Patents
Patents for H04Q 3 - Selecting arrangements (38,975)
04/1992
04/14/1992US5105422 Circuit arrangement for information transmission
04/14/1992US5105420 Method and apparatus for reconfiguring interconnections between switching system functional units
04/14/1992US5105292 Asynchronous optical communication system
04/09/1992CA2052858A1 Digital telecommunications system
04/07/1992US5103449 Pbx transparent ani and dnis using vru
04/07/1992US5103220 Method of expanding a three-stage regular switching array
04/07/1992CA1298678C Line interface circuit
04/07/1992CA1298675C Method and apparatus for storing and forwarding voice signals with controlled access
04/07/1992CA1298633C Centrally controlled telecommunications exchange system
04/02/1992WO1992005671A1 Communication system, in particular isdn-capable telecommunications private automatic branch exchange
04/01/1992EP0478206A2 A procedure to initiate queuing in call processing
04/01/1992EP0477652A2 Priority controlled processing of information, especially of processes in a communication system
04/01/1992EP0477414A1 Modularly structured digital communications system with operator task oriented operational communications means
04/01/1992EP0477403A1 Broad-band signals, coupling device with a charge transfer circuit in the output lines
03/1992
03/31/1992US5101491 System means for synthesizing, generating and checking software for a computer
03/31/1992US5101451 Real-time network routing
03/31/1992US5101425 Operations monitoring system
03/31/1992CA1298116C Bidirectional optical space switch
03/27/1992CA2052157A1 Broadband signal switching equipment
03/25/1992EP0476213A1 Bit finder circuit
03/24/1992US5099511 Exchange system for incoming calls from direct-in lines
03/24/1992US5099510 Teleconferencing with bridge partitioning and other features
03/24/1992US5099509 Integration of voice store and forward facility
03/24/1992US5099497 Polarity detector for subscriber lines
03/24/1992US5099475 Switching system
03/24/1992US5099347 Fast packet and frequency switch
03/24/1992US5099235 Method for transferring data through a network of intelligent control stations using decentralized control techniques
03/24/1992CA1297973C Feature telephone integration device
03/19/1992WO1992004794A2 Alarm and test system for a digital main line
03/18/1992EP0475663A2 Communication link identifier
03/18/1992EP0475350A2 An ISDN D channel congestion control method
03/17/1992US5097528 System for integrating telephony data with data processing systems
03/17/1992US5097501 Key telephone interface
03/17/1992CA1297593C Fault tolerant ancillary messaging and recovery system and method within adigital switch
03/17/1992CA1297571C Rearrangeable multiconnection switching networks constructed using combinatorial designs
03/17/1992CA1297566C Implied principal busy status indicator for covered calls
03/12/1992DE4027560A1 Simplified telephone connection selection system - require input of only calling subscriber own exchange and called subscriber exchange
03/12/1992CA2051037A1 Exchange system handling an in-band signal
03/11/1992EP0474429A1 An asynchronous transfer mode switching arrangement providing broadcast transmission
03/11/1992EP0474283A1 ATM switching network
03/10/1992US5095505 Efficient flexible special service call processing
03/06/1992CA2050655A1 Asynchronous transfer mode switching arrangement providing broadcast mode
03/05/1992WO1992003792A1 Method and apparatus for routing and partitioning a multistage interconnection network and for determining network passability
03/04/1992EP0472775A1 Programm-controlled communications system, especially switching exchange
03/04/1992EP0447485A4 System for cross-connecting high speed digital signals
03/04/1992CN1059242A 线路接口电路 Line Interface Circuit
03/04/1992CN1015769B Error correction method in swtich and switch provided with error correction means
03/04/1992CN1015768B Full-duplex non-centric multichannel common type movable communication network
03/03/1992US5093875 Optical interconnection apparatus
03/03/1992US5093858 Method and apparatus for performing an automated collect call
03/03/1992US5093826 Method for the operation of a multi-processor central control unit of a switching system
03/03/1992US5093824 Distributed protocol for improving the survivability of telecommunications trunk networks
03/03/1992US5093743 Optical packet switch
