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)
09/1980
09/17/1980EP0015524A1 Automatic switching system with digital connection network
09/09/1980CA1085524A1 Four-wire integrable hybrid
09/03/1980EP0014945A1 Circuit arrangement for clock generation in telecommunications exchanges, in particular time division multiplex digital exchanges
09/02/1980US4220823 Selectively controlled digital pad
08/1980
08/20/1980EP0014328A1 Busy-circuit for the "incoming" c-conductor in a telecommunication device
08/19/1980US4218589 Method and apparatus for testing tone generators
08/19/1980US4218588 Digital signal switching system
08/19/1980CA1084183A1 Branched path, path routing arrangement and systems
08/12/1980US4217488 Secure optical communication components, method, and system
08/12/1980CA1083717A1 Signal coding for telephone communication system
08/12/1980CA1083696A1 Time division switching network
08/06/1980EP0014152A1 Operator for a packet-switched data network
07/1980
07/29/1980CA1082823A1 Time division system for synchronizing functions controlled by different clocks
07/22/1980CA1082369A1 Processor circuit
07/15/1980US4213201 Modular time division switching system
07/15/1980US4213015 Failure alarm for a transmission line communications system
07/15/1980CA1081872A1 Concentration network for tdm telephone exchange
07/15/1980CA1081816A1 Bidirectional digital information transmission system using a single two-wire line
07/08/1980CA1081379A1 Telephone transmission system
06/1980
06/25/1980EP0012642A1 Testing device for a time division switching network
06/25/1980EP0012247A1 Subscriber line circuit
06/25/1980EP0012135A1 A method and a switch for serially bit-switching word formatted data
06/10/1980US4207435 Channel translators for use in time division digital exchangers
06/10/1980US4207433 Test arrangement for communication paths in time-division multiplexed switching systems
06/03/1980USRE30294 Reversible analog to digital converter
06/03/1980US4206322 Time-division switching system for multirate data
05/1980
05/28/1980EP0011153A1 Method for the transmission of information between devices of an indirectly controlled switching system, in particular a telephone switching system
05/20/1980US4204093 Variable frame rate technique for use in a time-division multiple access (TDMA) communication system
05/20/1980CA1078050A1 Multi-stage switching network in a telecommunication switching system
05/20/1980CA1078048A1 Method of and arrangement for switching a service information
05/14/1980EP0010726A1 Multiplex space switch
05/14/1980EP0010720A1 Fully electronic loop closure circuit
05/13/1980US4203005 Digital type telephone system having a conference function
05/06/1980US4201894 Arrangement for conversion of random to fixed data channel format
05/06/1980US4201893 Private automatic branch exchange telephone system with two data sources sharing a multiplexed data bus
05/06/1980US4201891 Expandable digital switching network
05/06/1980US4201890 Multiport digital switching element
05/06/1980US4201889 Distributed control digital switching system
04/1980
04/22/1980CA1076278A1 Peak shut-off electronic switch
04/17/1980WO1980000775A1 Time-division switching system for multirate data
04/16/1980EP0009586A1 Method for the synchronization of transmitting and receiving devices
04/15/1980US4198546 Time division multiplex switching network
04/15/1980CA1075798A1 Multiprocessor control of a partitioned switching network by control communication through the network
04/08/1980US4197523 Digital telecommunication switching systems
04/02/1980EP0009461A2 Circuit arrangement for subscriber stations
04/02/1980EP0009256A2 Control word source for time-division switching system accomodating multirate data
04/02/1980EP0009143A1 Circuit arrangement for the reception of digital message signals in a digital exchange of a PCM time multiplex telecommunication network
04/02/1980EP0009124A1 Arrangement for subscriber circuits of digital time multiplex telecommunication systems, in particular of local PCM telephone exchanges
04/01/1980US4196321 Loopback test system
04/01/1980CA1074892A1 Temporal telecommunication standard
04/01/1980CA1074891A1 Time-division switching system
03/1980
03/25/1980US4195206 Path test apparatus and method
03/25/1980US4195205 Signal transfer system for time division switching systems
