Patents
Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881)
04/1999
04/22/1999WO1998054884A9 Telephone system integrated text based communication processes, apparatus and systems
04/22/1999DE19753854C1 Communications terminal with T-network functions
04/22/1999DE19741770C1 Communication system for communication between accessory unit and appropriate terminal equipment, comprises switching center which has echo control unit and accessory unit having mechanisms for producing echo messages
04/22/1999CA2305154A1 Network monitoring method for telecommunications network
04/22/1999CA2303840A1 System and method for integrating voice on network with traditional telephony
04/21/1999EP0910223A2 Mobile radio terminal with SMS function for transmitting short message and method for controlling the same
04/21/1999EP0910201A2 Device and method for establishing a voice connection
04/21/1999EP0910199A2 Call back method
04/21/1999EP0910198A2 Mobility management system
04/21/1999EP0909525A1 Atm telecommunications systems and method for routing narrow band traffic
04/21/1999EP0909519A2 Variable burst remote access application messaging method and apparatus
04/21/1999EP0909505A1 Method in telecommunication operating service
04/21/1999EP0909504A2 Telephone polling method
04/21/1999EP0909503A1 Call waiting service in a telecommunications network
04/21/1999EP0909502A2 Test detection apparatus and method
04/21/1999EP0909501A1 An arrangement for controlling subscriber interface circuits
04/21/1999EP0909500A2 Telecommunications switch including an integrated internet access server
04/21/1999EP0909498A1 Interactive method and apparatus for the generation of leads
04/21/1999EP0604610B1 Coin/card operated public telephone and its controlling method
04/21/1999CN1214847A Device and method to establish communication
04/21/1999CN1214842A Method and apparatus for providing private communication system in public switched telephone network
04/21/1999CN1214841A Method for controlling intelligent network call
04/21/1999CN1214840A Service creation apparatus for communications network
04/21/1999CN1214836A Telecommunication device and a method for providing ringing information
04/21/1999CN1214835A 话音因特网传输系统 Internet voice transmission system
04/21/1999CN1214834A Smart telecommunications interface
04/21/1999CN1214832A Prioritization of data to be transmitted in router
04/21/1999CN1214829A Method and apparatus for providing multi-party speech connection for use in wireless communication system
04/20/1999US5896569 Wireless access to telephone network dial tone
04/20/1999US5896565 Remote conference calling for wireless systems
04/20/1999US5896535 Method and system for testing computer system software
04/20/1999US5896511 Method and apparatus for providing buffer state flow control at the link level in addition to flow control on a per-connection basis
04/20/1999US5896500 System for call request which results in first and second call handle defining call state consisting of active or hold for its respective AV device
04/20/1999US5896449 Voice enhancement system and method
04/20/1999US5896447 Method for accommodating ported directory numbers affected by call block controls implemented in a telecommunications network
04/20/1999US5896444 Method and apparatus for managing communications between a client and a server in a network
04/20/1999US5896442 Voice announcement technique of an electronic exchange system
04/20/1999US5896441 Communication state management system and method in an intelligent network
04/20/1999US5896440 System and method for providing a unified communications link between divergent communication networks
04/20/1999US5896414 Method and apparatus for providing control channel communications for an information distribution system
04/20/1999US5896370 Signal protection and monitoring system
04/20/1999US5896268 Enclosure for high-density subscriber line modules
04/20/1999US5896048 Method for determining active/stand-by mode for use in a duplicated system
04/20/1999US5895448 Methods and apparatus for generating and using speaker independent garbage models for speaker dependent speech recognition purpose
04/20/1999CA2165704C Telephone message center
04/20/1999CA2159644C System for communicating with an adsi-compatible telephone via a service circuit node
04/20/1999CA2154789C Self-diagnostic system for cellular-transceiver systems
