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)
05/1998
05/19/1998US5754627 Method and apparatus for managing calls using a soft call park
05/19/1998US5754624 Telephone line test kit
05/19/1998US5754589 Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
05/19/1998US5754550 System data transfer through a fixed path in a switching system
05/19/1998US5754534 Delay synchronization in compressed audio systems
05/19/1998US5754532 Use of multipoint connection services to establish call-tapping points in a switched network
05/19/1998US5754526 Channel switching method and channel switching controller
05/19/1998US5754120 Network congestion measurement method and apparatus
05/19/1998US5753902 IC card, reader/writer
05/19/1998CA2086385C Digital signal processing circuit board having use for voice processing system
05/14/1998WO1998020668A1 Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling
05/14/1998WO1998020667A2 Extended access for automatic call distributing system
05/14/1998WO1998020666A2 Programmable call-censoring device
05/14/1998WO1998020653A1 Access to telecommunications networks in a multiservice environment
05/14/1998WO1998020409A1 Personalized automated operator position
05/14/1998WO1998015110A3 Remote supply circuitry
05/14/1998WO1998013990A3 Method and system for ensuring the security of the supply of services of telecommunication operators
05/14/1998WO1997048233A3 Conference member identification for a telephone system
05/14/1998DE19748801A1 Waiting message notification method e.g. for ISDN
05/14/1998CA2270931A1 Access to telecommunications networks in a multiservice environment
05/14/1998CA2270543A1 Method and apparatus for installing telephone intercom-voice messaging apparatus at doorbell for dwelling
05/14/1998CA2213639A1 Extending internet calls to a telephony call center
05/13/1998EP0841831A2 Wan-based voice gateway
05/13/1998EP0841829A2 Resource pooling system and method in communication systems
05/13/1998EP0841828A2 A system and a method for retrieving data from a database
05/13/1998EP0841823A2 Call sequency processing method in a worldwide PCS environment
05/13/1998EP0841801A1 Method for restricting the duration of a telephone communication and telephone apparatus using the same
05/13/1998EP0841799A2 Stereophonic acoustic echo cancellation using non-linear transformations
05/13/1998EP0841798A2 Call diversion
05/13/1998EP0841797A2 Method for call transfer
05/13/1998EP0841796A2 Voice mail system and method of inter-voice mail system communication
05/13/1998EP0841795A2 Telephone services
05/13/1998EP0841792A2 Interactive subscriber telephone terminal with automatic management software download feature
05/13/1998EP0840989A1 Mobile telephone system
05/13/1998EP0840986A1 Distributing network services and resources in a mobile communications network
05/13/1998EP0840983A1 A method and apparatus for controlling call acceptance in a telecommunications network
05/13/1998EP0840975A1 Assessment of signal quality
05/13/1998EP0840974A1 Method for returning inbound calls
05/13/1998EP0788704A4 A network based knowledgeable assistant
05/13/1998EP0687371B1 Queue managing system and method
05/13/1998CN1181862A Televoting in an intelligent network
05/13/1998CN1181553A System and method for accessing data files in computer network
05/12/1998US5752231 Method and system for performing speaker verification on a spoken utterance
05/12/1998US5752196 Maintaining group data in a mobile communications system
05/12/1998US5752191 Telephone control system which connects a caller with a subscriber AT A telephone address
05/12/1998US5752188 Unstructured supplementary service data from a home location register to an external node
05/12/1998US5752186 Access free wireless telephony fulfillment service system
05/12/1998US5752075 Integrated computer Scanner printer in a single system enclosure sharing control circuitry and light source wherein a single CPU performing all of the control tasks
05/12/1998US5751969 Apparatus and methods for predicting and managing congestion in a network
05/12/1998US5751959 Communication terminal, supervisory system and communication method
05/12/1998US5751802 Telecommunications service provisioning
05/12/1998US5751800 Screening of incoming telephone calls prior to call completion to the destination party
05/12/1998US5751798 Passive information access system
