Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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09/28/1994 | EP0617533A2 Apparatus and method for detecting telephone line status |
09/28/1994 | EP0617495A1 Flush-mounted apparatus for communications technology |
09/28/1994 | EP0616749A1 Portable messaging and scheduling device with homebase station |
09/28/1994 | CN2178406Y Automatic calling machine for telephone |
09/27/1994 | US5351289 Caller ID telephone security device |
09/27/1994 | US5351288 Voice bridge for a relay center |
09/27/1994 | US5351283 Vehicle-mounted charging apparatus for portable telephone sets |
09/27/1994 | US5351190 Communication apparatus and method establishing a language dependent sort order search |
09/27/1994 | CA2004675C Radio telephone in which an off operation of an operator-actuated power switch is inhibited during a talk mode |
09/22/1994 | DE4408379A1 Device for remote call control |
09/21/1994 | EP0616459A1 Circuit for transmission of communication-signals |
09/21/1994 | EP0616458A1 Portable telephone set combined with a card |
09/21/1994 | EP0616457A1 Method and device for extending of the used area of handsets in cordless-telephony |
09/21/1994 | EP0615674A1 Network echo canceller |
09/21/1994 | EP0615662A1 Gel filled electrical connector |
09/21/1994 | EP0548069B1 Speaker drive arrangement for loudspeaker telephone |
09/21/1994 | EP0424495B1 Voice messaging for pay phone telephone systems |
09/21/1994 | CN1092570A Portable telephone set |
09/20/1994 | US5349701 Method and apparatus for broken link detect using audio energy level |
09/20/1994 | US5349698 Radio communication system for a selected one of a plurality of terminal units of different kinds |
09/20/1994 | US5349640 Option bus adapter |
09/20/1994 | US5349639 Automatic electronic audio signal attenuating device and method therefor |
09/20/1994 | US5349638 Universal calling/originating number identification |
09/20/1994 | US5349629 Portable telephone with speed dialing |
09/20/1994 | US5349497 Detachable handle structures for terminals |
09/20/1994 | US5349254 Call progress detection circuit |
09/15/1994 | WO1994021091A1 Circuit arrangement for integrating edp systems in the use of telephone installations |
09/15/1994 | WO1994021058A1 Modular radio communications system |
09/15/1994 | WO1994016514A3 Telephone line jack connector |
09/15/1994 | DE4307173A1 Transmission system for transmitting signals between an exchange and at least one terminal |
09/14/1994 | EP0615372A1 Improved data terminal for telephone circuits |
09/14/1994 | EP0615371A2 Audio output equipment for a portable telephone |
09/14/1994 | EP0615210A2 IC-card |
09/14/1994 | EP0614588A1 Radio frequency interference filter |
09/14/1994 | CN2177309Y Anti-theft alarm for telephone |
09/14/1994 | CN2177308Y 永久性夜光电话机壳 Permanent luminous phone cases |
09/13/1994 | US5347573 Method for influencing a signalling procedure implemented in a communication terminal equipment |
09/13/1994 | US5347572 Telephone line monitoring apparatus and method |
09/13/1994 | US5347565 Order wire device having function for reducing noise in communication system having a plurality of order wire devices |
09/13/1994 | US5347562 Synchronizing groups of base stations in time division duplex communication systems |
09/13/1994 | US5347208 Charging equipment for charging a portable apparatus and separable cell pack |
09/13/1994 | US5346111 Portable, personal computer, personal communicator holder |
09/13/1994 | CA2030439C Enhanced privacy feature for telephone systems |
09/08/1994 | DE4406354A1 Circuit arrangement for the integration of EDP systems with the use of telephone systems |
09/08/1994 | DE4330031A1 Circuit arrangement for integration of EDP systems with the use of telephone systems |
09/08/1994 | DE4313026C1 Housing for a communications apparatus |
09/08/1994 | DE4307613A1 Arrangement for keyboards of communication terminals |
09/08/1994 | DE4307164A1 Cordless, mobile telephone |
