Specifications

Feature Summary
2
Cisco IOS Release 12.0(3)T
Figure 1 Cisco uBR904 in a Bridging Configuration
Figure 2 Cisco uBR904 in a Routing Configuration with a Hub
Benefits
The Cisco uBR904 cable modem provides the following benefits for data-over-cable applications:
• Enables the cost-effective deployment of advanced routing capabilities to the small office or
home office site
• Provides a universal platform for deployment of both current and future modem technologies via
modular upgrades while protecting the operator’s invested capital
• Leverages Cisco’s industry-standard routing hardware and Cisco IOS software to deliver
advanced network services and applications
List of Terms
CATV—Originally stood for Community Antenna Television. Now refers to any coaxial or fiber
cable-based system that provides television services.
Cable modem (CM)—Any device that modulates and demodulates digital data onto a CATV plant.
Cable router—A modular chassis-based router optimized for data-over-CATV hybrid fiber-coaxial
(HFC) applications.
Channel—A specific frequency allocation and bandwidth. Downstream channels used for television
in the United States are 6 MHz wide.
CM—Cable modem.
CMTS—Cable Modem Termination System. Any DOCSIS-compliant headend cable router, such
as the Cisco uBR7246.
Cisco uBR7200 series
CMTS
CATV
coaxial cable
HFC network
Cisco uBR900 series
cable access router
Ethernet
13305
Ethernet
Ethernet
Ethernet
PC
PC
PC or hub
PC
CATV
coaxial cable
Cable
Modem
Ethernet Ethernet
HUB
LAN
13306
Cisco uBR7246
CMTS
HFC network