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Switched Virtual Circuit (SVC)

Definition - What does Switched Virtual Circuit (SVC) mean?

A switched virtual circuit (SVC) is a type of virtual circuit in telecommunication and computer networks that is used to establish a temporary connection between two different network nodes until completion of a data transfer session, after which the connection is terminated.

Techopedia explains Switched Virtual Circuit (SVC)

SVCs are implemented in data, voice or video communication connection-based packet and circuit switching networks that have small or limited time usability. Typically, SVCs are created and managed by the data terminal equipment (DTE) or frame relay device.

A remote user requests a connection with the host server/device, and a virtual circuit/connection is created between both nodes. When the circuit connection's purpose is complete, or it becomes idle, the SVC is suspended. For example, a SVC created between a remote user and server for a file download is closed when the download process is completed.

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