Patents
Sitemap › H04 - Electric communication technique › H04Q - Selecting › H04Q 11 - Selecting arrangements for multiplex systems
Patents for H04Q 11 - Selecting arrangements for multiplex systems (43,004)
08/1990
08/08/1990EP0380951A2 Circuit arrangement for communication exchanges, especially telephone exchanges, with remote switches, distributed switching and central switching arrangements
08/08/1990EP0380946A2 Method for the control of the regulation ability of a phase-locked loop circuit
08/08/1990CN1044538A Method of testing connecting and/or switching devices and/or lines
08/07/1990CA1272520A1 Security arrangement for a telecommunications exchange system
08/02/1990DE3902568A1 System for local, synchronous billing of telephone charges in digital telephone systems which are connected to ISDN exchange lines
08/02/1990CA2009105A1 Arrangement for linking a central connection chain to connection units
08/01/1990EP0380368A2 Cell switching system
08/01/1990EP0380315A2 TV phone communication system and apparatus therefor
08/01/1990EP0380137A2 Line concentration system
08/01/1990EP0380126A2 Wavelength-division switching system for optical frequency-shift keying signals
08/01/1990EP0379695A1 Method of testing transmission and/or switching equipment and/or lines
08/01/1990EP0379617A1 Switching device for digital communication signals
08/01/1990EP0227732B1 Arrangement for establishing wide band connection in a switching network
07/1990
07/31/1990US4945554 Test circuit arrangement for computer-controlled communications switching systems
07/31/1990CA1272279A1 Rearrangeable digital signal space division switching system
07/26/1990DE3901793A1 Method for handling connections in communications switching systems in an integrated services network (ISDN)
07/25/1990EP0378776A2 Method for controlling the establishing of connexions in a communication exchange
07/25/1990EP0378694A1 Response control system
07/25/1990EP0195786B1 Telephone switching system adjunct call processing arrangement
07/25/1990CN1044198A Circuit for center controlling telecommunications exchange apparatus, particularly, pcm telephone exchange apparatus, with center conneting members and thereof connect with subconnecting members
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/24/1990US4943999 Switching system reliability
07/24/1990US4943958 ISDN interface trunk circuit
07/19/1990DE4000098A1 Transmitter system with ISDN bus - has exchange with forward transmitter for single for single, decimal selection number to forward line
07/18/1990EP0378475A1 Graphic remote control system
07/18/1990EP0378195A2 Buffer device suitable for asynchronous transfer mode communication
07/18/1990EP0378122A1 Parallel time slot interchanger matrix and switch block module for use therewith
07/18/1990EP0378114A2 Arrangement for forming a PCM line structure in a digital communication system
07/18/1990CN1008840B Microprocessor back-up system
07/17/1990US4942602 Coordinated transfer of voice and information through a network of digital switches
07/17/1990US4942574 Concurrent resource request resolution mechanism
07/12/1990WO1990007849A1 Communication adapter
07/12/1990WO1990007832A1 Communication switching system
07/12/1990DE3941349A1 Microprocessor controller and interface unit - provides direct memory access mode with protection against errors in transmission
07/11/1990EP0377395A2 Host load balancing
07/11/1990EP0377394A2 Coordinated transfer of voice and information through a network of digital switches
07/11/1990EP0377350A1 Multi-protocol ISDN communication controller
07/11/1990CN1043843A Communication switching system
07/11/1990CA2007466A1 Parallel time slot interchanger matrix and switch block module for use therewith
07/10/1990WO1990007829A1 Digital signal multiplexer and separator
07/10/1990US4941171 Electronic private branch exchange
07/10/1990US4941141 Time division switching for multi-channel calls using two time switch memories acting as a frame aligner
07/04/1990EP0376544A2 Path allocation arrangement for multi-terminal groups
07/04/1990EP0376543A2 Circuit switching system for interconnecting logical links between packet switching networks
07/04/1990EP0376527A2 Remote agent operation for automatic call distributors
07/04/1990EP0376526A2 Telephone agent management information system
07/04/1990EP0376525A2 Automated call handling apparatus
07/04/1990EP0376517A2 Telephone agent call management system
07/03/1990US4939721 Node for a fast packet-switching network in optical-electrical technology
06/1990
