Transmission of charging signals on a data transmission path

Details Transmission of charging signals on a data transmission path Transmission of charging signals on a data transmission path

2005-11-22

2005-11-22

Tran, Quoc (Department: 2643)

Telephonic communications

With usage measurement

Call charge metering or monitoring

C379S350000, C379S394000, C379S395000

Reexamination Certificate

active

06968049

ABSTRACT:
An apparatus for transmitting charging signals on a data transmission path having a line impedance includes a driver device for setting a line voltage level that corresponds to the line impedance. The driver device is configured to provide, in response to a driver input voltage level, a driver output current and a driver output voltage level. A current detection unit provides a current signal indicative of the driver output current and a current signal matching unit receives the current signal from the current detection unit and adjusts a level of the current signal for further processing by a filter device and by a regulation device. A matching filter unit then matches the driver device to a data transmission path unit.

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