Virtual Circuits

Some articles on virtual circuits, circuits, circuit, virtual circuit, virtual:

Frame Relay - Virtual Circuits
... Two types of circuits exist permanent virtual circuits (PVCs) which are used to form logical end-to-end links mapped over a physical network, and switched virtual circuits (SVCs) ... The latter are analogous to the circuit-switching concepts of the public switched telephone network (PSTN), the global phone network ...
Permanent and Switched Virtual Circuits in ATM, Frame Relay, and X.25
... Switched virtual circuits (SVCs) are generally set up on a per-call basis and are disconnected when the call is terminated however, a permanent virtual circuit (PVC) can be established as an option to provide a ... A switched virtual circuit (SVC) is a virtual circuit that is dynamically established on demand and is torn down when transmission is complete, for example after a phone call or a file download ... A permanent virtual circuit (PVC) is a virtual circuit established for repeated/continuous use between the same DTE ...
Packet Switching in Networks
... in that, despite being based on packet switching methods, it provided virtual circuits to the user ... These virtual circuits carry variable-length packets ... Asynchronous Transfer Mode (ATM) also is a virtual circuit technology, which uses fixed-length cell relay connection oriented packet switching ...
Asynchronous Transfer Mode - ATM Concepts - Types of Virtual Circuits and Paths
... ATM can build virtual circuits and virtual paths either statically or dynamically ... Static circuits (permanent virtual circuits or PVCs) or paths (permanent virtual paths or PVPs) require that the circuit is composed of a series of segments, one for each pair of interfaces through which it passes ... are built by specifying the characteristics of the circuit (the service "contract") and the two end points ...
Voice Over IP - Challenges - Quality of Service
... Communication on the IP network is inherently less reliable in contrast to the circuit-switched public telephone network, as it does not provide a network-based mechanism to ensure that data packets are not lost, and ... A virtual circuit identifier (VCI) is part of the 5-byte header on every ATM cell, so the transmitter can multiplex the active virtual circuits (VCs) in any arbitrary order ... or not he takes advantage of multiple virtual circuits - and few can ...

Famous quotes containing the words circuits and/or virtual:

    The Buddha, the Godhead, resides quite as comfortably in the circuits of a digital computer or the gears of a cycle transmission as he does at the top of a mountain or in the petals of a flower.
    Robert M. Pirsig (b. 1928)

    Tragedy dramatizes human life as potentiality and fulfillment. Its virtual future, or Destiny, is therefore quite different from that created in comedy. Comic Destiny is Fortune—what the world will bring, and the man will take or miss, encounter or escape; tragic Destiny is what the man brings, and the world will demand of him. That is his Fate.
    Susanne K. Langer (1895–1985)