Cisco Systems uBR7246 manual List of Terms

Page 4

List of Terms

•Providing a universal platform for deployment of both current and future modem technologies via modular upgrades while protecting the operator’s invested capital.

•Leveraging Cisco’s industry-standard routing hardware and Cisco IOS software to deliver advanced network services and applications. The Cisco uBR7246 uses the same port adapters as the Cisco 7500 and Cisco 7200 series routers, and they are fully interchangeable. This adaptability and flexibility allows the operator to configure the network with any interface desired, including Ethernet, Fast Ethernet, FDDI, ATM, packet-over-SONET, and serial.

The Cisco uBR7246 cable modem cards are fully compatible with the Data Over Cable System Interface Specification (DOCSIS) established by major North American cable operators through the Multimedia Cable Network System (MCNS) consortium.

The Cisco uBR7246 supports both two-way and telephone return modems on a single downstream channel. The Cisco uBR7246 therefore allows both one-way and two-cable plants to provide cable modem service, and gives cable operators the flexibility to roll out service in systems that are only partially upgraded to two-way.

List of Terms

Community Antenna Television (CATV)—Broadband transmission facility.

Downstream—Frequency multiplexed band in a CATV channel that distributes signals from headend to users. In this instance, downstream refers to the data flow from the Cisco MC11 modem card in a Cisco uBR7246 to the user’s cable modem.

Headend—Originating point of a signal in a Cable TV system.

IF—Intermediate frequency. Intermediate electromagnetic frequencies generated by a superheterodyne radio receiver.

HFC—Hybrid fiber coaxial cable. Distribution cabling concept using both fiber optic and coaxial cable. Fiber is used for the backbone distribution medium, terminating in a remote unit where optoelectrical conversion takes place. The signal is then passed as data to coaxial cables that carry it to its destination.

QAM—Quadarture amplitude modulation. Modulation technique that allows data-encoded symbols to be represented in 16 or 32 different states.

QPSK—Quaternary phase shift keying. Compression technique used in modems and wireless networks, allowing the transmission of 2 bits per symbol. QPSK provides a 2:1 compression ratio, resulting in double efficiency for the circuit being used.

RF—Radio frequency. Group of electromagnetic energy whose wavelengths are between the audio and light range, usually between 500 KHz and 300 GHz.

Symbol—Phase range of a sine wave.

Upstream—Frequency multiplexed band in a CATV channel that distributes signals from transmitting stations to headend. In this instance, upstream refers to the data flow from a cable modem to the Cisco MC11 modem card in a Cisco uBR7246.

VC-136Voice, Video, and Home Applications Configuration Guide

Page 3 Page 5
Image 4
Page 3 Page 5
Contents Page Topology for uBR7246 Universal Broadband Description of Cisco uBR7246 Cable Router Benefits of Cisco uBR7246List of Terms Prerequisite Tasks Configure the Downstream Cable Interface Supported MIBs and RFCsCommand Purpose Set the Downstream Center FrequencySet the Downstream Symbol Rate Troubleshooting TipsSet the Downstream Mpeg Framing Format Annex a or Annex B Set the Downstream ModulationSet the Downstream Interleave Depth Step Command Purpose Activate the Downstream CarrierConfigure the Upstream Cable Interface Set the Upstream FrequencySet the Upstream Input Power Level Activate Upstream Forward Error Correction Router# more systemrunning-config Activate the Upstream ScramblerActivate the Upstream Ports Configure and Activate Baseline Privacy Configure Kek Encryption Key Privacy Configure Traffic Encryption Key PrivacyConfigure and Activate Frequency Agility Activate Baseline PrivacyCreate Spectrum Groups Activate IP Address Resolution Protocol Configure and Activate Spectrum GroupsActivate Address Resolution Protocol Requests Activate Host-to-Host Communication Proxy ARPSet Optional IP Parameters Activate Proxy ARP RequestsActivate IP Multicast Echo Activate IP Broadcast EchoActivate Cable Modem Authentication Manage Cable Modems on the HFC NetworkActivate Cable Modem Upstream Address Verification Command Task Activate Cable Modem Insertion IntervalUniversal Broadband Features Configuration Example Enter the global configuration mode. configure terminal

uBR7246 specifications

The Cisco uBR7246 is a versatile edge router designed primarily for cable operators wishing to deliver high-speed Internet, telephony, and video services over hybrid fiber-coaxial (HFC) networks. This router is part of Cisco's extensive line of broadband access solutions, addressing the increasing demand for bandwidth among consumers and businesses alike.

One of the uBR7246's main features is its ability to support a wide range of broadband technologies including DOCSIS (Data Over Cable Service Interface Specification) and EuroDOCSIS. The router is designed to facilitate the delivery of high-speed data services while allowing for flexible configurations that adapt to evolving network technologies. This is crucial for operators looking to maximize their network efficiency and future-proof their infrastructure.

The uBR7246 is equipped with multiple modular slots, enabling service providers to customize the router according to their specific needs. High-capacity interface cards can be added to support various types of connections, such as Ethernet and TDM (Time Division Multiplexing), thus offering scalability. With support for both DOCSIS 1.0 and advanced versions like DOCSIS 3.0 and 3.1, the router can handle increased data rates and offer maximum efficiency in terms of bandwidth utilization.

Security features are integral to the uBR7246, as it employs advanced measures such as encryption and robust authentication protocols to ensure that subscriber data remains secure. This is particularly vital in an era where cyber threats are pervasive, and customer trust is essential.

In terms of performance, the uBR7246 offers exceptional throughput, capable of efficiently managing vast amounts of traffic without degradation of service. Advanced Quality of Service (QoS) mechanisms help prioritize traffic, ensuring that high-demand applications like video streaming and VoIP receive the necessary bandwidth they require for optimal performance.

The router is also designed with operational ease in mind, offering centralized management capabilities through Cisco's suite of management tools. This allows operators to monitor performance, manage configurations, and troubleshoot issues more efficiently, reducing downtime and enhancing service reliability.

In summary, the Cisco uBR7246 is a powerful and flexible solution that meets the demands of modern broadband delivery. Its advanced technologies, modular design, high-level security features, and robust performance make it an ideal choice for cable operators aiming to provide high-quality services to their subscribers while staying ahead of the competition.
Top Page Image Contents