Multiplex communications – Duplex – Transmit/receive interaction control
Patent
1996-12-30
2000-08-29
Pham, Chi H.
Multiplex communications
Duplex
Transmit/receive interaction control
370287, 379402, H04B 320, H04M 902
Patent
active
061118613
ABSTRACT:
A method and device for managing the communication of high speed analog data across a communications line. If the communications line is not authorized for communication of high speed analog data, line conditioning applied (e.g., at a digital line unit or subscriber line interface circuit) to the communications line is varied. The line conditioning may include echo suppression and/or hybrid balancing. If the line conditioning unit is a digital signal processor, the line conditioning is varied by varying coefficients or line types. If the line conditioning unit is a circuit, the line conditioning is varied by varying a control signal to a selection element of the analog circuit.
REFERENCES:
patent: 4742540 (1988-05-01), Schingh
patent: 4757527 (1988-07-01), Beniston et al.
patent: 5014306 (1991-05-01), Rodgers et al.
Codispoti Joseph S.
Pham Chi H.
Siemens Information and Communication Networks Inc.
Tran Maikhanh
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