| Patents for H04Q 3 - Selecting arrangements (38,975) |
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| 09/14/1988 | EP0281758A1 Digital interface for an integrated subscriber terminal unit |
| 09/13/1988 | CA1242039A1 Interface channel unit |
| 09/13/1988 | CA1241996A1 Self-routing switch node combining electronic and photonic switching |
| 09/07/1988 | WO1988006831A1 Rearrangeable multiconnection switching network |
| 09/07/1988 | WO1988006829A1 Improvements relating to pipeline sort matrices |
| 09/07/1988 | WO1988006828A1 Signal switching processor |
| 09/07/1988 | EP0280895A1 Digital interface between at least two subscriber terminal units and a processing unit |
| 09/07/1988 | CN88100917A Wideband/multislot switching apparatus |
| 09/06/1988 | US4769834 Inter-exchange carrier access |
| 09/06/1988 | US4769833 Wideband switching system |
| 08/31/1988 | EP0280090A1 Coupling arrangement for multistage coupling fields in telecommunication exchanges, especially time division multiplex telephone exchanges with coupling multiples and interconnection lines which interconnect these multiples from coupling stage to coupling stage |
| 08/31/1988 | CN88200163U Operator-less vocal answer-back number selecting subscriber telephone exchange device |
| 08/25/1988 | WO1988006393A1 Optical space switch |
| 08/25/1988 | WO1988005995A2 An optical switching arrangement |
| 08/24/1988 | EP0279679A1 Optical space switch |
| 08/24/1988 | EP0164406B1 Fast circuit switching system |
| 08/23/1988 | US4766596 Method and circuit arrangement for the transmission of data signals between control devices connected to one another via a loop system |
| 08/23/1988 | CA1241120A1 Alternate mark inversion (ami) receiver |
| 08/18/1988 | DE3703723A1 Method for setting up a specific subscriber connection by means of dialling information with different numbers of digits |
| 08/17/1988 | EP0278450A2 An optical matrix switch |
| 08/17/1988 | CN88100083A Control system for interunit communication |
| 08/16/1988 | US4764949 Subscriber/craftsperson ringback apparatus |
| 08/16/1988 | US4764919 Virtual PBX call processing method |
| 08/11/1988 | WO1988005986A1 Bidirectional optical space switch |
| 08/11/1988 | WO1988005985A1 Automatic speech recognition to select among call destinations |
| 08/10/1988 | EP0277779A1 Optical space switch |
| 08/10/1988 | CN87107775A Line condition data collection system in telephone exchange |
| 08/09/1988 | US4763354 Key telephone system |
| 08/09/1988 | US4763353 Terminal based adjunct call manager for a communication system |
| 08/09/1988 | US4763350 Facility for detecting and converting dial information and control information for service features of a telephone switching system |
| 08/09/1988 | US4763348 Controlled power supply for key telephone system |
| 08/09/1988 | US4763317 Digital communication network architecture for providing universal information services |
| 08/09/1988 | US4763316 Circuit arrangement for centrally controlled time division multiplex telecommunication exchange facilities |
| 08/09/1988 | US4763191 Dial-up telephone network equipment for requesting an identified selection |
| 08/09/1988 | US4763122 Parallel switching with round robin priority |
| 08/09/1988 | CA1240432A1 Telephone subscriber line interface circuit with reduced power watchkee ping mode |
| 08/09/1988 | CA1240399A1 Duplex controller synchronization circuit |
| 08/09/1988 | CA1240395A1 Arrangement in terminal systems |
| 08/03/1988 | EP0276754A1 Communication routing method for a digital time division exchange network |
| 08/03/1988 | EP0276622A2 Broker's call arrangement |
| 08/03/1988 | EP0276421A1 Circuit arrangement for telecommunication exchanges, especially telephone exchanges, with a network of positions and connection bundles of channels starting therefrom, which can be individually occupied per connection |
| 08/02/1988 | US4761808 Time code telephone security access system |
| 08/02/1988 | US4761779 Subscriber's line switching control system |
| 08/02/1988 | US4761050 Optical switching device including polarization preserving coupler utilizing Kerr effect and method of using same |
| 08/02/1988 | CA1240088A1 Solid state trunk circuit |
| 08/02/1988 | CA1240082A1 Baseband local area network using ordinary telephone wiring |
| 07/27/1988 | EP0275448A1 Method for putting into operation a programme-controlled modular communication system |
| 07/20/1988 | EP0275076A2 Control system for communication between units |
| 07/20/1988 | EP0274800A1 Multistage switching system for switching N1 input channels to N2 output channels |
| 07/20/1988 | EP0274715A2 Method for load distribution among the central processors of the multiprocessor's central control unit of a switching system |
| 07/19/1988 | US4759016 TDMA communication system having common local path medium and local time slot for intraoffice calls |
