Multiplex communications – Wide area network – Packet switching
Patent
1987-06-01
1988-07-12
Pellinen, A. D.
Multiplex communications
Wide area network
Packet switching
H04Q 1104, H04M 356
Patent
active
047574933
ABSTRACT:
Multi-party conferencing apparatus for use in a pulse code modulated, time division multiplexed telephone communication system including a data bus on which operating times are divided into equal frames of time and each channel of a plurality of channels has a transmit time slot and a receive time slot in each time frame. Voice signals on conferencing channels are sampled in each time frame and compared in the conferencing apparatus with the highest amplitude sample being rturned to all conferencing channels except the channel on which it originated and a second highest amplitude sample being returned to the channel originating the highest sample.
REFERENCES:
patent: 4360910 (1982-11-01), Segal et al.
patent: 4387457 (1983-06-01), Munter
patent: 4388717 (1983-06-01), Burke
patent: 4475190 (1984-10-01), Marouf et al.
patent: 4495616 (1985-01-01), Shuh
patent: 4566096 (1986-01-01), Sarson et al.
patent: 4635252 (1987-01-01), Kuchler
Moret Bernard
Yuen Ki S.
Barbee Joe E.
Evans Geoffrey S.
Motorola Inc.
Parsons Eugene A.
Pellinen A. D.
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