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)
06/1998
06/30/1998US5774665 Asynchronous transfer mode LAN switching hub device using IEEE P1355 standard and its control method
06/30/1998US5774539 Communication system having switchably-coupled subscriber terminals
06/30/1998US5774538 Exchange service starting system
06/30/1998US5774536 Balanced network for use in a keyphone system
06/30/1998US5774534 Context-based transactions using broadcast advertising
06/30/1998US5774530 Telecommunications network circuit usage measurement
06/30/1998US5774525 Method and apparatus utilizing dynamic questioning to provide secure access control
06/30/1998US5774524 Telephone test device and method of the same for optical cable television system
06/30/1998US5774457 Multi-point video conference control apparatus
06/30/1998US5774456 Method and apparatus for adopting performance report messages in a telecommunications system
06/30/1998US5774316 Ground fault detector for line-powered telephone network
06/30/1998CA2149462C Telecommunications feature server
06/30/1998CA2125423C Routing to intelligence
06/30/1998CA2118271C Location dependent service for a wireless telephone
06/27/1998CA2194028A1 "drp" and "drpc"
06/25/1998WO1998027783A1 Virtual private network service provider for asynchronous transfer mode network
06/25/1998WO1998027759A1 Method of forwarding voice messages to a subscriber
06/25/1998WO1998027753A1 Method and system for monitoring the operational status of a network element in an advanced intelligent network
06/25/1998WO1998027752A1 Method for expediting access to services of a switched communications network
06/25/1998WO1998027751A1 Method and device in telecommunications network
06/25/1998WO1998027750A1 Method for controlling a call
06/25/1998WO1998027715A1 A method for controlling a credit customer call
06/25/1998WO1998027713A1 Passive distributed filter system and method
06/25/1998WO1998027712A1 Arrangement, system and method relating to telecommunications access and control
06/25/1998WO1998027711A2 Intelligent services network test system
06/25/1998WO1998027706A1 Telephone directory apparatus and method
06/25/1998WO1998027703A2 Remote token based information acquisition system
06/25/1998WO1998027542A1 Audio-based wide area information system
06/25/1998WO1998019240A3 Method and apparatus for verifying ip-addresses
06/25/1998WO1998016052A3 Preventing misuse of call forwarding service
06/25/1998WO1998012890A3 Method and arrangement for rendering telecommunication operations and relations anonymous in telematic applications
06/25/1998WO1998012883A3 Global two-way paging using the internet
06/25/1998WO1998005153A3 Restriction of incoming calls forwarded from designated terminals
06/25/1998WO1997045990A3 Holding party call back subscriber feature
06/25/1998DE19753442A1 Radio reception arrangement for selective calling
06/25/1998DE19717587C1 Communication system, especially program controlled branch exchange system
06/25/1998DE19651544A1 Fixed or mobile subscriber network operation method with several exchanges
06/25/1998DE19651334A1 Betriebstestvorrichtung und Verfahren zur Ausführung eines Betriebstests für ein zu testendes System Operation test device and method for performing an operation test for a system to be tested
06/25/1998DE19651275A1 Kommunikationssystem und Verfahren zum Testen einer Kommunikationsvorrichtung The communication system and method of testing a communication device
06/25/1998DE19651244A1 Kommunikationssystem und Verfahren zum Testen einer Kommunikationsvorrichtung The communication system and method of testing a communication device
06/25/1998DE19650320A1 Electronic line-testing subscriber connection circuit for digital exchange
06/25/1998CA2275874A1 Method and device in telecommunications network
06/25/1998CA2275687A1 Virtual private network service provider for asynchronous transfer mode network
06/25/1998CA2275500A1 Method and system for monitoring the operational status of a network element in an advanced intelligent network
06/25/1998CA2275274A1 Passive distributed filter system and method
06/25/1998CA2274695A1 Method for controlling a call
06/25/1998CA2274689A1 A method for controlling a credit customer call
06/25/1998CA2274126A1 Audio-based wide area information system
06/24/1998EP0849975A2 Network structure for realising part of a wireless ATM system and method for executing inter-switch handover in said network structure
