Default Routing. The capability to route a 9-1-1 call to a designated (default) PSAP when the incoming 9-1-1 call cannot be selectively routed due to an automatic number identification or automatic location identification (ANI/ALI) failure or other cause.
Default Routing. Default Routing is activated when an incoming 9-1-1 call cannot be selectively routed due to an ANI failure, garbled digits or other causes. Such incoming calls are routed from the 9-1-1 Control Office to a default PSAP if requested by the primary PSAP. Each incoming 9-1-1 facility group to the Control Office is assigned to a designated default PSAP. Default ANI and ALI data is provided when a call is Default Routed to indicate such routing has taken place.
