Ericsson HM200c/HM201c manual Docsis, Hfc

DOCSIS	DOCSIS (Data Over Cable Service Interface
	Specification) defines the interface requirements for cable
	modems providing data distribution over a cable
	television network. DOCSIS ensures that a network will
	work properly when DOCSIS modems made by different
	vendors are connected to it.
Download	The passing of data from the Headend to the computer.
Downstream	The direction of a downstream signal is from the headend
	to the user’s computer.
Drop Cable	Drop cables connect the feeder cables to customers’
	homes.
Duplex Tuner	A tuner that processes both upstream and downstream
	signals.
Encryption	The scrambling of a signal by means of an algorithm, to
	prevent unauthorized monitoring of the message.
Ethernet	A network technology that uses a bus topology in which
	all computers on the Ethernet attach to a single cable.
Ethernet Card	A plug-in circuit board installed in an expansion slot of
	the computer. The Ethernet card (also called a Network
	Interface Card, or NIC) takes parallel data from the
	computer, converts it to serial data, packets it, and sends
	it out over a 10BaseT cable.
Euro-DOCSIS	Euro-DOCSIS (European Data Over Cable Service
	Interface Specification) defines the interface
	requirements for cable modems providing data
	distribution over a cable television network. Euro-DOCSIS
	ensures that a network will work properly when
	Euro-DOCSIS modems made by different vendors are
	connected to it.
Feeder Cable	The feeder cables are branches off the main trunk cable.
	Feeder cables lead out into different geographic areas
	serviced by the provider.
Headend	The equipment located in the central office of the service
	provider. The headend connects the cable network to
	external data networks.
HFC	See Hybrid Fiber/Coax
Hybrid	A cable system where the cables closest to the Headend
Fibre/Coax	are fibre technology, and the cables dropped into
	individual homes are coaxial. Between these two ends,
	the signal is converted from fibre to coaxial.
Hub	A device used to connect multiple computers to the cable
	modem, using Ethernet technology.
Initialization	The steps a device goes through prior to beginning
	normal operations.
Internet	A global collection of interconnected networks used for
	worldwide computer-based communications.
Internet Protocol	Internet Protocol (IP) is a standard that defines the
	format of packets of information sent over the Internet
	and the mechanism for routing each packet to its
	destination. IP is the network portion of TCP/IP.
Internet Service	An Internet Service Provider (ISP) is a commercial
Provider	organization that provides access to the Internet for its
	subscribers.