09/08/1994 | DE4306788A1 Cordless telephone handset |
09/07/1994 | EP0614302A1 Telecommunication device comprising a terminal with interfaces for a chip card and a memory card |
09/07/1994 | EP0614162A2 Voice storage communication system |
09/07/1994 | EP0614160A1 Portable voice module |
09/07/1994 | CN2176621Y Automatic disinfecting handset of telephone |
09/07/1994 | CN1091873A A miniature wireless communication device |
09/06/1994 | US5345496 Remote line test facility |
09/06/1994 | US5345495 Data diagnostics with leds on the face of a telephone |
09/06/1994 | US5345258 A videophone having an automatic answering capability |
09/06/1994 | US5345226 Environmental control system for the handicapped |
09/02/1994 | CA2116279A1 Telephonic support receptacle and method therefor |
09/01/1994 | WO1994019896A1 Telelphone dialling code processor |
09/01/1994 | WO1994019895A1 Voice recognition dialing system |
09/01/1994 | WO1994019894A1 Voice transmission systems with voice cancellation |
09/01/1994 | DE4306200A1 Voice-controlled telephone device |
09/01/1994 | DE4306199A1 Portable speech module |
08/31/1994 | EP0613323A1 Piezoceramic capsule for telephone instruments |
08/31/1994 | EP0613314A2 Cellular telephone |
08/31/1994 | EP0613286A1 Communication apparatus utilizing a public line |
08/31/1994 | EP0613281A1 Private branch exchange |
08/31/1994 | EP0613277A1 Programmable signalling buttons |
08/31/1994 | EP0613275A1 Driver interface for a telephone line switch enabling a speech circuit under any polarity conditions |
08/31/1994 | EP0613092A1 Portable electronic device for orientation and communication |
08/31/1994 | CN2175992Y Voice-controlling telephone number automatic dialing device |
08/31/1994 | CN2175991Y Monitering alarm for telephone circuit fault and illegal bridging telephone |
08/31/1994 | CN2175990Y Short-wave telephone terminal machine without noice and crossfire |
08/31/1994 | CN2175989Y Single-face pressure-cliping branch box mould block for indoor use |
08/31/1994 | CN1091578A Telephone with storage of calling detail material and/or special service codes |
08/31/1994 | CN1091556A Radio Communication devices |
08/31/1994 | CN1025807C Three dimensional transmitted method |
08/30/1994 | US5343523 Telephone headset structure for reducing ambient noise |
08/30/1994 | US5343519 Autodialer with pin feature |
08/30/1994 | US5343516 Computer telecommunications signalling interface |
08/30/1994 | US5343514 Telephone line powered system |
08/30/1994 | US5343510 Wireless telephone |
08/30/1994 | US5343136 Charger for charging a rechargeable battery |
08/30/1994 | CA2024213C Telephone terminal device |
08/27/1994 | CA2116426A1 Telecommunications private branch exchange |
08/24/1994 | EP0612177A1 Circuit arrangement for the activation of apparatuses via a transmission line |
08/24/1994 | EP0612176A1 Antiseptic telephone set |
08/24/1994 | EP0572544A4 Integrated application controlled call processing and messaging system |
08/24/1994 | CN2175498Y Micro motion switch electricity conductive terminal |
08/23/1994 | US5341420 Noise-cancelling handset |
08/23/1994 | US5341418 ISDN terminal adapter for access from analog signal equipment of four-wire full duplex type to ISDN |
08/23/1994 | US5341415 Method and apparatus for sharing of common in-house wiring to permit multiple telephone carriers to serve the same customer |
08/23/1994 | US5341414 Calling number verification service |
08/23/1994 | US5341413 Communication equipment with a destination area on-line display function |
08/23/1994 | US5341411 Caller ID blocking method and processing system (block caller ID information) |
08/23/1994 | US5341370 Data transfer between high bit rate buses via unshielded low bit rate bus |
08/23/1994 | US5341293 User interface system having programmable user interface elements |
08/23/1994 | US5341167 Visual and sound communication system with remote control means |
08/23/1994 | CA2007537C Method and apparatus for controlling a telephone answering device |