Abstract: A drawer for a fibre management cabinet has a number of splice cassettes mounted on it by means of hinges. Each cassette hold a single splice. Fibres leading into a splice cassette are fed through the hinges of that splice cassette.

Abstract: In order to allow an optical cable to be accessed by spur cables at various points along its length after it has been laid, connection housings are provided at intervals along its length. A loop of the main cable is passed into each housing so that at a later date there is an excess of cable to enable connections to be made to it. Each housing contains fittings such as manifolds and organizer trays where the optical fibers are spliced and includes several access ports which are covered over until it is required to connect a spur cable to the main cable.

Abstract: A junction box for linking a first optical communications cord with two or more second optical communications cords, includes a sealable, flat housing having internal formations for organizing optical fibres; terminals, preferably glands, along one edge of the housing for connection to the first and/or second optical communications cords; passive optical components including a 1.times.2 fiber-optic coupler all interconnected by internal optical fibres with the terminals, the internal fibres all being organized together in a single loop parallel to the major faces of the housing; and clamps along the inside of at least one different edge of the housing between the loop and the edge wall of the housing, retaining the passive optical components.

Abstract: A support assembly for non-metallic cable incorporating a metallic support fitting and a preformed metallic stress limiter, the latter including a generally mushroom-shaped hollow body having a tubular stem portion inserted between one end of the support fitting and the cable, and a generally part-toroidal head portion having an outer profile which is smoothly curving.

Abstract: A distribution frame for an optical fibre transmission system comprises a cabinet incorporating at each side at least one side panel supporting a surplus length of cable, a pair of inner panels spaced from the side panels and organizer trays, arranged to accommodate surplus lengths of fibres from the cables, supported between the inner panels, the latter panels also supporting couplers for enabling the cable fibers to be connected to further fibres, the ends of which are accommodated in the spaces between the inner and side panels.