Abstract: A telecommunications shelf module is provided having electronic circuit packs and conductors extending from the circuit packs to an interface station for connection to conductors exterior of the pack, the module detachably mountable in a frame. The module preferably has a cooling arrangement included in its structure.

Abstract: Insulation displacement terminal member having cantilever spring contact members which are spaced-apart to receive a conductor between them. Each contact member has an outward projection for engagement with the wall of a cavity of a connector housing to prevent undue movement apart of the members when a heavily insulated conductor is forced between them under extremely cold conditions. Ideally, the projections are convex to permit a rolling action upon the cavity wall.

Abstract: An insulation displacing terminal has opposed cantilever spring contact members having two portions, lower and upper. The lower portions have their outer edges inclined upward and inward to give a first tapered portion. The upper portions have the outer edges inclined upward and outward to give second tapered portions. The upper and lower portions join at a neck or narrow section. The upper portions are of reduced thickness relative to the lower portions, the reduced thickness starting just above the neck section.

Abstract: A connector, for use for connection of local conductors to a distribution cable, in telephone systems, has an elongate body in which are a plurality of recesses. Insulation displacing terminals are positioned in the recesses, the lower part of each terminal connecting to a cable conductor. Connector members are pushed into the recesses by a trapped screw in each connector member. Local conductors are inserted into transverse passages or bores and as a connector member is pushed down, the top ends of the terminals pass up into the connector member and make contact with the conducitve cores of the conductors.