Patents
Patents for H04Q 3 - Selecting arrangements (38,975)
12/1992
12/09/1992EP0517315A1 Optical reflective star coupler device
12/09/1992EP0517268A2 Method for load distribution in communication systems
12/09/1992EP0517037A2 Serially connectable network configuration module
12/09/1992CN1066948A Communication switching system
12/08/1992US5170273 Wavelength-division switching system for optical frequency-shift keying signals
12/08/1992US5170160 Broadband tree switch architecture for reducing pulse width narrowing and power dissipation
12/08/1992CA1311286C Digital key telephone system
12/02/1992EP0515980A2 Space-time switching stage
12/02/1992EP0515967A2 Application program interface
12/02/1992EP0349597B1 Improvements in electro optical switch architectures
12/01/1992US5168535 Integrated optic switch
12/01/1992US5168517 Apparatus and methods for selectively forwarding telephone calls
11/1992
11/26/1992WO1992019057A3 Method and apparatus for managing and facilitating communicationsin a distributed heterogeneous network
11/26/1992WO1992017986A3 Switching arrangement for public switched telephone and public radio mobile networks
11/26/1992WO1991004642A3 Serial array time-slot interchangers
11/25/1992EP0515296A1 Process and apparatus for managing network event counters
11/25/1992EP0515102A2 Automatic loss control circuit in a digital loop transmission system
11/25/1992EP0515057A2 Semiconductor integrated device for echo cancelling
11/24/1992US5166972 Group emergency call system
11/24/1992US5166894 Method and apparatus for cell loss rate estimation, call admission control, and buffer/link capacity designing in integrated network
11/24/1992CA2033880C Billing system for telephone signaling network
11/24/1992CA1310732C Routing of network traffic
11/24/1992CA1310731C Exchange system having originating call restriction function
11/24/1992CA1310730C Electronic switching system having call-forwarding function
11/24/1992CA1310727C Communication network system and method of controlling a communication network
11/24/1992CA1310726C Adaptive routing of network traffic
11/24/1992CA1310528C Optical space switch
11/19/1992EP0513101A1 Telecommunications line test system
11/17/1992US5165092 Method of processing the signalling information within configurable multiplexers
11/17/1992US5165080 Optical distributor
11/11/1992WO1992021190A1 Fault detection and isolation of fiber to the curb systems
11/11/1992EP0512704A2 Emergency call station identification system and method
11/11/1992EP0512143A1 Control arrangement for a broad band switching system
11/11/1992EP0512141A1 Procedure for switching high bit rate ATM data cell streams through a switching device with a lower bit rate
11/11/1992CA2108179A1 Fault detection and isolation of fiber to the curb systems
11/10/1992US5163087 Delivery of customer data base key using automatic number identification
11/10/1992US5163042 Exchange route decision system and method
11/10/1992US5162944 Optical space switch and network for such optical space switches
11/05/1992DE4212102A1 Computergestuetztes fernsprechanwendungssystem Computergestuetztes automatic telephone application system
11/04/1992EP0511831A2 Multiple integration apparatus
11/04/1992EP0511671A2 System for monitoring ATM cross-connecting apparatus by inside-apparatus monitoring cell
11/04/1992EP0511497A2 Secure communication network
11/04/1992EP0203165B1 Queueing protocol
11/03/1992US5161181 Automatic number identification blocking system
11/03/1992US5161180 Call interceptor for emergency systems
11/03/1992CA1309785C Line interface unit
10/1992
10/31/1992CA2067315A1 Multiple integrations unit
10/29/1992WO1992019060A1 Low delay or low loss cell switch for atm
10/29/1992DE4113644A1 Operator guidance in telecommunication systems with distributed control - enables user to decide presentation of information at terminal without recourse to any additional operating procedures
10/29/1992DE4113359A1 Program-controlled call-storing PBX - employs high-level data link control with call memory contg. DRAM chips and error correction circuits
10/28/1992EP0511094A2 Telephone exchange apparatus
10/28/1992EP0510861A2 Method of rerouting telecommunications traffic