04/20/1999CA2117451C Method for sending and receiving video images
04/20/1999CA2017969C Dynamic graphics arrangement for displaying spatial-time-series data
04/17/1999CA2246745A1 Device and method for establishing a call connection
04/15/1999WO1999018746A1 Method for authenticating subscribers to a digital mobile radio network
04/15/1999WO1999018716A1 Systems and methods for managing messages
04/15/1999WO1999018711A1 Virtual end office in a switched telephone network
04/15/1999WO1999018710A2 Method and device in telecommunications system
04/15/1999WO1999018709A2 Method and device in telecommunications system
04/15/1999WO1999018707A1 Method and apparatus for connecting calls and passing announcements during calls to the a- and b-subscriber
04/15/1999WO1999018706A2 Service interaction in an intelligent network
04/15/1999WO1999018704A2 System and method for providing restrictions on mobile-originated calls
04/15/1999WO1999018695A1 Fault location and performance testing of communication networks
04/15/1999WO1999018687A1 Distributed communications system
04/15/1999WO1999018577A2 A method for recording received sound signals in a telephone
04/15/1999WO1999018515A1 A method and apparatus for translating a static identifier into a dynamically assigned network address
04/15/1999WO1999011049B1 Communications system for a service provider
04/15/1999WO1999004578A3 Least cost routing device
04/15/1999WO1999002000A8 Resource controllers for use in a non-unitary service system
04/15/1999WO1999001977A9 Method for operating a network with interconnected terminals
04/15/1999WO1998039849A3 Echo cancellation system and method for multipoint networks
04/15/1999DE19745305A1 Process for operating interactive services
04/15/1999DE19743561A1 Authenticating of subscribers of digital mobile radio network
04/15/1999DE19740862A1 Information signal transmission over telephone network
04/15/1999CA2305589A1 System and method for providing restrictions on mobile-originated calls
04/15/1999CA2305459A1 Systems and methods for managing messages
04/15/1999CA2305439A1 A method for recording received sound signals in a telephone
04/14/1999EP0909082A1 Using web page hit statistics to anticipate call center traffic
04/14/1999EP0909081A2 Method and apparatus for storing and forwarding voice signals
04/14/1999EP0909080A2 Device and method for remote interrogation of individually stored call numbers
04/14/1999EP0909079A2 Method for providing remote emulation of the functionality of a private exchange
04/14/1999EP0909078A2 Elastic buffer for data storage with speech data
04/14/1999EP0909066A2 Method and device for adjusting the quantization characteristics of a PCM coding
04/14/1999EP0909064A2 Routing control communication system between circuit switched network and internet
04/14/1999EP0909050A2 Multiple connection method and device for subscriber access network
04/14/1999EP0908074A1 Telecommunications networks
04/14/1999EP0908065A1 Telephone system having land-line supported private base station switchable into cellular network
04/14/1999EP0908048A1 Echo canceller system
04/14/1999EP0908047A1 Methods and apparatus for implementing a network call center
04/14/1999EP0908046A1 Validating a forward-to-number within a mobile telecommunications system
04/14/1999EP0908045A1 Method and apparatus for simulating a central queue for distributing calls in a distributed arrangement of automatic call distributors
04/14/1999EP0908044A1 Telecommunications call centre
04/14/1999EP0908043A2 Improvements in or relating to call handling
04/14/1999EP0907920A1 Pcs with enhanced short-message service option
04/14/1999EP0744087A4 Smart phone
04/14/1999EP0537153B1 Routing of network traffic using discrete traffic measurement data
04/14/1999CN1214180A Alternative routing system for mobile telephone calls
04/14/1999CN1214177A Method for transmission of information from information source to information receivers
04/14/1999CN1214170A Personal communications internetworking
04/14/1999CN1214167A Protocol interface gateway
04/14/1999CN1214166A Unix open systems interconnection layer testing
04/14/1999CN1214165A Method and arrangement relating to installation of new subscriber in telecommunications network
04/14/1999CN1213937A Call connection control method in exchange
04/14/1999CN1213923A Apparatus and methods for user identification to deny access or service to unauthorized users