Multiplex communications – Wide area network – Packet switching
Patent
1985-05-28
1987-04-07
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370112, 379202, H04Q 1104, H04J 302, H04M 300
Patent
active
046566252
ABSTRACT:
A switching system having a capability for telecommunication conferences, including therein, at least, a speech path memory, a mixing circuit, and a feedback circuit. The speech path memory is operative to store therein voice data signals provided from subscribers holding a conference. The mixing circuit is operative to mix two voice data signals. The feedback circuit is operative to feed the thus mixed voice data signals back to the speech path memory to accumulate therein each set of the mixed voice data signals for the subscriber's subscriber except each own voice data signal, whereby the subscribers receive respective accumulated voice data signals.
REFERENCES:
patent: 3882280 (1975-05-01), Goutmann
patent: 4244046 (1981-01-01), Brovard
patent: 4309572 (1982-01-01), Mori et al.
patent: 4393496 (1983-07-01), Zeitraeg
Murakami Koso
Nojiri Shoji
Ogawa Ken-ichi
Fujitsu Limited
Olms Douglas W.
Scutch III Frank M.
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