| 摘要 |
The invention concerns a radio-relay station made compatible with the transmission of any selected group among a group of plesiochronous signals with multiplexer (SE1, SE2, SE3) with substantially mutually multiple speeds, so as to include in the station programmable circuits common to the groups, independently of the multiplex signal speed resulting from the multiplexing. A frame of predetermined duration is formed by synchronising the plesiochronous signals in the selected group into syncchronous signals (SY1, SY2, SY3) with mutually multiple speeds, by assigning to each synchronous signal a number of patterns of predetermined structure in the frame equal to the whole part of the quotient of the division of the synchronous signal by the smallest speed of the plesiochronous signal, and by inserting into each pattern bits of the respective synchronised signal in predetermined number and supplementary bits (BS) in predetermined number.
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