| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
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| 05/20/1997 | US5631967 Processing audio signals using a state variable |
| 05/20/1997 | US5631958 Method of processing telecommunications signals |
| 05/20/1997 | US5631954 Communication system |
| 05/20/1997 | US5631953 Circuit arrangement for integration of EDP systems in the utilization of telephone systems |
| 05/20/1997 | US5631949 Location independent time reporting message retrieval system |
| 05/20/1997 | US5631948 Voice mail communication with call blocking |
| 05/20/1997 | US5631904 Method for automatically establishing a conference call |
| 05/20/1997 | US5631901 Method of transmitting control signals and PBX system |
| 05/20/1997 | US5631797 For limiting the voltage on a telephone line |
| 05/15/1997 | WO1997017815A1 Bidding for telecommunications traffic |
| 05/15/1997 | WO1997017814A1 A communications addressing network and terminal therefor |
| 05/15/1997 | WO1997017796A1 Method and system for call disposition messaging |
| 05/15/1997 | WO1997017794A1 Improvements in or relating to telecommunications services |
| 05/15/1997 | WO1997017791A2 User-authentification device using acoustic signals and a telephone set |
| 05/15/1997 | WO1997017783A1 Traffic measurement in a communication system |
| 05/15/1997 | DE19541365A1 Converter for analogue telephone device coupled to digital telephone network |
| 05/15/1997 | CA2236576A1 Method and system for call disposition messaging |
| 05/14/1997 | EP0773686A2 Equipment for a teleconference |
| 05/14/1997 | EP0773659A2 Smart messages and smart macros for telecommunications relay service (TRS) operator services for deaf (OSD) |
| 05/14/1997 | EP0773658A2 Method and apparatus for universal and secure access to the telephone network |
| 05/14/1997 | EP0772951A1 Multi-nodal digital telephone distribution system |
| 05/14/1997 | EP0772946A2 A system for monitoring telephone networks and/or data communication networks, especially mobile telephone networks |
| 05/14/1997 | EP0772942A1 Apparatus for managing a telecommunications network |
| 05/14/1997 | EP0772941A1 Communication apparatus and method |
| 05/14/1997 | EP0772933A1 Process and device for transmitting audio signals between communication terminals |
| 05/14/1997 | EP0772857A1 Education and entertainment device with dynamic configuration and operation |
| 05/14/1997 | EP0669067B1 Establishing telecommunications call paths in broadband communication networks |
| 05/14/1997 | CN1149945A Method and apparatus for reducing residual far-end echo in voice communication networks |
| 05/14/1997 | CN1149798A Controller for telephone ring |
| 05/14/1997 | CN1149735A Service personal computer of modular structure |
| 05/13/1997 | US5630060 Method and apparatus for delivering multi-media messages over different transmission media |
| 05/13/1997 | US5629978 Service delivery using broadband |
| 05/13/1997 | US5629931 Information transmission system |
| 05/13/1997 | US5629925 Method of operating a switching network, as well as switching network and exchange therefor |
| 05/13/1997 | CA2103302C Key telephone system |
| 05/09/1997 | WO1997016936A1 Arrangement and method relating to telecommunications networks |
| 05/09/1997 | WO1997016935A1 Network directory methods and systems for a cellular radiotelephone |
| 05/09/1997 | WO1997016934A1 Telecommunications system |
| 05/09/1997 | WO1997016930A1 Call back service for a regulatory restrictive area |
| 05/09/1997 | WO1997016929A1 Service creation apparatus for a communications network |
| 05/09/1997 | WO1997016928A1 A call processing architecture and method of representing the topology of a complex call |
| 05/09/1997 | WO1997016916A1 Method and apparatus for implementing a computer network/internet telephone system |
| 05/09/1997 | WO1997016915A1 Authentication system for a communication network |
| 05/09/1997 | WO1997016914A1 Method of rendering misuse of communication services more difficult |
| 05/09/1997 | WO1997010667A3 Computer telephony integration system and method |
| 05/09/1997 | WO1997006479A3 Computerized interactor systems and methods for providing same |
| 05/09/1997 | CA2236754A1 Call back service for a regulatory restrictive area |
| 05/09/1997 | CA2236320A1 Service creation apparatus for a communications network |
| 05/09/1997 | CA2236102A1 Arrangement and method relating to telecommunications networks |
| 05/09/1997 | CA2233688A1 Network directory methods and systems for a cellular radiotelephone |
| 05/07/1997 | EP0772335A2 Arrangement for queuing a call to the best split |
