| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
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| 01/14/1997 | US5594948 Method for realising a group call in a digital radio network |
| 01/14/1997 | US5594904 Tracing with keys and locks |
| 01/14/1997 | US5594902 Custom service control system |
| 01/14/1997 | US5594798 Secure telecommunications |
| 01/14/1997 | US5594791 Method and apparatus for providing result-oriented customer service |
| 01/14/1997 | US5594790 Method for selecting and controlling the automatic dialing of a call record campaign |
| 01/14/1997 | US5594789 Transaction implementation in video dial tone network |
| 01/14/1997 | US5594788 Telephone system and interface device |
| 01/14/1997 | US5594784 Apparatus and method for transparent telephony utilizing speech-based signaling for initiating and handling calls |
| 01/14/1997 | US5594726 Frequency agile broadband communications system |
| 01/14/1997 | US5594722 Personal communication method and system |
| 01/14/1997 | US5594721 Method and system for implementing an application protocol in a communication network |
| 01/14/1997 | US5594719 Method for controlling echo canceller circuit |
| 01/14/1997 | US5594638 Computerized medical diagnostic system including re-enter function and sensitivity factors |
| 01/14/1997 | CA2063311C In-service activator for a broadband exchanger |
| 01/09/1997 | WO1997001230A1 System and method for reconfiguring a telecommunications network to its normal state after repair of fault |
| 01/09/1997 | WO1997001143A1 Spare links optimization in a distributed restoration scheme |
| 01/09/1997 | DE19524405A1 Verfahren zur Gesprächsdatenerfassung Process for Call Detail Recording |
| 01/09/1997 | CA2224733A1 Spare links optimization in a distributed restoration scheme |
| 01/09/1997 | CA2224591A1 System and method for reconfiguring a telecommunications network to its normal state after repair of fault |
| 01/08/1997 | EP0752129A1 A method and apparatus for providing a human-machine dialog supportable by operator intervention |
| 01/08/1997 | EP0752113A1 A position determination method for use with analog cellular system |
| 01/08/1997 | EP0372035B1 Dynamic callback technique |
| 01/08/1997 | CN1140005A Radiotelephone system for a limited group of users |
| 01/08/1997 | CN1139850A Multiplex calling simultaneous transmission system and switchboard |
| 01/07/1997 | US5592586 Voice compression system and method |
| 01/07/1997 | US5592547 Processing audio signals using a discrete state machine |
| 01/07/1997 | US5592545 Voice enhancement system and method |
| 01/07/1997 | US5592543 Method and system for allocating agent resources to a telephone call campaign |
| 01/07/1997 | US5592542 Call distribution control method and call distribution control system |
| 01/07/1997 | US5592541 Apparatus and method for forwarding incoming calls |
| 01/07/1997 | US5592537 Method of providing message service for limited access telecommunications |
| 01/07/1997 | US5592533 Personal communication service registration system and method |
| 01/07/1997 | US5592530 Telephone switch dual monitors |
| 01/07/1997 | US5592529 Telephone inadvertent off-hook condition detector |
| 01/07/1997 | US5592528 Battery charging and signalling interconnect arrangement for craftsperson's |
| 01/07/1997 | US5592478 Broadband conference system |
| 01/07/1997 | US5592466 Network interconnect backup |
| 01/07/1997 | CA2094640C Arrangement for bounding jitter in a priority-based switching system |
| 01/07/1997 | CA2066534C Transferring lines in a digital loop carrier transmission system |
| 01/07/1997 | CA2064487C Processing interactions among telecommunications call features |
| 01/07/1997 | CA2063931C Method of rerouting telecommunications traffic |
| 01/07/1997 | CA1338833C Pay-per view catv system |
| 01/03/1997 | WO1997000588A1 Communication system and call establishment methods |
| 01/03/1997 | WO1997000570A1 Dynamically negotiated application program interface method |
| 01/03/1997 | WO1996029811A3 Communication system for detecting an unauthorized intruder terminal unit |
| 01/03/1997 | CA2197642A1 Communication system and call establishment methods |
| 01/02/1997 | EP0751691A2 A method for routing telephone calls to subscribers of different service providers within a common numbering plan area |
| 01/02/1997 | EP0751662A2 Method for charge information and service control device subscriber switch, terminal and communication network |
| 01/02/1997 | EP0750823A1 Test port for network interface device module |
| 01/02/1997 | EP0750815A1 Electronic unit |
| 01/02/1997 | DE19524024A1 Verfahren zum Spezifizieren von multifunktionalen Baugruppen in einem Kommunikationssystem A method for specifying multifunctional modules in a communications system |
