VPI - Virtual Path Identifier

Identifies the logical connection address between the provider’s switch and the circuit for the virtual path requested.

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”, the BSC field on the Transport or EUSA Form is “C”, 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 “B” or blank, and the VCACT field on the VC Form is “D”, “N” or “R”.

NOTE 2: Optional when the first position of the REQTYP field on the ASR Form is “V” or “X”, the BSC field on the Transport or EUSA Form is “C”, the VST field on the VC Form is “B” or blank and the VCACT field on the VC Form is “K”.

NOTE 3: Otherwise prohibited.

DATA CHARACTERISTICS: 4 numeric characters

EXAMPLE: 6 2 3

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