H04M 3 - Automatic or semi-automatic exchanges

Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881)
11/1992
11/10/1992	CA1310096C Call forwarding arrangement
11/10/1992	CA1310095C Method for generating additive combinations of pcm voice samples
11/10/1992	CA1310094C Additive pcm speaker circuit for a time shared conference arrangement
11/05/1992	DE4212102A1 Computergestuetztes fernsprechanwendungssystem Computergestuetztes automatic telephone application system
11/05/1992	DE4114702C1 Operating circuit for telephone party line - has respective call recognition units and identifies caller from direction of loop current
11/04/1992	EP0511831A2 Multiple integration apparatus
11/04/1992	EP0511497A2 Secure communication network
11/04/1992	EP0511483A2 Method and apparatus for authenticating users of a communication system to each other
11/04/1992	EP0427760A4 Method and apparatus for accessing a facsimile store and forward network
11/03/1992	US5161183 Overvoltage protection circuits
11/03/1992	US5161181 Automatic number identification blocking system
11/03/1992	US5161180 Call interceptor for emergency systems
11/03/1992	CA1309785C Line interface unit
10/1992
10/31/1992	CA2067315A1 Multiple integrations unit
10/29/1992	DE4113644A1 Operator guidance in telecommunication systems with distributed control - enables user to decide presentation of information at terminal without recourse to any additional operating procedures
10/29/1992	DE4113359A1 Program-controlled call-storing PBX - employs high-level data link control with call memory contg. DRAM chips and error correction circuits
10/28/1992	EP0511094A2 Telephone exchange apparatus
10/28/1992	EP0510861A2 Method of rerouting telecommunications traffic
10/28/1992	EP0510412A2 Voice and text annotation of a call log database
10/28/1992	EP0510411A2 Method and apparatus for handling incoming telephone calls
10/28/1992	EP0510222A1 Method for overload defence in an exchange of a communication network
10/28/1992	EP0510136A1 Estimative control system for a group of work stations.
10/27/1992	US5159626 Multi-line telephone switching system
10/27/1992	US5159600 Arrangement for generating an optimal set of verification test cases
10/27/1992	US5159594 Transparent communication of control information through a switching network
10/27/1992	US5159330 Broadband signal switching equipment constructed in accordance with field-effect transistor technology
10/27/1992	CA2067044A1 Broadband conference system
10/27/1992	CA1309479C Digital voice switch for a multi-port conference circuit
10/22/1992	DE4111331A1 Telephone system programmable or configurable from any station - incorporates central memory accessible in different modes for selective speech link establishment or program data processing
10/21/1992	EP0509706A2 Telephone communication system having an enhanced timing circuit
10/21/1992	EP0509705A2 Processing interactions among telecommunications call features
10/21/1992	EP0509510A2 Radio communication adapter connected to mobile station and mobile communication system using the radio communication adapter
10/21/1992	EP0509182A1 Multi-conference system
10/21/1992	EP0398987A4 Mmunications network state and topology monitor
10/20/1992	US5157759 Converter for synthesizing a speech signal
10/20/1992	US5157718 Interface adapter permitting tops position to function as directory assistance unit
10/20/1992	US5157716 Dynamic callback technique
10/20/1992	US5157714 Method for collecting and disseminating available-load information for the trucking industry
10/20/1992	US5157708 Portable telecommunications test instrument with line condition monitoring
10/20/1992	US5157660 Communication system including portable terminals and fixed terminals
10/20/1992	CA1308905C Computer-based training for telephone extension users
10/19/1992	WO1992019063A1 Method and system of combining signals in a telephone conference circuit
10/17/1992	WO1992019064A1 Method and apparatus for the ordering from remote locations
10/17/1992	CA2084768A1 Method of and apparatus for the ordering from remote locations, such as a home or office or the like, of merchandise and/or services from a central location such as a store or warehouse and the like
10/15/1992	WO1992017977A1 Remotely controlled apparatus for conditioning telephone line exclusive of metallic dc bypass pair
10/15/1992	WO1992017976A1 Telephone system communication mechanism employing central office sleeve lead
