Patents for H04Q 11 - Selecting arrangements for multiplex systems (43,004) |
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02/28/1990 | EP0356012A2 TDM Demultiplexer |
02/28/1990 | EP0355797A2 Signalling apparatus for use in an ATM switching system |
02/28/1990 | EP0355777A2 Communication apparatus for displaying information concerning call receptions |
02/28/1990 | EP0355714A2 Method and apparatus for initiating communication services |
02/28/1990 | EP0355697A2 Multimedia bidirectional broadcast system |
02/28/1990 | EP0203151B1 Loop around data channel unit |
02/28/1990 | EP0203150B1 Method and apparatus for looping around a digital transmission line at a channel unit |
02/27/1990 | US4905237 Communications system comprising an ISDN terminal equipment connection for different ISDN interfaces in an ISDN switching equipment network |
02/27/1990 | US4905236 Circuit arrangement for designational reading of information of a bit group oriented, continuous information stream at an ISDN-oriented interface |
02/27/1990 | US4905227 Circuit for subscriber line interface circuits in a digital time-division multiplex communication switching center |
02/27/1990 | US4905226 Double-buffered time division switching system |
02/27/1990 | US4905225 Communication system for timing multiplex hybrids |
02/27/1990 | US4905223 Wideband/multislot switching arrangement |
02/27/1990 | US4905222 Circuit arrangement for centrally controlled time division multiplex telecommunication switching systems, particularly PCM-telephone switching systems with line trunk groups connected to a switching matrix |
02/27/1990 | US4905220 Circuit for a central control time division multiplex PCM telecommunications system |
02/20/1990 | US4903263 Apparatus and method for providing existing telephone switching equipment with integrated services digital network capability |
02/20/1990 | US4903260 Digital circuit-switching and packet-switching network and switching facility therefor |
02/20/1990 | US4903259 Time-division multiplex switching network |
02/20/1990 | US4903258 Modularly structured digital communications system |
02/20/1990 | CA1266091A1 Fiber optic telecommunications device |
02/15/1990 | DE3827493A1 Method and arrangement for implementing data connections in a communication switching system |
02/14/1990 | CN1039667A Multi-link chip |
02/13/1990 | US4901347 Circuit arrangement for telecommunication switching systems, particularly PCM-time-division multiplex telephone switching systems with a central matrix and with local sub-switching matrices connected to the same |
02/13/1990 | US4901309 Cross-connect for switch modules |
02/13/1990 | US4901308 Digital bridge for a time slot interchange digital switched matrix |
02/13/1990 | CA1265879A1 Data framing system for time division multiplexing transmission |
02/08/1990 | DE3932700A1 Connection testing in communication network - has test signals with time channel addresses, if network is of TDM type |
02/07/1990 | EP0354120A1 Method and device for asynchronous transmission using microcells |
02/07/1990 | CN1039516A Method and apparatus for through-connecting wideband connection in digital time switch |
02/06/1990 | US4899358 Call announcement arrangement |
02/06/1990 | US4899336 Centrally controlled telecommunications exchange system |
02/01/1990 | DE3825898A1 Method for dynamic allocation of function keys to telephone terminal functions which can be invoked by said keys |
02/01/1990 | DE3825895A1 Telephone terminal with function keys |
01/31/1990 | EP0353102A2 Automatic call distribution (ACD) switching system having distributed processing capability |
01/30/1990 | US4897866 Telecommunication system with subscriber controlled feature modification |
01/30/1990 | US4897830 Optical networks |
01/30/1990 | US4896934 Broadband optical multicast switch |
01/30/1990 | CA1265273A1 Integrated calling directory |
01/30/1990 | CA1265268A1 Data transmission equipment |
01/30/1990 | CA1265228A1 Central exchange |
01/30/1990 | CA1265227A1 Method for monitoring and controlling the traffic in digital transmission networks |
01/25/1990 | WO1990000850A1 Method and apparatus for through-connecting a wideband connection in a digital time switch |
01/24/1990 | EP0351959A2 Multi-channel controller |
01/24/1990 | EP0351729A2 Optical switching system |
01/23/1990 | US4896350 Arrangement for providing a call-connection service |
01/23/1990 | CA1264845A1 Digital telephone switching system having a message switch with address translation |
01/23/1990 | CA1264843A1 Semiconductor integrated switching apparatus |
01/18/1990 | DE3918709A1 Transmission device in accordance with CCITT Recommendation 1.430 |
01/18/1990 | DE3821871A1 Broadband coupling device |
