| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
|---|
| 07/05/1994 | US5327492 Method for selectively controlling the propagation of dual-tone multi-frequency signals within a telecommunications network |
| 07/05/1994 | US5327491 Method for pacing calls to reduce nuisance calls |
| 07/05/1994 | US5327490 System and method for controlling call placement rate for telephone communication systems |
| 07/05/1994 | US5327489 Method and apparatus for monitoring a network for customer signaling during the term of a call |
| 07/05/1994 | US5327488 Remotely initiated telemetry calling system |
| 07/05/1994 | US5327486 Method and system for managing telecommunications such as telephone calls |
| 07/05/1994 | US5327485 Telephone lottery play system |
| 07/05/1994 | US5327484 Calling system for short duration data transactions |
| 07/05/1994 | US5327483 Cordless phone and cordless phone system using such cordless phone |
| 07/05/1994 | US5327433 Digital tandem channel unit interface for telecommunications network |
| 07/05/1994 | US5327418 Circuit arrangement for centrally controlled telecommunications exchanges |
| 06/30/1994 | CA2104925A1 Dynamic network automatic call distribution |
| 06/29/1994 | EP0604053A1 Multi-level conference management and notification |
| 06/29/1994 | EP0604047A1 Telephone terminal controlled conference inspection |
| 06/29/1994 | EP0604046A1 Unattended meet-me-conference controlled by a telephone terminal |
| 06/29/1994 | EP0604042A1 Post answer telephone call redirection or rerouting |
| 06/29/1994 | EP0604041A2 Call transfer with automatic return |
| 06/29/1994 | EP0603692A1 Responder for automatic testing of terminals of a telecommunications network |
| 06/29/1994 | EP0603436A1 Parallel phone detection circuit |
| 06/29/1994 | CN1088722A Management in telecom and open systems |
| 06/29/1994 | CN1025271C Microprocessor controlled ground system monitor |
| 06/29/1994 | CA2111652A1 Voice response script generator system and method |
| 06/28/1994 | US5325426 Method for overload prevention in a switching center of a communications network |
| 06/28/1994 | US5325424 Method of automatically establishing a communication path between two devices |
| 06/28/1994 | US5325422 PBX telephone call control system |
| 06/28/1994 | US5325421 Voice directed communications system platform |
| 06/28/1994 | US5325419 Wireless digital personal communications system having voice/data/image two-way calling and intercell hand-off |
| 06/28/1994 | US5325366 Alarm system for station in a communications system using asynchronous third-digital-stage signal |
| 06/28/1994 | US5325292 Tour/schedule generation for a force management system |
| 06/28/1994 | CA2028791C Telephone system |
| 06/28/1994 | CA1330451C Solid state overcurrent protection device |
| 06/23/1994 | WO1994014291A1 Apparatus for automatically distributing calls between users and a fleet of mobile stations through a central station |
| 06/23/1994 | WO1994014270A1 Mechanized directory assistance |
| 06/23/1994 | WO1994014269A1 Voice interface board for use in an operator system |
| 06/23/1994 | DE4243635A1 Telephone connection data transmission detection and evaluation system |
| 06/23/1994 | DE4242856A1 Short-circuit detection circuitry for telephone subscriber line |
| 06/23/1994 | DE4242844A1 Collective call procedure for all available mobile telephones |
| 06/23/1994 | CA2151505A1 Apparatus for automatically distributing calls between users and a fleet of mobile stations through a central station |
| 06/22/1994 | EP0602857A2 Telecommunication switching system having transparent wireless features |
| 06/22/1994 | EP0602856A2 Shared line appearance across a plurality of switching systems |
| 06/22/1994 | EP0602781A2 Intelligent network architecture |
| 06/22/1994 | EP0602779A2 Wireless personalized communications system |
| 06/22/1994 | EP0602480A1 Method for the system guided interference elimination of devices in communication systems |
| 06/22/1994 | EP0602457A2 Method for modifying a signalling procedure by communication terminals of a communication system |
| 06/22/1994 | EP0602295A1 Method for configuring and operating a telecommunication apparatus |
| 06/22/1994 | EP0602067A1 Transparent inband signaling |
| 06/22/1994 | CN1025138C Dynamic callback technique |
| 06/21/1994 | US5323460 Enhanced subscriber line interface circuit |
| 06/21/1994 | US5323452 Visual programming of telephone network call processing logic |
| 06/21/1994 | US5323450 Telephone network application platform for supporting facsimile applications |
| 06/21/1994 | US5323448 System for accessing amenities through a public telephone network |
| 06/21/1994 | US5323445 Multi-location television conference system |
