page 174 Appendix G Site Log Table G-1 Site Log Date Description of Action Performed or Symptom Observed Initials Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide OL-17309-01...

  • Page 175: G L O S S A R Y

    (such as voice, video, or data) are conveyed in fixed-length (53-byte) cells. Fixed-length cells allow cell processing to occur in hardware, thereby reducing transit delays. ATM is designed to take advantage of high-speed transmission media such as E3, SONET, and T3. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide GL-1 OL-17309-01...
  • Page 176 Cable television. References to headend or distribution hub. CATV Common channel signaling. Circuit emulation service. The color portion of a video signal. Chrominance Cable modem termination system, such as the Cisco uBR7225VXR router. CMTS Carrier-to-noise ratio. C/N ratio Cisco Network Registrar. Customer premises equipment.
  • Page 177 Field-replaceable unit. A component that can be removed from a network device and replaced in the field. Line cards, power modules, and fan modules are typically FRUs. Global positioning system. Protocol that supports VoIP. H.323 VoIP network Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide GL-3 OL-17309-01...
  • Page 178 One of a group of alarm conditions that are considered the third most severe of all reportable alarms. Minor alarm Minor alarms affect a single or small number of subscribers who connect to the reporting node. You can use the show facility-alarm status Cisco IOS command to obtain more information about the problem. See also Critical alarm Major alarm.

  • Page 179: Online Insertion And Removal

    STS-1 is the basic building block of SONET. It was approved as an international standard in 1988. Static random-access memory. SRAM Set-top box. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide GL-5 OL-17309-01...
  • Page 180 A test point that is established by inserting a test signal of known amplitude into a fiber node and then X-level test point measuring the output level amplitude at the headend optical receiver. Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide GL-6 OL-17309-01...

  • Page 181: I N D E X

    2-17 site preparation 2-17 cable network configurations, overview Cisco Network Registrar 1-7, 2-12 cables Cisco Subscriber Registration Center AC power 1-13 Cisco uBR900 Category 3 or 5 UTP Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-1 OL-17309-01...
  • Page 182 1-11 DHCP server 2-12 fan failures digital data signals fan tray 1-2, 1-14, 1-15 digital signal level meter manufacturers F-2, F-4 Fast Ethernet Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-2 OL-17309-01...
  • Page 183 2-11 IP telephony overview headend configurations, overview ITU-T J.83 headend provisioning 2-10 headend provisioning, required network information hybrid fiber-coaxial (HFC) Japan, frequency allocations jewelry, avoiding for safety identifying startup problems Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-3 OL-17309-01...
  • Page 184 1-10 PCI bus upgradable memory modules 1-11 ping 4-25, 4-26, 4-27 noise pinouts C-3, C-4 amplified thermal power 3-19 electrical AC, site requirements funneling cord 1-13, 6-4 impulse cord safety Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-4 OL-17309-01...
  • Page 185 5-2, 5-6 signal level meter QAM analyzer manufacturers F-2, F-4 signal loss QPSK data points 4-32 site log QPSK demodulation mode 4-32 site preparation checklist 2-17 site requirements AC power Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-5 OL-17309-01...
  • Page 186 2-15, 3-1 VoIP 1-8, 2-13 telephone jacks VPN example temperature, internal chassis test points calibrating 4-21 HFC network 4-20 warning TFTP server 2-12 chassis lifting 3-11, 3-12 This Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-6 OL-17309-01...
  • Page 187 3-16 telecommunications lines TN power 3-17 weight wiring interference 2-14 optical color codes plant 2-14 telephone telephone color codes telephone station, terminal color codes X-level test points 4-20 zero-span 4-28 Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-7 OL-17309-01...
  • Page 188 Index Cisco uBR7225VXR Universal Broadband Router Hardware Installation Guide IN-8 OL-17309-01...

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