Abstract: A DSX system for receiving removable jack inserts is disclosed. The system includes a plurality of chassis rearward facing cross-connect arrays and rearward facing IN/OUT arrays. A first circuit board section and a second circuit board section are electrically connected to the arrays. The first circuit board section is positioned behind the removable jack inserts. The second circuit board section is positioned behind the first circuit board section and in front of the cross-connect array and the IN/OUT array.

Abstract: A DSX system for receiving removable jack inserts is disclosed. The system includes a plurality of chassis rearward facing cross-connect arrays and rearward facing IN/OUT arrays. A first circuit board section and a second circuit board section are electrically connected to the arrays. The first circuit board section is positioned behind the removable jack inserts. The second circuit board section is positioned behind the first circuit board section and in front of the cross-connect array and the IN/OUT array.

Abstract: A DSX system for receiving removable jack inserts is disclosed. The system includes a plurality of chassis rearward facing cross-connect arrays and rearward facing IN/OUT arrays. A first circuit board section and a second circuit board section are electrically connected to the arrays. The first circuit board section is positioned behind the removable jack inserts. The second circuit board section is positioned behind the first circuit board section and in front of the cross-connect array and the IN/OUT array.

Abstract: A DSX system arranged to receive a plurality of high-density chassis is disclosed. The chassis include back planes having rear access IN/OUT fields and rear access cross-connect fields. The rear access fields are electrically connected to termination panels located in respective IN/OUT regions and cross-connect regions. Each of the regions includes cable management channels within which system cables are routed.

Abstract: An equipment mounting rack is composed of a seismically sound skeleton structure having spaced vertical uprights supplemented by distinct spaced equipment mounting structures attached to that skeleton structure and extending along these vertical uprights and constituting side wall structures of a mounting rack interior space. The distinct spaced equipment mounting structures may have elongate first sections extending along the spaced vertical uprights, and elongate second sections extending along these first sections and constituting side wall structures of a mounting rack interior space. Cabinet walls may be attached to the skeleton structure, and the equipment mounting structures may constitute inside such cabinet walls side wall structures of a mounting rack interior space. The vertical uprights advantageously are reinforced by elongate partial enclosures that may avoid the need for a large number of weakening mounting holes in these uprights.

Abstract: An equipment mounting rack is composed of a seismically sound skeleton structure having spaced vertical uprights supplemented by distinct spaced equipment mounting structures attached to that skeleton structure and extending along these vertical uprights and constituting side wall structures of a mounting rack interior space. The distinct spaced equipment mounting structures may have elongate first sections extending along the spaced vertical uprights, and elongate second sections extending along these first sections and constituting side wall structures of a mounting rack interior space. Cabinet walls may be attached to the skeleton structure, and the equipment mounting structures may constitute inside such cabinet walls side wall structures of a mounting rack interior space. The vertical uprights advantageously are reinforced by elongate partial enclosures that may avoid the need for a large number of weakening mounting holes in these uprights.

Abstract: A non-invasive testing system for video signals includes a jack having a monitor conductor connected across an amplification circuit to a central conductor. The amplification circuit amplifies the power of a signal drawn off of the central conductor such that the power level at the monitor conductor is substantially equal to the power level on the central conductor. When it is desired to test a power level of a signal being produced by a video source, test equipment is connected to the monitor conductor to permit non-invasive testing of the signal.

Abstract: A card is provided for insertion in a telecommunications chassis. The card includes two sets of ports each having tip and ring contacts. The normal springs of the first set are electrically connected to normal springs of the second set.

Abstract: A jack module including a switching jack subassembly and monitor jack assembly includes a printed circuit board between the subassemblies. The subassemblies and circuit board are commonly housed. The printed circuit board contains monitor circuitry. The monitor circuitry is an inductive monitor with redundant windings.

Abstract: A jack module including a switching jack subassembly and monitor jack assembly includes a printed circuit board between the subassemblies. The subassemblies and circuit board are commonly housed. The printed circuit board contains monitor circuitry.