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)
07/1989
07/25/1989US4852088 Packet-at-a-time reporting in a data link controller
07/25/1989US4852085 Expandable digital switching matrix with fault-tolerance and minimum delay time
07/20/1989DE3900364A1 Implementation of office and information systems using digital telephone systems
07/20/1989DE3806262C1 Circuit arrangement for monitoring the state of switching points in a digital space-division switching network
07/18/1989US4850047 Optical bus communication system utilizing frame format signals
07/18/1989US4849977 D-5 Channel bank control structure and controller
07/18/1989US4849972 Digital data communications terminal and modules therefor
07/18/1989US4849970 Smoothing apparatus for an independently clocked network
07/18/1989US4849969 Implementation of smoothing apparatus for an independently clocked network
07/18/1989US4849968 Buffer management system
07/18/1989US4849966 Announcement system
07/18/1989US4849964 Multistage switching system for switching N1 input channels to N2 output channels
07/18/1989CA1257675A1 Switching tdm digital signals
07/13/1989DE3743956A1 Method for initiating communication connections, which can be controlled by means of a digital communication system, by means of an external computer system connected thereto
07/12/1989EP0323920A2 Optical switch system
07/12/1989EP0144351B1 System for switching multirate digitized voice and data
07/12/1989CN1033916A Digital key telephone system
07/12/1989CN1033915A Telecommunications digital switch
07/11/1989US4847836 Circuit arrangement for synchronizing the units in the switching exchanges and repeaters of a time-division multiplex transmission system
07/11/1989US4847833 System for the simultaneous operation of a plurality of terminal equipment at a network terminating unit of a broadband network
07/11/1989US4847829 Video conferencing network
07/11/1989US4847828 Analog data signal switching network with means for cross-connecting analog signals to output lines by double-stage sampling
07/05/1989EP0323248A2 Time division switching for multi-channel calls using two time switch memories acting as a frame aligner
07/05/1989EP0323083A1 Communication terminal apparatus
07/05/1989EP0323075A2 An optical switch
07/04/1989US4845752 Multi-signal processor synchronized system
07/04/1989US4845710 Dynamic buffer supervising system for a data link access protocol control
07/04/1989US4845705 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
07/04/1989US4845704 Switching system for integrated voice/data communications
07/04/1989US4845703 Wavelength division optical switching system having wavelength switching light modulators
07/04/1989US4845702 Optical telecommunication package switching system using asynchronous techniques
07/04/1989CA1257022A1 Low speed gate circuit
07/04/1989CA1257021A1 Data communication systems
07/04/1989CA1256970A1 High-speed switching processor for a burst-switching communications system
06/1989
06/29/1989WO1989006084A1 An error correction method in a switch and a switch provided with error correction means
06/27/1989US4843606 Local area communication system for integrated services based on a token-ring transmission medium
06/27/1989CA1256615A1 Personal computer - as an interface between a telephone station set and a business communication system
06/27/1989CA1256614A1 Signal processor communication interface
06/27/1989CA1256610A1 Method of secured communications in a telecommunications system
06/27/1989CA1256540A1 Methods of establishing and terminating connections in a distributed-control communications system
06/27/1989CA1256539A1 High speed queue sequencer for a burst-switching communications system
06/21/1989EP0321426A1 An error correction method in a switch and a switch provided with error correction means
06/21/1989EP0320890A2 Simple adapter for multiplexing ISDN terminals
06/21/1989EP0320772A2 Method of hybrid packet switching and devices therefor
06/21/1989EP0320627A1 Method for switching a line card to an associated line card in telecommunication exchanges
06/20/1989US4841522 Time division channel switching circuit
06/20/1989CA1256185A1 Interface circuit for transmitting command codes to an attendant console
06/20/1989CA1256184A1 Interface circuit for transmitting keycodes to a centrex
06/20/1989CA1256183A1 Arrangement for initializing a centrex console interface circuit
06/20/1989CA1256182A1 Arrangement for transferring data to an attendant console
06/14/1989EP0320426A1 Coordinated transfer of voice and information through a digital switch
06/14/1989EP0320041A2 Multi-access device
06/14/1989EP0215905A4 Combined voice/data telephone system.
06/13/1989US4839888 Digital time-division multiplex switch-based telephone subscriber connection system
06/13/1989US4839643 Broadband signal switching equipment
06/13/1989CA1255823A1 Telephone system
06/07/1989EP0319139A2 Digital key telephone system
06/07/1989CN1033327A Robust, collateral messaging and recovery system and method within a digital switch
06/01/1989WO1989005085A1 Switched optical network
05/1989
05/30/1989US4835773 Duplicated equipment
05/30/1989US4835770 Multiplexer/demultiplexer circuitry for LSI implementation
05/30/1989US4835769 Passive bus communication for ISDN
05/30/1989US4835768 High speed digital signal framer-demultiplexer
05/30/1989US4835766 Monitoring system capable of monitoring a sequence of digital signals flowing through a subscriber line
05/30/1989US4834483 Fast optical cross-connect for parallel processing computers
05/30/1989CA1254985A1 Broadcast packet switching network
05/30/1989CA1254983A1 Stochastic time division multiplexing
05/30/1989CA1254981A1 Communications switching system
05/30/1989CA1254978A1 Digital communication network architecture for providing universal information services
05/30/1989CA1254948A1 Wideband switching system
05/24/1989EP0317352A1 Switched optical network
05/24/1989EP0317170A2 Interprocessor switching network
05/24/1989EP0317055A2 Telecommunications digital switch
05/23/1989US4833670 Cross-point bit-switch for communication
05/23/1989US4833669 Circuitry for connecting multistage coupling fields and intermediate lines
05/23/1989US4832434 Network comprising a multitude of optical signal transmission lines connectible to one another via optical mixers
05/23/1989CA1254641A1 Nonblocking self-routing packet and circuit switching network
05/23/1989CA1254640A1 Switching system having multiple parallel switching networks
05/18/1989WO1989004573A1 Call appearance reservation arrangement
05/18/1989DE3735774A1 ISDN system with 64-kbit/s channels
05/16/1989US4831618 Additive PCM speaker circuit for a time shared ISDN conference arrangement
05/16/1989US4830444 Optical switch
05/11/1989EP0292476A4 Low speed gate circuit.
05/11/1989DE3735853C1 Switching system
05/10/1989EP0315351A2 A passive star coupler
05/09/1989US4829227 High speed data link
05/09/1989CA1253940A1 Digital local switching system
05/09/1989CA1253936A1 Digital network system having arrangement for testing digital subscriber line
05/05/1989WO1989004105A1 Switch path reservation arrangement
05/05/1989WO1989004104A1 Communication channel ownership arrangement
05/03/1989EP0133577B1 Data transmission system in a digital transmission network and arrangement for the use of this system
05/03/1989CN1004113B Data communication system
05/02/1989US4827499 Call control of a distributed processing communications switching system
05/02/1989US4827256 Sound transmission method for data way system
05/02/1989CA1253603A1 Method of and circuit arrangement for through- switching broadband digital signals without phase jump in a synchronous broadband communication network
05/02/1989CA1253602A1 Data base creation in stored program controlled switching systems
05/02/1989CA1253600A1 Controlling multi-port hunt groups in a distributed control switching system
04/1989
04/27/1989DE3735187A1 Method and circuit arrangement for controlling a switching matrix in a switching node of a broadband switching system
04/26/1989EP0313389A2 Optical packet switching system
04/26/1989EP0313388A2 Light triggering switch
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