Emergency call-routing apparatus, and an associated method, for use in a
packet-based, telephonic network. An emergency call router is positioned
selectably to provide local call handling functionality to a local
network that is normally connected by way of an access gateway to the
telephonic network whose operation is normally controlled by a
softswitch. The apparatus is used when, e.g., a total communication link
failure condition occurs between the access gateway and the softswitch.
The emergency call router selectably routes calls within the local
network to permit continued, local calling functionality in spite of the
failure of the communication link. High-priority calls, such as calls
placed to an emergency dispatch center, are routed within the local
network to a designated, local-network station. And local calls are also
selectably routed by the emergency call router. A call priority scheme is
also used in the event that call capacity is exceeded. Calls of higher
priority are permitted while calls of lower priority are blocked.