| 摘要 |
In the present invention, one or more switches ( 100 ) can be interconnected to one or more Public Safety Answering Points ( 202, 302 ). Each switch has a switching element ( 102 ) for interconnecting a first PSAP to one among a plurality of central offices ( 210, 310 ), a memory ( 104 ) for storage, and a processor ( 106 ) for controlling operations of the switching element and the memory. The processor is programmed to detect ( 408 ) a service interruption between the first PSAP and a first central office, and cause ( 412 ) the switching element to switch the first PSAP to a second central office selected among the plurality of central offices.
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