05/12/1998US5751795 Broadcasting of information through telephone switching system display messages
05/12/1998US5751794 Proactive voice mail service
05/12/1998US5751793 Method and instructions for visual voice messaging user interface
05/12/1998US5751792 System and method for providing a message system subscriber with a roaming mailbox
05/12/1998US5751791 Network based multimedia messaging method and system
05/12/1998US5751790 Voice information service device and voice information service method
05/12/1998US5751789 SNID with wireless backup
05/12/1998US5751760 Controller for a telephone system with code screening of incoming calls
05/12/1998US5751717 Subscriber line interface in a telecommunications exchange
05/12/1998US5751706 System and method for establishing a call telecommunications path
05/12/1998US5751700 Communication terminal apparatus
05/12/1998US5751338 Methods and systems for multimedia communications via public telephone networks
05/12/1998US5751337 Teleconferencing method and system for providing face-to-face, non-animated teleconference environment
05/08/1998CA2220454A1 Telephone services
05/07/1998WO1998019490A2 A method of providing a delayed connection announcement to a mobile subscriber within a radio telecommunication system
05/07/1998WO1998019484A2 Method and telephone network for switching telephone connections
05/07/1998WO1998019472A2 Method and arrangement for connecting subscribers to a telecommunication network in a switching centre
05/07/1998WO1998019471A1 Method and apparatus for selecting one voice gateway from multitude of voice gateways, which shall serve a remote application
05/07/1998WO1998019470A1 Traffic control in a communications network
05/07/1998WO1998019468A1 Communications link interconnecting service control points of a load sharing group for traffic management control
05/07/1998WO1998019467A1 Load sharing group of service control points connected to a mediation point for traffic management control
05/07/1998WO1998019448A1 A method and apparatus for charging for an outgoing voice call performed during an internet session
05/07/1998WO1998019445A1 Device and method for communication between a data network and a telecommunications network
05/07/1998WO1998019440A1 Intelligent load balancing of special service calls based on availability of terminations
05/07/1998WO1998019439A1 Multi-protocol telecommunications routing optimization
05/07/1998WO1998019438A1 Method and arrangement for handling of multimedia messages in a telecommunication system
05/07/1998WO1998019437A2 Method and system for utilizing an information delivery service in a local number portability environment
05/07/1998WO1998019436A1 Simulating changes in telephone subscriber line
05/07/1998WO1998019433A2 Method and apparatus for identifying type of call
05/07/1998WO1998019240A2 Method and apparatus for verifying ip-addresses
05/07/1998WO1998013991A3 Method and system for ensuring the security of telephone call management centres
05/07/1998WO1998010554A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998WO1998010553A3 Improvements in, or relating to, control channels for telecommunications transmission systems
05/07/1998WO1998010551A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998WO1998010547A3 Improvements in, or relating to, multi-carrier transmission systems
05/07/1998WO1998009423A3 System and method for ip-activated call setup
05/07/1998WO1998009421A3 System and method for incoming and outgoing interrogations for store-and-forward services
05/07/1998WO1998009403A3 Communications network
05/07/1998WO1998004078A3 Dynamic load limiting
05/07/1998WO1998000955A3 Telephone polling method
05/07/1998WO1997043848A3 Method and apparatus for remotely activating services in a telecommunications network
05/07/1998CA2270367A1 Method and apparatus for verifying ip-addresses
05/07/1998CA2270047A1 Method and apparatus for selecting one voice gateway from multitude of voice gateways, which shall serve a remote application
05/07/1998CA2269935A1 A method of providing a delayed connection announcement to a mobile subscriber within a radio telecommunication system
05/07/1998CA2269708A1 Method and apparatus for identifying type of call
05/07/1998CA2269702A1 Method and arrangement for handling of multimedia messages in a telecommunication system
05/06/1998EP0840530A2 Call handling in a communication network
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