Solutions for voice over internet protocol (VoIP) 911...

Details Solutions for voice over internet protocol (VoIP) 911... Solutions for voice over internet protocol (VoIP) 911...

2007-08-21

2007-08-21

Woo, Stella (Department: 2614)

Telephonic communications

Emergency or alarm communications

Central office responsive to emergency call or alarm

C455S404200

Reexamination Certificate

active

10836330

ABSTRACT:
An E-9-1-1 voice-over-IP (VoIP) solution is provided wherein a 911 call from a mobile VoIP device is routed directly to the correct Public Safety Answer Point (PSAP) via dedicated trunks, together with correct location information and call-back number. VoIP gateways are implemented locally, at least one per LATA, and accept VoIP packetized data inbound, and convert it to standard wireline voice calls. Calls are routed to an IP address at the VoIP gateway, which then egresses the call to a voice port at a selective router. Mid-call updating of location of a moving VoIP terminal is provided to a PSAP. The location of the VoIP is validated using HTTP based protocol by pushing location information to a VoIP location server, and comparing it against a geographic location database to confirm that a contained street address is valid.

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