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virtual channel identifier (VCI)

The Virtual Channel Identifier (VCI) data field is a channel identifier of virtual channels in ATM. It is an identification number for the logical connection

, the virtual channel (VC).

DQDB data frame

DQDB data frame

In the ATM cell, the VCI data field is a 16 bits long data field, in theDistributed Queue Dual Bus (DQDB) header, the VCI data field is 20 bits long. In ATM networks, the VCI data field is inserted by the ATM switching units.

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Englisch: virtual channel identifier - VCI
Updated at: 06.04.2012
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