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...http://www.google.co.uk/patents/US20090004999?utm_source=gb-gplus-sharePatent US20090004999 - Solutions for voice over internet protocol (VoIP) 911 location services
