Patents
Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881)
10/1997
10/01/1997EP0797887A1 Traffic control in a telecommunications system
10/01/1997EP0702873B1 Service platform
10/01/1997CN2263852Y Automatic Chinese timer of telephone switching system
10/01/1997CN1160973A Call reservation method for subscriber of other exchange utilizing No.7 signal
09/1997
09/30/1997US5673393 Managing bandwidth over a computer network having a management computer that allocates bandwidth to client computers upon request
09/30/1997US5673362 Speech synthesis system in which a plurality of clients and at least one voice synthesizing server are connected to a local area network
09/30/1997US5673312 Control of call features provided to a subscriber by a hierarchical telecommunication switch
09/30/1997US5673311 Hierarchical switch support of services for subscribers directly served by local exchange carriers
09/30/1997US5673310 Hierarchical switch support of services for subscribers of separate centrex exchanges
09/30/1997US5673299 Adjunct controller for a telephone system
09/30/1997US5673268 Method of maintaining a modem connection over a telephone line
09/30/1997US5673261 Communication system
09/30/1997US5673257 Computer-based multifunction personal communication system
09/30/1997US5673256 Apparatus and method for sending data messages at an optimum time
09/30/1997US5673255 Apparatus for providing service to telephone subscribers connected to a remote terminal from multiple telephone service providers
09/30/1997US5673080 Seamless multimedia conferencing system using enhanced endpoint devices
09/30/1997CA2116256C Password verification system
09/29/1997CA2201214A1 A method of managing digital signal carrying facilities
09/29/1997CA2201207A1 A reprovisioning monitor
09/29/1997CA2201206A1 An improved digital loop carrier system
09/25/1997WO1997035446A1 Method for transmission of information from an information source to information receivers
09/25/1997WO1997035443A2 System and method for providing services to subscriber stations connected to an access network
09/25/1997WO1997035419A1 Method and system for rehome optimization
09/25/1997WO1997035417A1 Method and apparatus for validating a subscriber terminal on a telecommunication network
09/25/1997WO1997035416A1 A method of establishing a communications call
09/25/1997WO1997035415A1 Method and system for optimized scheduling
09/25/1997WO1997035404A1 Method and arrangement relating to the installation of a new subscriber in a telecomunications network
09/25/1997WO1997035399A2 Time division duplexed multicarrier transmission
09/25/1997WO1997035398A2 Process for data communications and a data communications system for carrying out the process
09/25/1997DE19611021A1 Operating data remote managing in memory-programmable communication system
09/25/1997DE19611001A1 Zugriffsknoten, Zugriffsnetz, Telekommunikationssystem unter Verwendung eines Zugriffsknotens und Verfahren zum Bereitstellen von Dienstleistungen von einem Servicenetz an mit dem Zugriffsnetz verbundene Teilnehmerstationen Access node access network, telecommunication system using an access node and method for providing services of a service network connected to the access network subscriber stations
09/25/1997CA2250327A1 System and method for providing services to subscriber stations connected to an access network
09/25/1997CA2249577A1 Method and apparatus for validating a subscriber terminal on a telecommunication network
09/24/1997EP0797368A2 Telecommunication system, radio base station thereof, and portable telecommunication terminal thereof
09/24/1997EP0797338A2 Method and arrangement for inter-connecting a virtual-reality world and the real world for the purpose of establishing a real-time communications connection such as a telephone call connection
09/24/1997EP0797337A2 Method for enabling communications between calling and called multimedia terminals
09/24/1997EP0797336A2 Mobile communication terminal equipment
09/24/1997EP0796535A2 Communications apparatus
09/24/1997EP0796534A2 Telephonic voice message transmission control method
09/24/1997EP0796531A2 Call control in a telecommunication system
09/24/1997CN1160471A Mobile telecommunications system
09/24/1997CN1160466A Regional centrex
09/24/1997CN1160330A Method for management of additional service in mobile communication network
09/24/1997CN1160320A Method and apparatus for pre-paid return call
09/24/1997CN1160315A Optical communication system and remote sensor interrogation
09/23/1997US5671273 Sealed jack
09/23/1997US5671251 Apparatus and method for a data communications device to selectively operate as an analog modem, as a digital modem, and as a terminal adapter
