Class 379/17 - Of switching selector

Subclass of Class 379 - Telephonic communications
Definition: Subject matter for testing a device which selects a branch
No. of patents: 25
Last issue date: 08/15/2006

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Number	Title	Issue Date
7092947	Browser on test equipment A portable telecommunication test set, such as a telephone line butt set, with a web browser incorporated therein. A standard HTML (Hyper Text Mark-up Language) or WAP (Wireless Application Protocol) browser may be incorporated within the portable test set, allowing...	08/15/2006
7035380	Line sharing multipoint POTS splitter with intelligent termination The present invention provides for a system and method for blocking leakage signals and uncoupling connections in a communication system. A leakage signal (LS) blocking splitter employs a high-pass filter which effectively blocks the lower frequency leakage signal. ...	04/25/2006
6771740	Line sharing multipoint pots splitter controllable line selector The eavesdropping prevention system and method of the present invention provides a controllable line selection unit which couples a receiver and a transmitter to a selected one of a plurality of subscriber loops according to the current channel of a time-multiplexed...	08/03/2004
6741848	Method and system of offering wireless telecommunication services in a visited telecommunication network A method and system of offering wireless telecommunication services in a visited telecommunication network for a terminal device which does not have a first identifier accepted by the network. In the method, the visited network gives the terminal device a right to a...	05/25/2004
6577710	Method for checking a switching center, line unit and switching center for implementing the method, as well as an appertaining computer program A method for checking a switching center is explained, whereby reference data are checked in the memory of the switching center. On the basis of status data, a processor determines the operational status of programs, which utilize the reference data (step...	06/10/2003
6549610	Subscriber circuit having splitter disconnection function A subscriber circuit allowing a reliable and proper subscriber line test is disclosed. The subscriber circuit includes a splitter and a feeder for feeding a current to subscriber equipment through a subscriber line. A path selector is provided to select o...	04/15/2003
6282266	Concentrated dynamic test path rooting A system in accordance with the invention dynamically establishes test connections upon initiation of a test sequence and does not need to maintain permanently "nailed up" test connections. To do so, each node in the system, e.g., COT, RT, maintains a log...	08/28/2001
6259768	Method of, and apparatus for, carrying out loopback test in exchange A method employs simple procedures to speedily carry out loopback tests on devices that form a channel system of an exchange. The method is capable of quickly locating a fault in the exchange and allowing speedy maintenance work of the exchange. Also prov...	07/10/2001
5940478	Method and system for extended addressing plans Communications system (10) that includes a network hub system (12), (14) and (16) connectable to external voice messaging systems (24), (26), (28), (30), (32), (34), (36), (40), (42) and (44). The network hub system (12), (14) and (16) includes a database...	08/17/1999
5621782	Test interface adapter emulating on test trunk interface for non-standard central office switch A test interface adapter allows a line-conditioning or test device, such as a direct access test unit (DATU), that is normally interfaced with a standard central office switch via a no-test trunk, to be coupled to and communicate with the respective ports...	04/15/1997
5596623	Testing and complaint accepting communication unit A communication box which operates as a testing and complaint accepting communication unit and which is connected with a workstation which can communicate with a call processor for controlling a digital switch module includes a subscriber line interface c...	01/21/1997
5579368	Device for monitoring a switch A switch sentry device (22) having a digital telephony switch (SCX, 16), a device (24) for processing information, a device (24, 34) for simulating a call from the processing device (24) to the switch (SCX, 16), a device (SCX, 16) responsive to the call s...	11/26/1996
5392328	System and method for automatically detecting root causes of switching connection failures in a telephone network An operating system is provided for an analog switching machine having switch fabric formed by multiple line and trunk link networks having interconnected switch stages with each switch stage having multiple grid connections and makes post-connection cont...	02/21/1995
5386454	Remotely controlled multiple pair telephone pedestal/building terminal A remotely controlled telephone system terminal box provides non-blocking connectivity between any selected unassigned pair of a plurality X of distribution pairs of lines and any selected plurality Y of drop pairs of lines and employs a plurality X of mu...	01/31/1995
5384823	Telecommunications switch with integral feature installation capability The operating system control device in a telecommunications switch is capable of operating under the control of software instructions associated with a new switch feature for executing a series of actions used to integrate the new switch feature with the ...	01/24/1995
5295177	Automatic terminal start/stop verification system using call processing simulator In an automatic terminal start/stop verification system, a terminal start/stop simulation unit which simulates a task module of a call processing program for an exchange. The exchange has call processors which process and control calls, terminals, line pr...	03/15/1994
5198808	Matrix switch apparatus with a diagnosis circuit having stand-by ports and reduced size matrix switching elements In a matrix switch apparatus with a diagnosis circuit, a switch unit is positioned between a group of input line interface circuits and a group of output line interface circuits. The switch unit includes front switches and back switches, respectively, equ...	03/30/1993
4692939	Switch testing Switches of telephone grids are tested for delayed action subsequent to, but within a number of milliseconds after, actuating the opening or closing of the switches. Excessive delay indicates approaching failure....	09/08/1987
4670897	Circuit testing of telephone grids or the like Multiple electrical path assembly as in a telephone grid, is rapidly and accurately checked by grounding one end of all but one of the path conductors, applying a test signal to that one end, detecting the presence or absence of signal on both ends of all...	06/02/1987
4516076	Fault detection arrangement for relay switching system An arrangement for detecting faults in automatic test systems of the type wherein test points in a unit under test are connected to test instruments by the programmed closure of electromechanical relay contacts. Respective contacts of the relays are conne...	05/07/1985
4228328	Signal distributor test arrangement An arrangement for testing relay contacts of a signal distributor is disclosed. The output relay contacts are coupled via isolation diodes to a common circuit node and the input relay contacts are coupled to a second node. A potential is applied to the fi...	10/14/1980
4147901	Relay margin test set Disclosed is a telephone system test apparatus for a telephone switching system having tip and ring circuits which cause a control relay to close upon completion of a path therebetween and which cause the same relay to close upon further opening and closu...	04/03/1979
4045623	Short circuit indicator for a terminator matrix A matrix of electrical termination points arranged in pairs is provided with a detection circuit for detecting short circuits between termination points. A transistor circuit is associated with each pair of termination points. A connection is provided fro...	08/30/1977
3971893	Control system and process for a space-division switching network Controls are provided for a space-division switching network with relay crosspoint matrices, each crosspoint having four switching coils or windings. A crosspoint relay is switched when two pairs of pulses are provided simultaneously, one pulse to each wi...	07/27/1976
3941949	Method and apparatus for isolating malfunctions occurring in sender-receiver communication switching system equipment A method and apparatus for isolating malfunctions occurring in a communication switching system having a line switching network for establishing communications selectively between calling and called lines under the control of common equipment including a ...	03/02/1976

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Class 379/17 - Of switching selector