Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 3 - Automatic or semi-automatic exchanges
Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881)
10/1996
10/02/1996EP0734633A1 Network updating arrangement
10/02/1996DE19510844A1 Digital multiple way conference communication system
10/02/1996CN1132454A 通信系统 Communications systems
10/02/1996CN1132430A Adjunct call handling for accessing adjunct-based capabilities platform
10/01/1996US5561848 Two way paging system with answer-back function
10/01/1996US5561772 Expansion bus system for replicating an internal bus as an external bus with logical interrupts replacing physical interrupt lines
10/01/1996US5561737 Voice actuated switching system
10/01/1996US5561711 Predictive calling scheduling system and method
10/01/1996US5561707 Telephonic-interface statistical analysis system
10/01/1996US5561703 System and method for integration of a paging server into a private branch exchange environment
10/01/1996US5561700 Device for measuring analog telephony signals
10/01/1996CA2170086A1 Video and audio directory assistance
10/01/1996CA2104406C Bell signal generating circuit
10/01/1996CA2088083C Method for selectively controlling the propagation of dual tone multi-frequency signals within a telecommunication network
10/01/1996CA2086693C Data processing system, method and program for constructing host access tables for integration of telephony data with data processing systems
09/1996
09/28/1996CA2171076A1 Method for preventing fraud in an inband signalling telephony system and trunk module realizing such a method
09/26/1996WO1996029840A1 Device for adapting narrowband voice traffic of a local access network to allow transmission over a broadband asynchronous transfer mode network
09/26/1996WO1996029838A1 Updating subscriber data of a mobile communication system
09/26/1996WO1996029830A1 Service provision in a telecommunications network
09/26/1996WO1996029812A1 System for rerouting telephone traffic within a telecom network
09/26/1996WO1996029811A2 Communication system for detecting an unauthorized intruder terminal unit
09/26/1996WO1996029764A1 Cross-connect method and apparatus
09/26/1996WO1996025824A3 Universal demarcation point
09/26/1996CA2215043A1 Service provision in a telecommunications network
09/26/1996CA2214890A1 Cross-connect method and apparatus
09/26/1996CA2214128A1 Device for adapting narrowband voice traffic of a local access network to allow transmission over a broadband asynchronous transfer mode network
09/25/1996EP0734189A2 Radio data communication system using a plurality of radio communication systems
09/25/1996EP0734187A2 Updating call processing data in a telecommunications network
09/25/1996EP0734143A2 Telecommunications system with person/subscriber-associated identification
09/25/1996EP0734142A2 Mechanism for controlling test set to assert off-hook condition on telephone lines
09/25/1996EP0733908A2 Polarity display device
09/25/1996EP0733291A1 System and method for providing advanced intelligent network services
09/25/1996CN1131888A Mobile communication system and message output method therefor
09/25/1996CN1131859A Subscriber information service system
09/25/1996CN1131858A Method for reaching subscriber in telephone system
09/24/1996US5559878 Telephonic communications answering and callback processing system
09/24/1996US5559877 Automatic provisioning of trunking and routing parameters in a telecommunications network
09/24/1996US5559876 Conferencing circuit, and associated method, for automatically conferencing subscriber units together in a telephonic conference
09/24/1996US5559875 Method and apparatus for recording and retrieval of audio conferences
09/24/1996US5559873 Telephone privacy device with conference and indicator features
09/24/1996US5559868 In a telecommunications network
09/24/1996US5559867 Automated calling system with database updating
09/24/1996US5559858 Method and apparatus for delivering secured telephony service in a hydrid coaxial cable network
09/24/1996US5559857 System and method for recognizing and routing telephone calls involving hearing or speech impaired persons
09/24/1996US5559856 System and method for recognizing and routing telephone calls involving hearing or speech impaired persons
09/24/1996US5559855 System and method for recognizing and routing telephone calls involving hearing or speech impaired persons