10/28/1992EP0510411A2 Method and apparatus for handling incoming telephone calls
10/28/1992EP0510222A1 Method for overload defence in an exchange of a communication network
10/28/1992CN1018882B Asychronous optical communication system
10/27/1992US5159594 Transparent communication of control information through a switching network
10/27/1992US5159591 Packet communication method, packet communication device and packet switcher
10/27/1992US5159590 Multi-slot call relocation control method and system
10/27/1992US5159473 Apparatus and method for programmable optical interconnections
10/27/1992US5159330 Broadband signal switching equipment constructed in accordance with field-effect transistor technology
10/22/1992DE4112932A1 Optical waveguide ranking, coupling and switching system - incorporates matrix crosspoint couplers rotated or shifted into and out of optical paths between light guide ends
10/22/1992DE4112514A1 Async. TDM transmission system with two switch matrices - distributes cells of information in output matrix to reduce load on coupling blocks of main matrix
10/21/1992EP0509765A1 Radial bus assembly
10/21/1992EP0509705A2 Processing interactions among telecommunications call features
10/21/1992EP0509126A1 Message routing method towards target addresses in a multi-stage network through routing elements
10/21/1992EP0398987A4 Mmunications network state and topology monitor
10/20/1992US5157390 Method for providing network service in a communication system
10/20/1992CA2063050A1 Parallel processing system
10/20/1992CA1308945C Optical matrix switch
10/15/1992WO1992017986A2 Switching arrangement for public switched telephone and public radio mobile networks
10/14/1992EP0508811A2 Double buffer type elastic store comprising a pair of data memory blocks
10/14/1992EP0508378A2 Method and system for monitoring packet rate in packet network
10/14/1992CN1018694B Call traffic control
10/13/1992US5155837 For replacing software
10/13/1992US5155779 Optical circulating shift register
10/13/1992US5155763 Look ahead method and apparatus for predictive dialing using a neural network
10/13/1992US5155761 Automatic call back system and method of operation
10/13/1992US5155760 Voice messaging system with voice activated prompt interrupt
10/13/1992US5155728 Time division speech path apparatus
10/13/1992CA1308825C Terminal repeater having a function for repeating dc loop signal
10/12/1992WO1992019057A2 Method and apparatus for managing and facilitating communicationsin a distributed heterogeneous network
10/12/1992CA2108126A1 Method and apparatus for managing and facilitating communications in a distributed heterogeneous network
10/11/1992CA2065470A1 Method of and system for monitoring packet rate in packet network
10/09/1992CA2065515A1 Trade name telephone dialing system
10/07/1992EP0507505A2 Network signalling arrangement for controlling tandem network functions
10/07/1992EP0507457A1 System and method for controlling a multi-point matrix switch
10/07/1992EP0506951A1 Call interceptor
10/07/1992EP0364440B1 Switching network
10/06/1992US5153908 Automatic redial in a key telephone system having different line types
10/06/1992US5153907 Telephone system gateway interface
10/06/1992US5153843 Layout of large multistage interconnection networks technical field
10/06/1992US5153757 Network control arrangement
10/06/1992US5153578 Apparatus and method for establishing identical data in dual atm switches
10/01/1992WO1992017037A1 Communications installation
10/01/1992WO1992017013A1 Digital communication system with transmission servers
09/1992
09/30/1992EP0506136A2 Broadcast/switching apparatus for executing broadcast/multi-cast transfers over unbuffered asynchronous switching networks
09/30/1992EP0505695A2 All-node switch - an unclocked, unbuffered, asynchronous, switching apparatus
09/29/1992US5151934 Key telephone apparatus
09/29/1992US5151930 Method for personal paging a telephone private branch exchange with the assistance of a personal paging device that offers mutually different operating modes for personal paging
09/28/1992CA2039223A1 Method and apparatus for identifying valid cells in a redundant path combining unit of an asynchronous transfer mode switch