Method and circuit arrangement for controlling a subscriber...

Details Method and circuit arrangement for controlling a subscriber... Method and circuit arrangement for controlling a subscriber...

2007-02-27

2007-02-27

Swerdlow, Daniel (Department: 2615)

Telephonic communications

Subscriber line or transmission line interface

Circuitry to provide a coder and decoder function

C379S413000, C379S207150

Reexamination Certificate

active

10639357

ABSTRACT:
The invention provides a method for controlling a subscriber line interface circuit, which is connected to at least one data line and to at least one subscriber line associated with a subscriber, in the on-hook state, having the following steps: on-hook data transmission signals are detected in the data line; if an on-hook data transmission signal intended for the subscriber (102) is detected in the data line (122), the detected on-hook data transmission signal is buffer-stored and the subscriber line interface circuit (106) is switched from a passive operating mode to an active operating mode; the buffer-stored detected on-hook data transmission signal is transmitted by the subscriber line interface circuit (106) in the subscriber line (104) to the subscriber (102); and the subscriber line interface circuit (106) is switched to the passive operating mode. The invention also provides a circuit arrangement for carrying out the method.

REFERENCES:
patent: 4709388 (1987-11-01), Defretin
patent: RE35582 (1997-08-01), Pariani et al.
patent: 6590977 (2003-07-01), Taguchi
patent: 6687348 (2004-02-01), Cromer et al.
patent: 6697482 (2004-02-01), Martinez Acedo et al.
patent: WO 99/27703 (1999-06-01), None
German Office Action dated Jun. 6, 2003.

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