Cables to Go DOCSIS Cable Modem - Manual (Page 30)

DOCSIS 1.0/ 1.1 Equivalent Cable Modem
Headend
The aggregation point in a CATV plant where control equipment is located. The
CMTS resides here, as does video broadcast and monitoring equipment.
HFC (Hybrid Fibre/Coax)
A cable system where the cables closest to the Headend are fiber technology, and the
cables dropped into individual homes are coaxial. Between these two ends, the signal
is converted from fiber to coaxial. The coaxial cable then runs through the branches of
the network and is finally dropped into the home.
Hub
Electronic device that accepts data from a sending computer and delivers it to the
appropriate destination. Many networks are shaped like a wheel with different
computers attached at the ends of the wheel’s spokes; the hub is the center of the wheel
ICMP
Part of the TCP/IP protocol used for network diagnosis.
IEEE 802.3
IEEE is the Institute for Electrical and Electronic Engineers. 802.3 refers to the
specifications of the Ethernet protocol.
ISP
Internet Service Provider. A commercial organization that provides access to the
Internet for its subscribers
IP
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, the most commonly used protocol suite for the Internet.
IP Address
A unique, 32-bit address assigned to every device in a network. An IP address is
composed of a network address and a host address. Each network is assigned an
address by a government agency, and each company administrator assigns an address
to each host computer.
Latenacy/(Lag)
Excessive response time. Time between sending a request to a server (e.g. web page)
and receiving the response.
LED
Light-Emitting Diode. A semiconductor device that emits light when voltage is applied
between its terminals. LEDs are used on the cable modems as front panel lights.
MAC Address
The physical address of the Media Access Control device.
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