发明名称 |
SS7 ISUP to SIP based call signaling conversion gateway for wireless VolP E911 |
摘要 |
An SS7-based call protocol conversion gateway that translates between circuit-switched SS7 protocols and session initiation protocol (SIP) oriented protocol, allowing an E911 call initiated over a switched network to be routed by a VoIP network. The SS7-based call protocol conversion gateway provides a PSAP with MSAG quality (street address) information about a VoIP dual mode phone user without the need for a wireless carrier to invest in building out an entire VoIP core. Thus, wireless carriers may continue signaling the way they are today, i.e., using the J-STD-036 standard for CDMA and GSM in North America, yet see benefits of a VoIP network core, i.e., provision of MSAG quality location data to a PSAP. |
申请公布号 |
US9357078(B2) |
申请公布日期 |
2016.05.31 |
申请号 |
US201514594545 |
申请日期 |
2015.01.12 |
申请人 |
Telecommunication Systems, Inc. |
发明人 |
Mitchell Don |
分类号 |
H04L12/66;H04M7/00;H04L29/06;H04W4/22 |
主分类号 |
H04L12/66 |
代理机构 |
Tarolli, Sundheim, Covell & Tummino LLP |
代理人 |
Tarolli, Sundheim, Covell & Tummino LLP |
主权项 |
1. An ANSI-41 J STD-036 to SIP call protocol conversion gateway server, comprising:
a physical receiver module configured to receive a wireless call using signaling system number 7 (SS7) ANSI-41 J-STD-036 transaction capability application part (TCAP)-based call signaling; an SS7 based ISUP to SIP protocol conversion gateway 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) server for routing to a desired recipient VoIP device; wherein said receiver receives routing instruction from said Voice over Internet protocol (VoIP) server, said routing instruction being assigned based upon a location retrieved from a physical location information service/subscriber line database (LIS/SLDB). |
地址 |
Annapolis MD US |