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