Glossary
GL-15
Cisco 6260 Hardware Installation Guide
OL-2365-02
FCC
Federal Communications Commission. A U.S. government agency that regulates interstate and
foreign communications. The FCC sets rates for communication services, determines standards for
equipment, and controls broadcast licensing.
Federal
Communications
Commission
See
FCC
.
ferrite
Use on coaxial cables to reduce the radiation/EMI susceptibility to high frequency noise.
field replaceable
unit
See
FRU
.
File Transfer
Protocol
See
FTP.
firmware
Software instructions set permanently or semi-permanently in ROM.
flash memory
A special type of EPROM that can be used and reprogrammed in blocks instead of one byte at a time.
FM
frequency modulation. Modulation technique in which signals of different frequencies represent
different data values. Compare with
AM
and
PAM
. See also
modulation
.
frame
A packet as it is transmitted over a serial line. The term derives from character-oriented protocols that
involved the addition of special start-of-frame and end-of-frame characters for packet transmission.
frequency
modulation
See
FM
.
FRU
field replaceable unit. Hardware component that can be removed and replaced on-site. Typical FRUs
include cards, modules, PEMs, and some chassis components. When FRUs are removed from the
chassis, service is interrupted for some or all of the system.
FTP
File Transfer Protocol. The application protocol used to transfer files between network nodes.
G
G.992.1
Also known as
G.dmt
.
G.992.2
The ITU standard for line coding and framing for splitterless, reduced spectrum ADSL. Also known
as
G.lite
.
G.994.1
The ITU standard for signaling, identification, and negotiation between broadband systems; an
integral part of G.dmt and G.lite. Also known as
G.hs
.
G.997.1
The ITU standard for performance monitoring on DMT access technologies.
G.dmt
Pseudonym for G.992.1.
G.hs
Pseudonym for G.994.1.
G.lite
Pseudonym for G.992.2.