Abstract: An optical connector for coupling pairs of optical fibers. The connector comprises a multi-part housing accommodating two pin holders. Each pin holder encloses one or three pins which enclose an elongate duct for accommodating one end of an optical fiber. The pins are aligned with respect to each other by means of a coupling bushing. A set of pins projects beyond a first housing part and is protected by a protective cap which is detachably mounted on the housing part and which projects beyond the end of the set of pins. A coupling bushing is arranged on the pins inside the protective cap. A collar formed on the protective cap keeps the coupling bushing in position. The protective cap also serves for precentering during the assembly of the connector. To this end, the protective cap forms a smooth fit with a recess in a second housing part within which the second, mating pin holder is accommodated.

Abstract: An electrical signal transmission equipment bay, comprising a number of ingoing and outgoing cables (81, 15) which are connected, by means of relevant row connectors (79) and coaxial connectors (61) to signal processing boards (19, see FIG. 3) contained in the functional units (25). The coaxial connectors (61) are prepositioned during mounting in openings (59) of a displaceable mounting beam (47) which is subsequently secured to a positioning plate (35) which comprises openings (63) wherethrough the coaxial connectors (61) are inserted. Subsequently the positioning plate (35) is rigidly connected to the supporting beams (1, 3) in the bay. The bay is particularly suitable for use in telephone exchanges. (FIG. 2).