发明名称 |
Methods, apparatus and computer program products for associating local telephone numbers with emergency phone calls in a packet switched telephone system |
摘要 |
A packet switched telephone system includes a packet switched routing apparatus. The packet switched routing apparatus selectively associates a local telephone number with a phone call based on a called telephone number, and routes the phone call based on the called telephone number. The local telephone number may be substituted for a calling telephone number when the called telephone number corresponds to a predefined number, such as an emergency number. When the called telephone number corresponds to an emergency number, the phone call may be routed with the substituted local telephone number to a Public Safety Access Point (PSAP) that services the local area of the subscriber.
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申请公布号 |
US8223750(B2) |
申请公布日期 |
2012.07.17 |
申请号 |
US20090534302 |
申请日期 |
2009.08.03 |
申请人 |
EPLEY ROBERT;AT&T INTELLECTUAL PROPERTY I, L.P. |
发明人 |
EPLEY ROBERT |
分类号 |
H04L12/66;H04L29/06;H04M3/51;H04M7/00;H04M11/00 |
主分类号 |
H04L12/66 |
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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