发明名称 |
Caller identification interface using line reversal detection |
摘要 |
An interface for modems is described which provides rapid identification of a caller and limited access based on a variety of parameters obtained from caller identification information encoded by the telephone company. A line reversal detector is incorporated to signal when the caller identification information is available for reception. A two stage detection system is used to eliminate false signaling of line reversals and discriminate line reversals from ringing and other noise signals.
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申请公布号 |
US5905794(A) |
申请公布日期 |
1999.05.18 |
申请号 |
US19960730371 |
申请日期 |
1996.10.15 |
申请人 |
MULTI-TECH SYSTEMS, INC. |
发明人 |
GUNN, TIMOTHY D.;SUN, TING |
分类号 |
H04M1/57;H04M11/06;(IPC1-7):H04M1/57 |
主分类号 |
H04M1/57 |
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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