Cambridge SoundWorks P460 manual Fcs, Fddi, Fdx, Ftp, Hdx

Glossary

FCS

Frame Check Sequence. A field added to a frame for error-control purposes.

FDDI

Fiber Distributed Data Interface. A set of ANSI protocols for sending digital data over fiber optic cable. FDDI networks are token-passing networks, and support data rates of up to 100 Mbps. FDDI networks are typically used as backbones for wide- area networks.

FDX

Full Duplex. A circuit or device permitting simultaneous data transmission between sending and receiving stations. For more information, refer to Duplex Mode on page 199.

Flow Control

Avaya’s devices use a proprietary form of flow control that enables one endpoint to inform another endpoint that it should refrain from sending additional packets. The flow control mechanism avoids packet loss. Flow control is used in Full Duplex Mode.

Fragment

Ethernet packet shorter than 576 bits (usually the result of a collision).

Frame

A logical grouping of information sent as a Data Link Layer unit over a transmission medium. The word Frame often refers to the header and trailer, used for synchronization and error control, that surround the user data contained in the unit.

FTP

File Transfer Protocol. An application protocol, part of the TCP/IP protocol stack, used for transferring files between network nodes.

Full Duplex (FDX)

A circuit or device permitting simultaneous data transmission between sending and receiving stations. Duplex Mode on page 199.

Half Duplex (HDX)

A circuit or device permitting data transmission in only one direction at a time between sending and receiving stations. For more information, refer to Duplex Mode on page 199.

HDX

Half Duplex. A circuit or device permitting data transmission in only one direction

200 Avaya P460 Reference Guide