Identifies the 3 digit vertical service code needed to route a designated 10 digit, 5YY or 700 telephone number associated with an Advanced Intelligent Network (AIN) Vertical Service.
VALID ENTRIES:
Three digit Vertical Service Code
NOTE 1: These three digit codes are assigned by the provider during pre-negotiations.
USAGE: This field is conditional.
NOTE 1: Required when vertical services are being ordered, otherwise prohibited.
DATA CHARACTERISTICS: 3 numeric characters
EXAMPLE: 3 4 5