| Patents for H04Q 3 - Selecting arrangements (38,975) |
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| 05/24/1988 | CA1237186A1 Digital timeslot and signaling bus in a digital pbx switch |
| 05/19/1988 | DE3638684A1 Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with connection-individual switching units, subscriber-individual switching components and subscriber identification devices |
| 05/18/1988 | EP0157819B1 Multi-processing stored program controlled telecommunication establishment |
| 05/17/1988 | US4745592 Coherent photonic telecommunications system |
| 05/17/1988 | US4745409 Broadband signal space switching device |
| 05/17/1988 | CA1236907A2 System for accessing electrical circuits and relay switch thereof |
| 05/17/1988 | CA1236905A2 System for accessing electrical circuits and access switch thereof |
| 05/11/1988 | EP0266530A2 A method of controlling a multi-stage interconnection network |
| 05/11/1988 | CN87105157A Pabx-networking |
| 05/10/1988 | US4744102 Crossbar line hunting arrangement |
| 05/10/1988 | US4744028 Methods and apparatus for efficient resource allocation |
| 05/10/1988 | CA1236553A1 Rearrangeable full availability multistage switching network with redundant conductors |
| 05/04/1988 | EP0265888A2 Electron beam information exchange apparatus |
| 05/04/1988 | EP0265817A1 Method for traffic load control for telecommunication exchanges, in particular telephone exchanger equipped with control processors and traffic overload limitation |
| 05/03/1988 | CA1236202A1 Interconnection networks |
| 04/26/1988 | US4741027 Transmission path selection circuit in a telecommunication network |
| 04/26/1988 | US4740957 Asynchronous addressable electronic key telephone system |
| 04/26/1988 | US4740955 Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones |
| 04/26/1988 | US4740953 Time division speech path switch |
| 04/26/1988 | US4740061 Optical path switching mechanism |
| 04/26/1988 | CA1235784A1 Arrangement for the generation of information and/or an instruction intended for input to the program memory of a computer |
| 04/20/1988 | EP0264239A2 An arrangement for linking multistage switching matrices |
| 04/20/1988 | EP0264119A2 An optical wavelength-division switching system |
| 04/20/1988 | EP0264092A2 Telephone system |
| 04/20/1988 | EP0264046A1 Switching device for broad-band signals |
| 04/20/1988 | EP0264006A1 Communication system with special communication services which can be activated by programme submodules of a system control programme |
| 04/20/1988 | CN87107027A Arragement for linking multistage switching matrices |
| 04/19/1988 | US4739520 Optical switching system |
| 04/19/1988 | US4739509 Automated message chronicling system |
| 04/19/1988 | CA1235468A1 Process for the determination of the ultimate intermediate node in a system comprised of several interconnected modes |
| 04/13/1988 | EP0263551A1 Method of overload control for the central of a telecommunication system and arrangement for implementing the method |
| 04/12/1988 | US4737983 Automatic call distributor telephone service |
| 04/12/1988 | US4737954 Subscriber line signalling device for use in a telecommunications system |
| 04/12/1988 | US4737659 Controlled switching array |
| 04/12/1988 | CA1235241A1 Resistive line circuit |
| 04/12/1988 | CA1235240A1 Electronic battery feed circuit for telephone systems |
| 04/12/1988 | CA1235232A1 Anti-mutilation circuit for protecting dynamic memory |
| 04/06/1988 | EP0262859A1 Adjunct processor for providing computer facility access protection via call transfer |
| 04/06/1988 | EP0262709A1 Telecommunication system including a central back-up memory |
| 04/06/1988 | EP0262486A1 Address management unit of a central multiprocessor control unit of a telecommunication exchange system |
| 04/06/1988 | EP0262479A1 Switching device for broad-band signals |
| 04/05/1988 | US4736409 Control data transmission system for private branch exchange |
| 04/05/1988 | US4736405 Communication system with operation-procedure guiding function by speech |
| 04/05/1988 | US4736364 Switching system control arrangements |
| 04/05/1988 | US4736362 Programmable data-routing multiplexer |
| 04/05/1988 | US4736361 Digital switching system with two-directional addressing rams |
| 03/31/1988 | DE3632827A1 Method for operating a telecommunication system with a network of hierarchically structured exchanges |
| 03/30/1988 | EP0261620A2 Circuit arrangement and bus circuit with a large bandwidth, and a component for a broadband switching network |
| 03/30/1988 | EP0261352A2 Cross point switch architecture for a micro-PBX |
