| Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881) |
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| 09/02/1993 | WO1993017514A1 Telephone subscriber line circuit, components and methods |
| 09/02/1993 | DE4306081A1 Automatic warning appts. for breakage in cable - detects if abnormal condition exists in cable and then automatically switches over to spare cable and continues transmission if no further abnormal condition is detected |
| 09/02/1993 | CA2130183A1 Telephone subscriber line circuit, components and methods |
| 09/01/1993 | EP0558326A1 Enhanced call-back authentication method and apparatus |
| 09/01/1993 | EP0558197A1 Hierarchical bus type multidirectional multiplex communication system |
| 09/01/1993 | EP0557813A1 System of digital-speech-memory for a telecommunication system |
| 09/01/1993 | EP0557777A1 Program-controlled telecommunication-system with the option of automatic call-back |
| 09/01/1993 | EP0557647A2 Mnemonic and synonymic addressing in a telecommunications system |
| 09/01/1993 | EP0557646A2 Arrangement for visualization, of a dialed number |
| 09/01/1993 | EP0557645A2 Call number translator |
| 09/01/1993 | EP0557644A2 Arrangement providing numbering independence for shared PABX |
| 09/01/1993 | EP0557643A2 Mnemonic and synonymic addressing in a telecommunications system |
| 08/31/1993 | US5241588 Systems and processes providing programmable or customized customer telephone information services |
| 08/31/1993 | US5241586 Voice and text annotation of a call log database |
| 08/31/1993 | US5241584 Response time evaluation unit |
| 08/31/1993 | US5241581 Maintenance terminal of a validation and identification unit |
| 08/31/1993 | US5241580 Method for validating customized telephone services |
| 08/31/1993 | US5241579 Status management method of a signalling service device in an electric switching system |
| 08/31/1993 | US5241409 Communications network with switching distributed among a central switching node and optical input and output sub-networks |
| 08/31/1993 | CA2022320C Dynamic circuit identifier |
| 08/26/1993 | DE4304924A1 User terminal adaption system for telecommunications network - assigns logic permutations for each terminal set up in dependence on identified terminal user |
| 08/25/1993 | EP0557055A1 Subscriber initiated non-intrusive network-based analysis of facsimile transmissions |
| 08/25/1993 | EP0556515A2 Telecommunication switching system having adaptive routing switching nodes |
| 08/25/1993 | CN2141154Y Small-sized all-automatic telephone exchange |
| 08/24/1993 | US5239574 Voice processing system |
| 08/24/1993 | US5239573 Telephone terminal incorporating speech synthesizer for enhanced communication |
| 08/24/1993 | US5239570 9-1-1 Switched access system |
| 08/24/1993 | US5239460 Arrangement for motivating telemarketing agents |
| 08/24/1993 | CA1321666C Telephone answering service with integrated voice and textual message storage |
| 08/20/1993 | EP0605454A4 Pstn architecture for video-on-demand services. |
| 08/19/1993 | WO1993016564A1 A person paging method |
| 08/19/1993 | WO1993016547A1 A method of establishing cooperation with a functionality |
| 08/19/1993 | WO1993016545A1 Method of organizing communication and system for carrying out the method |
| 08/19/1993 | WO1993016542A1 Message recording machine |
| 08/19/1993 | CA2129544A1 A person paging method |
| 08/18/1993 | WO1993016546A1 Method and system for supporting communication |
| 08/18/1993 | WO1993016544A1 A method of establishing a connection and a system for practicing the method |
| 08/18/1993 | WO1993016543A1 A method of producing an intelligent network service |
| 08/18/1993 | EP0555926A1 Method and means for detecting a routing loop in a telecommunication network |
| 08/18/1993 | EP0555297A1 Transaction processing |
| 08/18/1993 | CN1021868C Digital multiple frequency signal receiver |
| 08/17/1993 | US5237604 Arrangement for serving a telephone office code from two switching systems |
| 08/17/1993 | US5237571 Broadcast system for distributed switching network |
| 08/12/1993 | DE4203968A1 Checking data line in multiplex system using loop connection - generating control signal from transmitted loop signal and returning loop signal as stop bit of data channel |
| 08/11/1993 | EP0555014A2 Method for the transmission of message associated user-to-user information |
| 08/11/1993 | EP0554980A1 Adjunct processor embedded in a switching system |
| 08/11/1993 | EP0554626A2 Time division multiplexer chip in a voice processing system |
| 08/11/1993 | EP0554456A1 Facsimile-mail device |
| 08/11/1993 | CN1075239A Remote-controlled master switch facility |
| 08/10/1993 | US5235630 Emergency call station identification system and method |
