Method for establishing conference connections in dial-operated

Details Method for establishing conference connections in dial-operated Method for establishing conference connections in dial-operated

1975-12-22

1977-05-31

Robinson, Thomas A.

Telegraphy

Systems

Automatic

179 18BC, H04L 1100

Patent

active

040270980

ABSTRACT:
A method for operating dial-operated telecommunication exchanges equipped with broadcast devices to make conference connections is described. Responsive to signals emitted from a calling subscriber, a conference switching device assigned to the broadcast device is activated; the conference switching device completes the connection in accordance with the switching information contained in the aforementioned signals. The connection is completed as a conventional conference connection in which all participating called subscribers receive all transmitted messages, as a semi-conference connection wherein messages transmitted by each called subscriber are received only by the calling subscriber or as a sub-conference connection wherein messages transmitted by the calling subscriber are received only by a specific called subscriber and messages transmitted by the latter are received only by the calling subscriber.

REFERENCES:
patent: 3504130 (1970-03-01), Gorgas et al.
patent: 3515807 (1970-06-01), Clark
patent: 3697672 (1972-10-01), Reisch
patent: 3912874 (1975-10-01), Botterell et al.

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