Contingency routing involves the re-routing of 911 calls from one PSAP to another in the event the original PSAP is unable to receive or handle its 911 calls.

Contingency routing involves the re-routing of 911 calls from one PSAP to another in the event the original PSAP is unable to receive or handle its 911 calls.

• A. When the original PSAP experiences a power outage.
• B. When the caller requests a specific PSAP.
• C. Involves re-routing of 911 calls from one PSAP to another when the original PSAP cannot receive or handle its 911 calls.
• D. It redirects all calls to a central regional PSAP during emergencies.

Answer: (C)

Contingency routing is the automatic rerouting of 9-1-1 calls from the primary PSAP to a secondary PSAP when the primary cannot receive or process those calls. This ensures continuous access to emergency response even during outages or overloads. The correct choice captures this failover mechanism exactly: calls are redirected to another PSAP because the original cannot receive or handle them. The other options describe situations that are not the defining mechanism: a caller requesting a specific PSAP is a user choice, not automatic rerouting; redirecting all calls to a central regional PSAP during emergencies describes a broader regional strategy rather than standard contingency routing; and a power outage is a scenario that might trigger rerouting but does not define the concept itself.

Contingency routing is the automatic rerouting of 9-1-1 calls from the primary PSAP to a secondary PSAP when the primary cannot receive or process those calls. This ensures continuous access to emergency response even during outages or overloads. The correct choice captures this failover mechanism exactly: calls are redirected to another PSAP because the original cannot receive or handle them. The other options describe situations that are not the defining mechanism: a caller requesting a specific PSAP is a user choice, not automatic rerouting; redirecting all calls to a central regional PSAP during emergencies describes a broader regional strategy rather than standard contingency routing; and a power outage is a scenario that might trigger rerouting but does not define the concept itself.