| 08/10/1993 | US5235629 Apparatus for telephone line checking |
| 08/06/1993 | CA2060738A1 Telephone without numbers |
| 08/05/1993 | WO1993015584A2 Facsimile arrangement |
| 08/05/1993 | WO1993015570A1 Delay circuit for de-interleaving isdn channels |
| 08/05/1993 | WO1993015564A1 Near-end communications line characteristic measuring system |
| 08/05/1993 | DE4202670A1 Telephone exchange operable by visually handicapped person - has personal computer interfaced to enlarged-display monitor and Braille terminal with loudspeaker facility |
| 08/04/1993 | EP0553754A1 Private branch exchange by a collective line |
| 08/04/1993 | EP0553753A1 Private branch exchange with grouped lines |
| 08/04/1993 | EP0553436A2 Method for testing the operation of transmission links for telecommunication signals |
| 08/04/1993 | EP0537153A4 Routing of network traffic using discrete traffic measurement data |
| 08/04/1993 | EP0516651A4 Method and system for establishing link with wireless telephone |
| 08/03/1993 | US5233648 Direct dialing-in method in a pabx |
| 08/03/1993 | US5233605 Method for assuring fidelity of a summing process |
| 08/03/1993 | US5233600 Method and apparatus for identifying a failed span in a network of span interconnected nodes |
| 08/03/1993 | CA1321004C Integrated telecommunication system with improved digital voice response |
| 08/03/1993 | CA1321002C Phone management server for use with a personal computer lan |
| 08/03/1993 | CA1321000C Private branch exchange system with specific information transmitting function |
| 07/29/1993 | DE4202041A1 Simplification of servicing telecommunication end device - using key to selectively trigger function or display function depending on actuation of key |
| 07/29/1993 | DE4202040A1 Simplifying servicing of telecommunication terminal devices - displaying possible characteristics for servicing in each state of end device by operation of keyboard button |
| 07/27/1993 | US5231658 Telephone privacy device |
| 07/22/1993 | DE4139610A1 Adjusting subscriber terminal signal transmission parameters - taking place after loop closure recognition and maintaining until loop end closure |
| 07/21/1993 | EP0552051A2 Radio paging system with voice transfer function and radio pager |
| 07/21/1993 | EP0551715A2 System and method for controlling outbound and inbound calls in a telephone communication system |
| 07/21/1993 | EP0551565A2 Remote disconnection device |
| 07/21/1993 | EP0551530A1 Amplifier biasing circuit suitable for a ring-trip detection system |
| 07/21/1993 | CN1074572A Telecommunications call-processing arrangement |
| 07/21/1993 | CN1021690C Telecommunication network including central back-up memory |
| 07/20/1993 | US5230018 Communication system for activating an optical display in a communication terminal of a communication switching station |
| 07/20/1993 | US5230017 Communication line monitoring system |
| 07/20/1993 | CA1320580C Customer account online servicing system |
| 07/20/1993 | CA1320556C Telephone system digital channel bank interface |
| 07/20/1993 | CA1320555C Private automatic branch exchange system with line accessing number adding feature |
| 07/20/1993 | CA1320554C Password controlled switching system |
| 07/20/1993 | CA1320553C Pulse code modulation terminal equipment |
| 07/14/1993 | EP0550975A2 A method of redirecting a telephone call to an alternate destination |
| 07/14/1993 | EP0550484A1 Communication system, in particular isdn-capable telecommunications private automatic branch exchange |
| 07/14/1993 | CN1021614C Extension telephone automatic call dialed from different switchboard |
| 07/14/1993 | CA2087065A1 Apparatus for telephone line checking |
| 07/13/1993 | US5228073 Call identification display system |
| 07/13/1993 | CA1320292C Method and apparatus for customer account servicing |
| 07/13/1993 | CA1320291C Remote testing of metallic loops with a trans hybrid signal |
| 07/13/1993 | CA1320259C Broadband signal switching equipment |
| 07/12/1993 | CA2083205A1 Remote-controlled master switch facility |
| 07/08/1993 | WO1993013518A1 Voice controlled messaging system and processing method |
| 07/07/1993 | EP0550414A2 Voice conferencing system and method of a non-blocking exchange switch |
| 07/07/1993 | EP0550275A2 Audio circuit board for a modular digital voice processing system |
| 07/07/1993 | EP0550274A2 Modular digital voice processing system |
| 07/07/1993 | EP0550273A2 Digital signal processing circuit board usable in a voice processing system |
| 07/07/1993 | EP0550181A2 Automatic initialization of a distributed telecommunication system |
| 07/07/1993 | EP0550180A2 Rerouting in a distributed telecommunication system |