H04Q 3 - Selecting arrangements

Patents for H04Q 3 - Selecting arrangements (38,975)
01/1989
01/17/1989	CA1249086A1 Three relay c.o. trunk interface
01/10/1989	US4797915 Communication system having automatic call route selection
01/10/1989	US4797913 Direct telephone dial ordering service
01/10/1989	US4797904 Transmitter for ISDN S-bus interface circuit
01/10/1989	US4797875 Method for monitoring and controlling the traffic in digital transmission networks
01/10/1989	CA1248617A1 Parallel call processing system and method
01/10/1989	CA1248616A1 Telephone switching system switch processor interface
01/04/1989	CN1030169A Protection arrangement for telephone subscriber line interface circuit
01/03/1989	US4796292 Data transmission over the public switched network
01/02/1989	EP0229170A4 Statistical analysis system and method for use with public communication facility.
12/1988
12/28/1988	CN88103726A Subscriber line interface circuit and transformer therefor
12/28/1988	CN88102621A Telecommunication relay apparatus for centralized control, particularly circuit system of pcm telephone exchange, system having central unit and connected relay group
12/27/1988	US4794641 Data transmission system of key telephone system
12/21/1988	EP0295822A2 Subscriber line interface circuit and transformer therefor
12/21/1988	EP0295470A2 Method for a calculator controlled switching device especially for a so called key telephone exchange with the possibility of call transfer
12/20/1988	US4792969 Line condition data collecting system for a telephone exchange
12/20/1988	US4792968 Statistical analysis system for use with public communication facility
12/20/1988	US4792967 PBX DID and E and M tie trunk integration adapter and method
12/20/1988	US4792921 Data processing node
12/20/1988	US4792801 Broadband signal space coupling device
12/14/1988	EP0295022A2 Call control of a distributed processing communications switching system
12/14/1988	EP0294644A1 Method for operating of a circuit arrangement for a centrally controlled telecommunication exchange, especially a PCM telephone exchange, with a central part and with connection groups connected to this central part
12/13/1988	US4791666 Automatic intercept system interface for electromechanical telephone central office
12/13/1988	US4791665 In a telephone communication system
12/13/1988	US4791663 Telephone status recognition and bypass system
12/13/1988	US4791662 Controlling key-system groups from a distributed control switching system
12/08/1988	DE3716633A1 Circuit arrangement for telecommunications systems, in particular telephone switching systems, in each case with a plurality of processors and memories
12/07/1988	EP0293876A2 Method for a private branch exchange with two trunk lines comprising a main telephone set and a plurality of extension telephone sets
12/07/1988	EP0293875A2 Method for a private branch exchange with two trunk lines comprising a main telephone set and a plurality of extension telephone sets
12/06/1988	US4790005 Circuit arrangement for telecommunications switching systems, particularly telephone switching systems with information processing switching device and processing load limiting
12/06/1988	US4790004 Implied principal busy status indicator for covered calls
12/06/1988	US4789999 Line circuit for coupling a subscriber set to a switching facility to provide a complex impedance match
12/06/1988	CA1246200A1 Arrangement for an electromechanical space switching network
12/06/1988	CA1246199A1 Method for controlling a multistage space switching network
12/06/1988	CA1246198A1 Controller for a multistage space switching network
12/01/1988	WO1988009587A1 Subscriber/craftsperson ringback apparatus
12/01/1988	DE3717381A1 Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with an at least partially meshed network of channel groups and with routing devices
12/01/1988	DE3716594A1 Circuit arrangement for telecommunications systems, in particular telephone switching systems, with storage devices in which the correctness of stored information portions is checked
11/1988
11/30/1988	EP0292686A2 Line delay compensation arrangement for digital transmission systems utilizing low-power line drivers
11/30/1988	CN88201601U Apparatus for switching and controlling by dialing telephone number
11/29/1988	US4788721 Routing of network traffic
11/29/1988	US4788718 Call data collection and modification of received call distribution
11/29/1988	US4788682 Telephone system adapted to telemarketing
11/29/1988	US4787692 Electro optical switch architectures
11/24/1988	DE3715877A1 Method for controlling a special telephone system with branch lines
