Electronic voice circuit configuration

Details Electronic voice circuit configuration Electronic voice circuit configuration

1997-06-16

1999-08-17

Le, N.

Telephonic communications

Substation or terminal circuitry

Conversion of signal form

379389, 379390, 379391, 379394, 379395, 379399, 379402, 379413, H04H 100

Patent

active

059404981

ABSTRACT:
An electronic voice circuit configuration can be connected through a first and a second line terminal to a telephone line. The electronic voice circuit configuration has a calling part, a transmitting device, a receiver device, a symmetrical modulator circuit with voltage stabilization, a symmetrical equipment impedance device with a device for symmetry control and direct-current limiting, and a symmetrical control device.

REFERENCES:
patent: 4723278 (1988-02-01), Nishio et al.
patent: 4916735 (1990-04-01), Iida et al.
patent: 5032819 (1991-07-01), Sakuragi et al.
patent: 5323461 (1994-06-01), Rosenbaum et al.

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