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)
02/1982
02/23/1982US4317196 Transparent intelligent network for data and voice
02/23/1982US4317193 Time division nodal switching network
02/23/1982US4317008 Modular time-division switching network
02/16/1982US4316283 Transparent intelligent network for data and voice
02/09/1982US4315330 Multiple data rate testing of communication equipment
02/03/1982EP0045067A1 Time division switching system
02/03/1982EP0045066A1 Time division switching system
02/02/1982US4314367 Switching circuit for digital packet switching network
02/02/1982CA1117636A1 Telephone exchange
01/1982
01/26/1982US4313036 Distributed CBX system employing packet network
01/26/1982CA1117204A1 Integrated switching and transmission network
01/21/1982WO1982000232A1 A process and system for error detection in a computer-controlled telephone exchange
01/21/1982WO1982000230A1 Arrangement for adjusting an adaptive digital balance filter included in a subscriber unit
01/19/1982US4312065 Transparent intelligent network for data and voice
01/08/1982EP0033337A4 Digital loop synchronization circuit.
01/06/1982EP0042976A1 Bi-directional communication system for a two wire digital telephone link
01/05/1982US4309766 Arrangement for subscriber circuits utilizing digital time division multiplex telecommunication installations and particularly for PCM local exchanges
01/05/1982US4309765 Process for transmitting items of information between devices of an indirectly controlled exchange system, in particular a telephone exchange system
01/05/1982US4309572 Call processing system with an operator assistance in a telephone switching system
12/1981
12/30/1981EP0042666A1 Time division multiplex telecommunication digital switching module
12/24/1981WO1981003728A1 Subscriber line audio processing circuit apparatus
12/23/1981EP0042329A1 Interface for passing from a digital PCM transmission connection to a packet-mode transmission connection, and switching operator comprising such an interface
12/22/1981US4307461 Call processor for a satellite communications controller
12/22/1981CA1114934A1 Dialed number to function translator for telecommunications switching system control complex
12/22/1981CA1114933A1 Digital communication bus system
12/15/1981US4306304 Digital loop synchronization circuit
12/15/1981US4306303 Switching of digital signals
12/08/1981US4305148 Automatic exchange with a digital switching network
12/02/1981EP0041001A1 Bit-by-bit time-division digital switching networks
12/01/1981CA1113593A1 Signal monitoring and controlling system in a time division switching system
11/1981
11/24/1981US4302836 Monitoring circuit for time-division switching network
11/24/1981US4302831 Method and circuit arrangement for clock synchronization in the transmission of digital information signals
11/24/1981US4302631 Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems
11/18/1981EP0040046A1 Modular telecommunications system
11/18/1981EP0039948A1 PCM switching element
11/17/1981US4301336 Hybrid circuit
11/17/1981CA1112747A1 Digital switching arrangements for stored program control telecommunications systems
11/17/1981CA1112746A1 Digital switching system with central control and interface unit
11/17/1981CA1112745A1 Digital switching system with time-space-time stages
11/10/1981US4300230 Digital switching arrangements for stored program control telecommunications systems
11/10/1981US4300021 Line circuit controlled by a hall effect device
11/10/1981CA1112344A1 Digital switching system with central control unit and data reformatter section
11/04/1981EP0039134A1 Improved telecommunications switching network using digital switching modules
11/04/1981EP0039077A1 Time-division switching network
11/03/1981US4298979 Decoding TIM bus structure
11/03/1981US4298977 Broadcast and alternate message time slot interchanger
10/1981
10/29/1981WO1981003095A1 Digital subscriber communication system
10/27/1981CA1111531A1 Digital signalling receiver for receiving pcm tones
10/21/1981EP0038147A1 Improvements in or relating to computer control systems
10/20/1981US4296492 Continuity verification arrangement
10/13/1981US4295217 Apparatus to reduce the effect of a mid-talkspurt freeze-out
10/13/1981CA1110745A1 Time division digital switching system
