Coordinated multiple telephone station system

Details Coordinated multiple telephone station system Coordinated multiple telephone station system

1986-05-30

1987-12-22

Lev, Robert

Telephonic communications

Telephone line or system combined with diverse electrical...

Credit authorization

379 93, 235380, 235381, H04M 157

Patent

active

047150610

ABSTRACT:
A system incorporating a cluster of several telephone stations or terminals to interface with one or more frequently called remote data stations for economy of dial-up connection in accommodating communication with multiple terminals of the cluster during a single call to a remote station. With a call from one terminal to a remote data station, a transmit-receive unit interfaces the cluster with the data station setting the terminals in the cluster in a polling sequence to accommodate additional communications. The system preserves an "off-hook" state polling the individual terminals in the cluster to accommodate further communication from the cluster terminals to the central data station. Polling is facilitated by a cluster counter in the transmit-receive unit coordinated with logic indicating the state of each terminal in the cluster.

REFERENCES:
patent: 3920908 (1975-11-01), Kraus
patent: 4439636 (1984-03-01), Newkirk et al.
patent: 4521644 (1985-06-01), Bernard, Jr.
patent: 4630200 (1986-12-01), Ohmae et al.
patent: 4634809 (1987-01-01), Paulsson et al.

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