Motorola SVG2500 manual Cmts, Cnr, Cpe, Csma/Cd

17 GLOSSARY
TERM	DEFINITION
circuit-switched	Network connection scheme used in the traditional PSTN
	telephone network, where each connection requires a
	dedicated path for its duration. An alternative is packet-switched.
Class C	An IP network containing up to 253 hosts. Class C IP addresses
network	are in the form “network.network. network. host.”
client	In a client/server architecture, a client is a computer that
	requests files or services, such as file transfer, remote login, or
	printing from the server. Also called a CPE.
	On a WLAN, a client is any host that can communicate with
	the access point. A wireless client is also called a “station.”
CMTS	A cable modem termination system is a device in the cable
	system headend that interfaces the HFC network to local or
	remote IP networks to connecting IP hosts, cable modems or
	gateways, and subscribers. It manages all cable modem
	bandwidth. It is sometimes called an edge router.
CNR	carrier to noise ratio
coaxial cable	A type of cable consisting of a center wire surrounded by
	insulation and a grounded shield of braided (coax) wire. The
	shield minimizes electrical and radio frequency interference.
	Coaxial cable has high bandwidth and can support transmission
	over long distances.
CoS	Class of service traffic management or scheduling functions are
	performed when transferring data upstream or downstream on
	HFC.
CPE	Customer premise equipment, typically computers,
	printers, etc., are connected to the cable modem or
	gateway at the subscriber’s location. CPE can be provided by
	the subscriber or the Internet Service provider. Also called a
	client.
crosstalk	An undesired signal interfering with the desired signal.
CSMA/CD	Carrier sense multiple access with collision detection

D

TERM	DEFINITION
datagram	In RFC 1594, a datagram is defined as “a self-contained,
	independent entity of data carrying sufficient information to be
	routed from the source to the destination computer without
	reliance on earlier exchanges between this source and
	destination computer and the transporting network.” For the
	most part, it has been replaced by the term packet.
	140