11/23/1988	EP0291815A1 Method for limiting the traffic flow based on incoming call attempts in a telecommunication exchange
11/22/1988	CA1245305A1 Full-duplex one-sided cross-point switch
11/22/1988	CA1245303A1 Reflex optoelectronic switching matrix
11/17/1988	WO1988008993A1 Integrated solid state non-volatile fiber optic switchboard
11/17/1988	EP0291169A1 Protection arrangement for a telephone subscriber line interface circuit
11/17/1988	EP0291135A2 Concentrator stage for a broadband switching network
11/16/1988	CN88102480A Emergency d.c. power supply with emergency state being indicated by polarity reversal
11/16/1988	CN87201286U Electronic decoder for exchange office number of electro-mechanical telephone exchange system
11/15/1988	US4785473 Interactive audio telecommunications message storage, forwarding and retrieval system
11/15/1988	US4785446 Distributed bit switching of a multistage interconnection network
11/15/1988	US4785299 Broadband signal space switching apparatus
11/15/1988	US4785298 Circuit arrangement for telecommunications systems, particularly telephone switching systems, comprising an information interrogating device which cyclically drives inquiry locations
11/15/1988	CA1244978A1 Single line telephone communication system
11/15/1988	CA1244924A1 System for interconnecting a pair of communication systems
11/08/1988	US4783850 Optoelectronic compound switching matrix
11/08/1988	US4783796 PBX telephone call control system
11/08/1988	CA1244541A1 Communication system having separate unidirectional information signalling
11/08/1988	CA1244540A1 Digital switching system
11/08/1988	CA1244537A1 Switching system and method for network having a plurality of terminal control equipment units
11/02/1988	EP0289387A1 Direct current power supply aided by an emergency condition indication by inversion
11/02/1988	EP0288462A1 Routing of network traffic.
11/01/1988	US4782519 Method and apparatus for enhancing the operating capabilities of a telephone switching system
11/01/1988	US4782517 System and method for defining and providing telephone network services
11/01/1988	US4782514 Key telephone system
11/01/1988	US4782508 Method of discouraging the completion of wrong-number calls
11/01/1988	US4782507 Monolithically integratable circuit for measuring longitudinal and transverse currents in a two-wire transmission line
11/01/1988	CA1244166A1 Interswitch line circuit
11/01/1988	CA1244118A1 Distributed control type electronic switching system
10/1988
10/25/1988	CA1243760A1 Path hunting in a distributed control switching system
10/18/1988	CA1243386A1 Processing sequence calls in a distributed control switching system
10/11/1988	US4777664 For a local optical fibre network
10/06/1988	WO1988007797A1 Telephone call monitoring, metering and selection device
10/06/1988	WO1988007313A3 Improvements in electro optical switch architectures
10/05/1988	EP0285003A2 Apparatus and method controlled to function in a series of states of operation for effecting data transfer in a communication system
10/04/1988	US4776007 Solid state trunk circuit
10/04/1988	US4776006 Multiplexed data channel controlled telephone system
10/04/1988	US4775975 Dial tone detection arrangement with a detection notification feature
10/04/1988	CA1242809A1 Data storage system
09/1988
09/28/1988	EP0284571A2 A so-called switching voltage regulator for an interface circuit in a telephone subscriber line
09/27/1988	US4774721 Cable pair to telephone number verification system
09/22/1988	WO1988007314A1 Process for operating a multiprocessor central control unit of a relay system
09/22/1988	WO1988007313A2 Improvements in electro optical switch architectures
09/22/1988	WO1988007299A1 Switching arrangement
09/21/1988	EP0283296A2 Signal switching system
09/21/1988	EP0282923A2 Parallel switching with round robin priority
09/21/1988	CN88101362A Systemfor maintaining hardware-software compatibility of modular communication system
09/20/1988	US4773065 Communication network system
09/20/1988	CA1242263A1 Switching system with video switching matrix
09/14/1988	EP0282268A1 Optical matrix switches
09/14/1988	EP0282228A1 Improvements relating to pipeline sort matrices
09/14/1988	EP0282227A1 Signal switching processor
09/14/1988	EP0282198A2 Communications system and components and methods for use therein
09/14/1988	EP0282149A2 A system for maintaining the hardware-software compatibility of modular communication system
09/14/1988	EP0282071A2 Optical switching system
09/14/1988	EP0281888A2 Circuit arrangement for the subscriber line circuits of a digital time division multiplex telecommunication exchange

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