Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of hybrid or echo suppressor or canceller
Patent
1989-02-16
1989-11-07
Schreyer, Stafford D.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Of hybrid or echo suppressor or canceller
379 6, 379223, 370 321, H04B 320
Patent
active
048797383
ABSTRACT:
A device for establishing a desired operator audio level in an operator position means, is disclosed, comprising a processor means for processing digital signals for generating a desired receive audio level in an operator position means for use by an operator, conversion means for converting analog speech transmit signal from a telephone transmit means to digital for input to said processor means and for converting digital receive signal from the processor means to analog receive signal for input to a telephone receive means, and means for connecting the processor means to a telecommunications network. The processor means includes control means for the operator for permitting the operator to modify the desired receive audio level.
REFERENCES:
patent: 4445002 (1984-04-01), Terry
patent: 4484322 (1984-11-01), Fossati
patent: 4602133 (1986-07-01), O'Neill
patent: 4677609 (1987-06-01), Piereth
patent: 4825459 (1989-04-01), Farrow et al.
Northern Telecom Limited
Schreyer Stafford D.
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