Etat Francais Represente Par Le Ministre Des Postes Et Telecommunications

Jean Thiennot

An optical fiber cable transmission apparatus includes repeater-interchanger modules each of which includes at least one interchange module or pair of drop and insert switches. The module is such that a drop switch and an insert switch are provided between a line input and a line output with the second input of the insert switch coming from a buffer memory. Both switches are controlled by a common synchronizing circuit. A symmetrical arrangement is provided for the other drop and insert switch. Transmission takes place at a high data rate, and the interchange module serves to extract low data rate segments from each frame relating to a first stream and to replace them with same data rate frame segments relating to another stream. This arrangement makes it possible to distribute an 'underwater multiplexing' function, i.e. to reconfigure traffic over a plurality of such repeater-interchangers.

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Gif-Sur-Yvette, France

Jean Thiennot