| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
|---|
| 01/17/1993 | CA2071191A1 Multi-function telephone apparatus and control method |
| 01/14/1993 | DE4219171A1 Map image reproducing system or vehicle navigation - derives coordinates of vehicle destination from post code entered to define map region |
| 01/14/1993 | DE4204517A1 Microprocessor-controlled telephone circuit - uses four-wire bus for parallel subscriber devices and two-wire line for direct connection of main handset |
| 01/14/1993 | DE4121195A1 Telephone installation with several telephone appts. - has at least one handset with microphone, hearing capsule, and transceiver device |
| 01/13/1993 | EP0522782A2 Cordless telephone system for moving conveyances |
| 01/13/1993 | EP0522762A2 Mobile phone |
| 01/13/1993 | EP0522725A2 Voice messaging system with voice activated prompt interrupt |
| 01/13/1993 | EP0522661A2 Method and apparatus for pulse/tone detection and selection |
| 01/12/1993 | US5179724 Conserving power in hand held mobile telephones during a receiving mode of operation |
| 01/12/1993 | US5179723 Mobile telephone device for carrying out an aging operation without interference with a mobile telephone system |
| 01/12/1993 | US5179590 Mobile telephone rack assembly |
| 01/12/1993 | US5178477 Ergonomic keyboard input device |
| 01/12/1993 | CA1312668C Method for entering digit sequences by voice command |
| 01/07/1993 | WO1993000762A1 Telephone call control device |
| 01/07/1993 | EP0521609A2 Radio phone composable of separate modules |
| 01/07/1993 | DE4221306A1 Sensor control circuit for electronic routing of telephone signals - comprises in=line coil which couples electrical signal with magnetic sensor e.g. Hall element to provide electrical isolation |
| 01/07/1993 | DE4121196A1 Vol. setting control for telephone subscriber's appts. - uses call tone generator providing different tone signal during setting procedure |
| 01/05/1993 | US5177785 Method and system for secure telecommunications |
| 01/05/1993 | US5177784 Head-set telephone device and method |
| 01/05/1993 | US5177783 Switching circuit in a telephone device for selecting between two-line and keysystem modes of operation |
| 01/05/1993 | US5177741 Subscriber unit for wireless digital telephone system |
| 01/05/1993 | US5177492 Rod antenna mounting mechanism of radio terminal equipment |
| 01/05/1993 | CA1312367C Apparatus for controlling calls in a mobile communication system |
| 12/30/1992 | EP0520215A2 Annotation in a communication system with redialing |
| 12/30/1992 | EP0520067A1 Improved audio distribution system. |
| 12/30/1992 | CN2126486U Harmonic factor testing apparatus for intelligence-power telephone |
| 12/30/1992 | CN2126485U Lighting device on telephone |
| 12/30/1992 | CN2126484U Hearing-aid type antinoise telephone |
| 12/30/1992 | CN1067542A Hinge apparatus having self-latching hinge shaft for foldable radiotele-phones |
| 12/30/1992 | CN1019711B Superminiature communication insulated isolation transformer and device thereof |
| 12/29/1992 | US5175874 Radiotelephone message processing for low power operation |
| 12/29/1992 | US5175869 Automatic data transmission system |
| 12/29/1992 | US5175760 Communication apparatus having data transfer function |
| 12/29/1992 | US5175759 Communications device with movable element control interface |
| 12/24/1992 | DE4120079A1 Fraudulent call prevention method for multifrequency-dialling telephone station - delaying activation of microphone while called number is identified as not on exclusion list |
| 12/24/1992 | DE4120077A1 Ringing current for hands-free telephone station - includes separate polarity protection for amplifier and control microprocessor drawing upon isolated DC supply |
| 12/24/1992 | DE4119556A1 Local telephone system for home security - has controller with computer and programmed memory containing action listing that responds to telephone system transmitted commands |
| 12/23/1992 | WO1992022974A1 Improvements relating to caller identification |
| 12/23/1992 | WO1992022973A1 Printer for identification mark |
| 12/23/1992 | EP0519285A2 Arrangement for diverting a call in a mobile radio system |
| 12/23/1992 | CN1067346A Multifunctional converter for mutually between telephone extensions |
| 12/23/1992 | CN1019629B Double annular ring speaker gasket |
| 12/23/1992 | CA2111862A1 Improvements relating to caller identification |
| 12/22/1992 | US5173937 Device for receiving memorandum board for telephone |
| 12/22/1992 | US5173927 Frequency detector system on a digital phase locked loop |
