DLCI - Data Link Connection Identifier

Identifies the logical connection address between the provider switch and the circuit.

USAGE: This field is conditional.

NOTE 1: Required when the first position of the REQTYP field on the ASR Access Service Request Form is “V” or “X” and the BSC field on the Transport or EUSA Form is “F” and the VST field on the VC Form All information required for ordering Virtual Connection services is provided in the various fields contained within the VC Form. The virtual circuit detail section provides entries for the specification of ordering options. The related circuit detailsection provides entries for describing the information related to establishing the physical connection associated with the VC order. is “A”, “C” or blank and the NVC field on the Transport or EUSA Form is populated.

NOTE 2: Optional when the PVCI field on the ASR Form is populated.

NOTE 3: Otherwise prohibited.

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.