06/24/1998EP0849974A2 Method for flexible use of a tree topology in a wireless ATM system
06/24/1998EP0849964A1 Method and system for centralized calling to access a service, especially centralized calling for taxis
06/24/1998EP0849962A1 Automatic learning of network routing using random routes
06/24/1998EP0849961A2 Long distance telephone switching system with enhanced subscriber services
06/24/1998EP0849960A1 Method and device in telecommunications network
06/24/1998EP0849928A2 Telecommunication equipment support of high speed data services
06/24/1998EP0849927A1 A dialing plan for special access applications such as telemetry systems
06/24/1998EP0849926A2 System and method for retrieving messages from a voice message system
06/24/1998EP0849925A1 Enhanced message centre
06/24/1998EP0849924A2 Method and arrangement for recording a call on a memory medium
06/24/1998EP0849923A1 A method and a system for providing service to telecommunication subscribers at low traffic intensity
06/24/1998EP0849920A1 A method and apparatus for delivering data from an information provider using the public switched network
06/24/1998EP0849676A2 Software upgrade system
06/24/1998EP0848881A1 Pstn transaction processing network employing wireless concentrator/controller
06/24/1998EP0848880A2 Transaction support apparatus
06/24/1998EP0848879A1 Phone based dynamic image annotation
06/24/1998EP0848878A1 Personal communications terminal
06/24/1998EP0848875A1 System for managing telecommunications
06/24/1998EP0848874A1 Broadband telecommunications system
06/24/1998EP0848871A2 Telecommunications apparatus, system and method with an enhanced signal transfer point
06/24/1998CN1185881A Method for setting up a telephone connection and an exchange system
06/24/1998CN1185695A High-voltage test circuit, ringing signal test circuit and non-ringing receiving test circuit
06/23/1998US5771386 Software configuration in a telecommunication device
06/23/1998US5771285 For use with a telecommunications network
06/23/1998US5771284 Method for updating a local switch internal database in a system having different service providers within a common numbering plan area
06/23/1998US5771280 Method of and apparatus for providing arbitrarily defined hierarchy maps depicting relative geographical information
06/23/1998US5771277 Modem for connection to a telephone line
06/23/1998US5771276 Voice templates for interactive voice mail and voice response system
06/23/1998US5771274 Topology-based fault analysis in telecommunications networks
06/23/1998US5771273 In a public switched telephone network
06/23/1998US5771065 Picture phone terminal interrupt function and picture phone terminal having communication disconnection notifying function
06/23/1998CA2221218A1 Local telephony service over a cable network using packet voice
06/23/1998CA2174994C Virtual wide area centrex
06/23/1998CA2148723C Diverter interface between two telecommunication lines and a station set
06/23/1998CA2102857C Technique for reducing echoes in conference communications
06/18/1998WO1998026621A2 System and method of forwarding data calls in a radio telecommunications network
06/18/1998WO1998026620A2 Providing location-based call forwarding within a mobile telecommunications network
06/18/1998WO1998026617A2 An operational test device and method of performing an operational test for a system under test
06/18/1998WO1998026616A2 Communications system and method for testing of a communications apparatus
06/18/1998WO1998026573A2 Method and device for detecting a ringtrip
06/18/1998WO1998026572A2 Ring-trip circuit
06/18/1998WO1998026570A2 Communications system and method for testing of a communications apparatus
06/18/1998WO1998026568A1 Procedure and system for transmitting an emergency call in the event of malfunction in the telephone network
06/18/1998WO1998026566A1 Communications system
06/18/1998WO1998026564A2 Procedure for the transmission of a subscriber number
06/18/1998WO1998026561A2 Voice path testing in telecommunications systems
06/18/1998WO1998026543A1 Internet telephony
06/18/1998WO1998019437A3 Method and system for utilizing an information delivery service in a local number portability environment
06/18/1998WO1998017074A3 Providing caller ID within a mobile telecommunications network
06/18/1998WO1998015145A3 A method for determining network switch capacity
06/18/1998WO1998014021A3 Home location register feature dispatching and arbitration in a wireless intelligent network
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