Identifies the REF or TSC of the trunk group carrying traffic with a bearer capability indicating 64 KB.
VALID ENTRIES:
A through D
Valid TSC
NOTE 1: Only one trunk group can be referenced in this field.
NOTE 2: When this trunk group is referenced in the Common Section, the associated REF entry must be populated in this field.
USAGE: This field is conditional.
NOTE 1: Required when exception routing by 64 KB bearer capability is ordered or changed, otherwise prohibited.
DATA CHARACTERISTICS: 8 alpha/numeric characters
EXAMPLES: A
A B 1 2 3 4 5 6