| 摘要 |
The present invention is directed generally to geographic referenced telephone switching. 9-1-1 emergency telephone calls are routed to alternative public safety answering points (PSAPs) based on the caller's location in relation to the proper emergency service provider and the availability of primary and backup PSAPs. Essentially the formatter gathers and verifies caller information, matches transmission formats with the a determined call destination, generates and transmits a data communication with caller information, and terminates the phone call at the proper endpoint. In certain embodiments, calls that would typically be routed to PSAP equipment are routed to non-standard PSAP devices such as a cellular telephone operable to receive text messages.
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