Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 11 - Telephonic communication systems specially adapted for combination with other electrical systems
Patents for H04M 11 - Telephonic communication systems specially adapted for combination with other electrical systems (53,055)
07/1989
07/11/1989CA1257419A1 Network event identifiers
07/06/1989DE3744164A1 Voice communication and image and sound or text transmission via a telephone channel of a telecommunication or communication satellite for television and press reporting
07/05/1989EP0323083A1 Communication terminal apparatus
07/04/1989US4845773 Method and a system for remotely switching an electrically operated device by the use of signals generated by a telephone
07/04/1989US4845741 Modem ringing supression circuit
07/04/1989US4845739 Telephonic-interface statistical analysis system
07/04/1989US4845636 Remote transaction system
07/04/1989US4845486 Residential fuel-oil level reporting and alarm system
07/04/1989CA1257026A1 Message taking and retrieval system
07/04/1989CA1257022A1 Low speed gate circuit
06/1989
06/29/1989WO1989006083A1 Data transmission system
06/29/1989WO1989006079A1 Communication network
06/28/1989CN2040284U Two-way communication system utilizing catv system
06/27/1989US4843377 Remote confinement system
06/27/1989CA1256615A1 Personal computer - as an interface between a telephone station set and a business communication system
06/27/1989CA1256614A1 Signal processor communication interface
06/27/1989CA1256613A1 Personal alarm system providing handsfree operation
06/27/1989CA1256576A1 Enhanced videotex decoder apparatus
06/27/1989CA1256538A1 Bi-directional data telemetry system
06/22/1989DE3741788A1 Telephone set with a transmitting device
06/20/1989US4841562 Telephone VCR control
06/20/1989US4841561 Operating default group selectable data communication equipment
06/15/1989WO1989005553A1 System for interfacing an alarm reporting device with a cellular radio transceiver
06/14/1989EP0319672A1 Device for controlling electric appliances
06/14/1989EP0215905A4 Combined voice/data telephone system.
06/13/1989US4839919 Telephone and demodulator
06/13/1989US4839917 Universal line status monitoring and response system
06/13/1989CA1255823A1 Telephone system
06/07/1989EP0319491A1 Automatic system for phonic radio-transmission of meteorologic data in response to a coded inquiry by radio
06/07/1989EP0319193A2 Method and apparatus for identifying words entered on DTMF pushbuttons
06/07/1989EP0318661A2 Line connection switching apparatus for connecting communication line in accordance with matching result of speech pattern
06/07/1989CN1033341A Private automatic branch exchange
06/06/1989US4837811 Telephone technician's terminals
06/06/1989US4837808 Circuit connecting a voice-controlled device to a telephone station and line
06/06/1989US4837807 Station to station message arrangement
06/06/1989US4837806 Data communication process suitable for use in a quiet environment
06/06/1989US4837805 Opening command transmission system and method capable of reducing overhead in an information processing unit
06/06/1989CA1255407A1 Telephone line interface option module
06/01/1989WO1989005078A1 Optical communications network
06/01/1989WO1989005077A1 Optical communications network
06/01/1989WO1989005070A1 Optical communications network
06/01/1989WO1989005069A1 Optical communications network
06/01/1989WO1989004845A1 Nitrogen-containing esters of carboxy-containing interpolymers
05/1989
05/31/1989EP0318335A1 Fault location in optical communications networks
05/31/1989EP0318333A1 Stations for a digital communications network
05/31/1989EP0318332A1 Synchronisation of digital communications network
05/31/1989EP0318331A1 Scrambling in a digital communications network
05/30/1989US4835531 Automobile remote-control system
05/30/1989CA1254979A1 Telephone paging system and method
05/30/1989CA1254948A1 Wideband switching system
05/24/1989EP0317400A1 Apparatus and method for securing data exchange between a teletext terminal and a host
05/24/1989EP0317082A1 Spontaneous reporting of remotely generated data
05/24/1989EP0317059A2 Private automatic branch exchanges
05/23/1989US4833705 Data communication apparatus
05/23/1989US4833618 System for automatically reading utility meters from a remote location
05/23/1989CA1254686A1 Meter reader
05/18/1989WO1989004574A1 Telephone alerting system
05/17/1989EP0315653A1 Remote services console for digital data processing system.
05/17/1989CN2037905U Intelligent microphone of automatic wire telephone
05/16/1989US4831554 Postage meter message printing system
05/16/1989CA1254314A1 Telephone system and method for transmitting digital information
05/11/1989EP0292476A4 Low speed gate circuit.
05/10/1989EP0315326A2 Control of guided vehicles
05/09/1989US4829560 Communications system for use in a hotel/motel
05/09/1989US4829559 Facsimile apparatus with a mode for receiving non-image information
05/09/1989US4829555 TAD incorporated with VCR
05/09/1989US4829372 Presentation player
05/09/1989CA1253985A1 Voice mail system on audio tape
05/09/1989CA1253940A1 Digital local switching system
05/09/1989CA1253939A1 Graphics based call management
05/03/1989EP0313576A1 Gateway system and method for interconnecting telephone calls with a digital voice protected radio network.
05/02/1989CA1253625A1 Personal computer note-taking facility
04/1989
04/26/1989EP0313453A1 High impedance signal detection device
04/26/1989EP0312693A2 Method for speech encryption with simultaneous data transmission in narrow band transmission system
04/25/1989US4825465 Exclusionary device for coupling plural telephonic devices to a single central office trunk
04/25/1989US4825464 Successive key operating mechanism for telephone dialing
04/25/1989US4825463 Automatic dialer for accessing public network directly of via local network
04/25/1989US4825461 Data communication apparatus for data and/or speech communication on a plurality of communication lines
04/25/1989US4825457 Cellular network data transmission system
04/25/1989US4825456 Telephone system/paging system interface
04/25/1989US4825448 Subscriber unit for wireless digital telephone system
04/20/1989WO1989003627A1 Intelligent alarm apparatus with interfacing to a telephone network
04/19/1989EP0311643A1 Automatic meter reading system.
04/18/1989US4823375 Data communication apparatus cupable of disabling an output component when output of a type provided by that component is unnecessary
04/18/1989US4823373 Line switching control system for mobile communication
04/18/1989US4823343 Diagnostic system for remote computers
04/18/1989CA1252868A1 Interface unit for transferring voice and data signals
04/18/1989CA1252866A1 Communication system having voice and data capability
04/11/1989US4821309 Method of alarm to prevent vehicle thefts
04/11/1989US4821308 Telephone answering system with paging function
04/11/1989US4821027 Voice interactive security system
04/06/1989DE3732383A1 Auxiliary apparatus for a communications device
04/05/1989EP0310098A2 Communication system having telephonic function
04/05/1989EP0309993A2 Multimedia mail system
04/05/1989EP0309966A2 Facsimile circuit monitor system
04/05/1989EP0309627A1 Apparatus for connecting data processing equipment to a telephone network
04/04/1989US4819230 Optimized bandwith allocation mechanism between circuit slots and packet bit stream in a communication network
04/04/1989CA1252167A1 Apparatus for transmitting and receiving a power line carrier signal
03/1989
03/30/1989DE3740632A1 Transmitter device
03/29/1989EP0309355A1 Interactive video communication system
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