Adjunct arrangement for a telecommunication device

Details Adjunct arrangement for a telecommunication device Adjunct arrangement for a telecommunication device

1997-05-22

1999-06-29

Chan, Wing F.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379 9334, 37910016, H04M 1100

Patent

active

059178957

ABSTRACT:
From facsimile selectors, for instance, adjunct arrangements are known having a muting function for muting a telephone conversation when sending fax data. An adjunct arrangement is described having a low power consumption while at the same time strongly muting a voice communication so that it can easily be battery operated. To this end, in mute mode, the adjunct arrangement has a gyrator that is switched in series with a telephone set, the series circuit being switched parallel to the telephone network. In mute mode, the adjunct arrangement further has a capacitor switched parallel to the telephone set. Furthermore, in mute mode, data is exchanged between the network and the adjunct arrangement by coupling a data receiver and/or transmitter to the telephone line.

REFERENCES:
patent: 4812785 (1989-03-01), Pauker
patent: 5473676 (1995-12-01), Frick et al.
patent: 5506891 (1996-04-01), Brown

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