发明名称 |
International universal call progress analysis system |
摘要 |
A call progress analysis system is provided which is generic to any telecommunications system with which it is used due to configurable detection parameters. A signal on a channel of the telecommunications system is detected in intervals of changing frequency composition and compared to stored pattern descriptors, each of which defines a different call progress signal. In an alternative embodiment of the invention, a frequency mask is computed that is specific to a user-defined call progress analysis class. This frequency mask is used to make the DSP receiver ignore frequencies that are not part of any call progress pattern in a particular class. The frequency mask can be used in a frequency detection mode or an energy detection mode. In either mode, the detector can be customized for each channel.
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申请公布号 |
US6701131(B2) |
申请公布日期 |
2004.03.02 |
申请号 |
US20010761975 |
申请日期 |
2001.01.17 |
申请人 |
EXCEL SWITCHING CORPORATION |
发明人 |
KICKLIGHTER KEVIN C.;WELLER FRANZ |
分类号 |
G06F9/46;G06F12/08;H04M3/00;(IPC1-7):H04Q7/10 |
主分类号 |
G06F9/46 |
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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