| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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| 08/25/1992 | US5142573 Telephone apparatus for radio communication with an adaptor |
| 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 | US5142569 Apparatus for selectively enabling subscriber device to respond to ringing signal in dependence upon ringing cadence |
| 08/25/1992 | US5142564 Modular telephone answering machine |
| 08/25/1992 | US5142563 Cordless telephone system with quick charge mode for recharging battery |
| 08/25/1992 | US5142560 Wiretap detector and telephone loop monitor |
| 08/25/1992 | US5141446 Device comprising two components that are hinged together and that are interconnected by an electrical connection |
| 08/21/1992 | CA2061523A1 Method and apparatus for a dual mode keypad permitting one-touch telephone number dialing |
| 08/20/1992 | WO1992014328A1 Telecommunication equipment |
| 08/19/1992 | EP0499440A2 A circuit arrangement for a mobile telephone |
| 08/19/1992 | EP0499012A2 Portable, compact voice and data telecommunications apparatus |
| 08/19/1992 | EP0498997A2 Telephone apparatus with calling line identification |
| 08/18/1992 | US5140698 Mobile telephone system with intermittent control of receiver components in standby state |
| 08/18/1992 | US5140635 Wireless telephone with frequency inversion scrambling |
| 08/18/1992 | US5140632 Telephone having voice capability adaptor |
| 08/18/1992 | US5140631 Apparatus and method for determining the state of a telephone line |
| 08/18/1992 | US5140630 Added main line apparatus |
| 08/18/1992 | US5140629 Call transfer device for an automatic answering phone using an answering message tape |
| 08/18/1992 | US5140628 Radio telephone system control method |
| 08/18/1992 | US5139319 Exterior structure for cabinet |
| 08/13/1992 | DE4203436A1 Data reduced speech communication based on non-harmonic constituents - involves analogue=digital converter receiving band limited input signal with digital signal divided into twenty one band passes at specific time |
| 08/12/1992 | EP0498734A1 Wire tap detection device on a telephone subscriber line |
| 08/12/1992 | EP0498454A2 Signal processing apparatus |
| 08/12/1992 | EP0498398A2 Mobile telephone |
| 08/12/1992 | CN2112913U Long-distance call limiting and recording telephone |
| 08/12/1992 | CN1063591A Telephone for identifying recipient |
| 08/12/1992 | CN1063589A Mounting assembly for transceiver |
| 08/11/1992 | US5138655 Telephone apparatus capable of setting card unit therein |
| 08/11/1992 | US5138652 Multifunctional telephone answering device |
| 08/11/1992 | US5138651 Cordless loud speaking telephone |
| 08/11/1992 | US5138649 Portable telephone handset with remote control |
| 08/11/1992 | CA1306318C Computer and telephone apparatus with user friendly computer interface and enhanced integrity features |
| 08/06/1992 | WO1992013414A1 Packet transmission system and method utilizing both a data bus and dedicated control lines |
| 08/06/1992 | WO1992013394A1 A holder device for a portable radio |
| 08/06/1992 | WO1992013392A1 Conserving power in hand held mobile telephones during a receiving mode of operation |
| 08/05/1992 | WO1992014345A1 Keypad apparatus |
| 08/05/1992 | WO1992014331A1 Radiotelephone operating technique with multifunctional keys |
| 08/05/1992 | EP0497075A2 Modular public telephone maintenance unit |
| 08/05/1992 | EP0497036A2 Automatically generating telephone directory labels for facsimile devices |
| 08/05/1992 | EP0446297A4 Two-way radio with voice storage |
| 08/05/1992 | CN2112235U Sterilizing and protecting net film for telephone transmitter |
| 08/05/1992 | CN1063390A 通信系统 Communications systems |
| 08/05/1992 | CN1063389A Distinctive ring system for cordless telephone |
| 08/05/1992 | CN1063388A Automatic channel selection system for cordless telephone |
| 08/05/1992 | CA2074164A1 Keypad apparatus |
| 08/04/1992 | US5136640 Replaceable aromatic sticker for use in a telephone handset |
| 08/04/1992 | US5136639 Telephone handset cushion |
| 08/04/1992 | US5136638 Integral handset supporting hook and number card cover |
