Patent ID: 9001719
Filing Date: 2015-04-07
Classification: H04L,H04M,H04W

Abstract:
1. Apparatus to translate emergency services protocol call setup information from ANSI-41 ORREQ to VoIP, comprising: a receiver to receive, from a mobile switching (MSC), an ANSI-41 ORREQ containing at least one of a call back number (CBN) and emergency service routing digits (ESRD); a converter to convert said at least one of a CBN and an ESRD to a VoIP request; a transmitter to send, to a VoIP positioning center (VPC), said VoIP request; and a VoIP receiver to receive, from said VoIP positioning center (VPC), said VoIP request including at least one of an emergency service query key (ESQK) and an emergency service routing number (ESRN), said VoIP request having said at least one of an ESQK and an ESRN inserted in at least one of a designated field; whereby said ORREQ permits setup of an emergency services call with at least one of an ISDN User Part (ISUP) and Multi-Frequency (MF) signaling.