H - Electricity – 04 – M
Patent
H - Electricity
04
M
379/63
H04M 19/00 (2006.01)
Patent
CA 2022923
A hybrid circuit which converts receiving side four-wire signals from a switching network into two- wire signals, supplies the same through line B and line A to a telephone terminal equipment, and converts two-wire signals supplied from the telephone terminal equipment through the line A and the line B to the switching network into transmitting side four-wire signals, including a pair of battery feeding and terminating resistors connected between power sources (GND and VBB ) and the line B and line A and a receiving side mirror circuit and transmitting side mirror circuit both connected between the lines B and A.
Takato Kenji
Tojo Toshiro
Yamamoto Yuzo
Fujitsu Limited
Mcfadden Fincham
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