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