Electrical signal transmission equipment bay

An electrical signal transmission equipment bay comprising two parallel supporting beams having cable guide beams extending directly transversely of the supporting beams said cable guide beams being situated in the first vertical plane, and having cables, going into and out of the bay which are guided along the cable guide beams, said cables extending mainly parallel to said supporting beams inside the bay, the ends of a number of said cables being provided with a plurality of row connectors electrically connected to a plurality of plug-in signal processing boards, each of said plug-in signal boards positioned in one of a plurality of functional units situated in said bay, a plurality of positioning plates each one connected to a respective functional unit, successive first row connectors being situated on a positioning plate for a respective functional unit, a master printed wiring board which is connected to one of said positioning plates, and second row connectors which are connected to said one positioning plate and into which a signal processing board is plugged, wherein said supporting beams are provided with at least one mounting beam which extends transversely to the supporting beams and on which are positioned a number of coaxial connectors each connected to the end of one of said cables, said coaxial connectors cooperating, via a number of openings in a respective positioning plate, with a number of mating coaxial connectors which are provided on said signal processing boards in a respective functional unit, said at least one mounting beam being adapted for detachable suspension from said supporting beams during the positioning of said coaxial connections on said at least one mounting beam, and being adapted for subsequent rigid connection to said positioning plate prior to rigid connection of each of said positioning plates to said supporting beams.