| 摘要 |
<p>System for transmission between secondary stations and a central station via the wires of a network able to transmit electrical signals. The system comprises a synchronising signal generator (10) connected to the network (3), a call signal generator (11) also connected to the network (3), an information generating (6) activating arrangement (8) in each secondary station (1) in order to activate this generator on detection of a specific number of synchronising signals from the station subsequent to the detection of a call signal, and a reception arrangement (12) which is combined with the central station (2) and which stores the information furnished by the secondary stations in succession. The invention relates to information transmission by networks other than specialised networks for telecommunications. <IMAGE></p> |