10/15/1992	WO1992017975A1 Confirming identity of telephone caller
10/15/1992	WO1992017950A1 Auxiliary communication service routing
10/14/1992	CN2119055U User program control telphone exchange
10/14/1992	CN1065368A Extension telephone automatic call dialed from different switchboard
10/14/1992	CN1018694B Call traffic control
10/13/1992	US5155763 Look ahead method and apparatus for predictive dialing using a neural network
10/13/1992	US5155761 Automatic call back system and method of operation
10/13/1992	US5155760 Voice messaging system with voice activated prompt interrupt
10/13/1992	CA1308813C Digital dictation system
10/13/1992	CA1308798C Voice and image teleconferencing system including paperless facsimilemeans
10/07/1992	EP0507505A2 Network signalling arrangement for controlling tandem network functions
10/07/1992	EP0507226A2 Protocol for transmitting messages in a network
10/07/1992	EP0507125A2 Method and apparatus for addressing users in a network
10/07/1992	EP0506951A1 Call interceptor
10/06/1992	US5153909 Resource control and data handling for central office based automatic call distributors
10/06/1992	US5153908 Automatic redial in a key telephone system having different line types
10/06/1992	US5153907 Telephone system gateway interface
10/06/1992	US5153906 Personal-servicing communication system
10/06/1992	US5153905 Priority voice message delivery system
10/01/1992	WO1992017039A1 Mobile access to telecommunications network
10/01/1992	WO1992017038A1 Beacon enhanced telecommunications system and method
10/01/1992	WO1992017037A1 Communications installation
10/01/1992	WO1992017021A1 Private telephone conferencing system with selection criteria capability
10/01/1992	WO1992017013A1 Digital communication system with transmission servers
09/1992
09/30/1992	EP0506544A1 Audio-visual telecommunication system including a terminal, a camera and a handset
09/30/1992	EP0505670A2 Method for testing a transmission link
09/30/1992	CN1064977A Intelligence controller for crossbar telephone switchboard of length-and-breadth system
09/29/1992	US5151935 Programmable universal signaling circuit for a telephone network
09/29/1992	US5151929 Computer-controlled radio-paging and telephone communication using recorded voice messages
09/26/1992	WO1993019516A1 Dc/dc/ac power supply
09/24/1992	DE4109534A1 Kommunikationsanlage Communication system
09/23/1992	EP0505092A2 Switch control methods and apparatus
09/23/1992	EP0504917A1 A cell broadcast method
09/23/1992	EP0504880A2 Mail center management system
09/23/1992	EP0504716A2 Method for the activation of an optical indicator in a communication apparatus connected to a switching exchange
09/23/1992	EP0504658A2 Method for the activation of an optical indicator in an analogic communication terminal connected to a communication equipment
09/23/1992	EP0383790A4 Telephone line communications control system
09/23/1992	CN1064776A 数字式多频信号接收器 Digital multi-frequency signal receiver
09/22/1992	US5150410 Secure digital conferencing system
09/22/1992	US5150405 Duplex structure signal transfer point system for common channel signalling system No. 7
09/22/1992	US5150402 Isdn terminal having diagnostic function
09/22/1992	US5150399 Public telephone interface and method of operating the same
09/22/1992	US5150271 Telecommunication equipment protector
09/22/1992	CA1307862C Telephone subscriber loop test system
09/21/1992	CA2063519A1 Automatic switching system for performing connection control between a plurarity of sets of subscriber terminals
09/17/1992	WO1992016068A1 Telephone exchange system
09/17/1992	WO1992016067A1 Method and apparatus for flexible and optimal telephone call acceptance and routing
09/17/1992	WO1992015986A1 Variable bit rate speech encoder
09/17/1992	DE4107897A1 Digital communication system with special terminals and procedures - employs network of decentralised server modules linking terminal multiplex concentrators via switch matrix to public networks
09/17/1992	CA2105387A1 Variable bit rate speech encoder
09/16/1992	EP0503528A2 Subscriber line interface circuit for ISDN and POTS applications, including echo canal cirenitry
09/16/1992	EP0503257A2 Control device of an apparatus, for example a telephone
09/16/1992	EP0503059A1 Wide area audio response network
09/16/1992	EP0502977A1 Satellite based simulcast paging system

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