发明名称 |
Monitoring selected IP voice calls through activity of a watchdog program at an IP-addressing mapping check point |
摘要 |
Surveillance of IP voice calls over a public communication IP link is achieved by a WatchDog program, associated with an IP Address Mapping Check Point translating IP phone numbers into IP addresses, that are connected to a head end hub connected in turn to a Hybrid Fiber Coax (HFC) link of IP phone users or to a backbone network carrying IP voice packets.
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申请公布号 |
US6381220(B1) |
申请公布日期 |
2002.04.30 |
申请号 |
US19990375754 |
申请日期 |
1999.08.18 |
申请人 |
AT&T CORP |
发明人 |
KUNG FEN-CHUNG;RUSSELL JESSE EUGENE;SANKALIA ANISH;WANG SPENCER C. |
分类号 |
H04L12/26;H04M3/22;H04M7/00;(IPC1-7):H04L12/28 |
主分类号 |
H04L12/26 |
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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