Identifies a request for Priority Service.
VALID ENTRIES:
1 = Priority 1
2 = Priority 2
3 = Priority 3
4 = Real Time Permanent Virtual Circuit (PVC)
USAGE: This field is conditional.
NOTE 1: Prohibited when the BSC field on the EUSA or Transport Form is “C”, otherwise optional.
DATA CHARACTERISTICS: 1 numeric character
EXAMPLE: 1