Identifies the usage of the network address (point code) in the common channel signaling network.
VALID ENTRIES:
I = Intermediate GTT Signaling Transfer Point
G = Gateway Signaling Transfer Point
S = Signaling Point (e.g., operator services switch)
USAGE: This field is conditional.
NOTE 1: Optional when the PCACT field is populated and the ACT field on ASR Form is “C”, otherwise prohibited.
DATA CHARACTERISTICS: 1 alpha character
EXAMPLE: G