Abstract: A one-touch dial apparatus and method for registering dialing numbers in a telephone system includes a memory module divided into a plurality of memory blocks, each memory block having a number of memory locations, wherein each of the memory blocks is arranged for each of the corresponding telephones. When an intercom number for a subject telephone is generated from a source telephone, a memory block corresponding to the subject telephone having the intercom number is selected and each of the memory locations in the selected memory block is addressed sequentially. And then, a memory button is assigned to an addressed memory location and a dialing number is registered into the addressed memory location assigned to the memory button.

Abstract: A connector assembly for connecting two optical-fiber ribbons, each of which involves at least one optical fiber, is disclosed. The connector assembly includes a pair of connectors each of which is provided with a contact portion protruding from a leading end thereof and a plurality of through-holes into each of which the optical fiber is fitted, an alignment member provided with a central hole and a case having two pair of clamping members. The connectors are connected through the alignment member in such a way that the contact portions are, from both outsides to inside, fitted into the central hole to come in a face-to-face contact with each other. The connectors and the alignment member are inserted in the case and the opposite clamping members urge the connectors toward each other, thereby securely holding the connectors connected in position.

Abstract: A call processing method and apparatus for erasing a digit stored in memory in response to a "delete" signal generated by a caller station is disclosed. A protocol is provided for a switching system to recognize the "delete" signal as a command to erase a last stored input digit. In a telephone system, a subscriber's telephone is equipped with a "DEL" key to facilitate the generation of the "delete" signal to erase the last digit (e.g., a misdialed digit) that the switching system received during the process of dialing a telephone number from the caller station.

Abstract: A contact image sensor assembly for use in a facsimile comprises a scan roller and a contact image sensor to allow a manuscript to be passed therebetween during the rotation of the scan roller. The scan roller is rotatably mounted to a pair of side brackets having a slit, respectively, the slit having a roller fixing groove and a bent groove upwardly bent. A screw consists of a fastening portion fastened to a tap hole of the contact image sensor and an axle inserted into the slit. During the rotation of the scan roller, the axle of the screw is upwardly shifted along the bent groove while the contact image sensor is leftwardly biased by two springs, thereby automatically aligning with a desired scan point of the contact image sensor.

Abstract: A novel system includes a first interfacing unit connected to a sending subscriber for converting analog subscriber information transmitted from the sending subscriber via a first subscriber line to digital subscriber information to provide it to a first transmission line; a second interfacing unit connected to its corresponding receiving subscriber for reconverting the digital subscriber information on the first transmission line to the original analog subscriber information to transmit the same to the corresponding receiving subscriber via a second subscriber line; a switching module coupled between the first and the second interfacing units for switching the digital subscriber information on the first transmission line to the second interfacing unit; and a testing unit connected to the switching module, if the remaining components within the system excepting the first and the second subscriber interfacing units are all normal, for testing the status of each of a set of subscriber components to provide info

Abstract: A computer incorporates therein a control system for efficiently turning on and off a power supply on and off therein to control on-off operations of the computer. In the control system, a power detection signal is derived first based on a power selection signal generated when a power on/off key of the computer is actuated to control the on-off operations of the computer at a signal detector. And then, at a first generator, a first power control signal and a selection control signal are obtained from the derived power detection signal in response to a first mode control signal. Next, a second power control signal is derived from the power detection signal, the selection control signal and a second mode control signal at a second generator.

Abstract: An apparatus for molding a connector includes a stationary body, a moving body, a first and a second blocks detachably fixed to the moving body, and a core block having at least one core. The first block has at least one hole and the second block has at least one through-hole corresponding to the first hole. When the molding apparatus is closed, the stationary body, the moving body, and the first and the second blocks cooperate to define a cavity which will be filled with a molten plastic material and a leading end of the core fits through the through-hole of the second block and into the hole of the first block.

Abstract: A shelf frame for use in a rack for storing a communication system is provided with a first locking portion for locking a first front plate extending along one side of the frame, a second locking portion for locking a second front plate and opened outwardly and located behind and below and running parallel to the first locking portion, an ejector supporting portion opened downwardly and located behind and running parallel to the second locking portion, and for rotatably supporting a support portion of an ejector, and a clamping portion for clamping a guide rail located and extending along the opposite side thereof, thereby effectively shielding electromagnetic waves.

Abstract: An optical connector cleaner includes a cloth for cleaning a ferrule end surface, a casing for protecting the cloth provided with a portion for inspecting a ferrule end surface, a guide member arranged in the casing and formed with a plurality of various-shaped holes into which a ferrule can be inserted and moved therealong, and a unit of moving guide member, by which it is possible not only to accommodate and clean various shapes of the ferrule end surfaces, but also to inspect the cleaned ferrule end surface at optical connector junction job sites or in the manufacturing process thereof.

Abstract: A novel apparatus effectively processes signaling information to be communicated between an electronic switching system (ESS) and at least one other ESS. In case of transmitting a plurality of signaling information from one ESS to the other ESS's, a plurality of signaling data is first provided from corresponding user parts contained in the ESS to a signaling message handler wherein they are routed to corresponding signaling links. Next, at a signaling link processor, the status of all the signaling links formed between the ESS and the other ESS's and the status of each of the plurality of signaling data are checked and analyzed to generate information representing their status. Using the plurality of the signaling data and generated information, a corresponding number of signaling units are formed for the reliable transmission thereof. Finally, the plurality of signaling units are relayed to a block that interfaces and transmits each of them to the other ESS's.

Abstract: A shelf unit with a spring in a communication system includes a front plate having a fixing portion and a projecting portion with a recessed portion backwardly extended at both ends thereof, respectively, and a spring inserted into the projecting portion of the front plate. The spring having a substantial v-shaped configuration includes a plurality of spring members defined in a predetermined size at one side thereof and a body integrally formed at the other side thereof. Each of the spring members includes an elastic portion having a bending portion inwardly bent at an end thereof and a compressing portion provided within the elastic portion and inwardly bent relative to the elastic portion, thereby allowing the compressing portion to be tightly fitted into the recessed portion.

Abstract: An apparatus controls the operation mode of a time division switching device selected from two incorporated in an electronic switching system for reliability thereof. Mode information representing previous operation modes of the two time switching devices is received and processed to issue a first and a second mode control signals. Thereafter, status of each component in the selected switching device and a power from a power supply in the unselected switching device are analyzed to produce each component status information and power status information. Next, an initial duplexing control signal is obtained based on each component status information, the first and the second mode control signals, and the power status information.

Abstract: A core for use in a slot type optical cable has one or more regularly disposed slots. One or more ribbon fibers are stacked into each of the slots, each of the ribbon fibers having a plurality of optical fibers. A tensile strength member is disposed at a center of the core. Each of the slots has a convex bottom surface with a predetermined curvature so that voids between the ribbon fiber at the bottom of the stack and top of the convex bottom surface in each of the slots are formed on both sides of the convex bottom surface. The convex bottom surface is provided with curvature whose radius is equal to or less than a distance from the center of the core to edges defined by the convex bottom surface meeting the pair of side surfaces in each of the slots.