Corning Cable Systems

Ccs Holdings, Inc.

Barry G Slotnick

John Joseph Napiorkowski

Chanh C Vo

Casimir Z Cwirzen

Andreas Guenther

Metal oxide varistors (MOVs) are employed in surge protection devices, such as overvoltage protection devices, between a pair of signal lines and ground to reduce the capacitive imbalance introduced by the overvoltage protector, thereby improving higher frequency transmissions over twisted-pair telephone lines. The MOVs are sorted into subgroups having a capacitive tolerance of no more than about 1.0 picofarad. MOVs with asymmetrical electrodes can also be sorted to reduce both the capacitance and the capacitive tolerance of the MOVs. The sorted MOVs can then be electrically connected in parallel with a gas discharge tube on each signal line to produce an overvoltage protection device, for example a station protector for use at a customer premises, having a capacitive imbalance that does not exceed about 1.3 picofarads. The use of asymmetrical electrodes reduces the capacitance of the sorted MOVs to less than about 30 picofarads.

Method and apparatus for balancing capacitance in hybrid overvoltage protection device

A splitter assembly is provided that comprises a terminal block for mounting to a main distribution frame and a splitter circuit for combining/splitting POTS signals and xDSL signals onto/from a single wire pair. The terminal block is pivotally mounted to a housing and the splitter circuit is on a card that is located in the housing. The terminal block may be mounted to the same housing that contains the splitter card. The POTS line contacts, xDSL line contacts and combined line contacts of the splitter circuit are connected to respective pairs of terminals in the terminal block.

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Plano, TX, United States of America

Barry G Slotnick