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)
11/1989
11/16/1989WO1989011190A1 Isdn traffic generator adaptor
11/16/1989WO1989011189A1 D channel monitor
11/15/1989EP0341891A2 TDM data transmission system
11/15/1989EP0341687A2 Private automatic branch exchange system
11/14/1989US4881229 Test circuit arrangement for a communication network and test method using same
11/14/1989US4881226 Digital interface of an integrated subscriber line interface circuit
11/07/1989US4879743 PBX and adjunct using multi-frequency tones for communication therebetween
11/07/1989US4879739 Wiring test device and method
11/07/1989US4879727 Adaptive threshold sampling controller
11/07/1989US4879715 Terminal equipment identifier controlling circuit
11/02/1989EP0339838A2 Control memory using recirculating shift registers
11/02/1989EP0339476A2 Method and device for the institution of electronic communication service messages composed of speech and non-speech components
11/02/1989EP0339467A1 Method and device for composing communication messages consisting of speech elements and data elements
11/01/1989CN1036867A 多路复用器 Multiplexer
10/1989
10/31/1989US4878240 Multi-service telephone switching system
10/31/1989US4878216 Method for management of logical channels for ISDN packet service
10/31/1989US4878215 Signal switching system
10/25/1989CN1036674A Data path checking system
10/24/1989US4876682 Switching tdm digital signals
10/19/1989WO1989010032A1 High speed digital signal framer-demultiplexer
10/18/1989EP0337610A2 Facsimile apparatus
10/18/1989EP0337524A1 Device for testing the conference establishing units in a digital exchange
10/17/1989EP0289526A4 Adaptive threshold sampling method.
10/10/1989US4873717 Call coverage arrangement
10/10/1989US4873716 Path allocation arrangement for multi-terminal groups
10/10/1989US4873694 Switching configuration for PCM time division multiplex telephone exchange having a central switching network and individual sub-switching networks
10/10/1989US4873682 Digital key telephone system
10/10/1989US4873681 Hybrid optical and electronic packet switch
10/10/1989US4873663 Control memory using recirculating shift registers for a TDM switching apparatus
10/10/1989CA1262274A1 Isdn d channel handler
10/10/1989CA1262272A1 Automated message chronicling system
10/05/1989WO1989009530A1 Automated interactive mass communications system
10/04/1989EP0335510A2 A data path checking system
09/1989
09/28/1989DE3809089A1 Exchange for a meshed telecommunications network
09/27/1989EP0334054A2 Node for a fast packet-switching network in optical-electrical technology
09/27/1989CN1035927A Method and device for exchanging with mixing-type groups
09/26/1989US4870638 Remote maintenance system for a digital communication network
09/26/1989CA1261495A1 Line terminating apparatus
09/26/1989CA1261476A1 Methods of installing and assigning control processors in a distributed-control communications system
09/26/1989CA1261444A1 Burst-switching communications system
09/26/1989CA1261443A1 Switching arrangements for digital telecommunications exchange systems
09/26/1989CA1261440A1 Control circuit for a centrex attendant console interface
09/26/1989CA1261083A1 Data transmission system
09/26/1989CA1260590A1 Architecture for distributed control telecommunication switching systems
09/26/1989CA1260588A1 Method and apparatus for establishing a wideband communication facility through a communications network having narrow bandwidth channels
09/26/1989CA1260586A1 Switching apparatus for burst-switching communications system
09/26/1989CA1260585A1 Link switch for a burst-switching communications system
09/26/1989CA1260584A1 Burst-switching method for an integrated communications system
09/26/1989CA1260583A1 Call distribution arrangement
09/26/1989CA1260573A1 Low power line driving digital transmission system
09/26/1989CA1260166A1 Digital signal channel distributor
09/26/1989CA1260124A1 Subscriber's line switching control system
09/20/1989EP0333340A1 Multiplexer
09/20/1989EP0333126A2 Private telecommunication exchange for broadband signal transmission
09/20/1989EP0333123A2 Modulary structured ISDN communication system
09/20/1989EP0332977A2 Method of establishing data transfer connexions in a telecommunication exchange
09/20/1989EP0332809A2 Digital communication switching system, especially a private branch exchange, for speech, data, pictures, video telephony, etc.
09/20/1989EP0332625A1 Digital telephone switching exchange, particularly for private systems (pabx).
09/19/1989US4868812 Shared lines equipment, especially for B-ISDN switching system
09/19/1989CA1259718A1 Optical local area network using a common optical carrier with separate user angle modulation
09/13/1989EP0332345A2 Codecs with suppression of multiple encoding/decodings across a connection
09/13/1989EP0332197A2 A ring transmission system
09/12/1989US4866708 Communication channel ownership arrangement
09/12/1989US4866703 Integrated services digital network module
09/12/1989US4866700 Digital switching system
09/12/1989US4866668 Multiple memory loading system based on multilevel lists
09/12/1989CA1259419A1 Sound transmission method for data way system
09/06/1989EP0331531A2 Telephone apparatus and a method of controlling same
09/06/1989EP0331205A2 Transmission system of a packet signal in a integrated network system using a frame format flexible for various forms of the integrated network system
09/06/1989EP0331190A2 Method for controlling address parameters for interconnecting LAN and ISDN
09/05/1989US4864557 Automatic refresh of operating parameters in equipment with volatile storage
09/05/1989US4864556 Synchronization arrangements for a digital telecommunications exchange system
08/1989
08/30/1989EP0330274A1 DC supply for an S-bus in ASDN
08/30/1989CN1035221A Interprocessor switching network
08/29/1989US4862452 Digital signal processing system
08/29/1989US4862451 Method and apparatus for switching information between channels for synchronous information traffic and asynchronous data packets
08/24/1989WO1989007870A1 Process for identifying peripheral devices
08/24/1989DE3804283A1 Telecommunications switching network for voice, video and data
08/23/1989EP0158673B1 Plural communication channel protocol support systems
08/22/1989US4860287 Network having a synchronizer for synchronization between a primary and a remote station
08/22/1989US4860285 Master/slave synchronizer
08/22/1989CA1258692A1 Optical communication system
08/15/1989US4858227 Space and time having multiplexed memories
08/15/1989US4858226 Method for the operation of an interface circuit between a central portion and local portions of a subscriber termination module of a digital time multiplex telecommunications network
08/15/1989US4858224 Diagnostic method of equipment and system using the same
08/15/1989US4858223 Security arrangement for a telecommunications exchange system
08/15/1989US4858222 Circuit arrangement for serial data transmission
08/15/1989CA1258548A1 System and method for defining and providing telephone network services
08/10/1989DE3901557A1 Switching device for digital multiplex signals
08/02/1989EP0325794A2 ISDN system with a subscriber line multiplexer for establishing different D-channel links
08/02/1989EP0325716A2 Method for connecting small-band and wide-band terminals to a wide-band subscriber line of a digital exchange
08/02/1989CN1034460A Error correction method in switch and switch provided with error correction means
08/01/1989US4853957 Telecommunication switching systems with a central switching and local sub-switching
08/01/1989US4853949 Fail safe voice system for integrated services for digital network subscribers
08/01/1989US4853931 Violating All Zero Octet (VAZO) detector for a zero byte time slot interchange (ZBTSI) encoder
07/1989
07/27/1989DE3829051A1 Terminal identification control circuit
07/26/1989EP0325318A2 Switching exchange
07/26/1989EP0325220A1 Time-switching system
07/25/1989US4852159 Circuit arrangement for a module in the exchange of a digital TDM telecommunications network
07/25/1989US4852158 Telephone system allowing hold releasing request from central office line
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