Patents for H04Q 3 - Selecting arrangements (38,975) |
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07/30/1991 | CA1287196C Subscriber/craftsperson ringback apparatus |
07/30/1991 | CA1287152C Inter-network connection system |
07/24/1991 | CN1053338A Method of managing traffic flows in wideband integrated services digital telecommunications network, and network for implementing method |
07/23/1991 | US5034915 Data storage system for transferring last entered information from static memory to magnetic disk upon recovering from data storage interruption |
07/23/1991 | CA1286761C Rearrangeable multiconnection switching networks employing both space division and time division switching |
07/23/1991 | CA1286760C2 Pbx intercept and caller interactive attendant bypass system |
07/23/1991 | CA1286759C Telephone toll service with advertising |
07/23/1991 | CA1286757C Call data collection and modification of received call distribution |
07/23/1991 | CA1286751C Switching arrangement |
07/17/1991 | EP0437256A2 Automatic number identification blocking system |
07/17/1991 | EP0436958A2 Cell signal processing circuit and optical switch apparatus using the same |
07/17/1991 | EP0436799A2 Communication network with key distribution |
07/16/1991 | US5033081 Key telephone system |
07/16/1991 | US5033076 Enhanced privacy feature for telephone systems |
07/16/1991 | US5032837 Method for expanding N×N three-stage switching network to 2N×2N three-stage switching network |
07/10/1991 | EP0436201A1 Method for searching for alternate path in communication network |
07/10/1991 | EP0436069A2 Method and device for switching fixed-length packets such as ATM cells |
07/10/1991 | CN1013164B Total data communication exchange system |
07/09/1991 | US5031211 Communication circuit switching or parallel operation system |
07/09/1991 | US5031094 Switch controller |
07/03/1991 | EP0435669A2 Output stage for telephone interface circuit and telephone interface circuit |
07/03/1991 | EP0435448A2 Arrangement for routing packetized messages |
07/03/1991 | EP0435296A1 Optical space switch and network with such optical space switches |
07/03/1991 | CN1013069B Multi-link chip |
07/02/1991 | US5029196 Automated call screening |
07/02/1991 | US5029165 Method of allotting links and routing messages for a common channel type signalling transfer point |
07/02/1991 | US5029161 Maintenance system for subscriber terminal management data in a packet switched network |
06/27/1991 | WO1991009480A1 Synchronous-asynchronous converter |
06/27/1991 | DE3942146A1 Message segment transmission circuit between subscriber stations - separates portion of address from each message segment forwarded to common path for all transmission operations |
06/27/1991 | DE3942139A1 Multiprocessor system e.g. for digital telephone station - performs readiness check of each sub-processor by master processor before assigning addresses |
06/26/1991 | EP0434629A2 Method and apparatus for processing the signalling information within configurable multiplexers |
06/26/1991 | EP0433964A2 Name resolution in a directory database |
06/26/1991 | EP0433465A1 Personal communication system |
06/25/1991 | US5027387 Reverse direction calling system |
06/25/1991 | US5027384 Personalized automatic call routing |
06/25/1991 | US5027358 Switch-adjunct communications protocol |
06/25/1991 | US5027346 Node apparatus for parallel communication |
06/23/1991 | CA2030909A1 Name resolution in a directory database |
06/19/1991 | EP0433256A2 Telecommunication combination comprising a switched telecommunication network and a portable radio terminal |
06/19/1991 | EP0433154A1 Synchronous-asynchronous converter |
06/19/1991 | EP0433078A2 Data transfer method and apparatus |
06/18/1991 | CA1285055C Three-stage coupling arrangement |
06/18/1991 | CA1285053C T1 line format for robbed signaling for use with ccitt 32k bit per second adpcm clear channel transmission |
06/18/1991 | CA1285020C Direct current power supply with an emergency supply activated by a polarity reversal |
06/18/1991 | CA1284904C Optical space switch |
06/16/1991 | WO1991009506A1 Telecommunication combination comprising a switched telecommunication network and a portable radio terminal |
06/15/1991 | CA2019019A1 Method and system for high speed data transfer |
06/14/1991 | CA2032101A1 Synchronous to asynchronous converter |
06/13/1991 | WO1991009483A1 Anonymous interactive telephone system having direct connect feature |
