发明名称 |
METHOD AND CONFIGURATION FOR FORMING A LINE TERMINATION OF A TELEPHONE LINE |
摘要 |
In a method and configuration for forming a line termination at two line terminals of a telephone line, alternating signals are separated from direct signals applied to line terminals, referred to a reference variable and added to a transmission signal from a transmission terminal to form a resultant actual-value signal. The resultant actual-value signal is compared with a reference signal at a gain-controlled amplifier. The reference signal is formed with an impedance transmission function corresponding to a given termination impedance by weighting the alternating signal at one of the line terminals being connected to a current sensor resistor. A current between the line terminals is determined with a control transistor associated with the current sensor resistor. The control transistor is controlled with the gain-controlled amplifier.
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申请公布号 |
CA2035099(C) |
申请公布日期 |
2000.08.29 |
申请号 |
CA19912035099 |
申请日期 |
1991.01.28 |
申请人 |
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发明人 |
DIELACHER, FRANZ;WALLNBERGER, GERALD;FORMANEK, KARL |
分类号 |
H04M1/58;H04M1/76;H04M19/08;(IPC1-7):H04M7/00 |
主分类号 |
H04M1/58 |
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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