Virtual Circuit is a logical connection frequently used in #Packet Switching especially in #Frame Relay. It can be pass through several data communications equipments (DCE) throughout the network. Multiplexing# multiple virtual circuit into a single physical circuit is possible.
There exists two types of Virtual Circuit:
SVC is one of two types of #Virtual Circuit that provides temporary connection. It is typically used for irregular data transfer between data terminal equipments (DTE) across #the network. It has 4 operational states: Call Setup, Data Transfer, Idle and Call Termination.
Virtual circuit# is basically a logical connection between two data terminal equipment (DTE) devices, such as terminals, PCs, routers and bridges, across a Frame Relay packet-switched network which can be uniquely identified by data-link connection identifier (DLCI) at the network endpoints. Since it is logical, within a single physical circuit there can exist multiple virtual circuits. Within this virtual circuit, there could be multiple data communications equipments (DCE), usually a Switch#, which provides clocking and switching services in a network.