发明名称 |
Continuity check tone detector for use with a digital telecommunication system |
摘要 |
A continuity check tone detector for use with a digital telecommunication system and being designed for detecting continuous tones on voice transmission paths temporarily established between a digital tone generator and the detector across a switching network under control of a switch control unit. The tone detector includes detector interfaces receiving serial tone information from each transmission path in order to derive a digital tone sample and serial control information from the switch control unit in order to convert the same into timing and control signals. A digital signal processor under control of said timing and control signals linearizes and filters received tone samples, measures the power thereof, and supplies corresponding output data. A control processor receives this output data for evaluating the same with respect to individually set power level and predetermined duration for determining the presence of a continuous test tone.
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申请公布号 |
US4566093(A) |
申请公布日期 |
1986.01.21 |
申请号 |
US19840602794 |
申请日期 |
1984.04.23 |
申请人 |
SIEMENS CORPORATE RES. & SUPPORT, INC. |
发明人 |
DIAZ, FELIX V. |
分类号 |
H04M3/24;(IPC1-7):H04J1/16;H04J3/14 |
主分类号 |
H04M3/24 |
代理机构 |
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代理人 |
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主权项 |
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