| 12/17/1992 | DE4216601A1 Screening telephone appts. connection - automatically forming or simulating connection between exchange and telephone appts. in presettable time intervals |
| 12/16/1992 | EP0518526A1 Portable radio apparatus of foldable type |
| 12/16/1992 | EP0518335A2 Facsimile apparatus |
| 12/16/1992 | EP0518334A2 Facsimile apparatus |
| 12/16/1992 | EP0518274A1 Hands free phone set |
| 12/16/1992 | EP0517942A1 Method for modifying a signalisation procedure implemented in a telecommunication terminal |
| 12/16/1992 | CN2125215U Civil telephone recording meassage controller |
| 12/16/1992 | CN2125214U Automatic answering call device for telephone |
| 12/16/1992 | CN2125213U Thin slice type sterilized aromatic device |
| 12/15/1992 | US5172412 Subscriber circuit capable of suppressing in-phase induced noise |
| 12/15/1992 | US5172410 Conference telephone system and method |
| 12/15/1992 | US5172408 Speakerphone state-controlled alerting arrangement |
| 12/15/1992 | US5172406 Dtmf signal detection apparatus |
| 12/15/1992 | US5172405 Answering machine arrangement |
| 12/15/1992 | US5172404 System for coupling telephone answering device and voice mail apparatus together |
| 12/15/1992 | US5172243 Data transmitter-receiver apparatus for transmitting and receiving image data |
| 12/15/1992 | US5172111 Stored media screening device |
| 12/12/1992 | CA2070956A1 Headset and use thereof |
| 12/10/1992 | WO1992022165A1 Voice services equipment |
| 12/10/1992 | WO1992022164A1 Hunt and seek telephone system |
| 12/10/1992 | WO1992022146A1 Portable radio battery latch |
| 12/10/1992 | WO1992022145A1 Battery saver for a communication device |
| 12/09/1992 | EP0516840A1 Automatic screen blanking in a mobile radio data terminal |
| 12/09/1992 | CN2124532U Switchover caller for bridging telephone |
| 12/09/1992 | CN2124531U Dial telephone with improved bell circuit |
| 12/09/1992 | CN1066949A Automatic person calling device for telephone |
| 12/09/1992 | CN1019442B Secondary dialling method within acoustic frequency band |
| 12/08/1992 | US5170429 Portable telecommunications test instrument with a talk battery circuit |
| 12/08/1992 | US5170427 Audio and video communications terminal with improved adjustments |
| 12/08/1992 | CA1311316C System for and method of multiplexing speech signals utilizing priority signals for individual transmission channels |
| 12/08/1992 | CA1311291C Talker speech level control circuit for telephone transmitter by piezoelectric conversion |
| 12/03/1992 | DE4217540A1 Telefon Phone |
| 12/03/1992 | DE4117598A1 Telephone with slim casing and loudspeaker - has loudspeaker compartment forming two-cavity resonance system in telephone housing, with tuned frequency characteristics for ringing tone generation and hands-free operation |
| 12/02/1992 | EP0516124A2 A telephone apparatus with memory means for storing names, telephone numbers and time information |
| 12/02/1992 | EP0515966A2 Key telephone exchange |
| 12/02/1992 | EP0515741A1 Digital recording and playback module system |
| 12/02/1992 | EP0515703A1 Broadband conference system |
| 12/02/1992 | EP0489838A4 Battery saver for a tdm system |
| 12/02/1992 | CN2123843U Automat answering call recordor for telephone |
| 12/01/1992 | US5168522 Wireless telephone with frequency inversion scrambling |
| 12/01/1992 | US5168517 Apparatus and methods for selectively forwarding telephone calls |
| 12/01/1992 | US5168516 Radio telephone having improved modulation characteristics for data transmission |
| 12/01/1992 | US5168278 Antenna device for electronic devices |
| 12/01/1992 | CA1311068C Computer telecommunications signalling interface |
| 12/01/1992 | CA1311067C Customer line tester |
| 11/26/1992 | WO1992021091A1 User interface system having programmable user interface elements |
| 11/26/1992 | WO1991001067A3 Method for authentication and protection of subscribers in telecommunication systems |
| 11/25/1992 | EP0515102A2 Automatic loss control circuit in a digital loop transmission system |
| 11/25/1992 | EP0514969A1 Telecommunication terminal |
| 11/25/1992 | EP0514813A2 Mobile telephone device wherein an adder supplies a sum of audio and out-of audio band signals to a compressor circuit |
| 11/25/1992 | EP0514695A2 Telephone set with ring tone inhibit circuit |
| 11/25/1992 | CN2123150U Extension arrangement for party-line telephone set |
| 11/25/1992 | CN2123149U Code selective dual-functional speech-amplifying telephone for use in mines |
| 11/25/1992 | CN1066546A Receiving-repeating device for automatic switching signal of long-distance telephone |
| 11/24/1992 | US5166975 Communication terminal equipment |