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)
08/1987
08/04/1987US4685104 Distributed switching system
08/04/1987US4685103 Control circuit for a centrex attendant console interface
08/04/1987US4685102 Switching system loopback test circuit
08/04/1987US4685100 Digital trunk adapter terminal unit
07/1987
07/30/1987WO1987004579A1 Switching system
07/28/1987US4683584 Directory number translation in a distributed control switching system
07/28/1987US4683564 Matrix switch system
07/28/1987CA1224864A1 Modular space stage arrangement for a t-s-t digital switching system
07/28/1987CA1224863A1 Remote data link receive data reformatter
07/28/1987CA1224862A1 Remote data link transmit data formatter
07/22/1987EP0229684A2 Data framing system for time division multiplexing transmission
07/22/1987EP0229365A1 Method and apparatus for establishing a wideband communication facility through a communications network having narrow bandwidth channels
07/22/1987EP0229299A2 A nonblocking self-routing packet and circuit switching network
07/22/1987EP0229158A1 Circuit employing intercoupled state machines for transmitting and receiving multiformatted sequences of voice and data characters
07/22/1987CN86108527A Distributed telecommunication exchange system
07/21/1987CA1224556A1 System for switching trains of constant length data packets
07/21/1987CA1224555A1 Method of transferring information via a digital telecommunication network and network for such transferring
07/16/1987WO1987004313A1 Low speed gate circuit
07/15/1987EP0228629A2 Time-division multiplexing communication system
07/14/1987US4680779 Distributed clock synchronization in a digital data switching system
07/14/1987US4680754 Multi-function bus
07/14/1987US4680752 Time switch in a time division switching network
07/14/1987CA1224285A1 Optical main distributor
07/08/1987EP0228204A2 Architecture for distributed control telecommunication switching systems
07/08/1987EP0227852A1 Local area communication system for integrated services based on a token-ring transmission medium
07/08/1987EP0227732A1 Arrangement for establishing wide band connection in a switching network.
07/07/1987US4679190 Distributed voice-data switching on multi-stage interconnection networks
07/07/1987CA1223985A1 Apparatus and method for checking time slot integrity of a switching system
07/07/1987CA1223948A1 Duplex digital span conversion circuit arrangement
07/07/1987CA1223947A1 Digital span reframing circuit
07/07/1987CA1223946A1 Arrangement for interfacing the space stage to the time stages of a t-s-t digital switching system
07/02/1987WO1987004035A1 System for simultaneous operation of several terminals on a network terminating unit of a wide-band network
07/01/1987EP0226688A1 Serial link adapter for a communication controller
06/1987
06/30/1987CA1223680A1 Integrated communication system
06/30/1987CA1223650A1 Data communication method and circuitry
06/24/1987EP0226364A2 A method of operating a telecommunication switching system or the like
06/24/1987EP0226054A1 Digital signal distributor
06/23/1987US4675863 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
06/23/1987US4675862 For use with a digital transmission line
06/23/1987CA1223325A1 Packet and circuit switched communications network
06/23/1987CA1223323A1 Control channel interface circuit
06/16/1987US4674084 Network system
06/16/1987US4674083 Time division multiplexed switching structure for PBX
06/16/1987US4674082 PBX telephone system I/O interface
06/16/1987EP0225756A2 Method of secured communications in a telecommunications system
06/11/1987DE3542969A1 Method for activating features in digitally through-connecting telecommunications switching systems, in particular telephone switching systems
06/11/1987DE3534680C1 Circuit arrangement for releasing connections in centrally controlled telecommunication switching systems, particular telephone switching systems
06/10/1987EP0224818A1 Circuit arrangement for telecommunication exchanges, especially telephone exchanges, with jacket switching of messages from or to message processing units in message channels
06/10/1987EP0224626A1 Multi-signal processor synchronized system
06/09/1987US4672662 Switching system and method for network having a plurality of terminal control equipment units
06/09/1987US4672658 Spread spectrum wireless PBX
06/09/1987US4672604 Time slot polling arrangement for multiple stage time division switch
06/04/1987WO1987003447A1 Procedure and device for crosspoint-switching of synchronous or asynchronous data transmission lines, particularly for serial data transmission
06/03/1987EP0224311A2 Switching exchange
06/03/1987EP0224244A2 Switching system having multiple parallel switching networks
06/03/1987EP0224241A2 A self-routing switch node combining electronic and photonic switching
06/02/1987US4670626 Cross connect frame for digital signals
06/02/1987CA1222586A1 Personal-servicing communication system
05/1987
05/27/1987EP0223443A2 Switching TDM digital signals
05/27/1987EP0223258A2 Wavelength division optical switching system having wavelength switching light modulators
05/27/1987EP0222828A1 Agent communication method for telecommunication systems.
