Virtual channel connection- the ATM logical connection
Virtual channel connection referred to as VCC.
Analogous to a virtual circuit in X.25 or a data link connection in frame relay.
VCC is the basic unit of switching in ATM.
VCC connects two end users over the network.
VCC allows exchange of information in the form of fixed cells at variable rates.
VCCs allow for user-network information exchange also called “control signaling”.
VCCs allow for network-network information exchange for the purposes of network management and routing.