Identifies the provider service order number for the trunk facility.
USAGE: This field is conditional.
NOTE 1: Required when the ACT field on the ASR Form is "N" or "D", the FCKT field is populated and the RT field is "F".
NOTE 2: Prohibited when the RT field is āSā.
NOTE 3: Otherwise optional.
DATA CHARACTERISTICS: 17 alpha/numeric characters
EXAMPLE: C 8 6 0 2 4 1 6