Patents
Patents for H04M 11 - Telephonic communication systems specially adapted for combination with other electrical systems (53,055)
11/1988
11/29/1988US4788657 Communication system having reconfigurable data terminals
11/29/1988CA1245761A1 Apparatus for monitoring and displaying activity of an information processing system
11/24/1988EP0268667A4 A telephone line monitoring system.
11/23/1988EP0292355A1 Method for exchanging data according to two formats between a data host and a terminal, and data host for carrying out the method
11/22/1988US4787063 Acquisition and transmission system for a recorder and a computer center
11/22/1988US4787045 Postage meter recharging system
11/17/1988EP0291307A2 Line interface
11/15/1988US4785448 System for communicating digital data on a standard office telephone system
11/10/1988DE3813498A1 System for telemetering (remote metering) the electric power consumption of different loads (consumers)
11/09/1988EP0289590A1 Portable electronic information card and communications system and method
11/09/1988EP0289554A1 Remote transaction system
11/08/1988CA1244537A1 Switching system and method for network having a plurality of terminal control equipment units
11/03/1988WO1988008655A1 Remote confinement system
11/03/1988WO1988008648A1 Method for dynamically allocating data channels on a trunked communication system
11/02/1988EP0289047A2 Bar code generating apparatus for image communication terminal device
11/01/1988US4782512 Interfacing data units to a telephone line
11/01/1988US4782511 Interactive medical laboratory specimen apparatus system
11/01/1988US4782498 Modem with improved handshaking capability
11/01/1988US4782480 Telephone line access apparatus
10/1988
10/26/1988EP0287570A1 Telephone line interface option module
10/26/1988CN87216023U Automatic telephone answering device for weather forecast
10/25/1988CA1243741A1 Communication system having reconfigurable data terminals
10/20/1988WO1988008183A1 Security system comprising a signal transmitter
10/18/1988US4779269 Efficient transmission mechanism integrating data and non coded information
10/13/1988DE3710091A1 Speech, ringing and opening system
10/12/1988EP0286295A2 Signaling arrangement
10/11/1988US4777646 Communication system
10/06/1988WO1988007796A1 Radio-signal responsive apparatus for controlling mobile equipment
10/06/1988DE3708975A1 Circuit arrangement for transmitting communications signals
10/04/1988US4775987 Broadband digital transmission systems
09/1988
09/28/1988EP0283473A1 A telemetry terminal.
09/27/1988US4774704 Interface circuit for connecting a digital equipment to a time multiplex link
09/21/1988EP0282567A1 Low voltage and low power detector circuits
09/20/1988US4773080 Data communication equipment
09/15/1988DE3722973C1 Hospital information system
09/14/1988EP0281578A1 Reset and synchronization interface circuit
09/13/1988US4771450 Method and apparatus for converting rotary signals to audiofrequency signals
09/13/1988US4771449 Data station termination circuit
09/07/1988WO1988006823A1 Internal communication system
09/07/1988WO1988006821A1 Digital communications system for an office telephone system
09/07/1988EP0281150A2 A paging system
09/06/1988US4769833 Wideband switching system
09/06/1988US4769719 Facsimile system
08/1988
08/31/1988EP0279884A1 Telephonic data access and transmission system
08/30/1988US4768144 Method and apparatus for retrieving information distributed over nonconsecutive pages
08/30/1988CA1241470A1 High speed automatic test apparatus especially electronic directory terminals
08/30/1988CA1241378A1 Multi-speed, full duplex modem
08/25/1988DE3712324C1 Monitoring circuit for an ancillary telephone device
08/17/1988EP0278451A2 Facsimile communication having call transfer means
08/16/1988US4764953 Method and apparatus for remote doorbell answering
08/16/1988US4764952 Telecommunications device for reading power meters
08/16/1988US4764922 Data terminal interface circuit to a telephone transmission line
08/09/1988US4763349 Monitoring apparatus using telephone link
08/09/1988US4763191 Dial-up telephone network equipment for requesting an identified selection
08/09/1988CA1240429A1 Communication system
08/03/1988EP0276992A2 Automatic dialer for accessing public network directly or via local network
08/03/1988EP0276296A1 Current-limiting circuit.
08/02/1988US4761811 Data and voice transmission using composite cables and punch-down blocks
08/02/1988US4761646 Method and system for addressing and controlling a network of modems
08/02/1988CA1240084A1 Multi-party line emergency access device
08/02/1988CA1240083A1 Computer access security device
08/02/1988CA1240082A1 Baseband local area network using ordinary telephone wiring
07/1988
07/28/1988WO1988004807A3 Remote services console for digital data processing system
07/27/1988EP0276167A2 Apparatus and method for flexible data base access
07/27/1988CN88100030A Digitally encoded intercommunication telephone system for neighbourhood telephone service
07/26/1988US4760593 Personal alarm system providing handsfree operation
07/26/1988US4760442 Wideband digital signal distribution system
07/20/1988EP0274954A1 Method for the transmission of information over lines and/or special networks, and installation for carrying out the method
07/19/1988US4759056 Personal-servicing communication system
07/19/1988US4759053 Facsimile/character communication system
07/19/1988US4758833 In a paging system
07/14/1988WO1988005241A1 User data display station
07/13/1988CN87103871A 话音和数据通信系统 Voice and data communications systems
07/12/1988US4757495 Speech and data multiplexor optimized for use over impaired and bandwidth restricted analog channels
07/12/1988CA1239236A1 Time independent data transmission system
07/12/1988CA1239210A1 Pbx security system for monitoring security guard tours
07/05/1988US4756018 Multiple access communication system having loop-check circuitry for switching intraoffice connections
07/05/1988US4755932 Interpreter program for providing commands to a computer application program
06/1988
06/30/1988WO1988004871A1 Talking device
06/30/1988WO1988004807A2 Remote services console for digital data processing system
06/29/1988CN87201489U Twelve-channel carrier telephone terminating machine with broadcast function
06/28/1988US4754476 Premises page/intercom system utilizing telephone set component
06/28/1988US4754474 Interpretive tone telecommunication method and apparatus
06/28/1988US4754473 Remote telephonic data transcribing system
06/28/1988US4754455 Telephone signal transmission device
06/21/1988US4752951 Method of providing location dependent person locator service
06/21/1988US4752950 Remote control system for franking machines
06/21/1988CA1238435A1 Frequency responsive apparatus for reading a meter over a telephone line
06/15/1988EP0161300B1 Multimode data communication system
06/14/1988US4751726 EKG telemetry base station
06/14/1988US4751698 Serial link adapter for a communication controller
06/14/1988US4751669 Videotex frame processing
06/08/1988EP0269683A1 System for text processing
06/07/1988US4750199 Coordinated multiple telephone station system
06/07/1988US4750170 Line access apparatus for in-band communication
06/07/1988US4750169 Telephone system and method for transmitting digital information
06/07/1988CA1237805A1 Telephone switching system adjunct call processing arrangement
06/01/1988EP0269494A1 Process and device for the remotely controlled editing of a television programme
06/01/1988EP0268667A1 A telephone line monitoring system.
05/1988
05/31/1988US4748656 Personal computer--as an interface between a telephone station set and a business communication system