06/12/1991 | EP0431748A2 Telephony system and method for providing ANI and DNIS |
06/12/1991 | EP0431438A1 Flow control procedure for a broadband integrated services digital telecommunication network, and network to realize the procedure |
06/12/1991 | EP0396589A4 Method and apparatus for automatic loading of a data set in a node of a communication network |
06/11/1991 | US5023904 Direct telephone dial ordering service |
06/11/1991 | US5023863 Optical switching system |
06/11/1991 | US5023606 Programmable logic device with ganged output pins |
06/11/1991 | CA1284845C Communication system using unbalanced communication paths |
06/09/1991 | WO1991009478A1 Optical fibre communications system |
06/05/1991 | EP0430569A1 Fault tolerant interconnection networks |
06/05/1991 | EP0430534A1 Control of non-locally switched telecommunication services |
06/05/1991 | EP0430516A2 A periodic array with a nearly ideal element pattern |
06/05/1991 | EP0429882A2 Low-end high-performance switch subsystem architecture |
06/04/1991 | US5022069 Modular automatic telephone switching system |
06/04/1991 | US5022067 Telephone call security system |
06/04/1991 | US5022026 Method of throughconnecting wideband connections in a digital time switch module between subscribers, and a device for carrying out the method |
06/04/1991 | US5022025 Self-routing switch and its routing method |
06/04/1991 | US5022024 Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
06/01/1991 | CA2004375A1 Statistical measurement equipment and telecommunication system using same |
05/30/1991 | WO1991007838A1 Remote access telephone control system |
05/29/1991 | EP0429046A2 Wavelength division switching system with reduced optical components using optical switches |
05/29/1991 | EP0288462B1 Routing of network traffic |
05/28/1991 | US5020099 Private branch exchange |
05/23/1991 | DE3937621A1 Telephone exchange with distributed processor systems - provides multiple plug-in positions to enable connections to bus systems |
05/22/1991 | EP0306520A4 Telephone call monitoring, metering and selection device |
05/21/1991 | US5018195 Fully integrated telecommunication network |
05/21/1991 | US5018194 Electronic switching system having call-forwarding function |
05/21/1991 | US5018131 Optical switch |
05/21/1991 | US5018129 Dual rail dilated switching networks |
05/16/1991 | WO1991007045A1 System for placement of a long distance telephone carrier point-of-presence and call routing |
05/15/1991 | EP0427689A1 A method and apparatus for switching data information through a digital selector |
05/15/1991 | EP0426739A1 Process for the acquisition of data concerning the network in a digital transmission network and such a digital transmission network. |
05/15/1991 | EP0426737A1 Adaptive routing of network traffic. |
05/14/1991 | US5016243 Automatic fault recovery in a packet network |
05/14/1991 | CA1284204C Routing of network traffic |
05/11/1991 | WO1991007857A1 A method and apparatus for switching data information through a digital selector |
05/11/1991 | WO1991007854A1 Generalised connection network |
05/08/1991 | EP0426356A2 Telecommunications network route selection |
05/08/1991 | EP0426355A2 Route based network management |
05/08/1991 | EP0425807A1 One-sided crosspoint switch with distributed control |
05/08/1991 | CN1051278A 异步光通信系统 Asynchronous optical communication system |
05/08/1991 | CN1012608B Telecommunication relay apparatus for telephone exchange system |
05/08/1991 | CN1012607B Subscriber line interface circuit and transformer therefor |
05/08/1991 | CN1012606B Communication switching network and switching element |
05/07/1991 | WO1991007040A1 Automatic fault recovery in a packet network |
05/07/1991 | US5014298 Voice-data telephonic control system |
05/07/1991 | US5014269 Microcomputer integrating a digital subscriber terminal for an integrated service digital network |
05/07/1991 | US5014268 Parallel time slot interchanger matrix and switch block module for use therewith |
05/07/1991 | US5014262 Apparatus and method for detecting and eliminating call looping in a node-by-node routing network |
05/07/1991 | US5014261 System for switching from working units to stand-by units |
05/07/1991 | US5013140 Optical space switch |
05/07/1991 | US5013113 Lossless non-interferometric electro-optic III-V index-guided-wave switches and switching arrays |