| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
|---|
| 05/05/1993 | EP0540258A2 Dynamic routing-administration |
| 05/05/1993 | EP0540257A2 User-code based call treatment |
| 05/05/1993 | EP0540256A2 Telecommunications call-processing arrangement |
| 05/05/1993 | EP0540255A2 Context-dependent call-feature selection in a telecommunication system |
| 05/05/1993 | EP0540254A2 Dialed number recognition arrangement |
| 05/05/1993 | EP0540253A2 Dynamic tone-adminstration in a switching system |
| 05/05/1993 | EP0540219A2 Telecommunication interconnection testing |
| 05/05/1993 | EP0539761A1 Method and system to detect a faulty channel within a channel group |
| 05/05/1993 | CN2132359Y Programme control measuring position |
| 05/05/1993 | CN2132358Y Cross-bar automatic exchange developer |
| 05/04/1993 | US5208850 Multi-media information service center and multi-media communication system |
| 05/04/1993 | US5208848 Telecommunications call processing |
| 05/04/1993 | US5208846 Subscriber loop tester for telephone switching systems |
| 05/04/1993 | US5208803 Circuit for testing digital lines |
| 05/04/1993 | US5208718 Protection circuit |
| 04/29/1993 | WO1993008666A1 Method for the non-hierarchical routing of traffic in a communications net |
| 04/29/1993 | WO1993008661A1 Flexible call detail recording system |
| 04/28/1993 | EP0539105A2 Automatic customer call back for automatic call distribution systems |
| 04/28/1993 | EP0539104A2 Home agent telecommunication technique |
| 04/28/1993 | EP0539102A2 Use of incoming caller line indentification |
| 04/28/1993 | EP0539101A2 Calling line identification |
| 04/28/1993 | EP0539028A2 Maintenance termination unit for ISDN |
| 04/28/1993 | EP0539017A2 Adaptive frequency dependent compensation for telecommunication channels |
| 04/28/1993 | EP0539016A2 Data packet switch apparatus |
| 04/28/1993 | EP0538536A1 Method for detecting voice presence on a communication line |
| 04/28/1993 | CN1071543A Star switching network for communication |
| 04/27/1993 | US5206904 Apparatus for driving a service function unit of a multi-function telephone set |
| 04/27/1993 | US5206903 Automatic call distribution based on matching required skills with agents skills |
| 04/27/1993 | US5206902 Network signaling arrangement for controlling tandem network functions |
| 04/27/1993 | US5206901 Method and apparatus for alerting multiple telephones for an incoming call |
| 04/27/1993 | US5206900 Automated attendant |
| 04/27/1993 | US5206899 Arrangement for outbound telecommunications |
| 04/27/1993 | US5206743 Facsimile routing methodology |
| 04/27/1993 | CA1317016C Electronic apparatus for "hands off" control of a voice mail system |
| 04/22/1993 | DE4134477A1 Controlling engagement direction within exchange conductor bundle - using traffic direction memory for conductor engagement facility in each engagement direction |
| 04/21/1993 | EP0537286A1 Telephone paging system for connecting calling and paged parties |
| 04/21/1993 | EP0537153A1 Routing of network traffic using discrete traffic measurement data |
| 04/21/1993 | EP0393126B1 Routing of network traffic |
| 04/21/1993 | EP0313562B1 Telephone on-hold device |
| 04/21/1993 | CN1020365C Automatic answering and connecting method for micro-processor controlled PBX capable of direct inward dialing |
| 04/20/1993 | US5204955 Network management method and system |
| 04/20/1993 | US5204894 Personal electronic directory |
| 04/20/1993 | US5204861 Key telephone system with enhanced connectivity |
| 04/20/1993 | US5204857 ATM exchange system |
| 04/20/1993 | US5204799 Protective arrangement for telecommunications line interface circuit |
| 04/17/1993 | WO1993008658A1 Packet switch |
| 04/15/1993 | WO1993007723A1 Method for realising a group call in a digital radio network |
| 04/15/1993 | WO1993007722A1 Congestion tuning of telecommunications networks |
| 04/15/1993 | WO1993007721A1 A telecommunication system and a method for matching the numbering schemes of two telecommunication systems |
| 04/15/1993 | WO1993007705A1 Method and apparatus for automatic telephone scheduling system |
| 04/15/1993 | WO1993007654A1 Telecommunications terminal block |
| 04/15/1993 | WO1993007566A1 Temporary message routing and destination selection |
| 04/14/1993 | EP0536949A2 An incoming communications forwarding technique utilizing a called party location indicator |
| 04/14/1993 | EP0536544A2 Portable telephone system |
