| Term |
Description |
| FCC |
| Federal Communications Commision, the US federal regulatory agency responsible for regulating interstate and international communications. |
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| FDDI |
| FDDI (Fiber Distributed Data Interface) is a high-speed data transmission protocol over fiber optic lines. FDDI is based on the token ring protocol and frequently used on backbones for a WAN (wide area network) due to its speed and reliability. |
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| FDM |
FDM (Frequency Division Multiplexing) refers to the multiplexing technique that uses different frequencies to combine multiple streams of data for transmission over a communications medium. FDM uses a different frequency to each data stream. For example, cable television uses FDM to broadcast a number of channels in the same transmission.
See also: WDM, TDM. |
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| FEXT |
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| FHSS |
FHSS (frequency-hopping spread spectrum) is a modulation technology used in wireless netwok transmissions. It also is known as frequency-hopping code division multiple access (FH-CDMA).
In FHSS, the data signal "hops" between available frequencies several times per second, according to a specified algorighm. The transmission is synchronized between the sender and the receiver.
Benefits include improved privacy, decreased narrowband interference, and increased signal capacity.
See also: DSSS |
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| FIPS |
FIPS (Federal Information Processing Standard) refers to US Government technical standards published by the NIST (National Institute of Standards and Technology).
NIST develops FIPS when there are compelling Federal government requirements such as for security and interoperability but no acceptable industry standards or solutions. Computer-related products bought by the US Government must conform to FIPS. |
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| Firewall |
| Firewall is a system designed to prevent unauthorized acess to or from an internal private network. Firewalls can be implemented in hardware, software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet. All traffic entering or leaving the private network (or a particular PC) passes through the firewall, which examines and blocks traffic that does not meet some specified security criteria. Firewalls are a vital part of securing a system/network. |
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| Firmware |
| firmware refers to the programming that runs the device, oftern loaded into programmable read-only memory (PROM). |
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| FITL |
| FITL (Fiber in the Loop) - used by the telephone industry to describe the deployment of fiber on the subscriber side of class 5 telephone switches. |
|
| framework |
| Framework defines the technological basis, or the underlying structure supporting or containing something. |
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| FTF |
| FTF (Fiber to the Feeder) is a term typically used to describe CATV Fiber to the Node (FTTN) networks. Coaxial cables are normally used for the terminal network segment (from the node to the end-user). |
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| FTP |
FTP (File Transfer Protocol) is a standard client/server protocol used for transfering files that operates over TCP/IP networks (such as the Internet).
An FTP server accepts commands from systems running FTP client software that allows them to download/upload files from the server. FTP is popular on the Internet because it allows for fast transfer of large files, as well as some advanced features, such as resuming interrupted uploads/downloads. |
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| FTTC |
| FTTC (Fiber To The Curb) refers to the installation of optical fiber from a telephone switch to within 1,000 feet of a home or enterprise. An optical to electrical (O/E) conversion takes place somewhere near the end-user. The terminal network segment of a FTTC network is usually twisted copper pairs or coaxial cable. The final optical receiver in a FTTC network typically serves several customers. |
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| FTTH |
| FTTH (Fiber To The Home) - the installation of optical fiber from a telephone switch directly into the subscriber’s home. |
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| FTTN |
| FTTN (Fiber to the Node) refers to an access network in which fiber is used for part, but not all of the link from the OLT to the end-user. An optical to electrical (O/E) conversion takes place at an active device called a Node. This Node typically serves a neighborhood or geographically similar area, which is larger than the typical service area in an FTTC deployment. The terminal network segment is usually twisted copper pairs or coaxial cable. Most current CATV and Telephony networks have FTTN architectures. |
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| FTTP |
| FTTP (Fiber to the Premises)- refers to a telecommunications system, replacing the last mile of copper to homes/businesses with fiber optic cables for delivery of broadband service. Same as FTTH (Fiber to the Home). |
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| FWIW |
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| Term |
Description |
Glossary