Method and device to establish bidirectional and/or multidirectional communications between different persons grouped in different geographically distant locations connected to each other by telephone lines

摘要

the method permits the simultaneous transmission of a spatial multiplexing, signal words, and relevant.signals and signalling messages and signals between at least two stations (st1, st2) are interconnected by a private line (50).each station includes at least one communication unit and including a microphone (9), a badge reader (16) that identify a person.and a table (30) for the location of the stations in the same network by means of a display (32) composed of diodes33) and that the state of light indicates the status of each station in the network during a conference.;the invention applies in particular to communications between a parent company and its subsidiaries.