Identifies the type of broadband Service translation being requested.
VALID ENTRIES:
A = Frame Relay to ATM
B = ATM to Frame Relay
C = Frame Relay to ATM to Frame Relay
NOTE 1: When the VST field is blank, the entry in the BSC field on the Transport or EUSA Form will identify the type of virtual service translation being requested.
USAGE: This field is conditional.
NOTE 1: Required when requesting broadband service translations from one broadband service category to another and the VCACT field is “N”, “C” or “R”, otherwise prohibited.
DATA CHARACTERISTICS: 1 alpha character
EXAMPLE: B