SFG (Simulated Facility Group)

SFG (Simulated Facility Group) is a set of trunks established for a particular transport purpose to which incoming calls are routed. When this is simulated, this is a form of call blocking for congestion control.

NENA 03-503, NENA SS7 Guidelines for Wireline and VoIP Emergency Services Gateway Interconnection to 9-1-1 Selective Routers