Abstract: A digital signal cross-connect having a relatively high digital signal transmission rate for use with telecommunications transmission networks mountable in an existing network bay frame designed for mounting digital signal cross-connects having substantially lower signal transmission rates comprises a housing having at least a top panel and a bottom panel. A mounting tang is disposed on the top panel, and a mounting notch is located on the bottom panel. The mounting notch is capable of accepting rail tangs of a shelf which in turn mounts to on the network bay frame. The cross-connect is capable of pivotal movement about the rail tangs when the rail tangs are disposed in the mounting notch, and the mounting tang is capable of releasably engaging a rack rail on the shelf.

Abstract: A modular distribution frame assembly for carrying telephone line terminal and protection blocks in a substantially factory-prewired condition. The frame has a base for securing to a floor support and a telescopic upper end for securing to an overhead support. The protection blocks are mounted on one side of the frame in a vertical array. The line terminal blocks are mounted on the other side of the frame in horizontal arrays. The frame includes horizontal channels which open only to the side on which the terminal blocks are mounted. The arrays of terminal blocks are mounted above and below each channel. Any one of the protection blocks may be connected to any one of the terminal blocks in one of the arrays. The horizontal channel may be used to receive wires which are used to jumper between the array of line terminal blocks which are connected to the protection blocks and the other array of terminal blocks mounted adjacent the channel.