| 04/13/1993 | US5202921 Method and apparatus for authenticating users of a communication system to each other |
| 04/13/1993 | US5202882 Method for checking transmission properties of a subscriber line circuit |
| 04/13/1993 | CA1316277C Loop status verification system |
| 04/13/1993 | CA1316242C Control system for communication between units |
| 04/11/1993 | CA2068922A1 Ringtrip detection circuit for use on telephone systems |
| 04/08/1993 | DE4132988A1 Telephone conference circuit subscriber identification - evaluating level for each individual subscriber to verify active condition |
| 04/07/1993 | EP0535860A2 Congestion control for high speed packet networks |
| 04/07/1993 | EP0535857A2 Communications network class-of-service routing |
| 04/07/1993 | EP0535784A2 Message transmission system |
| 04/07/1993 | EP0535602A2 Programm-controlled communications system in which a connection request is simultaneously signalled at several communications terminals |
| 04/07/1993 | EP0535601A2 Method for the establishment of conference connections in a processor controlled communication system |
| 04/07/1993 | EP0535270A1 Operations monitoring system |
| 04/07/1993 | EP0535220A1 Method and apparatus for the ordering from remote locations |
| 04/07/1993 | EP0418282A4 Portable call generator |
| 04/06/1993 | US5201045 Arrangement and method of downloading data to a plurality of destinations in a digital telephone system |
| 04/06/1993 | US5201028 System for distinguishing or counting spoken itemized expressions |
| 04/06/1993 | US5200996 Station controller for multi-line pick-up and automatic monitoring of telephone station moves |
| 04/06/1993 | US5200990 Method of recovering speech path of pre-engaged call on restarting keyphone exchange system |
| 04/06/1993 | US5200989 Wide band communication system transmitting video and audio signals among a plurality of users |
| 04/06/1993 | US5200951 Apparatus and method for transmitting messages between a plurality of subscriber stations |
| 04/06/1993 | CA1315858C Telecommunications wiring test apparatus and method |
| 04/01/1993 | WO1993006692A1 Pstn architecture for video-on-demand services |
| 04/01/1993 | WO1993006681A1 Telephone line test set with a speakerphone for communications |
| 04/01/1993 | WO1993006680A1 Configurable telephone interface for electronic devices |
| 04/01/1993 | WO1993002514A3 Apparatus for high speed data transfer |
| 04/01/1993 | DE4132146A1 Controlling subscriber terminals to establish connection - using central control for conversion of pulse into message for answering machine when calling subscriber hangs up |
| 04/01/1993 | CA2120031A1 Pstn architecture for video-on-demand services |
| 03/31/1993 | EP0534785A2 Broadcast system for distributed controlled switching network |
| 03/31/1993 | EP0534784A2 Distributed controlled switching network for telephone communications |
| 03/31/1993 | EP0534783A2 Key telephone system with virtual private lines |
| 03/31/1993 | EP0534679A2 Improved centralized security control system |
| 03/31/1993 | EP0534673A2 Improved method for secure access control |
| 03/31/1993 | EP0534493A2 Data transfer system including exchange |
| 03/31/1993 | EP0534241A2 Test and simulation method for ISDN interexchange signalling |
| 03/31/1993 | CN1070527A Program controlled magneto system telephone user exchange system |
| 03/31/1993 | CA2052498A1 System for interfacing telephone sets with a centrex system |
| 03/30/1993 | US5199062 Telephone communications system including a digital telephone switch, a voice response unit and a stored program sequence for controlling both the switch and the voice response unit |
| 03/30/1993 | US5199029 Circuit arrangement for establishing conference connections |
| 03/30/1993 | US5198957 Transient protection circuit using common drain field effect transistors |
| 03/24/1993 | EP0533510A2 Cordless key telephone system with multiple tenant facility |
| 03/23/1993 | US5197096 Switching method and apparatus having subscriber state management function |
| 03/23/1993 | US5197092 Location registration system for a personal communicator such as a cellular telephone |
| 03/23/1993 | CA1315031C Method and apparatus for accessing a facsimile store and forward network |
| 03/23/1993 | CA1315030C Two-wire telecommunications line detection arrangements |
| 03/18/1993 | WO1993005597A1 Adaptive echo canceller for voice messaging system |
| 03/18/1993 | WO1993005595A1 Multi-speaker conferencing over narrowband channels |