| 摘要 |
1,162,394. Automatic exchange systems. TELEFONAKTIEBOLAGET L.M. ERICSSON. 2 Nov., 1966 [2 Nov., 1965], No. 49229/66. Heading H4K. In a system including a number of remote satellites individually connected by data links and speech channels to a computer controlled central exchange, some at least of the satellites are connected to each other, whereby in the event of a failure in a direct connection from one of the satellites to the exchange, data for this satellite can be routed via one of the other satellites. The data consists, for example, of cross-point operation instructions and each such instruction is preceded by the identity of the satellite for which it is intended and is sent over the direct data channel and also simultaneously via (part of) the alternative route. Normally, the intersatellite connections only carry synch. pulses and must be seized for use by the satellite having a faulty direct connection, whereby the simultaneous data appearing at the nearest non-faulty satellite can be directed on to the correct intersatellite connection. |
