Patent ID: 8208461
Filing Date: 2012-06-26
Classification: H04L,H04M,H04W

Abstract:
1. A call protocol conversion gateway between an SS7 MAP/Lg+ based communication network and a physical voice over Internet (VoIP) positioning center, comprising: a first physical interface adapted to receive signaling system number 7 (SS7) MAP/Lg+-based call signaling; a software module adapted to convert said SS7 MAP/Lg+ based call signaling into session initiation protocol (SIP)-based call signaling; and a second physical interface adapted to pass said SS7 MAP/Lg+-to-SIP converted SIP call signaling to said physical voice over Internet (VoIP) positioning center; wherein the gateway receives a routing instruction from a VoIP positioning center (VPC), including an emergency services query key (ESQK) and a trunk select code; and translates said ESQK into an emergency services routing key (ESRK).