01/17/1990 | EP0351386A1 Method and apparatus for through-connecting a widebandconnection in a digital time switch |
01/17/1990 | EP0351181A2 Packet switching system for a distributed processing ISDN switch |
01/17/1990 | EP0350844A2 Method of transferring terminal programme parameters from an exchange to the terminals |
01/17/1990 | EP0350836A2 Communication system with terminals having features determined and controlled by the communication link |
01/16/1990 | US4894861 Terminal in communication network for notifying originating party's number |
01/16/1990 | US4894821 Time division switching system with time slot alignment circuitry |
01/16/1990 | US4894818 Optical packet switching system using multi-stage combination of light triggering switches |
01/11/1990 | WO1990000339A1 Method of automatically editing data for controlling a processor that carries out distributed control and a system using the same |
01/10/1990 | EP0350402A1 Personal computer integrating a digital ISDN subscriber terminal |
01/10/1990 | EP0349597A1 Improvements in electro optical switch architectures. |
01/10/1990 | EP0195051B1 Trunk call processing services for host computer interconnections |
01/10/1990 | CN1006438B Data-converting block |
01/09/1990 | US4893336 Call forwarding arrangement |
01/09/1990 | US4893310 Digital key telephone system |
01/09/1990 | US4893309 Digital interface between at least two subscriber line interface circuits and a processing unit |
01/09/1990 | US4893301 Automatic call distribution (ACD) switching system having distributed processing capability |
01/03/1990 | EP0349346A2 Communication terminal apparatus and its control method |
01/03/1990 | EP0349079A2 Ciruit arrangement for the transmission of information |
01/03/1990 | CN1038563A Time-sharing program-controlled exchanger |
01/02/1990 | US4891813 Passive bus communication using alternate CRC |
12/28/1989 | WO1989012938A1 Response control system |
12/27/1989 | EP0347903A2 High-speed optical packet switching system using optical buffer between incoming and outgoing channels |
12/27/1989 | EP0347644A1 Modular digital communication system |
12/27/1989 | CA1264081A1 Distributed voice-data switching on multi-stage interconnection networks |
12/26/1989 | US4890303 Method and circuit for synchronizing a digital data transmission system with a network-external clock |
12/26/1989 | US4890254 Clock disabling circuit |
12/20/1989 | EP0347155A2 Communication apparatus |
12/19/1989 | US4888766 Multi-terminal control system |
12/13/1989 | EP0345891A1 Switching system for switching packet oriented data as well as circuit oriented data |
12/13/1989 | CN1038006A Packet switches, switching methods, protocols and network |
12/12/1989 | US4887264 Digital key telephone system |
12/12/1989 | US4886335 Optical fiber switch system |
12/12/1989 | CA1263899A1 Synchronization circuitry for duplex digital span equipment |
12/12/1989 | CA1263898A1 Synchronization arrangement for time multiplexed data scanning circuitry |
12/07/1989 | DE3818087A1 Digital communications system with a computer controller |
12/06/1989 | EP0344534A1 Method of monitoring the quality of digital signals in sections of a transmission line |
12/06/1989 | EP0197103B1 Load balancing for packet switching nodes |
12/05/1989 | US4885769 Station controller for enhanced multi-line pick-up in centrex exchange telephone system |
12/05/1989 | US4885739 Interprocessor switching network |
12/05/1989 | US4885738 Method of and apparatus for establishing a wideband communication facility through a switched communications network having narrow bandwidth time division multiplexed channels |
12/05/1989 | CA1263728A1 Arrangement for transferring data to a centrex |
11/30/1989 | DE3816747A1 Circuit-switching packet switching device |
11/29/1989 | EP0343608A2 Digital signal exchange equipment |
11/28/1989 | US4884269 Method and apparatus for connecting ISDN devices over an analog telephone line |
11/23/1989 | EP0342861A2 Smoothing apparatus for independently clocked networks |
11/23/1989 | EP0342844A2 Smoothing apparatus for independently clocked networks |
11/23/1989 | EP0342720A1 Method of controlling in a quasi-parallel mode a plurality of peripheral units from a single control unit and a system for implementing this method |
11/23/1989 | EP0342510A1 Method for the insertion of message packets with a fixed length in a pulse frame of a digital transmission system |
11/23/1989 | EP0342469A1 Method of inserting an asynchronous 139 264 kbit/s signal in a 155 520 kbit/s signal |
11/21/1989 | CA1263169A1 Arrangement for establishing wide band connection in a switching network |
11/21/1989 | CA1263168A1 Telecommunication system for alternatingly transmitting circuit-switched and packet-switched information |