Patents
Patents for H04Q 3 - Selecting arrangements (38,975)
07/1992
07/14/1992US5130835 Light waveguide telecommunication system having one or more optical switches lying in the light waveguide path
07/12/1992CA2058657A1 System for accessing amenities through a public telephone network
07/08/1992EP0493915A2 A switching system using identical switching nodes
07/08/1992EP0493913A2 Transparent communication of control information through a switching network
07/08/1992EP0493912A2 Transparent remoting of switching network control over a standard interface link
07/08/1992EP0493896A2 Method and circuitry for routing a call
07/08/1992EP0343160B1 Automatic speech recognition to select among call destinations
07/07/1992US5128989 Key telephone system with circuitry for adding a third caller to a multiple party connection
07/07/1992US5128984 Telephone interface call processing system with call selectivity
07/02/1992DE4041109A1 Optical switch with integrated changeover switch - assigned electrical power supply with photodiodes and current source
07/01/1992EP0493292A2 Look-ahead method and apparatus for predictive dialing using a neural network
07/01/1992EP0492852A2 Optical packet switch
07/01/1992EP0492251A2 Communication system with interface circuits, a switching network, a central character channel and a multiprocessor system for central control
07/01/1992CA2056203A1 Method and circuitry for routing a call from a calling station to a desired nearby destination station
06/1992
06/30/1992US5127004 Tone and announcement message code generator for a telephonic switching system and method
06/30/1992CA1304482C Digital key telephone system
06/25/1992WO1992010770A1 A method and arrangement for optical switching
06/25/1992WO1992004794A3 Alarm and test system for a digital main line
06/25/1992DE4127966A1 Dialog-nebenstellenvermittlungsanlage Dialogue private branch exchange
06/24/1992EP0491569A2 Communication systems
06/24/1992EP0491497A1 Method and apparatus for the billing of value-added communication calls
06/24/1992EP0491493A1 Generalized telecommunications customer signaling arrangement
06/24/1992EP0491244A2 Communication network with a plurality of communication exchanges
06/24/1992EP0491063A1 Adaptive balance filter
06/24/1992EP0422014A4 Class marking apparatus for use in telephone exchanges
06/19/1992WO1992011724A1 Visual programming of telephone network call processing logic
06/19/1992WO1992011603A1 Systems and processes for specifying customized telecommunication services
06/17/1992EP0490446A1 Dynamic call routing system
06/17/1992CN2107745U Unattended computer communication controller
06/16/1992US5123011 Modular multistage switch for a parallel computing system
06/16/1992US5122892 Space-division switching network having reduced functionality nodes
06/13/1992WO1992010898A1 Multicasting in a fps switch
06/13/1992CA2098110A1 Multicasting in fps switch
06/12/1992WO1992010887A1 Optical communications system
06/11/1992DE4038725A1 Cross rail distributor for multi-processor system - uses memory device to distribute synchronous input bit streams between output lines
06/11/1992DE4038321A1 Engaging central office set in PBX installation - involves two tests, and during second one central office determining free terminal to be used
06/11/1992DE4038320A1 Engaging central office set in PBX installation - uses central control, triggered by first or second instruction, releasing internal terminal on office set engagement
06/10/1992EP0489619A2 Private branch exchange
06/09/1992US5121424 Telephone system and speech level adjusting method therefor
06/09/1992US5121391 Subscriber RF telephone system for providing multiple speech and/or data singals simultaneously over either a single or a plurality of RF channels
06/09/1992US5121381 Optical switching apparatus for digital signal cross connection and method of interswitch optical transmission of digital signals
06/09/1992US5121111 Broadband signal switching network with respective threshold-value holding feedback member
06/09/1992CA1303136C Lightwave systems using optical amplifiers
06/03/1992EP0488827A1 Interphone
06/03/1992EP0488241A2 Optical frequency division multiplexing network
