Patent ID: 8228897

Claim:
A call protocol conversion gateway, comprising: a physical receiver module adapted to receive a VoIP 911 originating call converted to signaling system number 7 (SS7) ANSI-41 J-STD-036 transaction capability application part (TCAP)-based call signaling; a converter module adapted to convert said SS7 ANSI-41 J-STD-036 transaction capability application part (TCAP)-based call signaling into session initiation protocol (SIP)-based call signaling; and a physical transmitter module adapted to transmit said SS7 ANSI-41 J-STD-036 transaction capability application part (TCAP)-to-SIP converted call signaling associated with said VoIP 911 originating call to a physical voice over Internet protocol (VoIP) positioning center to retrieve routing information associated with said 911 originating call; wherein said receiver receives routing instruction including an emergency services query key (ESQK) and a trunk select code, and translates said ESQK into an emergency services routing key (ESRK).