Identifies the Synchronous Transport Signal (STS), Virtual Tributory (VT) Group and VT Timeslot of the ring.
NOTE 1: Positions 7 through 11 required when utilizing two dedicated rings.
USAGE: This field is conditional.
NOTE 1: Required when the ACT field on the ASR Form is "N", "C" or "T", the FNI field on the ASR Form is populated and the customer has assignment control, otherwise prohibited.
DATA CHARACTERISTICS: 11 numeric characters (including 1 preprinted hyphen)
EXAMPLES: 1 1 1 2 1 -
1 1 1 2 1 - 1 1 1 2 2