| 01/01/1997 | CN1139505A Method for off-hook detection during ringing and the use of a subscriber line interface circuit for off-hook detection during ringing |
| 01/01/1997 | CN1139504A Optimizing the capacity of telecommunication system |
| 01/01/1997 | CN1139326A Method of operating telecommunication network as well as network-access exchange and transit exchange |
| 12/31/1996 | US5590382 Personal digital assistant module having a multi-portion keyboard with inductive coupling |
| 12/31/1996 | US5590189 Method of operating a microprocessor controlled telephone set |
| 12/31/1996 | US5590188 Rules-based call routing |
| 12/31/1996 | US5590187 Call transfer with automatic return |
| 12/31/1996 | US5590186 System and method for redirecting a telephone call with call merging |
| 12/31/1996 | US5590184 Communications privacy protection system by replacing calling party number with non-assigned number |
| 12/31/1996 | US5590183 For use in telephone communication between subscribers |
| 12/31/1996 | US5590181 Call-processing system and method |
| 12/31/1996 | US5590180 Communication method of supplying information in intelligent network and apparatus therefor |
| 12/31/1996 | US5590178 Electronic mail system linked with telephone |
| 12/31/1996 | US5590171 In an intelligent switched telephone network |
| 12/31/1996 | US5590129 Single stage telecommunications switch with partitioned processors |
| 12/31/1996 | US5590128 Dial lists for computer-based conferencing systems |
| 12/31/1996 | US5590127 Multimedia conference call providing adjustable bandwidth for individual communication terminals |
| 12/31/1996 | US5590126 Method of call establishment in a communications network |
| 12/31/1996 | US5589873 Multipoint television conference system with a multipoint control unit for registering information about TV conference rooms and room groups and allowing a selected room to participate in the TV conference based on registered information |
| 12/31/1996 | CA2180228A1 Method for routing telephone calls to subscribers of different service providers within a common numbering plan area |
| 12/31/1996 | CA2086694C System, data processing method and program to provide a programmable interface between a workstation and an archive server to automatically store telephone transaction information |
| 12/31/1996 | CA2073555C Personal communication system |
| 12/29/1996 | CA2180173A1 Method of providing call charge information as well as service control facility, subscriber termimal exchange, terminal, and communication network |
| 12/27/1996 | WO1996042176A1 Remote vocoding over a long distance link |
| 12/27/1996 | WO1996042173A1 Resource availability in intelligent telecommunications networks |
| 12/27/1996 | WO1996042164A1 Voice processing system |
| 12/27/1996 | WO1996042163A1 A method for providing a delivery confirmation of message deliveries made in a telephone network |
| 12/27/1996 | WO1996042152A1 Audio-video conferencing system |
| 12/27/1996 | WO1996042142A1 Acoustic echo elimination in a digital mobile communications system |
| 12/27/1996 | EP0750434A2 Method for automatic maintenance of a local number portability database |
| 12/27/1996 | EP0750413A2 Telephone conferencing system |
| 12/27/1996 | EP0749668A1 Broadband switching network |
| 12/27/1996 | EP0749663A1 Telecommunications switch with improved redundancy |
| 12/27/1996 | EP0749662A1 Bandwidth management in a switched telecommunications network |
| 12/27/1996 | EP0749658A1 Method and apparatus for reliable access to audio and facsimile message storage and retrieval system |
| 12/27/1996 | EP0749655A1 Voice interface board for use in an operator system |
| 12/27/1996 | EP0749653A1 Expandable telecommunications system |
| 12/27/1996 | EP0749618A1 Method to identify clients and method for using a teleterminal device |
| 12/27/1996 | CA2224641A1 Audio-video conferencing system |
| 12/27/1996 | CA2222317A1 A method for providing a delivery confirmation of message deliveries made in a telephone network |
| 12/27/1996 | CA2220069A1 Resource availability in intelligent telecommunications networks |
| 12/25/1996 | CN2243751Y Controller for prevention of illegal connection of telephone line |
| 12/25/1996 | CN1138935A Monitoring of the operation of a subscriber unit |
| 12/25/1996 | CN1138934A Maintaining group data in a mobile communications system |
| 12/25/1996 | CN1138789A Method in communications system for providing out-of band signaling response based on predetermined conditions |
| 12/24/1996 | US5588051 Method for dynamically provisioning telephone service |
| 12/24/1996 | US5588048 Geographically mapped telephone routing method and system |
| 12/24/1996 | US5588047 Interface for simulating a telephone line connection between two devices for establishing a communication path between the devices |