发明名称 |
Enhanced emergency service for ISDN based emergency services in a wireless telecommunications system |
摘要 |
The system of the invention passes wireless caller location information through the common channel signaling network (CCSN) to the PSAP such that the PSAP can provide enhanced emergency services. The caller location information such as the latitude and longitude of the wireless device or the cell and cell sector from which a call is made is encoded in the ISUP (ISDN User Part) of the call set up message over the CCSN. The public switched network routes the call based on the called party number (CDPN) parameter to the appropriate selective router and the selective router routes the call to the appropriate PSAP based on the caller location. The caller location information is transmitted over an ISDN interface to the PSAP. The PSAP can then access additional caller information based on the CDPN parameter to provide enhanced emergency services. Thus, the system of the invention allows enhanced 9-1-1 service to be provided in wireless systems while utilizing existing wireless infrastructure and protocols.
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申请公布号 |
US6256489(B1) |
申请公布日期 |
2001.07.03 |
申请号 |
US19970847370 |
申请日期 |
1997.04.24 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
LICHTER JOSEPH JAMES;MEYER MICHAEL JOSEPH;MOULOS TED |
分类号 |
H04Q3/66;H04W4/22;(IPC1-7):H04Q7/22 |
主分类号 |
H04Q3/66 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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