Patents
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Patents for H04Q 11 - Selecting arrangements for multiplex systems (43,004)
09/1984
09/26/1984EP0119843A2 A system for linking channel group in digital communication network
09/26/1984EP0119588A2 Integrated communication system and method of establishing videotelephone links in the same
09/25/1984US4473900 Modular structure for multistage PCM switching network
09/19/1984EP0118767A2 Method for a telecommunication exchange, especially a private telephone exchange with a data loop transmission system, especially with an optical data loop transmission system
09/19/1984EP0118545A1 Pulse width modulated telephone line interface
09/18/1984US4472801 Distributed prioritized concentrator
09/18/1984US4472798 Telecommunication path substitution arrangement
09/11/1984US4471479 Circuit arrangement for time-division multiplex telecommunication exchange systems comprising multiplex lines whose time channels serve partially for message connections and partially for the transmission of signaling information
09/11/1984US4471169 Arrangement of interactive telephone switching processors and associated port data storage means
09/11/1984CA1174385A1 System for interconnecting subscriber lines to a telephone automatic time division switch
09/05/1984EP0117644A1 Digital communication station
09/05/1984EP0117513A1 Operation method for a memory-controlled electronic switching system with central controller
09/05/1984EP0117362A2 Broad band network system
09/04/1984US4470154 Optical communication network
09/04/1984US4470139 Switching network for use in a time division multiplex system
09/04/1984CA1173946A1 Dual rail time and control unit for a duplex t-s-t- digital switching system
09/04/1984CA1173945A1 Apparatus for switching calls to remotely located port groups in a telephone switching system
09/04/1984CA1173944A1 Switching network for use in a time division multiplex system
08/1984
08/29/1984EP0116617A1 A pulse code modulated digital automatic exchange
08/28/1984US4468765 Electronic telephone exchanges and optical fiber links for use therein
08/22/1984EP0116430A1 Digital communication station
08/22/1984EP0116386A1 Time division switching system
08/22/1984EP0116296A1 Method and device for signalling between picture phone sets at an existing telephone link
08/21/1984USRE31651 Communication system using intelligent network processor
08/21/1984US4467471 Circuit arrangement for time-division multiplex telecommunication switching systems for multi-channel connections
08/21/1984US4467470 Circuit arrangement for T.D.M. telecommunication exchange system, comprising T.D.M. lines whose time channels serve partially for message connections and partially for the transmission of signalling information
08/21/1984CA1173143A1 Transfer bus matrix
08/15/1984EP0115894A1 TDM loop telecommunication system comprising a first and a second transmission line
08/15/1984EP0115786A1 Communications switching system
08/15/1984EP0115486A1 Time multiplex switch for time division switching systems
08/14/1984US4466095 Speech path control system
08/14/1984CA1172738A1 Digital pbx system
08/08/1984EP0114822A1 Communication arrangements for distributed control systems.
08/07/1984CA1172342A1 Synchronized protection switching arrangement
08/01/1984EP0114433A1 Telephone switching system
07/1984
07/31/1984US4463351 System for providing several data terminals with access to a digital telephone line
07/31/1984CA1171946A1 Time division switching matrix
07/25/1984EP0113884A2 Communications installation, in particular a private branch exchange with subscriber and trunk groups and interface modules
07/24/1984US4462105 Transceiver unit for a telecommunication system
07/19/1984WO1984002815A1 Activation in a digital subscriber connection
07/18/1984EP0113639A1 Switching system for fixed-length synchronous packets
07/17/1984US4460994 Loop communication system
07/11/1984EP0113307A1 Alignment circuit for fixed-length digital information blocks
07/11/1984EP0112952A1 Multipoint connection system for subscriber stations
07/04/1984EP0112560A2 A signalling input/output processing module for a telecommunication system
07/04/1984EP0112426A1 Synchronizing system for a multiplexed loop communication network
07/04/1984EP0112425A1 TST switching network using a closed-loop connection
07/04/1984EP0112340A1 End-to-end information memory arrangement in a line controller.
