Identifies the circuit number or range of circuit numbers used by the customer for the T1 Transport involved.
NOTE 1: CKR1 is used by the customer as a cross reference to the provider circuit ID(s) and in many cases to identify the customer’s end-to-end service.
USAGE: This field is conditional.
NOTE 1: Required when the CKR1 field on the FGA Form or Trunking and ACI Forms are populated, otherwise prohibited.
DATA CHARACTERISTICS: 40 alpha/numeric characters
EXAMPLE: L 0 0 0 2 - 0 0 2 4