10/13/1981CA1110744A1 Time-division multiplex communication system for connecting two-wire line circuits in time-division multiplex
10/07/1981EP0037107A2 Subscriber terminal for use in a time shared bidirectional digital communication network
10/07/1981EP0037048A1 Signal affirmation device
10/06/1981US4293946 Trilateral duplex path conferencing system with broadcast capability
10/06/1981US4293738 Analog access arrangement for a digital telephone office
09/1981
09/30/1981EP0036808A1 Communication system concentrator for connecting a plurality of asynchronous terminals
09/30/1981EP0036807A1 Communication system concentrator for connecting a plurality of asynchronous terminals
09/30/1981EP0036622A2 Digital message transmission system
09/30/1981EP0036596A1 Device for the interleaving of the writing and reading times of information in a memory of a synchronization unit
09/29/1981CA1109972A1 Fixed speech buffer memories for signalling without an order wire
09/29/1981CA1109950A1 Digital telecommunication switching systems
09/16/1981EP0035926A1 Signalling switching system in a time-division switching network and a time-division switching network comprising such a system
09/15/1981US4290135 Circuit arrangement for receiving digital intelligence signals in a digital switching center for PCM-time-division multiplex communication networks
09/15/1981US4290134 Multiplex information handling system
09/15/1981CA1109173A1 Singing preventive system
09/15/1981CA1109169A1 Method and apparatus for signalling and framing in a tdm communication system
09/15/1981CA1109167A1 Time assignment speech interpolation communication system with variable delays
09/09/1981EP0035181A2 Arrangement for the individual channel release and locking of telephone channels in signal converters of a time division multiplex system for pulse code modulation
09/08/1981US4288870 Integrated telephone transmission and switching system
09/02/1981EP0034905A1 Improvements in or relating to telecommunications exchanges
09/02/1981EP0034776A1 Diagnostic circuit for PCM connection networks
09/01/1981US4287591 Communications transmission system
09/01/1981US4287590 Time division multiplex communication system
09/01/1981CA1108325A1 Telecommunications system
09/01/1981CA1108275A1 Method and means for accessing program memory of a common control telecommunications switching system
08/1981
08/26/1981EP0034514A1 Time division switching installation for lines carrying voice and data packets
08/26/1981EP0034355A1 Interface for linking two data processing systems
08/26/1981EP0034336A1 Digital frequency transmitter
08/26/1981EP0034308A1 Method and circuit for conference operation in PCM time division multiplex telecommunication installations
08/25/1981US4286119 Arrangement for concentrating pulse code modulation processing circuits in a digital telephone office
08/25/1981CA1107850A1 Modular switching system
08/19/1981EP0033933A2 Process for feeding audible tones into conference communications
08/18/1981US4285057 Sampling gate for TDM telecommunication system
08/18/1981US4285037 Circuit arrangement for a switching system
08/12/1981EP0033337A1 Digital loop synchronization circuit.
08/05/1981EP0033149A2 Switch matrix apparatus for satellite-switched TDMA system or the like
08/04/1981US4282600 Method for synchronizing sending and receiving devices
08/04/1981US4282400 Signaling unit for interchange of data with multipoint line selection units and data terminals
07/1981
07/28/1981US4281410 Circuit arrangement for telecommunications especially telephone installations that switch through digitally by time division
07/22/1981EP0032365A1 Supervision device for a digital signal generator
07/21/1981US4280217 Time division switching system control arrangement
07/21/1981US4280216 Method of making conference call connections in a multiplex switching system
07/21/1981CA1105586A1 Digital data transmission arrangement
07/08/1981EP0031557A1 Apparatus for optical telephony
07/08/1981EP0031486A2 Apparatus to reduce the effect of a mid-talkspurt freeze-out
07/08/1981EP0031457A2 Wide-band switching system
07/08/1981EP0031325A1 Selectively controlled digital pad
07/07/1981US4277843 Closed-loop telecommunication system
1 ... 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431