09/24/1996US5559854 Subscriber's line testing apparatus
09/24/1996US5559803 Communication system using a bidirectional tree structure network
09/24/1996US5559793 Echo cancellation system and method
09/24/1996US5559721 Multi-media information transfer system
09/24/1996US5559625 Distributive communications network
09/24/1996US5559505 Security system providing lockout for invalid access attempts
09/24/1996CA2039000C Modem pooling system
09/24/1996CA1338613C Voice-operated service
09/21/1996CA2170665A1 Mechanism for controllably enabling test set to assert off-hook condition on telephone line in dependence upon detection of prescribed voltage level and absence of data traffic
09/19/1996WO1996028943A1 A method for determining the load induced by a routing verification test on a network
09/19/1996WO1996028942A1 Method of communication and connection control
09/19/1996WO1996028923A1 Routing incoming calls to a pbx in response to route requests from a host computer
09/19/1996CA2214004A1 Method of communication and connection control
09/19/1996CA2213822A1 A method for determining the load induced by a routing verification test on a network
09/18/1996EP0732837A1 Method for recognition of unauthorized use of subscriber lines by means of subscriber identification
09/18/1996EP0732826A2 Wireless variable bandwidth air-link system
09/18/1996EP0732027A1 Electronic book selection and delivery system
09/18/1996EP0732024A1 Voice enhancement system and method
09/18/1996EP0731940A1 Modular portable computer
09/18/1996EP0648404A4 Modular notebook computer.
09/18/1996CN1131492A Method for accomplishing connection
09/18/1996CN1131491A Method for permitting subscribers to change call features in real time
09/18/1996CN1131366A Apparatus and method for controlling collect call
09/18/1996CN1131365A Ringtrip judging circuit
09/17/1996US5557672 Channel interface unit
09/17/1996US5557670 In a communications system
09/17/1996US5557669 Channel interface unit
09/17/1996US5557668 Call distribution system with distributed control of calls and data distribution
09/17/1996US5557667 Method of operating a telecommunication network
09/17/1996US5557666 Method for displaying an absent-message in a private exchange system
09/17/1996US5557665 Telephone system
09/17/1996US5557660 Program-controlled communication system whereby a call request is simultaneously signaled at a plurality of communication terminal equipment
09/17/1996US5557659 Electronic mail system having integrated voice messages
09/17/1996US5557658 Communications marketing system
09/17/1996US5557652 Method of establishing cooperation with a functionality
09/17/1996US5557651 Signal generator for tracing multiple transmission lines
09/17/1996US5557616 Frame synchronization in a performance monitoring and test system
09/17/1996US5557547 Monitoring system status
09/17/1996US5557539 Apparatus and method for testing an interactive voice messaging system
09/17/1996US5557250 Telecommunications terminal block
09/17/1996US5557065 Overvoltage protectors sealed with gel
09/17/1996CA2085442C Mobile log-in capability featuring fixed physical translations and portable logical translations
09/17/1996CA2004274C Telephone agent management information system
09/12/1996WO1996027989A1 Interactive system for a closed cable network including an internet gateway and linked services
09/12/1996WO1996027970A1 Dc level control for an electronic telephone line card
09/12/1996WO1996027951A1 Method and apparatus for reducing residual far-end echo in voice communication networks
09/12/1996WO1996027835A1 Service management operation and support system and method________________________________________________________________________
09/12/1996WO1996021981A3 A hardware and data reduntant architecture for nodes in a communications system
09/12/1996WO1996020553A3 Unified messaging and long distance communication system
09/12/1996DE19508076A1 Integrated voice and data processing system circuit
09/12/1996CA2214725A1 Service management operation and support system and method
09/12/1996CA2214650A1 Interactive system for a closed cable network including an internet gateway and linked services
09/11/1996EP0731595A2 Off-hook detection apparatus
09/11/1996EP0731592A2 System and method for archiving voice messages
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