| 05/07/1997 | EP0772324A2 Systems and methods for sharing of resources |
| 05/07/1997 | EP0636295B1 Wideband telephone line interface circuit |
| 05/07/1997 | CN1149377A Connection release in a telecommunications system |
| 05/07/1997 | CN1149376A Connection release in a telecommunications system |
| 05/07/1997 | CN1149373A Voice enhancement system and method |
| 05/07/1997 | CN1149372A Method for classifying class from a mobile subscription |
| 05/07/1997 | CN1149371A Method and arrangement for call setup in telecommunication networks |
| 05/07/1997 | CN1149339A A position determination method for use with analog cellular system |
| 05/07/1997 | CN1149225A Call screening method and apparatus for use in completing telephone calls |
| 05/07/1997 | CN1149220A Method, communication system and conference unit for carrying out conference |
| 05/06/1997 | US5628031 Personal digital assistant module implemented as a low-profile printed circuit assembly having a rigid substrate wherein IC devices are mounted within openings wholly between opposite plane surfaces of the rigid substrate |
| 05/06/1997 | US5627978 Graphical user interface for multimedia call set-up and call handling in a virtual conference on a desktop computer conferencing system |
| 05/06/1997 | US5627888 Telecommunication system for handling basic and supplementary functions |
| 05/06/1997 | US5627887 Method for processing collect calls |
| 05/06/1997 | US5627886 System and method for detecting fraudulent network usage patterns using real-time network monitoring |
| 05/06/1997 | US5627884 Method for returning inbound calls |
| 05/06/1997 | US5627877 Method for relocating a subscriber in a voice messaging system |
| 05/06/1997 | US5627875 Method in a telephone system for reaching a subscriber under busy/no answer conditions and ring/no answer conditions |
| 05/06/1997 | US5627834 Code division multiple access (CDMA) automatic call simulator |
| 05/06/1997 | US5627827 Automatic service cutover for ISDN private exchange |
| 05/06/1997 | US5627819 Use of multipoint connection services to establish call-tapping points in a switched network |
| 05/06/1997 | CA2102092C Call transfer with automatic return |
| 05/06/1997 | CA2101395C International priority calling system |
| 05/06/1997 | CA2088084C Network-based digital bandwidth-on-demand |
| 05/02/1997 | EP0771126A2 Method and communication system for displaying caller identification on subscriber stations in case of group calls |
| 05/02/1997 | EP0771098A2 Circuits, systems and methods for providing resource allocation in a communication system |
| 05/02/1997 | EP0771095A2 Network access to internet and stored multimedia services from a terminal supporting the H.320 protocol |
| 05/02/1997 | EP0771052A2 Telephone line connector |
| 05/02/1997 | EP0710431A4 Space-saving memory module |
| 05/02/1997 | EP0427800B1 Interlock circuit for preventing corruption of telephone line signals |
| 05/02/1997 | EP0398987B1 Communications network state and topology monitor |
| 05/01/1997 | WO1997016038A1 Method and apparatus for offering subscribers access to unused communications capacity in a cellular communications system |
| 05/01/1997 | WO1997016037A1 System and method for number presentation |
| 05/01/1997 | WO1997016014A2 Video telecommunication routing systems and methods |
| 05/01/1997 | WO1997016013A1 Method and apparatus for off-hook detection |
| 05/01/1997 | WO1997016007A1 Gateway between networks using different protocols |
| 05/01/1997 | CA2235573A1 Method and apparatus for offering subscribers access to unused communications capacity in a cellular communications system |
| 05/01/1997 | CA2235417A1 System and method for number presentation |
| 04/30/1997 | DE19644211A1 Speed call function for making telephone call from personal computer |
| 04/30/1997 | DE19644210A1 Automatic display method for incoming telephone calls |
| 04/30/1997 | CN1148924A Network termination equipment |
| 04/30/1997 | CN1148921A Method for monitoring the condition of interconnection network |
| 04/30/1997 | CN1148780A Anti-theft method and system thereof for credit card and hand telephone-set |
| 04/29/1997 | US5625877 Wireless variable bandwidth air-link system |
| 04/29/1997 | US5625697 Microphone selection process for use in a multiple microphone voice actuated switching system |
| 04/29/1997 | US5625687 Arrangement for enhancing the processing of speech signals in digital speech interpolation equipment |
| 04/29/1997 | US5625686 Customer-accessible test port for network interface device |
| 04/29/1997 | US5625682 Help desk improvement |
| 04/29/1997 | US5625681 Method and apparatus for telephone number portability |