Patents
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Patents for H04Q 3 - Selecting arrangements (38,975)
01/1992
01/02/1992EP0463918A1 Switching device with a distributed structure and passive coupling
01/02/1992EP0463832A2 Control and interface apparatus for telephone systems
01/02/1992EP0463831A2 Key telephone interface
01/02/1992EP0463634A2 Wavelength-time-space division switching system
01/02/1992EP0463207A1 Program-controlled communications system
01/02/1992DE4105290A1 Communications peripheral selection information memory - with transfer of selection information indicated on optical display for use as call repetition information
12/1991
12/31/1991US5077788 System and method for processing telephone communication
12/31/1991US5077735 Method and an apparatus for mutually converting different signaling systems
12/31/1991US5077727 Broadband information communications network system with coherent optical data transmission lines
12/31/1991US5077554 Control system for communication between units
12/31/1991US5077483 Network topology for reduced blocking and photonic system implementation thereof
12/27/1991WO1992000643A1 Line interface circuit
12/27/1991EP0462890A2 Communications systems
12/27/1991EP0462649A2 Circuit for switching a telephone device between a voltage ringing generator and a power supply circuit
12/26/1991WO1991020148A1 Routing of network traffic using discrete traffic measurement data
12/26/1991WO1991020143A1 Switching element and method for controlling the same
12/18/1991EP0461519A2 Optical switching element
12/17/1991US5073929 Voice-data telephonic control system
12/17/1991US5073890 Remote agent operation for automatic call distributors
12/17/1991US5073775 Broadband signal switching equipment
12/12/1991DE4017962A1 Connecting digital communication network to analogue network - starting time generator on each digit from subscriber to starting exchange of digital network
12/11/1991EP0460843A2 Network planning tool
12/11/1991EP0460816A2 Method and apparatus for dynamic and interdependent processing of inbound calls and outbound calls
12/11/1991EP0460405A2 Method for the automatic establishment of interconnections for data, speech and announcements in communication exchanges
12/11/1991EP0460404A2 Method for data transmission in communication exchange
12/11/1991EP0460403A2 Method for data transmission in communication exchange
12/10/1991US5072439 High speed opto-electronic crossbar switch
12/10/1991US5072217 One-sided crosspoint switch with distributed control
12/10/1991US5071232 Optical deflection element and space optical matrix switching device
12/10/1991CA1293042C Communication system supporting remote operations
12/10/1991CA1293040C Building security system
12/04/1991EP0459345A1 Management method of a database network
12/04/1991CN1056785A 呼叫处理 Call Processing
12/04/1991CN1015042B Marker
12/03/1991US5070525 Method for avoiding call blocking
12/03/1991US5070524 Telephone system
12/03/1991US5070498 Call control system in atm switch
12/03/1991US5070453 System and method for scheduling data transfers among a plurality of data processing units to avoid conflicting data requests
12/03/1991CA1292816C Telephone system allowing hold releasing request from central office line
11/1991
11/28/1991WO1991018485A1 Code word recognition unit and its use
11/27/1991EP0458704A1 FIFO buffer
11/27/1991EP0458516A2 Memory access bus arrangement
11/27/1991EP0458235A1 Self routing ATM multiple path switching network with availability signalling
11/27/1991EP0457974A1 An optical interconnection arrangement
11/27/1991CN1014950B System for connecting optical lines to wideband telecommunications exchanger
11/26/1991US5068892 Telecommunications system
11/26/1991CA1292588C Subscriber line interface circuit
11/26/1991CA1292551C Optical switch
11/21/1991EP0457239A1 Structure of data processing automaton
11/21/1991EP0456947A1 Hybrid switching system for a communication node
11/21/1991EP0456731A1 Optical computers and optical interconnections
11/21/1991DE4019537C1 Information handling system for telephone exchange - stores entered telephone numbers into respective memory location for each subscriber
11/19/1991US5067153 Method for transmitting subscriber data in communication systems from one secret subscriber equipment to another
11/19/1991US5067148 Method and apparatus for planning telephone facilities networks
11/19/1991US5067127 Congestion avidance control system and method for communication network
11/19/1991US5067074 Control of overload in communications networks
11/17/1991CA2042615A1 Data processing automaton structure
11/14/1991WO1991017632A1 Location identification
11/14/1991WO1991017623A1 Line interface circuit with active tip and ring feed means
11/14/1991WO1991017616A1 Digital computer platform for supporting telephone network applications
11/14/1991WO1991017610A1 Nonblocking parallel banyan network
11/13/1991EP0456128A2 Method for diverting or forwarding calls in telephone exchanges
11/13/1991EP0455912A2 Electronic messaging system with multiple personal greetings
11/13/1991EP0455894A1 Impedance synthesis multiple loop using filtering means
11/13/1991EP0455893A1 Telecommunication line circuit
11/13/1991CN1056212A 线路接口电路 Line Interface Circuit
11/12/1991US5065399 Telecommunication network trouble recovery system
11/12/1991US5065393 Network controller billing system and method of operation
11/12/1991US5065392 Network controller scheduling system and method of operation
11/12/1991CA2041957A1 Telecommunication line circuit
11/12/1991CA2034419A1 Electronic messaging system with multiple personal greetings
11/12/1991CA1292077C Broadcasting messages in a distributed processing system
11/06/1991EP0455335A1 Subscriber line interface circuit
11/06/1991EP0454926A2 Drop testing in fiber to the home systems
11/06/1991EP0454884A1 Telephone exchange, in particular a private branch exchange with a central stored program computer control
11/06/1991CN1014668B Determining terminal port of distribution control switch system using distribution database
11/06/1991CN1014667B Selecting arrangements for multiplex systems
11/05/1991US5063592 Control of non-locally switched telecommunication services
11/05/1991US5063576 Coding and decoding method for asynchronous data signals and an apparatus therefor
10/1991
10/31/1991WO1991016781A1 Telecommunications system with timed-do-not-disturb
10/31/1991WO1991016780A1 Method of displaying circuit state of telephone exchange system
10/31/1991WO1991016779A1 Long distance telephone switching system with enhanced subscriber services
10/31/1991DE4013961A1 Building internal telephone installation - has one or more stations with access to exchange line and common entrance-door station for security
10/30/1991EP0454421A2 Improvements relating to telecommunications equipment
10/30/1991EP0454344A1 Interleaved receivers
10/30/1991EP0454332A2 Call processing in an intelligent network
10/30/1991EP0453831A2 User interfaces for telecommunications based services
10/30/1991CN1055854A Private telephone system with simplified command feature
10/29/1991US5062133 Multi-function telephone call management system
10/29/1991US5062103 Telephone agent call management system
10/29/1991CA1291549C Method and apparatus for self-healing and self-provisioning networks
10/25/1991CA2041003A1 Call processing
10/24/1991CA2222659A1 Long distance telephone switching system with enhanced subscriber services
10/23/1991EP0453129A1 High-speed time-division switching system
10/23/1991EP0452591A2 Method and apparatus for the billing of value-added communication calls
10/23/1991EP0452479A1 Automatic fault recovery in a packet network.
10/22/1991US5060258 Call traffic control
10/22/1991US5060255 Telecommunications system with timed-do-not-disturb
10/22/1991US5058972 Integrated semiconductor device including an optoelectronic switching element
10/17/1991WO1991015914A1 Method of and system for control of special services by remote access
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