DLCI - Data Link Connection Identifier

Identifies the logical connection between the provider’s switch and the circuit.

USAGE: This field is conditional.

NOTE 1: Required when the BSC field on the EUSA or Transport Form is “F” and the VCACT field is “C” “D” or “R”.

NOTE 2: Required when the VST field is “A”, or “C” and the VCACT field is “C”, or “R”.

NOTE 3: Prohibited when the BSC field on the EUSA or Transport Form is “C”.

NOTE 4: Prohibited when VST field is “B”.

NOTE 5: Otherwise optional.

DATA CHARACTERISTICS: 4 numeric characters

EXAMPLE: 1 6

NOTE 1: This example illustrates a numeric value but is left justified since it is treated as text.