Abstract: A sealed cable joint box has a body closed by a lid, cable apertures between the body and the lid, a first flexible and deformable seal for sealing the cables in each aperture and a second flexible and deformable seal between the body and the lid, this second seal being rendered discontinuous by the apertures and formed of independent segments between the apertures. Each segment of the second seal has each of its terminal portions embedded in the first seal in the aperture at this level and has a greater hardness than the first seal.

Abstract: A connection strip for high data rate lines includes an elongate insulating body and two rows of successive sets of insulation-displacement contacts mounted in the body so that they face one another. The connection strip includes a single one of the end contacts of each set, assigned to constituting a grounding screen referred to as a grounding contact in the set, and a grounding collector connected to an external ground, and provided with tongues connected to the various grounding contacts inside said body. Application to connecting 100 Mhz lines.

Abstract: An optical fiber splice tray is in the form of two tray members that assemble together. The tray includes coiling arrangements, butt joint splice fixing arrangements and optical cable receiving arrangements. The coiling arrangements and butt joint splice fixing arrangements are carried by one of the two tray members. The optical cable receiving means are carried by the other tray member. This other tray member further includes branch connection splice fixing arrangements.

Abstract: A device for holding at least one optical fiber cable includes one fastening support per cable. The device including a cylindrical thimble inside which a plurality of identical fastening supports can be mounted once the corresponding cables are held stationary on them, an end wedge fixed to each support inside said thimble and locked in an open front end of said thimble, and a sealed closure for closing the rear portion of the thimble in sealed manner around each cable. Application to splice boxes.

Abstract: The multiferrule for connecting optical fibers together has a series of internal capillary channels of transverse dimensions that are defined to leave substantial clearance for the fibers, at least in the two end portions of the channels where they open out into two end faces of the multiferrule. The multiferrule further includes middle necking in which the corresponding middle portions of the channels have their transverse dimensions reduced so as to leave only minimal clearance for the fibers, to enable them to be put into contact and connected together directly in this location. The multiferrule is applicable to making an optical fiber connector.

Abstract: The method of arc welding optical fibers includes a fusion and inter-penetration first step during which the ends subjected to the arc are fused and caused to inter-penetrate, and an alignment second step so as to continue the fusion under the control of the offset that is calculated on the basis of an image of the ends, which are not externally illuminated. The first step is an arc current control step performed in successive current increments, under the control of the brightness taken on by the ends after each increment.

Abstract: A splice box for splicing together optical-fiber cables includes a box body provided with side accesses for the cables, and fastening base-plates for fastening said cables, the base-plates being removably fixed to a support inside the body. Each access serves to receive a plurality of cables that are held stationary on their respective base-plates, and said base-plates are superposable inside the box body and facing a common access.

Abstract: The push-in connecting piece has at least one pair of elongate members integral with an actuating head and pierced in line with an insertion hole for an insulated wire and is fitted to slide over at least one insulation displacement contact. Each elongate member of the push-in piece has a slit made in the insertion hole thereof and directed towards the head, for gripping the insulated wire.

Abstract: A hermaphrodite contact, flat and substantially rectangular in shape, including at least one resilient terminal arm and a "main" insulation displacement fork, wherein the main insulation displacement fork opens out towards the terminal end portion of the resilient arm.

Abstract: The invention concerns a disconnectable male connector for a communications network including connecting means between wires (43) corresponding to the lines of a communications cable (44) and the terminals of a female connector which are connected to the lines of the communications network when the male connector is inserted in the female connector and means (41) for locking the male connector to the female connector, wherein said connection means (46, 81, 100) and said locking means (41, 80) can separate if the cable (44) is pulled. Applications include the integrated services digital network.

Abstract: The cassette is mounted horizontally or vertically on a support rail and defines a front action face. One of its compartments is used for storing an excess length of optical cable while its other compartment is used for storing an excess length of optical jumper. The cassette includes a fixed first connection for the cable conductor and a removable cross-connection second connection for the jumper, said connections being mounted separately, substantially on the front action face, and being interconnected by an optical lead which is wound down together with the cable conductor and in the same compartment. The cassette is applicable to a distribution frame for telephones or computers.