03/11/1980US4192973 Processor overload arrangement in time division multiplex exchanges
03/11/1980CA1073567A1 Space concentrator
03/04/1980US4191857 Digital trunk supervisory decoder multiplexor for ground start or E&M signalling on a common T1 span
02/1980
02/26/1980US4190742 Process and apparatus for producing conference connections in a PCM time multiplex switching system
02/26/1980US4190740 Circuit arrangement for receiving and transmitting switching data in telecommunication exchanges
02/26/1980US4189846 Process for the continuous production of solids, in particular protein concentrates, from aqueous solutions, and apparatus for the practice of the process
02/21/1980WO1980000289A1 Selectively controlled digital pad
02/20/1980EP0008067A2 Indirectly controlled telecommunication system equipped with time switching stages in particular a telephone exchange system
02/20/1980EP0008066A2 Indirectly controlled telecommunication system equipped with time switching stages, in particular a telephone exchange system
02/20/1980EP0008065A1 Indirectly controlled telecommunication system equipped with time switching stages, in particular a telephone exchange system
02/19/1980USRE30220 Station loop control arrangement for telephone switching system
02/12/1980CA1071742A1 Digital switching centre
02/07/1980WO1980000211A1 Multiplex time division switching network unit of the"time-time"type
02/05/1980US4187402 Method of controlling channel assignment in a time division multiplexing network
02/05/1980US4187401 Method of controlling channel assignment in a time division multiplexing network
02/05/1980US4187400 Time-division multiplex communication system for connecting two-wire line circuits in time-division multiplex
02/05/1980US4187399 Call state processor for a time division switching system
01/1980
01/29/1980US4186277 Time division multiplex telecommunications switching network
01/29/1980US4186276 PCM TDM switching network
01/29/1980CA1070804A1 Electronic switching system
01/09/1980EP0006244A1 Telecommunication system
01/09/1980EP0006214A1 Time division connexion network and means for mitigating the effects of failures
01/09/1980EP0006145A1 Circuit arrangement for a telecommunication exchange with microprocessors
01/09/1980EP0006134A1 Indirectly controlled switching system with time division junctures, in particular telephone switching system
01/09/1980EP0006133A1 Indirectly controlled switching system with time division junctures, in particular telephone switching system
01/09/1980EP0006132A1 Indirectly controlled switching system with time division junctures coupled over time division stages, in particular telephone switching system
01/08/1980CA1069607A1 Time division multiplexed pabx communication switching system
12/1979
12/25/1979CA1068804A Method for transmission of pcm words and a digital exchange for executing the method
12/18/1979US4179587 Bit switching of word formatted data
12/13/1979WO1979001089A1 Multiple frame rate technique for a tdma communication system
12/12/1979EP0005833A1 Method and circuit for establishing conference connections in a PCM-time multiplex switching system
12/11/1979US4178483 Time-division switching telephone exchange comprising a service signal sender
12/11/1979US4178480 Signal multiplexing circuit
12/11/1979US4178479 Communication processor apparatus for use in a TDM switching system
12/11/1979US4178478 Subscriber terminal for use in a TDM switching system
12/11/1979CA1067987A1 Apparatus for rearrangement of a switching network
11/1979
11/27/1979CA1067188A1 Connection networks for time-division multiplex systems
11/20/1979US4175218 Telephone switching system
11/20/1979CA1066825A1 Modular slot interchange digital exchange
11/20/1979CA1066794A1 Telephone concentrator
11/14/1979EP0005220A2 Circuitry for time division multiplex digital switching telecommunication exchanges, in particular telephone exchanges
11/14/1979EP0005157A2 Multistage folded switching network for a PCM switching unit
11/13/1979US4174468 Digital coin circuit
11/13/1979CA1066396A1 Time division multiplex telecommunication exchange
11/06/1979US4173713 Continuously expandable switching network
11/06/1979CA1065977A1 Switching network for a pcm tdm system
10/1979
10/23/1979US4172214 Integrated message accounting system
1 ... 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431