Cisco uBR904 Cable Modem

The Cisco uBR904 cable modem is a part of a new class of Cisco data-over-cable products. The Cisco uBR904 cable modem is also referred to as a subscriber unit, a key component within a cable data system. This subscriber unit functions as an interface between the subscriber's personal computer and the cable operator's network within the subscriber's small office or home office.

The Cisco uBR904 cable modem is a compact, easy-to-install device that can receive and transmit digital data over hybrid fiber coaxial (HFC) cable; the same cable that brings television broadcast transmissions into a cable television (CATV) subscriber's home. With a Cisco uBR904 cable modem, a personal computer can be connected to the HFC cable network for high-speed access to the Internet. The link that enables the transmission of two-way digital data from the HFC network to the Internet is provided by a coaxial cable for the WAN interface connected to the Cisco uBR904 WAN interface.

The Cisco uBR904 cable modem is based on the Multimedia Cable Network System (MCNS) Partners, Ltd. Data-Over-Cable Service Interface Specification (DOSCIS) standards-based specifications. MCNS is a consortium of cable television companies whose goal is to create standards for interoperable data-over-cable systems.