Digital telecommunications protocol for voice, video, and data
This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages)
This article includes a list of general references, but it lacks sufficient corresponding inline citations. Please help to improve this article by introducing more precise citations.(April 2009) (Learn how and when to remove this message)
This article's tone or style may not reflect the encyclopedic tone used on Wikipedia. See Wikipedia's guide to writing better articles for suggestions.(October 2012) (Learn how and when to remove this message)
(Learn how and when to remove this message)
IBM Turboways ATM 155 PCI network interface card
Asynchronous Transfer Mode (ATM) is a telecommunications standard defined by the American National Standards Institute and ITU-T (formerly CCITT) for digital transmission of multiple types of traffic. ATM was developed to meet the needs of the Broadband Integrated Services Digital Network as defined in the late 1980s,[1] and designed to integrate telecommunication networks. It can handle both traditional high-throughput data traffic and real-time, low-latency content such as telephony (voice) and video.[2][3] ATM provides functionality that uses features of circuit switching and packet switching networks by using asynchronous time-division multiplexing.[4][5] ATM was seen in the 1990s as a competitor to Ethernet and networks carrying IP traffic as it was faster and was designed with quality-of-service in mind, but it fell out of favor once Ethernet reached speeds of 1 gigabits per second.[6]
In the OSI reference model data link layer (layer 2), the basic transfer units are called frames. In ATM these frames are of a fixed length (53 octets) called cells. This differs from approaches such as Internet Protocol (IP) (OSI layer 3) or Ethernet (also layer 2) that use variable-sized packets or frames. ATM uses a connection-oriented model in which a virtual circuit must be established between two endpoints before the data exchange begins.[5] These virtual circuits may be either permanent (dedicated connections that are usually preconfigured by the service provider), or switched (set up on a per-call basis using signaling and disconnected when the call is terminated).
The ATM network reference model approximately maps to the three lowest layers of the OSI model: physical layer, data link layer, and network layer.[7] ATM is a core protocol used in the synchronous optical networking and synchronous digital hierarchy (SONET/SDH) backbone of the public switched telephone network and in the Integrated Services Digital Network (ISDN) but has largely been superseded in favor of next-generation networks based on IP technology. Wireless and mobile ATM never established a significant foothold.
^Cite error: The named reference bisdn was invoked but never defined (see the help page).
^Telcordia Technologies, Telcordia Notes on the Network, Publication SR-2275 (October 2000)
^ATM Forum, The User Network Interface (UNI), v. 3.1, ISBN 0-13-393828-X, Prentice Hall PTR, 1995, page 2.
^"Recommendation I.150, B-ISDN Asynchronous Transfer Mode functional characteristics". ITU.
^McDysan, David E. and Spohn, Darrel L., ATM : Theory and Application, ISBN 0-07-060362-6, McGraw-Hill series on computer communications, 1995, page 563.
and 26 Related for: Asynchronous Transfer Mode information
AsynchronousTransferMode (ATM) is a telecommunications standard defined by the American National Standards Institute and ITU-T (formerly CCITT) for digital...
was the obvious choice for transporting AsynchronousTransferMode (ATM) frames. AsynchronousTransferMode (ATM) is a switching technique for telecommunication...
generations of PON. The older ITU-T G.983 standard was based on AsynchronousTransferMode (ATM), and has therefore been referred to as APON (ATM PON). Further...
different kinds of traffic, including IP packets, as well as native AsynchronousTransferMode (ATM), Frame Relay, Synchronous Optical Networking (SONET) or...
multiplexing, for example Asynchronous Transfer Mode (ATM). In this case, the asynchronouslytransferred blocks are called data packets, for example ATM...
Network (B-ISDN) was planned to provide these characteristics. AsynchronousTransferMode (ATM) was promoted as a target technology for meeting these requirements...
access network or an access network using bridged Ethernet over AsynchronousTransferMode (ATM) without using PPPoE. It directly encapsulates the IP datagrams...
data-link-layer technologies using FIBs include Frame Relay, AsynchronousTransferMode (ATM) and Multiprotocol Label Switching (MPLS). The role of an...
for transporting AES3 professional digital audio streams over AsynchronousTransferMode (ATM) networks. The Audio Engineering Society (AES) published...
Wikipedia. AsynchronousTransferMode, a method of digital communication Block cipher mode of operation, in cryptography The Devil's Mode, a collection...
Packet (PUP) using IEEE 802 standards, FDDI, X.25, Frame Relay and AsynchronousTransferMode (ATM). In Internet Protocol Version 6 (IPv6) networks, the functionality...
addressing and switching such as Ethernet multicast addressing, AsynchronousTransferMode (ATM), point-to-multipoint virtual circuits (P2MP) or InfiniBand...
but many of the concepts available in ST are similar to later AsynchronousTransferMode protocols and can be found in Multiprotocol Label Switching (MPLS)...
be perfect. The service being carried over the "wire" may be AsynchronousTransferMode (ATM), Frame Relay, Ethernet or time-division multiplexing (TDM)...
Internet service and wide area network connectivity via Frame Relay, AsynchronousTransferMode, or dedicated point-to-point telecommunication circuits. Deltacom...
use of AsynchronousTransferMode (ATM) technology and services creates the need for an adaptation layer in order to support information transfer protocols...
scheduling algorithm for the network scheduler that is used in AsynchronousTransferMode (ATM) networks. It is used to measure the timing of cells on virtual...
also exist for other types of networks including Fibre Channel, AsynchronousTransferMode, and InfiniBand. Unlike repeater hubs, which broadcast the same...
was founded in 1991 to be the industry consortium to promote AsynchronousTransferMode technology used in telecommunication networks; the founding president...
frames of the Synchronous Digital Hierarchy (SDH) AsynchronousTransferMode (ATM) Packet TransferMode (starting with ADSL2, see below) In home installation...
across many modern optical fibre networks is a protocol known as AsynchronousTransferMode (ATM). The ATM protocol allows for the side-by-side data transmission...
a model of computation used in theoretical computer science AsynchronousTransferMode, a telecommunications protocol used in networking ATM adaptation...
technology for B-ISDN was AsynchronousTransferMode (ATM), which was intended to carry both synchronous voice and asynchronous data services on the same...
used in connection-oriented networks such as X.25, Frame Relay, AsynchronousTransferMode and Multiprotocol Label Switching. Source routing allows easier...
IEEE 802.5 Token Ring Fiber Distributed Data Interface (FDDI) AsynchronousTransferMode (ATM), switched virtual connections only, as part of an NSAP address...
limitation to telephony equipment like T-carrier, E-carrier or AsynchronousTransferMode (ATM), which highly improves scalability of the signaling networks...
Global Information