06/03/1992EP0487811A1 Digital telecommunication system with intelligent user terminals
06/02/1992US5119416 Automated telephone number identification for automatic intercept in telephone networks
06/02/1992US5119375 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
06/02/1992US5119368 High-speed time-division switching system
06/02/1992US5119367 Method and a node circuit for routing bursty data
05/1992
05/31/1992CA2056227A1 Real-time decentralized network traffic management using a parallel algorithm
05/30/1992CA2056506A1 Digital telecommunication system with intelligent user terminals
05/29/1992WO1992009176A1 Switch composed of identical switch modules
05/27/1992EP0487197A2 Telephone answer supervision and service selection
05/27/1992EP0487042A1 Time switch with a distributed architecture and module for making such a switch
05/27/1992EP0486888A2 Telephone line unit having programmable read only memory
05/27/1992CN1016828B Central control unit and working method for exchange system
05/27/1992CN1016827B Operating method of multiprocessor central control unit in high-efficiency fail-safe for exchange system
05/26/1992US5117451 Interface to and operation of a voice messaging system
05/21/1992WO1992009164A1 Telephone call handling system
05/21/1992DE3740890A1 Telephone exchange memory switching procedure - addressing vol. can be changed by reassignment of some rows to either preceding or following section
05/20/1992EP0486391A1 Digital private branch exchange with direct internal switching
05/20/1992EP0486204A1 Apparatus and method to perform validation of credit cards in an ISDN network
05/20/1992EP0485918A2 Method and apparatus for digital switching of FM signals with reduced crosstalk
05/19/1992US5115466 Communication network intended for secure transmission of speech and data
05/19/1992US5115431 Method and apparatus for packet communications signaling
05/19/1992US5115428 Serial array time-slot interchangers
05/19/1992CA1301293C Key telephone system
05/15/1992CA2055398A1 Method and apparatus for digital switching of fm signals with reduced crosstalk
05/14/1992WO1992008306A1 Multicast switch circuits
05/13/1992EP0484597A1 Multicast switch circuits and method
05/13/1992EP0484482A1 Code word recognition unit and its use.
05/13/1992EP0484330A1 Digital added main line system
05/12/1992US5113430 Enhanced wide area audio response network
05/12/1992CA1300722C Remote cable pair cross-connect system
05/06/1992EP0484067A2 Automatic system for forwarding of calls
05/06/1992EP0484051A2 Telephone interface circuit
05/06/1992EP0326559B1 Communication system
05/06/1992EP0256129B1 Optical space switch
05/05/1992US5111323 Optical switching system
05/05/1992US5111200 Broadband space-division switching network with linkage in a printed circuit board having multi-layer micro-strip lines
05/04/1992EP0542741A4 Serial array time-slot interchangers.
04/1992
04/29/1992EP0482989A2 Telephone exchange apparatus
04/29/1992EP0482815A2 Rate-based scheduling of multiplexed resources
04/28/1992US5109408 Arrangement for intentionally blocking telephone calls to predefined destination numbers but allowing such blocking to be selectively overridden
04/28/1992US5109405 Automated call screening
04/28/1992US5109404 Telephone call processor with select call routing
04/28/1992US5109378 Asynchronous time division switch with increased traffic handling capability
04/28/1992CA1299709C Apparatus and method for providing existing telephone switching equipmentwith the capability of using the ss7 protocol
04/24/1992CA2052108A1 Rate-based scheduling of multiplexed resources
04/22/1992EP0481507A2 Apparatus and method for controlling cells input to ATM network
04/22/1992EP0481170A2 Subscriber interface for a fiber optic communications terminal
04/22/1992CN1060565A Asynchronous transfer mode switching arrangement providing broadcast transmission
04/20/1992WO1992007439A1 Call interceptor
04/20/1992CA2070671A1 Call interceptor
04/19/1992WO1992007431A1 Passive optical network
04/16/1992WO1992006548A1 Enhanced wide area audio response network
04/15/1992EP0480506A1 TDM - information transmission system with a variable structure
04/15/1992EP0480368A1 Asynchronous cell switch
04/15/1992EP0480233A2 Digital telecommunication exchange