Multiplex communications – Wide area network – Packet switching
Patent
1986-06-26
1988-06-07
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
H04J 308
Patent
active
047501669
ABSTRACT:
A conferencing module, for conferencing two PCM words uses threshold detectors (7, 8) to assess whether the word represent signals above a preset threshold, plus a comparator (1) to determine the larger signal. One or other is switched by an electronic switch (5) to the output by control logic (4) as follows:
REFERENCES:
patent: 4274155 (1981-06-01), Funderburk et al.
patent: 4535445 (1985-08-01), Lane et al.
patent: 4644530 (1987-02-01), Phiet
Illman Stephen M.
Sharpe Martin
Jung Min
Olms Douglas W.
STC PLC
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