Circuit arrangement for forming the termination of an...

Details Circuit arrangement for forming the termination of an... Circuit arrangement for forming the termination of an...

2005-09-27

2005-09-27

Tran, Sinh (Department: 2644)

Telephonic communications

Line equalization or impedance matching

C379S394000, C379S399010

Reexamination Certificate

active

06950512

ABSTRACT:
The invention relates to a circuit arrangement for forming the termination of an analogous subscriber line which comprises a first connection and a second connection for connecting a twin-wire analogous subscriber line. Said first connection is linked with said second connection via a series connection of a first capacitor, at least one first adjustable resistor and one second capacitor. According to the invention, a direct current source is linked with the first point of linkage of the first capacitor and the first adjustable resistor. Said direct current source impresses a current which serves to adjust an operating point for voice and data transmission via the analogous subscriber line. The first and the second capacitor block equisignals on the subscriber line so that no direct current can flow via the analogous subscriber line.

REFERENCES:
patent: 4403115 (1983-09-01), Simokat
patent: 5500894 (1996-03-01), Hershbarger
patent: 5515434 (1996-05-01), Cotreau
patent: 6393110 (2002-05-01), Price
patent: 467367 (1992-01-01), None
English Language abstract of EP-0 467 367.

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