Abstract: The invention relates to a method and a device for coupling fibre optic cables. Said device comprises at least one module, which is equipped with at least one retaining unit for retaining at least two cassettes. The invention is characterised in that: a cassette is configured with at least one coupling element; at least one strand bundle can be fixed to the module, whereby said strand bundle can be split into at least two strands comprising at least one fibre optic cable; an excess length of strand can be retained by a cassette, the fibre optic cable or cables being connected to the coupling element and the cassette together with its retained strand being detachably connected to the retaining unit.