| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
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| 09/16/1992 | CN2116312U Automatic central message recorder of telephone |
| 09/16/1992 | CN1064577A Remote line test facility |
| 09/15/1992 | CA1307600C Digital telephony card for use in an operator system |
| 09/09/1992 | EP0502547A2 Multi-location television conference system |
| 09/09/1992 | EP0502104A1 Remote access telephone control system |
| 09/08/1992 | US5146490 Passive telephone line monitoring system |
| 09/08/1992 | US5146488 Multi-media response control system |
| 09/08/1992 | US5146487 Method for creating and composing audio text message |
| 09/08/1992 | US5146474 Circuit arrangement for the routine testing of an interface between line terminator groups and the switching matrix network of a PCM telecommunication switching system |
| 09/08/1992 | US5146384 Automatically resetting protection arrangement for a telephone subscriber line interface circuit |
| 09/08/1992 | US5146349 Facsimile apparatus which can coordinate communication with more than one external apparatus |
| 09/08/1992 | CA1307315C Telephone protection circuit |
| 09/05/1992 | CA2037461A1 Privacy ringing apparatus |
| 09/03/1992 | WO1992015166A1 Integrated application controlled call processing and messaging system |
| 09/03/1992 | WO1992015056A1 Method and apparatus for controlling access to a communication system |
| 09/02/1992 | EP0501903A1 Method and apparatus for flexible and optimal telephone call acceptance and routing |
| 09/02/1992 | EP0501775A2 Remote line test facility |
| 09/02/1992 | EP0501717A2 Two-way paging system with answer-back function |
| 09/02/1992 | EP0501697A2 Mediation of transactions by a communications system |
| 09/02/1992 | EP0501513A2 A call distributing service system for a plurality of terminals |
| 09/02/1992 | EP0501484A2 Information input/output controller and billing system for telephone lines |
| 09/02/1992 | EP0501189A2 System for integrating telephony data with data processing systems |
| 09/02/1992 | EP0500742A1 A speech message recording device |
| 09/01/1992 | US5144653 Telephone system capable of automatically distributing terminating calls and method of performing communication within the telephone system |
| 09/01/1992 | US5144648 Method and apparatus for processing pages |
| 09/01/1992 | US5144625 Digital subscriber line termination with signalling |
| 09/01/1992 | US5144293 Serial link communication system with cascaded switches |
| 09/01/1992 | CA1307063C Anonymous interactive telephone system with expanded outward calling features |
| 08/28/1992 | CA2061899A1 Remote line test facility |
| 08/26/1992 | EP0500119A1 CVD diamond coated cutting tools and method of manufacture |
| 08/26/1992 | EP0500060A2 Method and apparatus for determining playback volume in a messaging system |
| 08/25/1992 | US5142572 Telephone terminal discount accessory device |
| 08/25/1992 | US5142571 Digital telephone set having an emergency switching function and communication system having the same |
| 08/25/1992 | US5142570 Routing of network traffic using discrete traffic measurement data |
| 08/25/1992 | US5142569 Apparatus for selectively enabling subscriber device to respond to ringing signal in dependence upon ringing cadence |
| 08/25/1992 | US5142528 Protocol selector and protocol selection method |
| 08/25/1992 | US5142527 Voice message equipment for an automatic exchange |
| 08/25/1992 | CA1306809C Variable data compression announcement circuit |
| 08/25/1992 | CA1306808C Integrated switching system and announcement circuit |
| 08/25/1992 | CA1306788C More efficient call handling for operator assistance calls |
| 08/25/1992 | CA1306769C Protection devices and arrangements for telephone lines |
| 08/20/1992 | WO1992014330A1 Method and system for reporting voice messages to their receivers in a multi-service network |
| 08/20/1992 | WO1992014329A1 A method for conveying information in a multi-service network |
| 08/20/1992 | WO1992014314A1 Digital/audio interactive communication network |
| 08/19/1992 | EP0499529A2 Optical loop back and line test apparatus |
| 08/19/1992 | EP0499065A2 Optical transmission system for the subscriber connection area with optical amplifiers |
| 08/19/1992 | EP0499008A2 Validation and identification unit maintenance terminal |
| 08/19/1992 | EP0498997A2 Telephone apparatus with calling line identification |
| 08/18/1992 | US5140631 Apparatus and method for determining the state of a telephone line |