09/23/1997US5671216 Method and apparatus for controlling transmission bandwidth between connectionless servers
09/23/1997US5670957 Methods for communicating with a telecommunications device for the deaf
09/23/1997US5670950 Private communications network system and method of authentication for a mobile station used in private communications networks
09/23/1997CA2104850C Speech password system
09/23/1997CA2097958C Voice message recovery system and method
09/23/1997CA2095500C Telephone line overvoltage protection method and apparatus
09/18/1997WO1997034437A1 Mobile telecommunications network having integrated wireless office system
09/18/1997WO1997034420A1 Interactive cable network providing fax and voice mail
09/18/1997WO1997034410A2 Network based multimedia messaging method for non-ccitt compliant switches
09/18/1997WO1997034406A1 Telecommunications networks and services
09/18/1997WO1997034405A1 Mail reception notifying system and mail reception notifying method
09/18/1997WO1997034401A1 Call management system with call control from user workstation computers
09/18/1997WO1997028658A3 Method and apparatus for providing a private communication system in a public switched telephone network
09/18/1997WO1997021291A3 A system for on-demand remote access to a self-generating audio recording, storage, indexing and transaction system
09/18/1997DE19610286A1 Communication terminal with programmable function keys
09/18/1997DE19609556A1 Verfahren zur Datenkommunikation und Datenkommunikationssystem zur Durchführung des Verfahrens A method for data communication and data communication system for performing the method
09/18/1997CA2247979A1 Mobile telecommunications network having integrated wireless office system
09/17/1997EP0795993A2 Automatic announcement system
09/17/1997EP0795992A2 Method and apparatus for a prepaid return call
09/17/1997EP0795991A1 Communications system
09/17/1997EP0795988A2 Method and device for limiting call authorization from communication terminals
09/17/1997EP0795977A2 Method of transmitting an ADSL signal simultaneously with an ISDN signal
09/17/1997EP0795256A1 A radio telecommunication system
09/17/1997EP0795246A2 Intelligent call processing platform for home telephone system
09/17/1997EP0795243A1 Routing in a communication network
09/17/1997EP0795170A1 Telephone network service for converting speech to touch-tones
09/17/1997CN1159723A Network blocking test method and equipment
09/17/1997CN1159689A Method and device for transmitting communicational signal by public network
09/16/1997US5668875 Method and apparatus for authentication in a communication system
09/16/1997US5668866 Apparatus for protecting a subscriber line interface circuit against overvoltages
09/16/1997US5668863 Method and apparatus for recording and retrieval of audio conferences
09/16/1997US5668862 Method and apparatus for providing user controlled call management services
09/16/1997US5668861 Telecommunications system with notification hold
09/16/1997US5668860 Call screening at a hierarchical switch based on organizational membership of the parties
09/16/1997US5668856 Method and system for screening calls directed to an international telephone operator
09/16/1997US5668855 Message management system
09/16/1997US5668854 Distributed system for call processing
09/16/1997US5668853 Telecommunications calling feature method and apparatus
09/16/1997US5668808 Path route retrieval method in a time multiplexer network
09/16/1997CA2111655C Calling center employing unified control system
09/16/1997CA2109899C Multi-media integrated message arrangement
09/16/1997CA2108872C Audio/video telephone communications
09/16/1997CA2108740C Telephone terminal controlled conference inspection
09/16/1997CA2108739C Unattended meet-me-conference controlled by a telephone terminal
09/16/1997CA2108738C Multi-level conference management and notification
09/16/1997CA2102077C Call billing and measurement methods for redirected calls
09/16/1997CA2096057C Automatic processing of calls with different communication modes in a telecommunications system
09/16/1997CA2072182C Congestion control for high speed packet networks
09/12/1997WO1997033450A1 Methods and systems for creating a spatial auditory environment in an audio conference system
09/12/1997WO1997033446A1 Remote test of a wireless subscriber connection
09/12/1997WO1997033441A1 Providing number portability by means of enhanced routing tables
09/12/1997WO1997033440A1 Telecommunications networks
09/12/1997WO1997033439A2 Process for making connections and accounting for connections in telecommunication systems