| 07/19/1988 | US4758981 Signal sorting element with internal signal address value sorting criterion |
| 07/12/1988 | US4757521 Synchronization method and apparatus for a telephone switching system |
| 07/12/1988 | US4757267 Telephone system for connecting a customer to a supplier of goods |
| 07/12/1988 | CA1239213A1 Telephone system port communication method and apparatus |
| 07/12/1988 | CA1239212A1 Reliable broadcast protocol for a token passing bus network |
| 07/12/1988 | CA1239209A1 Communication system having abbreviated dialing access |
| 07/07/1988 | DE3643912A1 Circuit arrangement for telecommunications switching systems with direct dialling |
| 07/06/1988 | CN85109286B Multi-purpose speech-sound/data system |
| 07/05/1988 | US4756020 Method and apparatus for disallowing the extension of a call through a network |
| 07/05/1988 | US4756019 Traffic routing and automatic network management system for telecommunication networks |
| 07/05/1988 | US4756018 Multiple access communication system having loop-check circuitry for switching intraoffice connections |
| 07/05/1988 | CA1238968A1 Communication switching system |
| 07/05/1988 | CA1238967A1 Automatic route selection of a private telephone network path on the basis of a public telephone network number |
| 07/05/1988 | CA1238966A1 Automatic redialing arrangement for multi-line telephone station sets |
| 06/30/1988 | WO1988004872A1 Rearrangeable multiconnection switching networks constructed using combinatorial designs |
| 06/30/1988 | DE3642849A1 Method for decentralised identification of overloads in central control devices of communications switching systems, in particular telephone switching systems |
| 06/28/1988 | US4754480 Circuit arrangement for telecommunication switching systems connected to line concentrator sub-exchanges by connecting channels |
| 06/28/1988 | US4754479 Station number portability |
| 06/28/1988 | US4754475 Calling line tracing system and identification detector |
| 06/28/1988 | CA1238735A1 Method and apparatus for sharing operators among assistance systems |
| 06/28/1988 | CA1238733A1 Low resistance origination scan circuit |
| 06/23/1988 | DE3642923A1 Circuit arrangement for telecommunications switching systems, in particular videophone switching systems, with the setting-up of broadband links |
| 06/21/1988 | US4752951 Method of providing location dependent person locator service |
| 06/21/1988 | US4752777 Delta network of a cross-point switch |
| 06/21/1988 | CA1238402A1 Digital switching network for switching signals of different bit rates |
| 06/15/1988 | EP0271274A2 Implied principal busy status indicator for covered calls |
| 06/15/1988 | EP0271169A2 Method and circuit arrangement for a decentralised replacement network |
| 06/15/1988 | EP0161300B1 Multimode data communication system |
| 06/14/1988 | US4751728 Telephone call monitoring, metering and selection device |
| 06/14/1988 | US4751698 Serial link adapter for a communication controller |
| 06/14/1988 | CA1238129A1 Subscriber line signalling device for use in a telecommunications system |
| 06/09/1988 | DE3640849A1 Multi-stage switched distribution network for switching through broadband signals |
| 06/08/1988 | EP0270185A2 Broadband multiple field with interconnections on a conductor plate with multiple layers in microstrip technique |
| 06/07/1988 | US4750202 Non-blocking concentrator |
| 06/07/1988 | US4750170 Line access apparatus for in-band communication |
| 06/07/1988 | US4750136 Communication system having automatic circuit board initialization capability |
| 06/07/1988 | CA1237805A1 Telephone switching system adjunct call processing arrangement |
| 06/07/1988 | CA1237804A1 Trunk call processing services for host computers interconnections |
| 06/01/1988 | DE3634781C1 Circuit arrangement for monitoring connections which are on hold in telephone switching systems constructed as multiple broker's facilities |
| 05/31/1988 | US4748661 Circuit for translating telephone numbers |
| 05/31/1988 | US4748660 Process for determination of the last intermediate node in a network of numerous interconnected nodes |
| 05/31/1988 | US4748658 Architecture for allocating resources in a telecommunications network |
| 05/31/1988 | US4748656 Personal computer--as an interface between a telephone station set and a business communication system |
| 05/26/1988 | EP0138950A4 A distributed prioritized concentrator. |
| 05/25/1988 | EP0268231A2 Line condition data collecting system for a telephone exchange |
| 05/25/1988 | EP0164362B1 Method for customer definable telephone capability |
| 05/24/1988 | US4747127 Telecommunication switching system |
| 05/24/1988 | US4747124 PBX telephone call control system |
| 05/24/1988 | US4746921 Broadband signal space switching apparatus |