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Fig. 15X82352- and 3-way U-links (type RPV 153), correspondingpatch cord plugs (type RPV 171), andtheir component partsupper panel carries a number of coaxial U-links; two plastic dummy insertscan however be seen in the centre of the panel. The lower panel providesoutlets for bay and station trunks, with lamps for indicating when engaged,etc. The panels can be provided with a cover plate.Cover PlatesMainly for aesthetic reasons, the front of the bay is equipped with coverplates except where there already is an enamelled front panel or wheremaintenance requirements introduce difficulties.The cover plates are held in place by brackets on the bayside test blocks,and when removed can easily be stacked. In the left-hand edge they eachhave a slot which slips under a stud on the test block bracket, while on the rightthere is a snap fastening (see fig. 8).Plates entirely cover the rear of the bay.Connectors and AccessoriesThe new mechanical design has also involved new designs of connectors,patch cords, fuses and other accessories. A few examples only of this arebriefly described below.Flat-contact Plugs and SocketsTo provide a flexible arrangement for unscreened connexions, gold-platedfork-shaped socket contacts are universally used; these together with someexamples of their application can be seen in fig. 14. Flat-contact U-linksand plugs designed to mate with these sockets are shown in fig. 15.Fig. , 6 x 2530 The connectors have in all cases been made irreversible by differences inPlug-in pad (type RF.R 424) and its mechanicalcomponents124the Wldth a n d distanCebetWeenalso fit this type of socket.contacts. The plug-in pads shown in fig. 16