The Cisco uBR904 cable modem is a fully functional Cisco IOS universal broadband router and an integral Data-over-Cable Service Interface Specification (DOCSIS) cable modem designed for use in the small office / home office (SOHO). It is a compact device that has the familiar features and programming interface of other routers in the extensive line of small and medium-sized business product offerings from Cisco. It provides packet data transport for TCP / IP applications between home or office computers and the cable head end.The Cisco uBR904 has a single-cable, F-connector interface for connection to the hybrid fiber coaxial (HFC) system and a built-in Ethernet 10BaseT hub, providing four RJ-45 ports to which subscriber devices can be connected. All four ports are treated as one Ethernet interface by Cisco IOS software. More hosts can be connected to the Cisco uBR904 by connecting one of the 10BaseT ports to a hub. Additionally, the Cisco uBR904 has an RJ-45 console interface for configuration and diagnostic purposes. The cable interface requires no configuration or setup procedures other than connecting the unit to the cable system. Ethernet interface configuration is provided through a command-line interface (CLI) parser, which can be reached either through the console port or via Telnet to the Cisco uBR904 Ethernet port. Console and TTY sessions are supported. In addition to the CLI configuration interface, modifications will be made to the PC ClickStart configuration utility to support Cisco uBR904 configuration. The console CLI can also be disabled and the configuration is then controlled solely from a downloaded file.