Patents
Sitemap › H04 - Electric communication technique › H04Q - Selecting › H04Q 3 - Selecting arrangements
Patents for H04Q 3 - Selecting arrangements (38,975)
10/1990
10/16/1990US4963862 Terminal equipment identifier control circuit
10/10/1990EP0390976A1 Process for communication exchanges with audio frequency push-button dialing
10/10/1990EP0248812B1 Method and apparatus for efficient resource allocation
10/09/1990US4962525 Method for the use of a telephone system with common signaling channel for the casting of votes
10/04/1990WO1990011660A1 Switching system for application service
10/04/1990DE3910485A1 Method for automatic through-connection of a link between two terminals of a telephone system
10/03/1990EP0389887A2 Switching system with both-way line managing system
10/03/1990EP0389663A1 Switching device for broad-band signals
10/03/1990CN1009896B Key telephone system
10/02/1990US4961186 Communication channel reallocation
10/02/1990CA1274917A1 Method and apparatus for configuration modifications of a data processing system
09/1990
09/30/1990CA2013390A1 Exchanges
09/26/1990EP0388856A2 Coupling device for broad-band signals
09/26/1990CN1045672A Marker
09/25/1990US4959856 Automatic administration of a telecommunication system
09/25/1990US4959854 Apparatus and method for automatically reconfiguring telephone network resources
09/25/1990US4959849 End-to-end network surveillance
09/25/1990US4959830 Method and apparatus for through-connecting a wideband connection in a digital time switch
09/25/1990US4959650 Dual channel A/D and D/A converter with improved isolations
09/25/1990CA1274629A1 Operating a multiple-access optical network
09/19/1990EP0387789A2 Broadband switching matrix for delay equalization and elimination of inversion
09/19/1990EP0387788A2 Broadband switch matrix with non-linear cascading
09/18/1990US4958369 Key telephone system accommodating both digital and analog telephone networks
09/18/1990US4958343 Communication channel reservation
09/18/1990CA1274301A1 Telephone exchange
09/18/1990CA1274300A1 Line condition data collecting system for a telephone exchange
09/17/1990CA2011828A1 Broadband switch matrix with non-linear cascading
09/17/1990CA2011827A1 Broadband switching matrix for delay equalization and elimination of inversion
09/12/1990EP0386958A1 Dual rail dilated switching networks
09/12/1990EP0386772A2 Optical switch array capable of bidirectional signal transfer between plurality of terminals
09/12/1990EP0386607A2 A predictive access-controll and routing system for integrated services telecommunication networks
09/11/1990US4956861 Method and apparatus for addressee location
09/11/1990US4956840 Multistage digital switching network
09/11/1990US4956835 Method and apparatus for self-restoring and self-provisioning communication networks
09/11/1990CA1274009A1 Tdma communication system having common local path medium and local time slot for intraoffice calls
09/06/1990DE3906894A1 Wiring arrangement for a distributor in a telecommunications system
09/05/1990EP0385670A2 Spontaneous voice and data messaging
09/05/1990EP0385661A1 Optical interconnect networks
09/05/1990EP0384961A2 Method for the stepwise extension of a three-stage switching network
09/04/1990US4955047 Automated attendant with direct inward system access
09/04/1990US4955013 Operating a multiple-access optical network
08/1990
08/29/1990EP0384604A1 Optical interconnection systems
08/29/1990EP0383931A1 Method of automatically editing data for controlling a processor that carries out distributed control and a system using the same
08/29/1990EP0247118B1 Interface circuit
08/29/1990CN1009415B Control device of switch
08/28/1990US4953204 Multilocation queuing for telephone calls
08/28/1990US4953203 High capacity information forwarding system
08/28/1990US4953200 Private branch exchange capable of discriminating different types of telephone sets connected thereto
08/28/1990US4953195 Private branch exchange system with specific information transmitting function
08/28/1990US4953155 Current summed optoelectronic crossbar switch
08/28/1990US4952010 Optical space switch
08/25/1990WO1990010358A1 Optical interconnect networks
08/23/1990WO1990009615A1 Optical computers and optical interconnections
08/23/1990DE4005365A1 Speech control system for communication device
08/22/1990EP0382715A1 Switch path reservation arrangement.
08/21/1990US4951310 Automatic call distribution system
08/21/1990CA1273090A1 Method and apparatus for enhancing the operating capabilities of a telephone switching system
08/16/1990EP0382670A2 Voice applications generator
08/16/1990EP0382431A1 Communications network
08/16/1990EP0382430A1 Optical interconnection network
08/16/1990EP0382212A2 Multi-media information service center and multi-media communication system
08/14/1990US4949355 Test access system for a digital loop carrier system
08/14/1990US4949171 Commutation grid
08/14/1990US4949086 Broadband signal switching equipment
08/09/1990WO1990009725A1 Communications network
08/09/1990WO1990009708A1 Optical interconnection network
08/08/1990EP0381011A2 Transmission network with switchable nodes
08/08/1990EP0380851A2 Modular crossbar interconnections in a digital computer
08/08/1990EP0380798A2 Method for the representation of call data in a telephone exchange
08/07/1990US4947388 Cell switching system of asynchronous transfer mode
08/07/1990US4947134 Lightwave systems using optical amplifiers
08/01/1990EP0380189A2 Method and apparatus for performing an automated collect call
08/01/1990EP0380126A2 Wavelength-division switching system for optical frequency-shift keying signals
07/1990
07/31/1990CA1272279A1 Rearrangeable digital signal space division switching system
07/25/1990EP0195786B1 Telephone switching system adjunct call processing arrangement
07/25/1990CN1044198A Circuit for center controlling telecommunications exchange apparatus, particularly, pcm telephone exchange apparatus, with center conneting members and thereof connect with subconnecting members
07/25/1990CN1008962B Subscriber rf telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of rf channels
07/24/1990US4944029 Rearrangeable multiconnection switching networks constructed using combinatorial designs
07/24/1990US4943998 Intermeshed communication network
07/23/1990CA2007839A1 Method and apparatus for performing an automated collect call
07/18/1990EP0378195A2 Buffer device suitable for asynchronous transfer mode communication
07/18/1990EP0378122A1 Parallel time slot interchanger matrix and switch block module for use therewith
07/18/1990CN1008875B Control system for interunit communication
07/17/1990US4942601 Method of making a call reservation and sending an interrupt tone in a private branch exchange (PBX)
07/17/1990US4942599 Location identification
07/11/1990CA2007466A1 Parallel time slot interchanger matrix and switch block module for use therewith
07/10/1990US4941171 Electronic private branch exchange
07/04/1990EP0376556A2 Real-time network routing
07/04/1990EP0376545A2 Automated message retrieval system
07/04/1990EP0376544A2 Path allocation arrangement for multi-terminal groups
07/04/1990EP0376542A2 Improved telecommunications database accessing method
07/04/1990EP0376527A2 Remote agent operation for automatic call distributors
07/04/1990EP0376526A2 Telephone agent management information system
07/04/1990EP0376525A2 Automated call handling apparatus
07/04/1990EP0376517A2 Telephone agent call management system
07/04/1990CN1043596A Electronic system for packet switching
07/03/1990US4939774 Method for controlling a digital telephone set and a telephone set based on the same
07/03/1990US4939718 Routing method and packet switching networks having a distance indicator for routing
06/1990
06/27/1990EP0375119A2 Improved method and apparatus for customer account servicing
06/27/1990EP0374928A2 Packet congestion control method and packet switching equipment
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