| Patents for H04Q 3 - Selecting arrangements (38,975) |
|---|
| 05/07/1991 | CA1283967C Broadband signal switching apparatus |
| 05/03/1991 | CA2011714A1 High speed packet resequencing system |
| 05/02/1991 | WO1991006187A1 Telephone system used for the distribution of advertising messages |
| 05/02/1991 | EP0425203A2 Virtual private line service |
| 05/02/1991 | EP0425202A2 Control of overload in communications networks |
| 05/02/1991 | EP0425163A2 Customer programmable automated integrated voice/data technique for communication systems |
| 05/02/1991 | EP0425161A2 Customer definable integrated voice/data call transfer technique |
| 05/02/1991 | EP0424877A2 Malicious call detection method and system |
| 05/01/1991 | CN2076286U Two-system communication switching arrangement |
| 04/30/1991 | US5012511 Method of and system for control of special services by remote access |
| 04/30/1991 | CA1283742C Subscriber line interface circuit and transformer therefor |
| 04/24/1991 | EP0424015A2 Multilocation queuing for telephone calls |
| 04/24/1991 | EP0423434A1 Multiprocessor computer with optical data switch |
| 04/24/1991 | CN2075839U Non-standard two hundred dilatation system for cross-bar exchanging machine |
| 04/24/1991 | CA2028258A1 Malicious call detection method and system |
| 04/23/1991 | US5010569 Telephone-call distributor |
| 04/23/1991 | US5010542 Multi-stage switching network for light waveguides |
| 04/23/1991 | US5009477 Optical interconnect arrangement |
| 04/18/1991 | WO1991005375A1 Method and apparaus for simulating an interconnection network |
| 04/17/1991 | EP0422014A1 Class marking apparatus for use in telephone exchanges |
| 04/17/1991 | CN1050803A 呼叫分配系统 Call Distribution System |
| 04/16/1991 | US5008930 Customer definable integrated voice/data call transfer technique |
| 04/16/1991 | US5008929 Billing system for telephone signaling network |
| 04/16/1991 | CA1283194C Signal switching system |
| 04/11/1991 | DE3932689A1 Activating telephone exchange night switch - using central memory to store allocations of switchboard positions to subscribers |
| 04/10/1991 | EP0421583A1 Call distribution system |
| 04/10/1991 | EP0421325A1 Asynchronous optical TDM-communication system |
| 04/10/1991 | EP0138950B1 A distributed prioritized concentrator |
| 04/10/1991 | CN1012325B Operation method for altering data processor and device thereof |
| 04/09/1991 | US5007080 Communication system supporting remote operations |
| 04/07/1991 | CA2027081A1 Call distribution system |
| 04/04/1991 | WO1991004642A2 Serial array time-slot interchangers |
| 04/03/1991 | EP0420527A2 Electronic messaging systems with additional message storage capability |
| 04/03/1991 | EP0420468A2 Method and apparatus for optical signal multiplexing/demultiplexing |
| 04/03/1991 | EP0420204A2 Method for the transmission of subscriber data from one secret subscriber to another in communication exchanges |
| 04/03/1991 | EP0419920A1 Circuit arrangement for a central controlled telecommunication exchange, especially a PCM telephone exchange, with a central coordination processor and decentralized terminal groups with group processors |
| 04/03/1991 | EP0419720A1 Fibre-optical telecommunication system with one or more optical switches inserted in the optical path |
| 04/02/1991 | US5005167 Multicast packet switching method |
| 04/02/1991 | CA1282506C Multiplexed data channel controlled telephone system |
| 04/02/1991 | CA1282480C Automatic speech recognition to select among call destinations |
| 03/27/1991 | EP0418831A2 Paging method in a private branch exchange with a paging device providing operation modes for paging different from each other |
| 03/26/1991 | US5003595 Secure dial access to computer systems |
| 03/26/1991 | US5003584 Method and apparatus for the billing of value-added communication calls |
| 03/26/1991 | US5003575 Method and apparatus for storing and forwarding voice signals with controlled access |
| 03/26/1991 | US5003554 Apparatus for the automatic in-circuit testing of coder/decoder telecommunications circuits and method therefor |
| 03/26/1991 | CA2025167A1 Method and apparatus for signal multiplexing/demultiplexing |
| 03/20/1991 | EP0417336A1 Switching device for broad-band signals |
| 03/20/1991 | EP0417083A1 Communication switching element. |
| 03/19/1991 | US5001740 Method and apparatus for starting switching system |
| 03/19/1991 | US5001710 Customer programmable automated integrated voice/data technique for communication systems |
| 03/19/1991 | US5001474 Switching matrix for telecommunication exchanges |