| 08/18/1992 | US5140626 Paging system for establishing telephone connection between calling party and paged party |
| 08/18/1992 | US5140625 System for testing 2B1Q telephony loopback circuits and method therefor |
| 08/18/1992 | US5140614 Method and apparatus for detecting digital carrier signals on telephone cables |
| 08/18/1992 | CA1306558C Method and apparatus for predictive dialing |
| 08/12/1992 | EP0498594A2 Telephone connection to a nearby dealer |
| 08/12/1992 | EP0498593A2 Call forwarding system |
| 08/12/1992 | CN1063571A Memory card and switching system suitable for using same |
| 08/12/1992 | CN1017860B Digital key telephone system |
| 08/11/1992 | US5138710 Apparatus and method for providing recoverability in mass storage data base systems without audit trail mechanisms |
| 08/11/1992 | US5138657 Method and apparatus for controlling a digital crossconnect system from a switching system |
| 08/11/1992 | US5138655 Telephone apparatus capable of setting card unit therein |
| 08/11/1992 | US5138648 Public modular-telephone management system |
| 08/11/1992 | US5138614 Transformation method for network conference connections |
| 08/11/1992 | US5138608 Circuit arrangement for testing parts of a digital time-division telecommunication switching center, particularly a telephone switching center |
| 08/09/1992 | CA2055170A1 Call forwarding system |
| 08/06/1992 | WO1992013407A1 Configurable parameterized dtmf detector |
| 08/05/1992 | EP0497578A2 Method and arrangement for recording message receive time and detecting message recall in a radio pager |
| 08/05/1992 | EP0497490A2 Automatically configuring wireless PBX system |
| 08/05/1992 | EP0497075A2 Modular public telephone maintenance unit |
| 08/05/1992 | EP0497022A1 Conference system |
| 08/05/1992 | EP0497000A2 A maintenance communication control system in an ISDN service |
| 08/04/1992 | US5136690 Dynamic graphical analysis of network data |
| 08/04/1992 | US5136648 Message storage security system |
| 08/04/1992 | US5136636 Telephone connection to a nearby dealer |
| 08/04/1992 | US5136633 International authorization system |
| 08/04/1992 | US5136631 Method and apparatus for programming a voice services system |
| 08/04/1992 | US5136581 Arrangement for reserving and allocating a plurality of competing demands for an ordered bus communication network |
| 07/30/1992 | DE4101885A1 Computer-supported telecommunication system - has external computing interface which is available for special services or alarm functions as distinct from e.g. ordinary telephonic communications |
| 07/29/1992 | EP0496622A2 Cordless telephone system and a connecting method of a cordless telephone |
| 07/29/1992 | EP0496061A2 Real-time decentralized network traffic management using a parallel algorithm |
| 07/29/1992 | CN2111601U Positive temp. coefficient safety device for exchange |
| 07/28/1992 | US5134652 Communication console station with priority queuing |
| 07/28/1992 | US5134647 Automatic voice/data messaging enhancements |
| 07/28/1992 | US5134646 Voice messaging method and apparatus for pay phone telephone systems |
| 07/28/1992 | CA1305773C Multi-service telephone switching system |
| 07/23/1992 | WO1992012591A1 Facsimile routing methodology |
| 07/22/1992 | EP0495692A2 Call transfer method |
| 07/22/1992 | EP0495252A1 Memory card and switching system suitable for using the same |
| 07/22/1992 | CN1063007A Pulsed full automatic telephonic extension and exchange method and its device |
| 07/21/1992 | US5133006 Combination interface circuit for coupling a digital loop carrier telephone system |
| 07/21/1992 | US5133004 Digital computer platform for supporting telephone network applications |
| 07/19/1992 | WO1992013340A1 System for distinguishing or counting spoken itemized expressions |
| 07/19/1992 | CA2100784A1 System for distinguishing or counting spoken itemized expressions |
| 07/16/1992 | DE4139265A1 Data access appts. for telecommunication system - has access member to preset data channel, received at network connector |
| 07/15/1992 | EP0494530A2 System for accessing amenities through a public telephone network |
| 07/15/1992 | EP0494526A2 Telephone apparatus with calling line identification |
| 07/15/1992 | EP0494513A2 Telecommunications network restoration architecture |
| 07/15/1992 | CA2059237A1 Memory card and switching system suitable for using the same |
| 07/14/1992 | US5131031 Hold circuits for telephone systems |
| 07/14/1992 | US5131024 Method and apparatus for providing proactive call services following call completion |
| 07/14/1992 | US5130982 Fully shared communications network |