Telephonic communications – Subscriber line or transmission line interface
Reexamination Certificate
2005-12-06
2005-12-06
Tieu, Binh K. (Department: 2643)
Telephonic communications
Subscriber line or transmission line interface
C379S093060, C379S093080, C379S413020
Reexamination Certificate
active
06973180
ABSTRACT:
A method of handling telephone signals supplied by an analog telephone set and data supplied by a data terminal in a subscriber line circuit of a digital telephone switching system used at least in subregions for data transmission includes directly connecting a telephone set and a data terminal with a modem to the digital telephone switching system through a common analog subscriber line, at least one of subjecting data supplied by the data terminal to a sampling operation at a sampling rate above a sampling rate required for telephone information during analog/digital conversion and coding sampling values representing data supplied by the data terminal according to a linear characteristic during analog/digital conversion, and feeding data originating from and handled by the data terminal directly to a data transmission network. A subscriber line circuit for handling telephone signals supplied by an analog telephone set and data supplied by a data terminal is also provided.
REFERENCES:
patent: 4642805 (1987-02-01), Dumas et al.
patent: 5671251 (1997-09-01), Blackwell et al.
patent: 5889856 (1999-03-01), O'Toole et al.
patent: 5943365 (1999-08-01), Long et al.
patent: 6052409 (2000-04-01), Quirk et al.
patent: 6341360 (2002-01-01), Abdelilah et al.
patent: 6366565 (2002-04-01), Betts
patent: 6381267 (2002-04-01), Abdelilah et al.
patent: 6389064 (2002-05-01), Dholakia et al.
patent: 6421320 (2002-07-01), Betts
patent: 6487243 (2002-11-01), Hwang et al.
patent: 6505222 (2003-01-01), Davis et al.
patent: 6553518 (2003-04-01), Ware et al.
patent: 6584078 (2003-06-01), Betts
patent: 6661837 (2003-12-01), Abdelilah et al.
patent: 6665336 (2003-12-01), Abdelilah et al.
patent: 6694015 (2004-02-01), Byers et al.
patent: 6728347 (2004-04-01), Huschmann et al.
patent: 6804267 (2004-10-01), Long et al.
patent: 6901142 (2005-05-01), Peters et al.
patent: 2002/0191702 (2002-12-01), Hoefer
patent: 0 503 528 (1992-09-01), None
patent: WO97/50230 (1997-12-01), None
Kunisch Paul
Rudolf Hans-Werner
Greenberg Laurence A.
Locher Ralph E.
Siemens Aktiengesellschaft
Stemer Werner H.
Tieu Binh K.
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