03/03/1992CA1296796C Broadband signal switching equipment
02/1992
02/26/1992EP0472149A1 ATM switch using cell division
02/25/1992CA1296414C Inter-exchange carrier access selection feature for a pbx user
02/19/1992EP0471344A1 Traffic shaping method and circuit
02/18/1992US5090011 Packet congestion control method and packet switching equipment
02/18/1992US5089954 Method for handling conversational transactions in a distributed processing environment
02/11/1992US5088032 Method and apparatus for routing communications among computer networks
02/11/1992CA1295499C Optical space switch
02/11/1992CA1295498C Optical shuffle arrangement
02/06/1992WO1992002090A1 Method of controlling a digital coupling-field store
02/04/1992US5086462 Terminal repeater having a function for repeating DC loop signal
02/04/1992US5086461 Apparatus and method for providing existing 1ESS and 1AESS telephone switching equipment with the capability of using the SS7 protocol
02/04/1992US5086460 Communications system ingress and egress arrangement
02/04/1992US5086348 System for connecting optical lines to a wideband telecommunications exchange
01/1992
01/29/1992EP0468913A2 Modular public telephones operating system
01/29/1992EP0468802A2 Broadband switching networks
01/29/1992EP0468442A1 Interconnection network for the centre of a communication installation and installation provided with such a network
01/28/1992US5084816 Real time fault tolerant transaction processing system
01/28/1992CA2356441A1 Broadband switching networks
01/28/1992CA1295040C Optical switching system
01/23/1992WO1992001350A1 Method of establishing a cost-efficient communications path between internationally-remote parties
01/23/1992DE4023032A1 Controlling digital memory of multiple switching bay - using TDM procedure to establish connections including conference set=up via telephone exchange
01/22/1992EP0467569A1 Message network monitoring
01/22/1992EP0466948A1 Communications system with a multi-processor system serving as the central control
01/21/1992US5083308 Arrangement for determining switch port status at an adjunct processor
01/21/1992US5083269 Buffer device suitable for asynchronous transfer mode communication
01/19/1992CA2047262A1 Message network monitoring
01/16/1992DE4022027A1 Optisches datennetz hoher betriebssicherheit Optical data network high operational safety
01/15/1992EP0466590A1 Digital communication system for an integrated services telephone installation
01/15/1992EP0466467A2 A method of processing access service requests in data processing systems, such as telephone exchanges, and a distributed system applying said method
01/15/1992EP0466078A2 Subscriber connection unit with self routing for a telecommunication network having an intelligent network structure
01/15/1992EP0465532A1 High speed data packet switching circuit and method
01/14/1992CA1294346C Telephone system for connecting a customer to a supplier of goods
01/12/1992WO1992001341A1 Highly reliable optical data system
01/12/1992CA2087015A1 Highly reliable optical data system
01/11/1992WO1992001347A1 Digital communication system for integrated services telephone installations
01/09/1992WO1992000642A1 Enhanced telephony apparatus and system
01/09/1992DE4021587A1 Integrated coupling field module - has address inputs on two opposite sides receiving signals controlling connection paths between inputs and outputs
01/09/1992DE4020618A1 Signalling system for telephone return call connection - uses memory to hold call number data of calling subscriber
01/08/1992EP0465090A1 Congestion control for connectionless traffic in data networks via alternate routing
01/08/1992EP0464610A2 Method for generating an information for the called subscriber in a communication system, especially a private telecommunication system
01/08/1992EP0464425A2 Method for filing and retrieving data sets in a subscriber database
01/08/1992EP0464283A2 Arrangement for reserving and allocating a plurality of competing demands for an ordered bus communications network
01/08/1992EP0259447B1 Telecommunication network and methods relating thereto
01/07/1992US5079767 Method of multicast message distribution
01/07/1992US5079762 Asynchronous transfer mode switching network using waiting buffers for routing high service grade cells during congested traffic
01/07/1992US5079760 Method for efficient distributed data communications network access network configuration