发明名称 |
Integrated Services User Part (ISUP)/Session Initiation Protocol (SIP) Gateway for Unlicensed Mobile Access (UMA) Emergency Services Call Flow |
摘要 |
An ISUP/SIP gateway is implemented to encapsulate SS7 location requests from a switched telephone network into an Internet protocol SIP message including one or more location objects. The ISUP/SIP gateway is implemented between a mobile switching center (MSC) and a VoIP positioning center (VPC) to provide support of unlicensed mobile access (UMA) voice over Internet Protocol (VoIP) call routing, e.g., for E9-1-1, 4-1-1, 2-1-1, etc. The disclosed location objects that are encapsulated into a SIP message includes calling party number, called party number, CGI, International Mobile Subscriber Identity (IMSI), mobility indicator, and/or access point MAC address. At the SIP/ISUP gateway, SS7 integrated services user part (ISUP) location request messages are encapsulated within SIP. The SIP encapsulated location request message is then routed over the Internet to a destination VoIP positioning center (VPC). |
申请公布号 |
US2015124657(A1) |
申请公布日期 |
2015.05.07 |
申请号 |
US201514591530 |
申请日期 |
2015.01.07 |
申请人 |
TeleCommunication Systems, Inc. |
发明人 |
Mitchell Don |
分类号 |
H04W4/22;H04L29/06;H04M7/00;H04W4/02 |
主分类号 |
H04W4/22 |
代理机构 |
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代理人 |
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主权项 |
1. A method of providing location based support to a call made via a UMA network, comprising:
encapsulating a location request with respect to a call from an unlicensed mobile access (UMA) phone, said location request being received by an ISUP/SIP gateway and encapsulated in a SIP message; and passing said SIP encapsulated location request to a voice over Internet protocol (VoIP) positioning center. |
地址 |
Annapolis MD US |