virtual call setup

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• Call super — is a code smell or anti pattern of object oriented programming, i.e. a bad solution to a common design problem. Call super requires users of a particular interface to override the method of a superclass and call the overridden from the overriding …   Wikipedia

• History of virtual learning environments 1990s — In the history of virtual learning environments, the 1990s was a time of growth, primarily due to advent of the affordable computer and of the Internet.1990s1990* Formal Systems Inc. of Princeton, NJ, USA introduces a DOS based Assessment… …   Wikipedia

• History of virtual learning environments — A virtual learning environment (VLE) is a system that creates an environment designed to facilitate teachers in the management of educational courses for their students, especially a system using computer hardware and software, which involves… …   Wikipedia

• X.25 — is an ITU T standard network layer protocol for packet switched wide area network (WAN) communication. An X.25 WAN consists of packet switching exchange (PSE) nodes as the networking hardware, and leased lines, Plain old telephone service… …   Wikipedia

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• Packet Layer Protocol — or PLP is the network layer protocol for X.25 protocol. PLP manages the packet exchanges between DTE (data terminal) devices across VCs (virtual circuits). PLP also can be used on ISDN using Link Access Procedures, D channel (LAPD).There are 5… …   Wikipedia

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• Telecommunications rating — In telecommunications rating is the activity of determining the cost of a particular call. [ Carl Wright (2001) [http://www.servicelevel.net/rating matters/newsletters/issue06.htm What is Rating? What is Billing?] , Rating Matters issue n. 6, 21… …   Wikipedia

• X.25 — семейство протоколов канального уровня сетевой модели OSI. Предназначалось для организации WAN на основе телефонных сетей с линиями с достаточно высокой частотой ошибок, поэтому содержит развитые механизмы коррекции ошибок. Ориентирован на работу …   Википедия

• Microsoft Response Point — was an advanced software based telephone system developed by Microsoft. Response Point, a PBX system targeting small businesses with less than 50 employees,[1][2] was launched in March 2007, with systems available on the market in the fourth… …   Wikipedia