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)
05/1988
05/31/1988	US4748655 Portable telephones
05/31/1988	US4748654 Remote supervisory monitoring and control system
05/31/1988	CA1237545A1 Data and voice communications system
05/24/1988	US4747121 Remote control slide projector module
05/24/1988	US4747120 Automatic personnel monitoring system
05/24/1988	US4747073 Terminal for communication with a remote data processing system
05/24/1988	CA1237209A1 Call signal detecting device
05/18/1988	EP0267267A1 Hospital signaling and communications system
05/17/1988	CA1236943A1 Method and apparatus for controlling digital voice recording and playback over telephone lines and adapted for use with standard host computers
05/11/1988	EP0266965A2 Voiceband signal classification
05/11/1988	EP0266962A2 Voiceband signal classification
05/10/1988	US4743892 On-site personal monitoring system
05/05/1988	WO1988003294A1 Portable electronic information card and communications system and method
05/04/1988	EP0266151A2 Method and apparatus for coupling computer work stations
05/03/1988	US4742537 Telephone line monitoring system
05/03/1988	US4742536 Telephone monitor circuit and method
05/03/1988	US4742482 Modem controller
05/03/1988	US4742251 Precise call progress detector
05/03/1988	CA1236219A1 Analog signal verification circuit
04/1988
04/27/1988	EP0265272A2 Direct synthesis modem
04/27/1988	EP0264365A1 Remotely controlled telephone hold program system
04/26/1988	US4741022 Remote subscriber interaction system
04/26/1988	US4741020 Clerk paging system
04/26/1988	US4740963 Voice and data communication system
04/26/1988	US4740955 Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones
04/26/1988	US4740912 Quinews-electronic replacement for the newspaper
04/26/1988	US4740788 Method of providing location dependent visitor dispatching service
04/21/1988	WO1988002968A1 Telephone system with door intercom station
04/21/1988	WO1988002967A1 Remote transaction system
04/21/1988	WO1988002966A1 Automatic voice processing assisted customer information system
04/21/1988	DE3634564A1 Circuit arrangement for transmitting communication signals
04/20/1988	EP0264311A1 Method for the transmission of measurement data information, and apparatus for carrying out the method
04/20/1988	EP0264188A1 Improvements in call devices
04/19/1988	US4739509 Automated message chronicling system
04/19/1988	US4739402 Protocol converting apparatus for videotex system
04/13/1988	EP0263635A2 Apparatus for effecting market research with the aid of two-directional communication
04/12/1988	US4737986 Subscriber's line closing circuit
04/12/1988	US4737980 Computer data entry method and apparatus
04/12/1988	US4737776 Circuit for detecting cut telephone service line and transmitting signal over telephone trunk line
04/12/1988	US4737722 Serial port synchronizer
04/11/1988	EP0138988A4 Simultaneous transmission of speech and data over an analog channel.
04/06/1988	EP0262709A1 Telecommunication system including a central back-up memory
04/06/1988	EP0262603A2 An image processing device of multifunctional type
04/05/1988	US4736407 Computer assisted graphic teleconferencing method and apparatus
04/05/1988	US4736405 Communication system with operation-procedure guiding function by speech
04/05/1988	US4736402 Signaling arrangement
04/05/1988	US4736362 Programmable data-routing multiplexer
04/05/1988	CA1234937A1 Interactive educational system with voice reaction and access using tone-generating telephone
03/1988
03/30/1988	EP0261680A2 Telephon dictating apparatus
03/30/1988	EP0261392A2 Dual mode phone line interface
03/30/1988	EP0167590B1 Communication system having reconfigurable data terminals
03/30/1988	EP0138975A4 Simultaneous transmission of speech and data over an analog channel.
03/30/1988	CN87106170A Telecommunication network including central back-up memory
03/29/1988	US4734765 Video/audio information transmission system
03/29/1988	US4734764 Cable television system selectively distributing pre-recorded video and audio messages
03/29/1988	CA1234602A1 Paging universal remote control system
03/24/1988	WO1988002206A1 Communication interface
03/24/1988	WO1988002204A1 Low voltage and low power detector circuits
03/23/1988	EP0260788A2 Residential fuel-oil level reporting and alarm system
03/16/1988	EP0259717A2 Method for selective information transmission to a user group, and device for carrying out this method
03/16/1988	EP0259452A1 Voice, data or both over one telephone line in a t-1 carrier system
03/16/1988	EP0259447A1 Telecommunication network and methods relating thereto.
03/15/1988	US4731821 Single wire telephone intercommunication system
03/15/1988	US4731816 Ensemble modem structure for imperfect transmission media
03/15/1988	US4731810 Neighborhood home security system
03/15/1988	US4731782 Digital local switching system for integrated service digital network
03/15/1988	CA1234207A1 Multiple paths in a self-routing packet and circuit switching network
03/15/1988	CA1234206A1 Alternate self-routing packet switching node having fault detection capabilities
03/09/1988	EP0259053A2 Variable data compression announcement circuit
03/09/1988	EP0258716A2 Method of handshaking between two modems
03/09/1988	EP0258514A1 Optimized bandwidth allocation apparatus between circuit slots and packet bit stream in a communication network
03/08/1988	US4730312 Voice, data or both over one telephone line in a T-1 carrier system
03/08/1988	US4730311 Remote multiplexer for digital telephone system
03/02/1988	EP0258084A1 Paging apparatus connected to a telephone switch
03/02/1988	EP0257060A1 Low-powered remote sensor and telephone line transmitter
03/01/1988	US4729033 Data communication apparatus
03/01/1988	US4728948 Remote monitor and control system
02/1988
02/24/1988	CN87104107A Non-powered remote sensor
02/16/1988	US4726017 Multidrop data concentrator communication network
02/11/1988	WO1988001109A1 Reset and synchronization interface circuit
02/11/1988	WO1988001075A1 Current-limiting circuit
02/11/1988	DE3726366A1 Communication network and communication transmission process
02/11/1988	DE3634834C1 Hospital communications system
02/09/1988	US4724538 Emergency roadside telephone communications system
02/09/1988	US4724435 Bi-directional data telemetry system
02/03/1988	EP0254743A1 Pay-per-view catv system.
02/02/1988	US4723268 Dual mode phone line interface
02/02/1988	US4723267 Telephone line interface and dialer circuitry for telecommunications equipment
02/02/1988	CA1232379A1 Digital link for telephone station sets
01/1988
01/28/1988	DE3722954A1 Telephone communication system for transmitting/receiving hand-written image signals
01/28/1988	DE3620938A1 Method for user guidance and transmission of writing or drawings using a digital telephone station
01/26/1988	US4721955 Paging universal remote control system
01/21/1988	DE3623988A1 Circuit arrangement for videotex operation in telephone branch exchanges, particularly key-type and executive-secretary systems
01/21/1988	DE3623987A1 Circuit arrangement for the videotex operation in telephone branch exchanges, particularly key-type and executive-secretary systems
01/21/1988	DE3623572A1 Interactive videotex device with microprocessor-controlled interactive videotex decoder
01/19/1988	US4720858 Telephone handset/acoustic coupler adapter
01/19/1988	US4720851 Meter reader
01/19/1988	US4720849 Information display apparatus
01/19/1988	CA1231782A1 System, method, and station interface arrangement for playing video games over telephone networks
01/14/1988	WO1988000416A1 Gateway system and method for interconnecting telephone calls with a digital voice protected radio network

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