H04Q 1 - Details of selecting apparatus or arrangements

Patents for H04Q 1 - Details of selecting apparatus or arrangements (11,745)
01/1989
01/24/1989	US4800588 Telephone network interface system
01/24/1989	US4800587 Telephone line protector with line disconnect and an entrance terminal assembly incorporating a plurality of protectors
01/24/1989	US4800465 Fuse panel mounting plate
01/17/1989	CA1249034A1 Method and apparatus for shedding load in a communications controller of a data communications system
01/10/1989	US4797931 Audio frequency signal identification apparatus
01/10/1989	US4797124 Connector bodies and assemblies
01/05/1989	DE3814727A1 Universal digital MFC receiver
01/03/1989	US4796290 Ground start circuit
01/03/1989	US4796289 Multi-line network interface
01/03/1989	US4796287 Digital loudspeaking telephone
12/1988
12/29/1988	WO1988010528A1 Shorted-coaxial-cable detector for local-area networks
12/21/1988	EP0296095A2 Connecting set for cable-pairs of the telecommunications engineering
12/21/1988	EP0295855A2 Rotary dial pulse receiver
12/21/1988	CN88103411A Terminal connectors for pair-cable in electrocommunication system
12/20/1988	US4792985 Transmitters and systems for tone-in-band transmission
12/20/1988	CA1247224A1 Telephone distribution frame connector assembly
12/13/1988	US4790770 Connector bank for cable wires, in particular of telephone cables
12/06/1988	CA1246197A1 Switching system having tone trunk
12/06/1988	CA1246196A2 Multipriority communication system
12/01/1988	DE3715773A1 Method for operating remote-controllable measuring stations via the trunk dialling network
11/1988
11/24/1988	EP0268667A4 A telephone line monitoring system.
11/24/1988	DE3716843A1 Circuit arrangement for a signal conversion device
11/22/1988	CA1245335A1 High density connector for main frames in telephone systems
11/15/1988	US4784609 Jack module with lamp assembly
11/08/1988	CA1244541A1 Communication system having separate unidirectional information signalling
11/08/1988	CA1244538A1 Dtmf receiver sense and control arrangement
11/01/1988	US4782523 Tone detection process and device for implementing said process
11/01/1988	US4782480 Telephone line access apparatus
11/01/1988	US4781613 Connection unit for telephone line
11/01/1988	CA1244166A1 Interswitch line circuit
10/1988
10/19/1988	EP0286835A1 Method and circuit for setting subscriber line balance impedances of programmable hybrids
10/12/1988	EP0061462B1 Multi-system portable paging device
10/05/1988	EP0284734A2 Circuit for the recognition of dual tone multifrequency signals in telephone exchanges
10/05/1988	EP0116069B1 Bi-vertical main distributing frame connector
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
09/27/1988	US4773867 Premise distribution cross connect apparatus
09/21/1988	EP0283429A2 Circuitry for the signalisation of a call for a terminal apparatus connected to a digital telephone network
09/21/1988	EP0282577A1 Energy management system.
09/20/1988	US4772562 Jackfield with split front panel
09/15/1988	DE3707240A1 Distributor for telecommunication systems
09/15/1988	DE3707239A1 Distributor for telecommunication systems
09/15/1988	DE3706689A1 Circuit arrangement for telecommunication systems, in particular telephone exchange systems, having central switching devices, decentralised switching elements and multi-conductor lines which connect the said switching devices to the said switching elements in a plug-in fashion
09/13/1988	US4770639 Channelized jackfield
09/13/1988	CA1242039A1 Interface channel unit
09/08/1988	DE3706101A1 Distribution frame for telecommunication systems
08/1988
08/31/1988	EP0280172A2 Digital device for generating PCM signals, in particular for digital telephone, data processing or image processing systems
08/30/1988	US4767338 Printed circuit board telephone interface
08/30/1988	CA1241471A1 Apparatus for generating a multi-frequency signal
08/23/1988	US4766521 Connecting blocks for telephone systems
08/23/1988	CA1241080A1 Insulation displacement connector terminal block
08/17/1988	EP0278289A2 Testing device for a broadband switching network
08/16/1988	US4764966 Method and apparatus for voice detection having adaptive sensitivity
08/16/1988	US4764950 Snap-on network interface unit
08/16/1988	US4764918 Telecommunication switching system
08/16/1988	US4764849 Data bus distribution apparatus
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	US4763226 Connecting blocks and mounting arrangements for telephone systems
08/09/1988	CA1240432A1 Telephone subscriber line interface circuit with reduced power watchkee ping mode
08/02/1988	US4761811 Data and voice transmission using composite cables and punch-down blocks
07/1988
07/26/1988	CA1239719A1 Dial tone detector
07/19/1988	US4759057 Telephone modular distributing frame
07/19/1988	US4758921 Grounded surge protection unit for telephone subscriber circuits
07/12/1988	US4757267 Telephone system for connecting a customer to a supplier of goods
06/1988
06/29/1988	CN87108174A Connector bank for telecommunication devices
06/28/1988	US4753610 Connectorized terminal block
06/23/1988	DE3642342A1 Wall-mounted central station for small telephone systems
06/22/1988	EP0272200A2 Connecting block for the telecommunications
06/21/1988	US4752249 Access panel and fanning strip for telephone distribution frame
06/21/1988	US4752107 Forward facing wire wrap
06/14/1988	CA1238130A1 Subscriber line interface
06/14/1988	CA1238128A1 Digital multifrequency signal receiver
06/08/1988	EP0270185A2 Broadband multiple field with interconnections on a conductor plate with multiple layers in microstrip technique
06/07/1988	US4750170 Line access apparatus for in-band communication
06/07/1988	US4749359 Security override network interface device
06/01/1988	EP0268667A1 A telephone line monitoring system.
05/1988
05/31/1988	US4748541 Modular contact system for telephone cable head
05/31/1988	CA1237502A1 Communications system with protection switching and channel identities
05/24/1988	US4747131 Dial tone detector
05/24/1988	US4747020 Wire distribution apparatus
05/24/1988	US4747018 Carrier for electronic circuit boards
05/24/1988	CA1237209A1 Call signal detecting device
05/24/1988	CA1237190A1 Modular cross-connect panel
05/17/1988	CA1236907A2 System for accessing electrical circuits and relay switch thereof
05/17/1988	CA1236905A2 System for accessing electrical circuits and access switch thereof
05/10/1988	US4743999 Rotary telephone line surge protector and system
05/05/1988	DE3636435A1 Holder for splice magazine
05/04/1988	EP0265837A2 Circuit arrangement, its application and testing method for a message communication network
05/03/1988	US4742541 Telecommunications interface with protector modules
05/03/1988	US4742537 Telephone line monitoring system
05/03/1988	US4742534 Telephone receiving equipment for recognizing predetermined combinations of voice-frequency signalling components
05/03/1988	US4742251 Precise call progress detector
05/03/1988	US4741711 Modular distribution frame including protector modules adapted for break access testing
04/1988
04/26/1988	US4741032 Container for telephone network interface device
04/20/1988	EP0264239A2 An arrangement for linking multistage switching matrices
04/20/1988	CN87107027A Arragement for linking multistage switching matrices
04/13/1988	EP0263420A2 Apparatus for testing electrical conductors in distribution frames for telecommunication exchanges
04/13/1988	EP0263282A2 Signalling receiver
04/12/1988	US4737987 Circuit for evaluating call signals in a telecommunication system
04/12/1988	US4737985 Digital system connect frame

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