| 发明名称 |
Restriction of communication in VoIP address discovery system |
| 摘要 |
In one embodiment, a system is provided to restrict VoIP communication. The system may validate a Voice over Internet Protocol (VoIP) call initiation message based on demonstrated knowledge of a Public Switched Telephone Network (PSTN) call.
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| 申请公布号 |
US8274968(B2) |
申请公布日期 |
2012.09.25 |
| 申请号 |
US20090495595 |
申请日期 |
2009.06.30 |
| 申请人 |
ROSENBERG JONATHAN DAVID;JENNINGS CULLEN F.;CISCO TECHNOLOGY, INC. |
发明人 |
ROSENBERG JONATHAN DAVID;JENNINGS CULLEN F. |
| 分类号 |
H04L12/28 |
主分类号 |
H04L12/28 |
| 代理机构 |
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