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Last modified: Tuesday, March 12, 2002 

Short for permanent virtual circuit, a virtual circuit that is permanently available. The only difference between a PVC and a switched virtual circuit (SVC) is that an SVC must be reestablished each time data is to be sent. Once the data has been sent, the SVC disappears. PVCs are more efficient for connections between hosts that communicate frequently.

PVCs play a central role in Frame Relay networks. They're also supported in some other types of networks, such as X.25.

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SMC Corporation: Valves - Offers a complete range of pneumatic and electrical components, including actuators, valves, instrumentation, and vacuum and air preparation parts.

JGB Enterprises: Valves - Provides equipment used in commercial and military applications throughout the world. Features a variety of valves.

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Thomas Global Register: Valves - Industrial product directory allows users to send RFQs, view catalogues and compare suppliers. Search for suppliers of Valves.

Royal Liner: Tank Liners - Manufactures tank liners, storage tanks, and containment products. Includes rigid and flexible liners as well as liners for potable water.

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Pike Industries: Valve Manufacturer - National distributor of industrial valves, including stainless steel ball valves, sanitary stainless ball valves, and sanitary diaphragm valves.

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related terms


Frame Relay


virtual circuit

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