05/26/1987CA1222310A1 Pcm supervision data reformatting circuit
05/26/1987CA1222309A1 Modularly expandable space stage for a t-s-t digital switching system
05/20/1987EP0222544A2 Method of multiplexing digital signals
05/20/1987EP0221962A1 Virtual bus switching system
05/19/1987US4667320 Space-division switching network for high data rate signals
05/19/1987CA1222080A1 Method and device for selecting a station among a set of stations in communication with a main station
05/19/1987CA1222079A1 Multiple access data communications controller for a time-division multiplex bus
05/19/1987CA1222078A1 Time-division multiplex communications control system
05/19/1987CA1222035A1 Bus-configured local area network with data exchange capability
05/13/1987EP0221140A1 Operator communication arrangements for operator assistance systems
05/12/1987US4665515 Digital telephone system
05/12/1987CA1221766A1 Interface arrangement for a telephone system or the like
05/07/1987DE3539039A1 Locally controlled digital telephone switching system, in particular telephone PBX system
05/05/1987US4663759 Ring back tone transmission system
05/05/1987CA1221445A1 Semaphore terminal device for the nd 7 signalling system
04/1987
04/29/1987EP0220019A2 D-5 channel bank control structure and controller
04/29/1987EP0219917A2 Switching device with fault correction
04/29/1987CN85107738A Control device of swich
04/28/1987US4661975 Enhanced call-waiting service
04/28/1987US4661971 Digital signal cross-connection system
04/28/1987US4661952 Method for transmitting data in a telecommunications exchange
04/28/1987US4661946 Digital switch module having encoding law conversion capability
04/28/1987CA1221170A1 Line transmission systems
04/28/1987CA1221156A1 Data call transfer preindication
04/28/1987CA1221155A1 Duplicated time division switching system
04/22/1987EP0219085A2 A spread spectrum wireless PBX
04/22/1987EP0218862A1 Method for connecting additional telephone paths and sound signals at an existing telephone connexion between two subscribers
04/22/1987EP0218859A2 Signal processor communication interface
04/22/1987EP0218631A1 Telephone system and method for transmitting digital information
04/22/1987CN86106515A Communication interface for signal processor
04/21/1987CA1220843A1 Digital terminal keyboard dialing
04/21/1987CA1220832A1 X.21 switching system
04/16/1987DE3536874A1 Time division multiplex transmission method for digital narrowband and broadband signals with access of terminals to a common 16 kbit/s signalling channel
04/14/1987US4658397 Time division multiplex data transfer system and method for telephone switching or like applications
04/09/1987DE3534581A1 Method and arrangement for injecting and extracting a digital narrowband signal into and respectively out of a digital signal which contains a broadband signal
04/08/1987EP0217555A2 Telecommunication switching system
04/07/1987US4656626 Apparatus and method for providing dynamically assigned switch paths
04/07/1987US4656624 Operator communication arrangements for operator assistance systems
04/07/1987US4656623 Agent communication arrangements for telecommunication systems
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