Cell relay

Cell relay

In telecommunications, cell relay refers to a method of statistically multiplexing fixed-length packets, i.e. cells, to transport data between computers or kinds of network equipment. It is an unreliable, connection-oriented packet switched data communications protocol.

Cell relay transmission rates usually are between 56 kbit/s and several gigabits per second. ATM, a particularly popular form of cell relay, is most commonly used for home DSL connections, which often runs between 128 kbit/s and 1.544 Mbit/s (DS1), and for high-speed backbone connections (OC-3 and faster).

Cell relay protocols have neither flow control nor error correction capability, are information-content independent, and correspond only to layers one and two of the OSI Reference Model.

Cell relay systems enclose variable-length user packets in fixed-length packets, i.e. cells, that add addressing and verification information. Frame length is fixed in hardware, based on time delay and user packet-length considerations. One user data message may be segmented over many cells.

Cell relay is an implementation of fast packet-switching technology that is used in connection-oriented broadband integrated services digital networks (B-ISDN, and its better-known supporting technology ATM) and connectionless IEEE 802.6 switched multi-megabit data service (SMDS).

Cell relay is used for time-sensitive traffic such as voice and video.

References

* Federal Standard 1037C


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • cell relay —    A form of packet transmission used in Broadcast Integrated Services Digital Network (B ISDN) networks that uses a fixed length, 53 byte cell over a packetswitched network. Also known as Asynchronous Transfer Mode (ATM) …   Dictionary of networking

  • Cell Relay — Paketschalttechnik mit Paketen fester Länge, s. ATM …   Acronyms

  • Cell Relay — Paketschalttechnik mit Paketen fester Länge, s. ATM …   Acronyms von A bis Z

  • cell relay —    Technology based on small, fixed size electronic packets or cells; because the cells are fixed they can be processed and switched at very high speeds; it is the basis of many high speed technologies, such as SMDS and ATM …   IT glossary of terms, acronyms and abbreviations

  • протокол MicroBand ATM Cell Relay — Сетевой протокол компании MICOM, позволяющий организовать сетевые магистрали для одновременной передачи голоса, факсов, трафика ЛВС и унаследованных данных по выделенным линиям. Каждый пакет имеет одинаковую длину в отличие от V.21 и frame relay …   Справочник технического переводчика

  • Cell — Cell(s) may refer to:In science: * Cell (biology), the basic organizational unit of all living organisms * Cell (journal), a scientific journal * Cell (geometry), a three dimensional element that is part of a higher dimensional object. * Storm… …   Wikipedia

  • Tom Clancy's Splinter Cell (video game) — Tom Clancy s Splinter Cell North American cover art Developer(s) Ubisoft Montreal (Xbox, Microsoft Windows, Game Boy Advance Macintosh) Ubisoft Shanghai (PlayStation 2 Nintendo GameCube) Gameloft …   Wikipedia

  • Mauthner cell — The Mauthner Cells are a pair of big and easily identifiable neurons (one for each half of the body) located in the rhombomere 4 of the hindbrain in fish and amphibians that are responsible for a very fast escape reflex (in the majority of… …   Wikipedia

  • photoelectric cell — Electronics. photocell. [1890 95] * * * ▪ electronics also called  Electric Eye, Photocell, or Phototube,         an electron tube with a photosensitive cathode that emits electrons when illuminated and an anode for collecting the emitted… …   Universalium

  • Packet switching — is a digital networking communications method that groups all transmitted data – regardless of content, type, or structure – into suitably sized blocks, called packets. Packet switching features delivery of variable bit rate data streams… …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”