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)
11/1990
11/07/1990EP0396309A2 Apparatus and method for efficiently coupling digital signals to a communications medium in information packets
10/1990
10/31/1990EP0394811A2 Method for the realisation of a communication connector assisted by an EDP device
10/31/1990EP0119218B1 Bulk/interactive data switching system
10/31/1990DE3917029C1 ISDN communications system termination unit - uses microprocessors to facilitate exchanges, and has converters coupled to multiplexing line
10/30/1990US4967408 Telephone exchange including service feature apparatus
10/30/1990US4967193 Digital loop carrier system having CPU to channel unit protocol
10/29/1990WO1990013955A1 Signal generator and signal receiver based on synchronous multiplex transmission system
10/24/1990EP0374231A4 Isdn traffic generator adaptor
10/24/1990CN1046427A Asyn hronous time-division multiservice digital satellite center for connecting subscribers
10/23/1990US4965881 Linear feedback shift registers for data scrambling
10/23/1990US4965811 Network apparatus for transmitting digital signals
10/23/1990US4965795 D channel monitor
10/23/1990US4965790 Communication system for forming different networks on the same ring transmission line
10/23/1990US4965787 Methods and apparatus for multiplexing sub-rate channels in a digital data communication system
10/23/1990CA1275483C Centrex attendant console interface
10/18/1990WO1990012466A1 A technique for dynamically changing an isdn connection during a host session
10/17/1990EP0392415A1 Asynchronous digital time- multiplexed multi-service subscriber connection satellite centre
10/17/1990EP0392212A2 Method for controlling the formation of connections for data transmission in telecommunication systems
10/17/1990EP0392141A2 Digital communications exchange
10/16/1990US4964122 TDM data transmission system
10/16/1990US4964112 Method for monitoring the quality of a digital signal in sections of a data transmission circuit
10/16/1990US4964105 Replacement switch
10/16/1990US4964095 Data communication bypass apparatus and method
10/16/1990US4963862 Terminal equipment identifier control circuit
10/13/1990CA2014384A1 Digital telecommunications exchange system
10/11/1990DE3912230C1 Modular test system for ISDN units - uses plug adaptors to connect units to testing unit which simulates ISDN control and data exchange
10/10/1990CA2005734A1 Technique for dynamically changing an isdn connection during a host session
10/09/1990US4962499 Switching system for switching packet oriented data as well as circuit oriented data
10/09/1990US4962497 Building-block architecture of a multi-node circuit-and packet-switching system
10/03/1990CN1009895B Data transmission equipment
10/02/1990US4961217 Personal-servicing communication system
10/02/1990US4961187 PBX system with assignable relationships between network loops and ports
10/02/1990US4961186 Communication channel reallocation
10/02/1990US4961185 Method for controlling a terminal equipment coupled to an integrated services digital network and a terminal equipment based on the same
09/1990
09/26/1990EP0389062A1 Communication system, comprising a central station and a number of decentralised stations connected to that central station via an optical transmission network
09/26/1990EP0388648A2 Cell switching system for the time division multiplex communication
09/25/1990US4959856 Automatic administration of a telecommunication system
09/25/1990US4959830 Method and apparatus for through-connecting a wideband connection in a digital time switch
09/25/1990CA1274631A1 Three time slot digital subscriber line termination
09/25/1990CA1274612A1 Wavelength division optical switching system having wavelength switching light modulators
09/20/1990WO1990010884A1 Improved fiber optic distribution system
09/19/1990EP0388051A2 Technique for converting either way between a plurality of N synchronized serial bit streams and a parallel TDM format
09/19/1990EP0387789A2 Broadband switching matrix for delay equalization and elimination of inversion
09/19/1990EP0387788A2 Broadband switch matrix with non-linear cascading
09/19/1990EP0387667A2 Circuit arrangement for centrally controlled time-division telephone exchanges with a centralized switching network and decentralized connexion groups
09/18/1990US4958369 Key telephone system accommodating both digital and analog telephone networks
09/18/1990US4958343 Communication channel reservation
09/18/1990US4958153 Method and apparatus for priority control of incoming calls at ISDN terminals
09/18/1990CA1274301A1 Telephone exchange
09/18/1990CA1274300A1 Line condition data collecting system for a telephone exchange
09/17/1990CA2011828A1 Broadband switch matrix with non-linear cascading
09/17/1990CA2011827A1 Broadband switching matrix for delay equalization and elimination of inversion
09/13/1990DE4000932A1 Altering bit error rate - inputs errors or changing connections to prevent system abuse
09/13/1990DE3907237A1 Device for the simulation, analysis and monitoring of ISDN terminals operating according to the ISDN system
09/13/1990DE3906934A1 Method for controlling cleardown operations in communications switching systems
09/12/1990EP0386958A1 Dual rail dilated switching networks
09/12/1990EP0386482A2 Optical data transmission system for subscriber connection
09/12/1990EP0386466A2 Optical information transmission system in the subscriber region
09/12/1990EP0385986A1 Method of processing calls.
