Abstract: A system for transmitting video signals from multiple video cameras over one or more multiple pair, twisted pair cables includes several video cameras and a plurality of twisted pair-to-coax balun “T” devices connected to the video cameras by coaxial cables. The video cameras generate unbalanced video signals. The twisted pair-to-coax balun “T” devices are connected together in a “daisy chain” fashion by electrical cables having multiple twisted pairs of wires. The balun “T” devices convert the unbalanced video signals from the cameras to balanced video signals. The balanced video signals are transmitted over the multiple pair, twisted pair cables to a hub, which provides the video signals to one or more monitors, a DVR, a multiplexer or other device.

Abstract: A protected midspan power sourcing equipment for a local area network communications system includes a network connection subsystem that is connectable to at least one first network cable having a plurality of electrical wires, and a powered equipment connection subsystem that is connectable to at least one second network cable also having a plurality of electrical wires. The at least one second network cable is commumncatable with a powered end station of the LAN communications system and provides power signals and voice and data signals to the powered end station. A power source is connected to the second network cable and the powered equipment connection subsystem and generates the power signal that is provided on the at least one second network cable to the powered end station.

Abstract: A video surveillance system includes a first combiner, and a monitor, a power source and a camera control unit, each of which is electrically coupled to the first combiner. A regulated combiner located remotely from the first combiner and being electrically connected to the first combiner with at least one twisted pair of wires includes a voltage regulator which provides a regulated voltage to the camera located remotely from the first combiner. The camera is operable at a predetermined voltage level. The power supply provides an increased voltage to the regulated combiner through the first combiner and the twisted pair of wires to compensate for IR losses in the twisted pair of wires. Thus, the regulated combiner reduces the increased voltage to a safe level for the CCTV camera and other devices on a network to operate properly. The system dramatically increases the distance that a power supply can be located from where the camera is located, which decreases installation costs for CCTV surveillance systems.

Abstract: A connector module permits termination of cross-connect wires on one surface (front) and cable wires on an opposite surface (rear). The module exhibits a configuration, which permits test access and protector (i.e., protection module) mounting from the front surface. The jumper wires are inserted from a side surface through wire guides or channels that bring the wires from the side surface to the front surface where the wires can be terminated without impeding insertion and removal of protection modules from the front of the connector module. There is an intermediate surface below the front surface that is accessible from the front and recessed to allow protection modules to be installed completely below the terminated wires, allowing termination and maintenance of jumper wires after the protection module is installed from the front.

Abstract: A modular distributing frame for supporting telephone connector blocks for single person front jumper administration. The connector blocks are mounted in vertical columns having vertical troughs on both sides. Horizontal troughs are located at the top, bottom and an intermediate location while being in the same plane as the vertical troughs.