| 08/04/1992 | US5136637 Method and apparatus for automatic redialing of telephone numbers |
| 08/04/1992 | US5136635 Apparatus and method for securing an armored cord and restraint cable assembly to a telephone handset and housing |
| 08/04/1992 | US5136630 Intrinsically safe telephone |
| 08/04/1992 | US5136629 Radio communication system having control method for shortening call response time |
| 08/04/1992 | US5136229 Power pack device |
| 08/04/1992 | CA1305924C Volume control circuit for use in portable telephone or the like |
| 08/04/1992 | CA1305840C Microphone boom hinge |
| 07/30/1992 | DE4110327C1 Actuator for pushbutton microswitch - has lever pivoted by rod to press operating button of cradle switch of telephone subscriber's appts. when handset is replaced |
| 07/29/1992 | EP0496502A2 Portable facsimile machine |
| 07/29/1992 | EP0496498A2 Time-division duplex radio transceiver |
| 07/29/1992 | EP0496235A2 Telephone handset |
| 07/29/1992 | EP0496216A1 Radio talking set of the electric communications technique |
| 07/29/1992 | EP0496189A1 Support for an electro-acoustic converter |
| 07/29/1992 | CN2111600U Diplex carrier telephone set |
| 07/29/1992 | CN1063185A Detector for use with automatic disconnect feature in telephone answering machine |
| 07/29/1992 | CN1063184A Switching circuit in telephone device for selecting between two-line and keysystem modes of operation |
| 07/28/1992 | US5134717 Radio telephone with repertory dialer |
| 07/28/1992 | US5134710 Method of transmitting call information in a short range mobile telephone system and a radio unit for carrying out the method |
| 07/28/1992 | US5134658 Apparatus for discriminating information signals from noise signals in a communication signal |
| 07/28/1992 | US5134655 Headphone with microphone |
| 07/28/1992 | US5134654 High security upper housing shield for telephone paystation |
| 07/28/1992 | US5134653 Automatic dialing machine |
| 07/28/1992 | US5134649 Acoustic coupler for high-speed modem |
| 07/28/1992 | US5134646 Voice messaging method and apparatus for pay phone telephone systems |
| 07/28/1992 | US5133528 Coinless telephone reinforcing plate |
| 07/23/1992 | WO1992012588A1 Adaptive amplifier circuit |
| 07/22/1992 | EP0495692A2 Call transfer method |
| 07/22/1992 | EP0495672A2 White noise suppression circuit |
| 07/22/1992 | EP0495209A1 Switching circuit having a reduced output impedance |
| 07/22/1992 | CN2110965U Multichannel telephone |
| 07/22/1992 | CN2110964U Adapter for multiparty telephone |
| 07/22/1992 | CN2110963U Safety sparkless telephone for mine |
| 07/21/1992 | US5133007 Side tone correction circuit |
| 07/21/1992 | US5133006 Combination interface circuit for coupling a digital loop carrier telephone system |
| 07/21/1992 | US5133002 Radiotelephone system that maintains synchronization between base and subordinate units while shifting carrier frequencies |
| 07/15/1992 | EP0494780A2 An adapter unit for adaptively supplying a portable radio telephone with power |
| 07/15/1992 | EP0494529A1 Portable telephone |
| 07/15/1992 | EP0494526A2 Telephone apparatus with calling line identification |
| 07/15/1992 | EP0494525A2 Telephone apparatus with calling line identification |
| 07/15/1992 | EP0494462A2 A detector for use with an automatic disconnect feature in a telephone answering machine |
| 07/15/1992 | EP0494461A2 Automatical channel selection system for a cordless telephone |
| 07/15/1992 | EP0494460A2 A switching circuit in a telephone device for selecting between two-line and keysystem modes of operation |
| 07/15/1992 | EP0494459A2 Distinctive ring system for a cordless telephone |
| 07/14/1992 | US5131048 Audio distribution system |
| 07/14/1992 | US5131037 Call clip |
| 07/14/1992 | US5131035 Apparatus and method for protection of coin operated telephones |
| 07/14/1992 | US5131034 Telephone set for use as a desk unit or a wall unit |
| 07/14/1992 | US5131031 Hold circuits for telephone systems |
| 07/14/1992 | US5131030 Light controlled telephone ringer |
| 07/14/1992 | US5131029 Cellular car telephone dialing controller |
| 07/14/1992 | US5131026 Facsimile system having auto-answering function |