An identifier found within the service tag (commonly referred to in MEF 26.1as S-TAG) which is typically associated with OVC end points at an ENNI.
VALID ENTRIES:
0001 - 4095
USAGE: This field is conditional .
NOTE 1: Required when the associated NCI field on the EVC Form specifies an S-VLAN based map, and the S-VLAN is assigned by the provider, otherwise prohibited.
DATA CHARACTERISTICS: 9 numeric characters (including 1 pre-printed hyphen)
EXAMPLES: 0 7 5 2 -
0 7 5 0 - 0 7 5 9