Technical Issues of 9-1-1 and VRS
It is all about location, location, and location…
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Determining the location of the caller.
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Determining the location of the correct Public Service Answering Point or PSAP to send the call to. The PSAP is a facility equipped and staffed to receive 9-1-1 calls.
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Passing the location of the relay caller to the PSAP in the format they are accustomed to receiving it.