06/27/1990EP0375032A1 Method of establishing a data link between a pair of terminals as well as a terminal which is suitable for implementing this method
06/27/1990EP0374881A2 Method and apparatus for starting switching system
06/27/1990EP0374303A1 Process for the individual monitoring of transmission sections of a communications transmission link, and apparatus for carrying out the process
06/27/1990EP0374231A1 Isdn traffic generator adaptor
06/27/1990EP0214179B1 Processing sequence calls in a distributed control switching system
06/27/1990EP0211890B1 Path hunting in a distributed control switching system
06/27/1990CN1043416A System for connecting optical lines to wideband telecommunications exchange
06/27/1990CN1043415A Packet-switching exchange and input converter unit therefor
06/27/1990CN1008594B Digital timeslot and signaling bus in digital pbx switch
06/26/1990CA1270958A1 Resource allocation in distributed control systems
06/26/1990CA1270930A1 System for searching idle switching time slots defining a selected four-wire communication connection through a switching network working on the basis of time and space-division
06/23/1990CA2006394A1 Method of and apparatus of individually monitoring transmission sections of a communications transmission link
06/23/1990CA2006367A1 Method of testing connecting and/or switching devices and/or lines
06/20/1990EP0373171A1 Switching element for pcm signals.
06/19/1990US4935928 DC supply for an S-bus in ISDN
06/19/1990US4935923 Simple adapter for multiplexing ISDN terminals
06/19/1990US4935921 Cross-connection network using time switch
06/19/1990US4935920 Drop/insert processing circuit
06/19/1990US4935866 Multiprocessor control system
06/19/1990US4934775 Optical space switches using cascaded coupled-waveguide optical gate arrays
06/14/1990WO1990006660A1 Virtual tributary cross connect switch and switch network utilizing the same
06/14/1990WO1990006659A1 Switch components and multiple data rate non-blocking switch network utilizing the same
06/14/1990WO1990006645A1 System for cross-connecting high speed digital signals
06/13/1990EP0372795A2 Bandwidth allocation and congestion control scheme for an integrated voice and data network
06/13/1990EP0372446A1 Device for connecting optical lines with a broadband telecommunication exchange
06/13/1990EP0372283A2 Packet communication exchange and input conversion unit therefor
06/13/1990EP0216799B1 Directory number translation in a distributed control switching system
06/13/1990EP0214178B1 Controlling multi-port hunt groups in a distributed control switching system
06/13/1990EP0211891B1 Terminating port determination in a distributed control switching system using a distributed database
06/13/1990DE3841965A1 Processor load simulation device
06/13/1990CN1043056A Transmission networks
06/12/1990US4932735 Integrated optical hybrid matrix switches with very low crosstalk
06/12/1990CA1270316A1 Cross connect frame for digital signals
06/06/1990EP0371676A2 Communication channel reallocation
06/06/1990EP0371674A2 Communication channel reservation
06/06/1990EP0371570A2 Replacement switch
06/06/1990CN1042786A Parallel microcomputer of user digital terminal with digital network of centralization service
06/05/1990US4932050 Proximity detection for telecommunications features
06/05/1990US4932022 Integrated voice and data telephone system
06/05/1990US4931802 Multiple spot-beam systems for satellite communications
06/02/1990CA2002999A1 Packet-switching exchange and input converter unit therefor
05/1990
05/31/1990WO1990006026A1 Universal micro circuit for telecommunication applications
05/31/1990DE3935349A1 Transmission device with s=bus - includes additional amplifier on return line with shift compensating delay system
05/31/1990DE3840117A1 Circuit arrangement for a multipoint-capable space-time-division switching network circuit (Memory Time Switch)
05/30/1990EP0222828B1 Agent communication method for telecommunication systems
05/29/1990US4930123 Method for controlling address parameters for interconnecting lan and ISDN
05/29/1990US4930117 Wavelength division multiplexing system using optical switch
05/29/1990US4930103 Data transmission method in a digital transmission network and apparatus for implimenting same
05/29/1990US4929940 Collision crossbar switch
05/23/1990EP0369960A1 Universal micro circuit for telecommunication applications
05/23/1990EP0369690A2 Frame synchronization in a network of time multiplexed optical space switches
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