Patents for H04Q 3 - Selecting arrangements (38,975) |
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03/02/1993 | US5191507 Polarity inverting circuit |
02/24/1993 | EP0527950A1 Digital computer platform for supporting telephone network applications. |
02/24/1993 | EP0527855A1 Long distance telephone switching system with enhanced subscriber services |
02/24/1993 | EP0527723A1 Location identification. |
02/23/1993 | US5189697 For supplying energizing direct current from a power source |
02/23/1993 | US5189695 Communication terminal unit for connection to an ISDN |
02/23/1993 | US5189666 Bit-slice asynchronous transfer mode switching system |
02/23/1993 | US5189662 Transmission network having electronically switchable nodes for switching signal paths and a method of controlling said network |
02/18/1993 | WO1993003582A1 Crossbar with return net for scalable self-routing non-blocking message switching and routing system |
02/18/1993 | WO1993003581A1 Message structure for scalable self-routing non-blocking message switching and routing system |
02/18/1993 | WO1993003580A1 Scalable self-routing nonblocking message switching and routing network |
02/18/1993 | WO1993003567A1 An atm switching arrangement |
02/18/1993 | WO1993003565A1 An atm switching arrangement |
02/18/1993 | WO1993003557A1 Telecommunications switching device |
02/18/1993 | CA2114725A1 Message structure for scalable self-routing non-blocking message switching and routing system |
02/18/1993 | CA2113725A1 Scalable self-routing non-blocking message switching and routing network |
02/18/1993 | CA2113647A1 Crossbar with return net for scalable self-routing non-blocking message switching and routing system |
02/16/1993 | US5187740 Method and apparatus for telephone call reorigination |
02/16/1993 | US5187735 Integrated voice-mail based voice and information processing system |
02/16/1993 | US5187710 Method and apparatus for the billing of value-added communications calls |
02/16/1993 | US5187706 Dual access rings for communications networks |
02/16/1993 | US5187705 Data error detecting apparatus for key telephone system and the detecting method therefor |
02/11/1993 | DE4126814A1 Telephone conference circuit - has summing amplifiers for each subscriber connected to switching matrix array, and uses two transmission amplifiers to feed receive line of third participating subscriber |
02/10/1993 | EP0527006A2 An optical switching system |
02/10/1993 | EP0526990A2 Module comprising in an ATM exchange connection ports, each transmitting a cell indicative of a destination module in a cell header |
02/09/1993 | WO1993003568A1 Method of communication |
02/09/1993 | US5185824 Optical switch incorporating molded optical waveguide elements |
02/09/1993 | US5185786 Automatic call center overflow retrieval system |
02/09/1993 | US5185785 Method and apparatus for recording and rating telecommunication transactions made over a communication network |
02/09/1993 | US5185784 Line switching apparatus |
02/09/1993 | US5185782 ACD arrangement for automatically returning a call at a time specified by the original caller |
02/09/1993 | CA1313561C Communications network state and topology monitor |
02/04/1993 | WO1993002511A1 Modular, user programmable telecommunications system with distributed processing |
02/03/1993 | EP0526165A2 Method of terminal control signal transmission and photonic switching system incorporating said method |
02/03/1993 | EP0526103A2 ACD multiflow network call distribution |
02/03/1993 | EP0525515A2 Optical space switch device |
02/03/1993 | EP0525496A2 Method for measuring the duration of procedures in communication systems |
02/03/1993 | EP0525432A2 Method of changing system configuration data in a telecommunications exchange system |
02/03/1993 | EP0525243A1 Method for the display of traced information in a communication system |
02/03/1993 | EP0525189A1 Method of displaying circuit state of telephone exchange system |
02/03/1993 | EP0525121A1 Distributed protocol for improving the survivability of telecommunications trunk networks |
02/03/1993 | EP0524965A1 Private telephone system with simplified command feature. |
02/02/1993 | CA1313319C Optical switching system |
01/27/1993 | EP0524350A1 Telecommunication system for transmitting cells through switching nodes interconnected by groups of transmission links |
01/27/1993 | CN1068466A Crosstalk-resistant multi-input to single output analog switching device |
01/27/1993 | CN1068460A Current limited subscriber interface circuit |