| 06/21/1994 | US5323444 Emergency call system with call capacity/last chance routing feature |
| 06/21/1994 | US5323148 Selective call receiver presenting the length of an alphanumeric message prior to presentation of the message |
| 06/21/1994 | CA2023140C Alternate destination call redirection for telecommunications systems |
| 06/17/1994 | CA2102464A1 Method for visual authentication by images transmitted over a telecommunication system |
| 06/16/1994 | DE4341008A1 Programmable telephone control device - has alphanumeric display and input command keyboard and command memory |
| 06/15/1994 | EP0601768A2 Bus monitor circuit for switching system and method of monitoring |
| 06/15/1994 | EP0601710A2 On demand language interpretation in a telecommunications system |
| 06/15/1994 | EP0601082A1 Adaptive echo canceller for voice messaging system |
| 06/15/1994 | EP0601054A1 Remote workstation use with database retrieval system |
| 06/14/1994 | US5321743 Shared-tenant services arrangement providing numbering-plan independence and cross-plan access to tenant groups |
| 06/14/1994 | US5321740 Telephone marketing system |
| 06/14/1994 | US5321541 Passive optical communication network with broadband upgrade |
| 06/14/1994 | CA1330236C Multi-location video conference system |
| 06/14/1994 | CA1330225C Interface circuit with transient event tolerance |
| 06/09/1994 | WO1994013091A1 A method of dividing the function of a device into a number of subfunctions |
| 06/09/1994 | WO1994013090A1 Network termination unit |
| 06/09/1994 | WO1994012973A1 Telephone network voice recognition and verification using selectively-adjustable signal thresholds |
| 06/08/1994 | EP0600803A1 Method and device for information transmission between a sender entity and a destination entity |
| 06/08/1994 | EP0600732A2 Copy protection of software for use in a private branch exchange switch |
| 06/08/1994 | EP0600644A1 Ring-trip detection using ring voltage and current |
| 06/08/1994 | EP0600401A1 Method for realisation of a telephone connection in a digital communication network |
| 06/07/1994 | US5319702 Method and apparatus for detecting and responding to hook flash events occurring on a remote telephone |
| 06/07/1994 | US5319701 Method and apparatus for performing an automated collect call |
| 06/07/1994 | US5319700 Terminal adapter pooling system for ISDN |
| 06/07/1994 | US5319640 Transmitting/receiving system having digital switching network |
| 06/07/1994 | US5319631 Method for measuring in the subscriber area of an integrated services digital network system |
| 06/07/1994 | US5319482 Optical loop back and line test apparatus |
| 06/01/1994 | EP0599653A2 Digital sound level control in a telephone system |
| 06/01/1994 | EP0598931A1 Method for the control of switched telephone connections, especially permanent switched telephone connections |
| 06/01/1994 | EP0598865A1 Device for managing the presence time and/or working time |
| 06/01/1994 | EP0524965B1 Private telephone system with simplified command feature |
| 06/01/1994 | CN1087459A Method of delivering paging messages using voice mail |
| 05/31/1994 | US5317628 Message management system |
| 05/31/1994 | US5317627 Enhanced wide area audio response network |
| 05/31/1994 | US5317626 Wake-up and reminder system for a telephone |
| 05/31/1994 | US5317567 Multi-speaker conferencing over narrowband channels |
| 05/31/1994 | CA2022955C Customer definable integrated voice/data call transfer technique |
| 05/31/1994 | CA2002018C Autonomous expert system for directly maintaining remote telephone switching systems |
| 05/26/1994 | WO1994011997A1 Method for establishing connection between communication devices |
| 05/26/1994 | WO1994011980A1 Portable communicator |
| 05/26/1994 | WO1994011975A1 Establishing telecommunications call paths in broadband communication networks |
| 05/26/1994 | WO1994011967A1 Information distribution systems, particularly tour guide systems |
| 05/26/1994 | WO1994011959A1 An apparatus and method for detecting potentially fraudulent telecommunication activity |
| 05/26/1994 | WO1994011948A1 Communications channel testing arrangement |
| 05/26/1994 | WO1994011849A1 Mobile telephone systems and a method for carrying out financial transactions by means of a mobile telephone system |
| 05/26/1994 | DE4323847C1 Remote call for access authorisation to subscriber terminal - is made from appts. with memory contg. secret algorithm for computation of password using serial number obtd. from terminal memory |
| 05/26/1994 | CA2148363A1 Communications channel testing arrangement |
| 05/25/1994 | EP0598526A2 Telecommunication system with improved reconfiguration capability |