Glossary Section "F" ( Definitions )
Guide - Select
first letter of word:
0-9 A B C D
E F G H I
J K L M N
O P Q R S
T U V W X
is a common type
of connector used on both multi-mode and single-mode fiber optic
cable. To connect you insert the tip and screw on the outer threaded collar.
(picture of FC connector)
FDM Frequency Division
FDV Frame Delay Variation
FEBE Far End Block Errors
FERC Federal Energy
Regulatory Commission regulates and monitors the electric, hydropower, natural gas and oil industries.
For more information visit their website at: https://www.ferc.gov/
FRR Fast Re-Route
Firewalls are be a combination of hardware and software designed to prevent unauthorized access to the local LAN. In many cases
they filter messages containing unwanted content.
four-wire circuits Telephone
lines using two wires for transmitting and two wires for receiving offering much higher
quality than a 2-wire circuit. All long distance circuits are 4-wire. Almost all local
phone lines and analog phones are 2-wire.
FQDN Fully Qualified Domain
Name The FQDN is the full name of a system, rather than just its host-name. For example,
"central" is a hostname and "central.room1.com" is an FQDN.
Frame Relay is a packet-switching protocol that provides
features like that of a dedicated DDS or T1 network, but without the expense of multiple dedicated circuits. Frame Relay is deployed over the same services used to deploy DDS and T1. Frame Relay circuits are connected to a packet switch within the network that ensures packets are routed to the correct location. Frame Relay is an ideal, cost-effective solution for networks with bursty traffic that require connections to multiple locations and where a certain degree of delay is acceptable.
FRAP Frame Relay Access
Probes help benchmark the performance of frame relay networks.
FSK Frequency Shift-Key
FSO Free-Space Optics is a point-to-point technology that transmits laser beams over the air to provide a very high-speed communications link. FSO requires line-of-sight between two transceivers to transmit voice, video, and data on beams of light at speeds up to 2.5 Gbps. Another name for Free Space Optics is �Optical-Wireless�.
FTAM File Transfer, Access,
and Management. The OSI remote file service and protocol.
FTTH Fiber to the home
FTTN Fiber to the node
FTP file Transfer Protocol.
The Internet protocol (and program) used to transfer files between hosts.
Full Duplex Data flows in both
directions at the same time.
FX Foreign Exchange
provides service from the customer's station to a Central Office other than the
one which would normally serve that station.
FXO Foreign Exchange
Office. This is the office end of an FX circuit (frequently a PBX).
FXS Foreign Exchange
Station. The station (telephone) end of an FX circuit.
An FXS port will provide dial tone and ring voltage.
guide] [home page] [specials]
[suggest new words for