VCI

virtual channel identifier

The VCI is part of the address of a VCC. The complete address of the VCC consists of the VCI and the VPI. A unique numerical tag, as defined by a 16-bit field in the ATM cell header, identifies a virtual channel, over which the cell is to travel. VCIs are assigned for one hop only. Each switch cross-connects cells from one VC to the next, reassigning VCIs.