Secure transmission of data on n normal channels and at least one security channel.

摘要

The invention relates to a method of transmitting PROTECTED DATA N CHANNEL Standard (3), not less than 1N, and at least an emergency channel (4) between a terminal station EMISSION (1) and a TERMINAL docking station (2), comprising the data transmitted by PART USEFUL AND ELSEWHERE operating data. According to the invention TERMINAL broadcasting station (1) are carried out the following steps SUCCESSIVE: IN EACH OF THE N CHANNELS NORMAL, multiplexed the user data and operating data USED ON ONE OF THE N pairs of inputs; And then route the data multiplexed N CHANNEL ONE OF THE ORDINARY, NORMAL CALL CHANNEL succored, TOWARDS the emergency channel. IN THE TERMINAL STATION LOBBY (2) perform the following successive stages: the multiplexed data are switched EMERGENCY CHANNEL WITH NORMAL multiplexed channel data succored; And then ON EACH OF THE NORMAL CHANNELS N, the user data are demultiplexed AND OPERATING DATA FOR THE PURPOSE OF THEM AVAILABLE IN ONE OF THE N output pairs