Public services access point (PSAP) designation of preferred emergency call routing method via internet or public switched telephone network (PSTN)
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United States of America Patent
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N/A
Issued Date -
Dec 27, 2007
app pub date -
Jun 27, 2006
filing date -
Jun 27, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The use of the VoIP emergency network for routing wireless E911 calls to a designated PSAP. In this embodiment, a mobile positioning center (MPC) assigns an ESRK per existing prior art, but uses the invention to route the call to the PSAP via the VoIP server and an ESGW. This relieves wireless carriers of the obligation to install and maintain expensive dedicated SS7 or CAMA trunks from each MSC to each selective router in the areas served by that MSC. Instead, wireless 911 calls can be consolidated by ESGW vendors, maximizing the efficiency of the dedicated trunks to the selective router by sharing those trunks with multiple MSCs.
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