01/26/1993 | US5182766 Generalized telecommunications customer signaling arrangement |
01/26/1993 | US5182751 Switching system using identical switching nodes |
01/26/1993 | US5182750 Transparent remoting of switching network control over a standard interface link |
01/26/1993 | US5182744 Telecommunications network restoration architecture |
01/26/1993 | US5182554 Third party evavesdropping for bus control |
01/26/1993 | US5182550 Inter-network connection system |
01/20/1993 | EP0524089A1 Software structure for a data processing system, especially for a telecommunications system |
01/20/1993 | EP0524077A1 Software structure for an information processing system |
01/20/1993 | CN1068229A Telephone circuit assembly with hook-off detector circuit |
01/19/1993 | US5181238 Authenticated communications access service |
01/19/1993 | US5181199 Packet switching system |
01/19/1993 | US5181134 Photonic cross-connect switch |
01/17/1993 | CA2073914A1 Software structure for an information processing system |
01/17/1993 | CA2073902A1 Software structure for data processing systems, particularly for telecommunications systems |
01/13/1993 | EP0522895A1 Communication control apparatus |
01/13/1993 | EP0522725A2 Voice messaging system with voice activated prompt interrupt |
01/13/1993 | EP0307401B1 Method and apparatus for providing variable reliability in a telecommunication switching system |
01/12/1993 | US5179589 Call progress pacing |
01/12/1993 | US5179550 System and method for controlling a multi-point matrix switch |
01/12/1993 | CA1312682C Frame synchronization in a network of time multiplexed optical space switches |
01/12/1993 | CA1312665C Call traffic control |
01/09/1993 | CA2073269A1 Module comprising in an atm exchange connection ports, each transmitting a cell indicative of a destination module in a cell header |
01/07/1993 | WO1993000776A1 Application modularity in telecommunications exchanges |
01/07/1993 | WO1993000775A1 Stored program controlled digital public exchange |
01/07/1993 | WO1993000763A1 Telephone marketing system |
01/07/1993 | DE4122276A1 Digital communication system allowing time division multiplexing - sends fault alarm via all other exchange-interconnecting cables if cable fails from first exchange drawing clock signal from this cable |
01/06/1993 | CN1067774A Method for performing continuity check in electronic exchange system |
01/05/1993 | CA1312394C Carrier independent network services |
12/30/1992 | EP0520706A1 Integrated crossjoint switch and parallel processing system using the same |
12/30/1992 | EP0520688A2 Method of rerouting telecommunications traffic |
12/30/1992 | EP0520483A1 Method and arrangement for establishing telephone connections |
12/30/1992 | EP0520171A1 Subscriber line interface circuit with an off-hook detection circuit |
12/30/1992 | EP0520156A2 Current limited subscriber interface circuit |
12/30/1992 | EP0520083A1 Consistency protection of data in a digital telecommunications exchange system |
12/30/1992 | EP0519956A1 An optical multiplexer |
12/29/1992 | US5175777 Optical switching matrix including plural wavelength converting devices |
12/29/1992 | US5175765 Determining if transmissions over a network are reliable |
12/29/1992 | US5175761 Call transfers by voice messaging system (VMS) integrated to a private branch exchange |
12/29/1992 | US5175640 Interleaved receivers |
12/29/1992 | US5175539 Interconnecting network |
12/29/1992 | CA1312134C Cell switching system of asynchronous transfer mode |
12/29/1992 | CA1312132C Telephone exchange including service feature apparatus |
12/26/1992 | CA2071447A1 Crossbar switch and parallel processing system using the same |
12/16/1992 | EP0518449A1 Optical interconnection apparatus |
12/16/1992 | EP0518432A2 Digital subscriber line circuit for connecting an ISDN subscriber to the trunk side of a digital exchange |
12/16/1992 | EP0518344A2 Connection set-up between networked mobile subscriber terminals |
12/15/1992 | US5172412 Subscriber circuit capable of suppressing in-phase induced noise |
12/15/1992 | US5172259 Embedded control network |
12/15/1992 | CA1311384C Multi-stage switching network for light waveguides |
12/10/1992 | WO1992022034A1 A high-performance host interface for atm networks |
12/10/1992 | CA2109917A1 A high-performance host interface for atm networks |
12/09/1992 | EP0517446A2 A replicating method for a switching system, in particular a telephone exchange |
12/09/1992 | EP0517442A2 Transferring lines in a digital SLC system |
12/09/1992 | EP0517344A1 Optical correlation apparatus |