| 03/13/1991 | EP0416685A1 Method for monitoring, by means of a monitoring device, a downstream transmission medium containing a multiplicity of virtual, asynchronously time-shared transmission channels |
| 03/13/1991 | EP0416647A2 Optical interconnection apparatus |
| 03/13/1991 | EP0416129A1 Switching system for application service |
| 03/13/1991 | EP0138952B1 A self-routing switching network |
| 03/12/1991 | US4998791 Integrated optical switches with very high extinction ratios |
| 03/12/1991 | CA2024871A1 Broadband signal switching equipment constructed in accordance with field-effect transistor technology |
| 03/12/1991 | CA1281397C Circuit arrangement for telecommunications switching systems, particularly telephone switching systems with information processing switching device and processing load limiting |
| 03/06/1991 | CN1011938B Number seeking and tansfering in distributing control system |
| 03/05/1991 | US4998242 Virtual tributary cross connect switch and switch network utilizing the same |
| 03/05/1991 | US4998101 Broadband signal switching matrix network |
| 03/05/1991 | CA1281112C Communication system having automatic call route selection |
| 02/27/1991 | CN1049587A Subscriber circuit capable of suppressing in-phase induced noise |
| 02/26/1991 | US4996710 Side-tone adjusting system and method for key telephone system establishing a plurel kinds of speaking paths |
| 02/26/1991 | US4996708 Key telephone system adapted to respond to information stored in a portable outpulser |
| 02/26/1991 | US4996705 Telemarketing |
| 02/26/1991 | US4996704 Electronic messaging systems with additional message storage capability |
| 02/21/1991 | WO1991002420A1 Communication switching element and method for transmitting variable length cells |
| 02/19/1991 | US4995033 Digital private branch exchange and method of manufacturing same |
| 02/19/1991 | CA1280497C Switching element for self-routing multistage packet- switching interconnection networks |
| 02/19/1991 | CA1280496C Virtual pbx call processing method |
| 02/19/1991 | CA1280465C Optical backplane |
| 02/13/1991 | EP0412692A1 Dynamic graphical analysis of network data |
| 02/13/1991 | CN1049257A Message switching arrangements |
| 02/13/1991 | CN1011652B Protection arrangement for telephone subscriber line interface circuit |
| 02/12/1991 | US4993016 Network control arrangement for processing a plurality of connection requests |
| 02/12/1991 | US4993014 Communications |
| 02/07/1991 | WO1991001600A1 Digital added main line system |
| 02/06/1991 | EP0411798A2 End-to-end network surveillance |
| 02/06/1991 | EP0411742A2 Message switching arrangements |
| 02/06/1991 | EP0411674A2 Call control system in ATM switch |
| 02/06/1991 | EP0411562A2 A fast packet and frequency switch |
| 02/06/1991 | CN1049079A Digital added main line system |
| 02/05/1991 | US4991204 Adaptive routing control method |
| 02/05/1991 | US4991203 Line switching apparatus and method |
| 02/05/1991 | US4991196 Testing communications systems |
| 02/05/1991 | US4991168 Concurrent multi-stage network control arrangement |
| 02/03/1991 | CA2014198A1 Message switching arrangements |
| 01/31/1991 | DE3925497A1 Second branch office equipment with control sequence memory - in which procedural information is addressed according to signal combination with different equipment and function criteria |
| 01/30/1991 | EP0410657A2 Apparatus and method for processing a freephone number telephone call |
| 01/30/1991 | EP0410139A2 ATM switching system having dual ATM switch structure |
| 01/30/1991 | EP0410096A2 A wavelength division photonic switch |
| 01/29/1991 | US4989130 System for determining and storing valid status information received from cross coupled unit |
| 01/29/1991 | US4989022 Rearrangeable multiconnection switching networks constructed using combinatorial designs |
| 01/29/1991 | US4988993 Rearrangeable multiconnection switching networks constructed using combinatorial designs |
| 01/29/1991 | US4988209 Telephone agent management information system |
| 01/29/1991 | CA1279717C Communication facilities access control arrangement |
| 01/24/1991 | DE3923169A1 Connection overload interruption for centrally controlled exchange - has warning sound or message delayed from start of call interruption |
| 01/24/1991 | DE3922401A1 Determining device for signalling packets - has superior order multiprocessor and several individual processing for determination |
| 01/23/1991 | EP0408843A1 Computer controlled telecommunications exchange |