09/12/1990EP0385982A1 Communication channel ownership arrangement.
09/12/1990CN1009605B Information transmitting device
09/11/1990US4956835 Method and apparatus for self-restoring and self-provisioning communication networks
09/05/1990EP0385804A2 Network termination equipment
09/05/1990EP0385644A1 Clock distribution arrangement for time-multiplexed switched optical network
09/05/1990EP0385127A2 Communication network with switchable network nodes
09/05/1990EP0359757A4 Automated interactive mass communications system
09/04/1990US4955054 Integrated telecommunication system with improved digital voice response
09/04/1990US4955019 Multimedia information exchanging system and equipment therefor
09/04/1990US4955014 Broadband optical communication system, particularly in the subscriber area
09/02/1990WO1990010346A1 Isdn composite switching system
08/1990
08/31/1990CA2007828A1 Clock distribution arrangement for time-multiplexed switched optical network
08/29/1990EP0384581A1 Cross-connect core switch and method for increasing its capacity
08/29/1990EP0383931A1 Method of automatically editing data for controlling a processor that carries out distributed control and a system using the same
08/29/1990CN1009415B Control device of switch
08/28/1990US4953195 Private branch exchange system with specific information transmitting function
08/22/1990EP0383666A1 Modular interface circuit and subscriber facility for a digital network
08/22/1990EP0383557A1 Network clock synchronisation
08/22/1990EP0382715A1 Switch path reservation arrangement.
08/22/1990CA2009032A1 Transmission networks
08/21/1990CA1273088A1 Toll fraud control override
08/16/1990EP0382646A1 Emulators of a digital network terminal and bus test and measurement systems
08/16/1990EP0382431A1 Communications network
08/16/1990EP0382430A1 Optical interconnection network
08/16/1990EP0382363A2 Method and apparatus for multiplexing sub-rate channels in a digital data communication system
08/16/1990EP0382362A2 Methods and apparatus for performing time interleaved multiplexed rate adaptation for sub-rate channels in a digital data communication system
08/16/1990EP0382211A2 Communication terminal connection system
08/16/1990EP0208729B1 Optical networks
08/15/1990CN1009227B Computer system
08/14/1990US4949373 Method of coordinating the transfer of a phone call
08/14/1990US4949338 Arbitration in multiprocessor communication node
08/14/1990US4949333 Enhanced universal asynchronous receiver-transmitter
08/14/1990CA1272784A1 Distributed timing control for a distributed digital communication system
08/09/1990WO1990009725A1 Communications network
08/09/1990WO1990009708A1 Optical interconnection network
08/08/1990EP0381104A1 Device for the connection of a central connection chain to connection units
08/08/1990EP0381102A1 Fibre-optical communication network with frequency division multiplexing
08/08/1990EP0381060A2 Circuit arrangement for communication exchanges, especially telephone exchanges, with distributed switching groups and central switching arrangements
08/08/1990EP0380983A2 Semiconductor optical switch and array of the same
08/08/1990EP0380958A2 Circuit arrangement for communication exchanges, especially telephone exchanges, with distributed switching groups and central switching arrangements
08/08/1990EP0380957A2 Circuit arrangement for communication exchanges, especially telephone exchanges, with remote switches, distributed switching groups and central switching arrangements
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