automatic teller machine


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automatic teller machine

[¦ȯd·ə¦mad·ik ′tel·ər mə‚shēn]
(computer science)
A banking terminal that is activated by inserting a magnetic card containing the user's account number, and that accepts deposits, dispenses cash, provides information about current balances, and may perform other services such as making payments and transfers and providing account statements. Abbreviated ATM.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

ATM

(1) See also ATM machine and Adobe Type Manager.

(2) (ATMosphere) A measure of pressure. See atmosphere.

(3) "At the moment." See digispeak.

(4) (Asynchronous Transfer Mode) A local area and wide area network technology stemming from the telephone world that supports quality of service (QoS) for real-time voice and video. In the early 1990s, ATM was touted as the future multimedia transport starting at the desktop. A decade later, ATM was being replaced by Internet protocols (see IP and MPLS). Adapters for PCs were expensive, and standards for connecting legacy networks were confusing. When Gigabit Ethernet debuted at the end of the 1990s with a familiar technology and 10-fold speed increase, ATM's demise as a LAN was assured. However, ATM was deployed as a backbone technology in major telcos and ISPs.

Fixed-Size Cells and Logical Circuits
ATM transmits 53-byte cells that can be processed very quickly, and the small cell ensures that voice and video can be inserted into the stream for real-time transmission. ATM uses switches that establish a logical circuit from end to end. However, unlike the dedicated circuits of legacy telephone switches, unused bandwidth in ATM's circuits can be appropriated as needed. For example, idle bandwidth in a videoconference can be used to transfer data.

Five Service Levels
Constant Bit Rate (CBR) guarantees bandwidth. Real-time Variable Bit Rate (rt-VBR) supports multimedia, and non-real-time Variable Bit Rate (nrt-VBR) is used for bursty traffic. Available Bit Rate (ABR) adjusts bandwidth according to LAN congestion levels, and Unspecified Bit Rate (UBR) provides the best effort for non-critical data. See MPOA.


ATM in the Large Enterprise
ATM was used as a network backbone ("switch fabric") in some large enterprises. The edge device is an Ethernet switch, and the LANE (LAN Emulation) driver converts Ethernet frames into ATM cells. See LANE.







ATM in the Internet
ATM has been used by carriers and ISPs as the backbone between points of presence (POPs) and at interconnecting points (see NAP and MAE). Highly scalable, ATM supports transmission speeds up to 10 Gbps but can run as slow as 9.6 Kbps between ships at sea. When a new ATM switch is added, it is automatically updated using ATM's PNNI routing protocol.







Where ATM Fits In
ATM functions at layer 2 of the OSI model and converts its cells into SONET frames (see OC) or T-carrier frames (see DS).
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References in periodicals archive ?
Loomis will also count cash and provide certain emergency servicing of the automatic teller machines (ATMs).
Riyadh, Shawwal 15, 1432, Sep 13, 2011, SPA - The number of ATMs (Automatic Teller Machines) in the Kingdom of Saudi Arabia installed through Saudi Span and Banks increased to 11,387 by the end of July, 2011 as compared to 11,300 in June (this year), according to the latest statistical report of Saudi Arabian Monetary Agency (SAMA).
Kuala Lumpur, Aug.17 (ANI): The Malaysian Government has said that it wants the Tamil language to figure in all automatic teller machines (ATMs).
TOKYO - The Japanese government is considering punishing Mizuho Bank over its recent computer system glitches that forced all its automatic teller machines to be suspended for days, sources close to the matter said Tuesday.
He also helped invent and introduced the first nationally accepted debit card and introduced the group of automatic teller machines that evolved into the present day ATM.
Seven Bank, which operates the nation's largest network of convenience store-based automatic teller machines, said it will offer 53,350 of its existing shares for the listing, while its 26 shareholders, including the Bank of Tokyo-Mitsubishi UFJ and Sumitomo Mitsui Banking Corp., will sell a combined 310,400 Seven Bank shares.
It will occupy 4,000 s/f of the ground floor and will offer a drive-through, automatic teller machines and banking services.
Diebold, author of Automation and developer of the electronic networking systems that would make automatic teller machines commonplace, was a longtime supporter of the World Future Society.
The Automatic Teller Machines (ATMs) bought from HBOS are 'non-branch' machines mainly located at shops, petrol stations and railway stations
A number of 'skimming' devices have been seized from Automatic Teller Machines in Monaghan.
The Automatic Teller Machines (ATMs) bought from HBOS are ``non-branch'' machines mainly located at shops, petrol stations and railway stations.
Do automatic teller machines need specialized insurance?

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