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Document Type and Number:
Japanese Patent JPS6118379
Kind Code:
B2
Abstract:
A communication line interface circuit including a floating current source supplying a constant current substantially independent of loop length is disclosed. The line interface circuit is provided with circuitry for line supervision and the detection of dial pulse signaling.

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Inventors:
REIMONZU FUREIMANISU
Application Number:
JP4278A
Publication Date:
May 12, 1986
Filing Date:
January 05, 1978
Export Citation:
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Assignee:
EI TEII ANDO TEII TEKUNOROJIIZU INC
International Classes:
H04Q3/42; H02M3/28; H04M19/00; H04Q3/72



 
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