This field is used to identify a circuit or circuits segment on a request for multiple circuits.
NOTE 1: REF NUM may be used by the customer and the provider for control and tracking purposes during the provisioning process.
NOTE 2: The REF NUM assigned to each circuit/segment will remain associated for the life of the ASR.
NOTE 3: When provided by the customer, each circuit segment the REF NUM must be unique beginning with “0001” and correspond to that of the provided request.
NOTE 4: When not provided, the REF NUM must be unique beginning with ‘0001’ for the first generated ECCKT regardless of the existence of the ACI, ARI or MSL records and increment consecutively for each ECCKT entry.
NOTE 5: When a specific circuit or segment, identified by its REF NUM, has been canceled in the request provided by the customer, the corresponding ECCKT REF NUM will not be included as part of the response. The remaining circuit or segment will maintain their original association and not be renumbered.
USAGE: This field is conditional.
NOTE 1: Required when the RT field is “F”, and the second position of the TQ field on the ASR Form is not “N” or “X”, otherwise optional.
DATA CHARACTERISTICS: 4 numeric characters
EXAMPLE: 0 0 2 3