ATM logical connection

Virtual channel connection- the ATM logical connection

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Virtual channel connection referred to as VCC.

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Analogous to a virtual circuit in X.25 or a data link connection in frame relay.

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VCC is the basic unit of switching in ATM.

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VCC connects two end users over the network.

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VCC allows exchange of information in the form of fixed cells at variable rates.

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VCCs allow for user-network information exchange also called “control signaling”.

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VCCs allow for network-network information exchange for the purposes of network management and routing.