| 03/30/1988 | EP0161253B1 Interface channel unit |
| 03/30/1988 | CN87106170A Telecommunication network including central back-up memory |
| 03/29/1988 | US4734937 Telephone installation |
| 03/29/1988 | US4734935 Communication system with remotely controllable signal receiving means |
| 03/29/1988 | US4734933 Telephone line status circuit |
| 03/29/1988 | CA1234646A1 Wideband high voltage amplifier for telephone exchange subscriber line interface utilizing low voltage control circuitry |
| 03/29/1988 | CA1234643A1 Digital switch module |
| 03/29/1988 | CA1234638A1 Dynamic event selection network |
| 03/24/1988 | WO1988002205A1 Communication system |
| 03/22/1988 | CA1234437A1 Office line interface circuits |
| 03/16/1988 | EP0260043A2 Virtual pbx call processing method |
| 03/16/1988 | EP0259447A1 Telecommunication network and methods relating thereto. |
| 03/15/1988 | US4731878 Self-routing switch node combining electronic and photonic switching |
| 03/15/1988 | US4731829 Circuit for detecting current variations |
| 03/15/1988 | US4731827 Interswitch line circuit |
| 03/15/1988 | US4731825 Nonblocking switching system and method |
| 03/15/1988 | US4731823 Apparatus and method related to communicating analog signals between different local access transport areas |
| 03/15/1988 | US4731822 Held party notification feature |
| 03/15/1988 | US4731820 Data transmission system of key telephone system |
| 03/15/1988 | US4731817 Multi-processing stored program controlled telecommunication establishment |
| 03/10/1988 | DE3629466A1 Method for load distribution among the processors of a high-availability multiprocessor-type common control unit of a switching system |
| 03/09/1988 | EP0258654A2 Adaptive, tariff dependent traffic routing and automatic network management system for multiservice telecommunication networks |
| 03/09/1988 | CN86100184B Method for non-standard communication mode |
| 03/08/1988 | US4730303 Digital switching system with host and remote duplicated transmission controllers |
| 03/08/1988 | CA1233924A1 Telephone line status circuit |
| 03/03/1988 | DE3629406A1 Method for load distribution among the central processors of a multiprocessor-type common control unit of a switching system |
| 03/03/1988 | DE3629399A1 Method for operating the central memory of a multiprocessor-type common control unit of a switching system |
| 03/03/1988 | DE3628642A1 Circuit arrangement for a party line system (connection transfer device) |
| 03/02/1988 | EP0257672A1 Digital telecommunication system comprising an exchange and a group of multi-access telephone terminals |
| 03/02/1988 | EP0257314A2 Method to guarantee the operation of a programme-controlled switching exchange |
| 03/02/1988 | EP0257290A2 Non-blocking concentration |
| 02/24/1988 | EP0256129A1 Optical space switch. |
| 02/24/1988 | CN87105391A Digital telecommunication system comprising an exchange and a group of multi-access telephone terminals |
| 02/23/1988 | US4727575 State control for a real-time system utilizing a nonprocedural language |
| 02/23/1988 | US4727567 Operator station for telephone exchange |
| 02/23/1988 | CA1233226A1 Telephone switching system |
| 02/18/1988 | EP0138952A4 A self-routing switching network. |
| 02/16/1988 | US4726054 System for interconnecting a pair of communication systems |
| 02/11/1988 | DE3626793A1 Computer-controlled switching device with operator's desk |
| 02/10/1988 | EP0169208B1 Self-routing packet switching network |
| 02/03/1988 | EP0255325A2 Call transfer between a message service system and a telephone switching system |
| 02/02/1988 | US4723280 Constant current line circuit |
| 02/02/1988 | US4723272 Telecommunication system, in particular telephone system |
| 02/02/1988 | CA1232346A1 Time division multiplexed computerized branch exchange |
| 01/28/1988 | EP0138951A4 A self routing steering network. |
| 01/28/1988 | DE3625350A1 Method for a telecommunication branch exchange, particularly a telephone branch exchange |
| 01/26/1988 | CA1232076A1 Method of using a data-processing system and data- processing system |
| 01/21/1988 | DE3623987A1 Circuit arrangement for the videotex operation in telephone branch exchanges, particularly key-type and executive-secretary systems |
| 01/20/1988 | EP0253421A1 Communication network, more specifically a telephone network and data communication network composed of a set of nodes, in which specific facilities within optionally determined domains can be offered fully integrated |
| 01/19/1988 | US4720854 Architecture for distributed control telecommunication systems |
| 01/19/1988 | US4720850 Communication system control arrangement |