07/03/1984CA1170382A1 Arrangement for adjusting an adaptive digital balance filter included in a subscriber unit
07/03/1984CA1170379A1 Digital conference time slot interchanger
07/03/1984CA1170340A1 Switch matrix apparatus for satellite-switched tdma system or the like
06/1984
06/27/1984EP0112243A1 Subscriber terminal for a telecommunication and teledistribution system, and digital signal processing method
06/27/1984EP0111792A1 Device for processing non-associated signalization for an automatic TDM switching system
06/26/1984US4456991 Telephone line circuit and system
06/26/1984US4456987 Digital switching network
06/26/1984US4456790 Automated hardware inventory system
06/26/1984CA1169974A1 Communication system for connecting a plurality of asynchronous data processing terminals
06/26/1984CA1169951A1 Device for addressing a set of recorders in a switching exchange
06/20/1984EP0111411A2 Communications systems
06/20/1984EP0111406A1 Transmission integrity arrangement and method
06/20/1984EP0110964A1 Automatic interactive conference arrangement.
06/20/1984EP0110933A1 Apparatus for through-connection testing in a digital telecommunication network.
06/19/1984US4455648 Time division multiplex switching network unit
06/19/1984US4455646 Pulse code modulated digital automatic exchange
06/19/1984US4455645 Back-up control system implemented with a redundancy scheme for protection against failure
06/13/1984EP0110691A2 System and method for controlling a multiple access data communications system
06/13/1984EP0110388A1 Optical time-division switching system employing optical bistable devices
06/13/1984EP0110360A2 Circuit arrangement for composing and separating speech and data during the transmission in a digital switching network
06/12/1984CA1169170A1 Digital subscriber communication system
06/12/1984CA1169143A1 Programmable sense and control signal preprocessor for a central office switching system
06/07/1984WO1984002244A1 Method of transferring information via a digital telecommunication network and network for such transferring
06/05/1984US4453247 Speech packet switching method and device
06/05/1984CA1168777A1 Digital two-to-four wire converter for full duplex signals
06/05/1984CA1168770A1 Idle time slot seizure and transmission facilities for loop communication system
06/05/1984CA1168737A1 Time division switching system
05/1984
05/29/1984US4451708 Spare subscriber terminal apparatus
05/29/1984US4451702 Arrangement of interactive telephone switching processors for performing timing analyses of port events
05/29/1984CA1168389A1 Analogue/digital telecommunications subscriber station
05/29/1984CA1168335A1 Dual rail time and control unit for a t-s-t-digital switching system
05/29/1984CA1168334A1 Time division switching system
05/22/1984US4450557 Switching network for use in a time division multiplex system
05/22/1984US4450556 Digital signal subscriber loop and interface circuit
05/22/1984US4450555 Device for minimizing far-end crosstalk between half-duplex digital transmission lines
05/16/1984EP0108555A2 Duplicated network arrays and control facilities for packet switching
05/16/1984EP0108554A1 Packet load monitoring by trunk controllers
05/15/1984US4449218 Analog/digital telecommunication subscriber station
05/15/1984US4449217 PCM Communication system and method of operation
05/15/1984CA1167575A1 Time slot multiple circuit for the selective establishment of connections in a t.d.m. digital telecommunications system
05/10/1984WO1984001869A1 Packet load monitoring by trunk controllers
05/10/1984WO1984001868A1 Duplicated network arrays and control facilities for packet switching
05/09/1984EP0107998A1 Digital electronic PCM-TDM exchange with decentralized architecture
05/08/1984US4447673 Ring trip apparatus for a line circuit connected to DCO switch
05/08/1984CA1167171A1 Communication system concentrator for connecting a plurality of asynchronous data processing terminals
05/02/1984EP0107547A1 Digital electronic time-division exchange with modular capacity
05/02/1984EP0033337B1 Digital loop synchronization circuit
05/01/1984US4446555 Time division multiplex switching network for multiservice digital networks
05/01/1984US4446554 Arrangement for multiple custom calling
05/01/1984US4446553 Arrangement for multiple custom calling
05/01/1984CA1166776A1 Restricted access line circuit for a communications system
05/01/1984CA1166774A1 Method and system for processing coded information transmitted during cyclically successive time frames
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