| Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223) |
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| 06/08/1994 | EP0599931A1 Off-hook telephone with temporary park feature. |
| 06/08/1994 | CN2168369Y Telephone mechanical bell with micro-regulating and sound-silencing device |
| 06/08/1994 | CN2168368Y Sound-effect regulating device for simple telephone mechanical bell |
| 06/08/1994 | CN2168367Y Charging socket for cell of composite-type telephone |
| 06/07/1994 | US5319799 Signal oscillation method for time-division duplex radio transceiver and apparatus using the same |
| 06/07/1994 | US5319704 Control circuit for voltage controlled attenuator for speakerphones |
| 06/07/1994 | US5319702 Method and apparatus for detecting and responding to hook flash events occurring on a remote telephone |
| 06/07/1994 | US5319701 Method and apparatus for performing an automated collect call |
| 06/07/1994 | US5319640 Transmitting/receiving system having digital switching network |
| 06/07/1994 | US5319634 Multiple access telephone extension systems and methods |
| 06/07/1994 | US5319573 Method and apparatus for noise burst detection in a signal processor |
| 06/07/1994 | US5317785 Hinge mechanism for foldable electronic apparatus |
| 06/07/1994 | CA2023357C Dial number generator |
| 06/01/1994 | EP0599244A2 Portable electronic device |
| 06/01/1994 | EP0599133A2 Digital telephonic interface between a mobile telephone and a public terminal |
| 06/01/1994 | EP0599130A2 Alphanumeric display for a telephone set |
| 06/01/1994 | DE4239943A1 Telephone for people hard of hearing - has externally powered amplifier for speech signal and frequency controllable bell |
| 06/01/1994 | DE4239416A1 Communication terminal handset cord replacement system - uses full duplex radio transmission line and has terminal with base station and independent unit |
| 06/01/1994 | CN2167488Y Extension type telephone with intercalling and locking |
| 06/01/1994 | CN2167487Y Telephone connection device for recording message |
| 06/01/1994 | CN2167486Y All-direction supporting device for moveable telephone set |
| 05/31/1994 | US5317634 Telephone subset arrangement |
| 05/31/1994 | US5317632 Timed telephone silencer. (telephone silencer with timer function) |
| 05/31/1994 | US5317629 Data communication apparatus connectable with a plurality of telephone sets and a telephone line |
| 05/31/1994 | US5317626 Wake-up and reminder system for a telephone |
| 05/31/1994 | US5317624 Cordless automatic answering telephone set |
| 05/31/1994 | US5317622 Ringing circuit for use in a telephone set for detecting a mobile mode or a portable mode of the telephone set |
| 05/31/1994 | US5317522 Method and apparatus for noise burst detection in a signal processor |
| 05/31/1994 | US5317474 Module for telephone line conductor pair having single protector unit |
| 05/31/1994 | US5317247 Integrated battery contact and retentive protrusion |
| 05/31/1994 | US5316168 Door cover assembly |
| 05/31/1994 | CA2018836C Training method for an echo canceller for use in a voice conference system |
| 05/31/1994 | CA2002202C Portable communication device |
| 05/26/1994 | WO1994011986A1 Portable message transmission apparatus |
| 05/26/1994 | WO1994011980A1 Portable communicator |
| 05/26/1994 | WO1994011979A1 Tone ringing transducer fitted inside a communications terminal |
| 05/26/1994 | DE4310602C1 Fixing clip for portable communications device - is spring-biased into stowed position fitting within recess in housing of communications device, e.g. telephone handset |
| 05/25/1994 | EP0598138A1 User selectable response to alert transmitted from cellular telephone base station |
| 05/25/1994 | EP0598081A1 Method for channel utilization in extended spectrum communication systems |
| 05/25/1994 | CN2166562Y Shunt interlocking device for telephone |
| 05/24/1994 | US5315705 Communication address management system |
| 05/24/1994 | US5315654 Armored telephone line protective system |
| 05/24/1994 | US5315651 Active surge rejection circuit |
| 05/24/1994 | US5315650 Caller identification transmit path limiter |
| 05/24/1994 | US5315648 Retainer member for anchoring a telephone handset to a telephone housing |
| 05/24/1994 | US5315645 Communication apparatus utilizing digital optical signals |
| 05/24/1994 | US5315643 Communication system and data communication method |
| 05/24/1994 | US5315640 Data transfer device |
| 05/24/1994 | US5315639 Hands-free intercom system |
| 05/24/1994 | CA2011259C Telephone communication apparatus and method |
| 05/18/1994 | EP0597774A1 Door telephone |
| 05/18/1994 | EP0597201A1 Apparatus and method for noise reduction for a full-duplex speakerphone or the like |
| 05/18/1994 | CN2165583Y Communication circuit controlling device for all intercall and other telephones |
| 05/18/1994 | CN2165582Y Automatic message-recording controller for telephone |
| 05/18/1994 | CN2165581Y Voice direct-give telephone arrangement |
| 05/18/1994 | CN2165580Y Moistureproof telephone for bathroom |
| 05/18/1994 | CN1086946A Mini telephone receiver with microphone and earphone using ear as support |
| 05/17/1994 | US5313661 Method and circuit arrangement for adjusting the volume in a mobile telephone |
| 05/17/1994 | US5313523 Sound volume controlling apparatus |
| 05/17/1994 | US5313516 Telephone answering device with automatic function |
| 05/17/1994 | US5313514 Hands free apparatus for land mobile radio telephone |
| 05/17/1994 | US5313053 Laser scanner module having integral interfacing with hand-held data capture terminal |
| 05/17/1994 | US5311656 Keypad method of manufacture |
| 05/11/1994 | WO1994010812A1 Arrangement for controlling a transmitter-receiver pair, in particular base stations and mobile units of a cordless telephone system |
| 05/11/1994 | WO1994010811A1 Time slot selection for a radio connection, particularly in a cordless telecommunications system |
| 05/11/1994 | WO1994010789A1 Apparatus and method for controlling an echo canceler |
| 05/11/1994 | WO1994010788A1 Method of synchronizing leds between a digital telephone and remote options |
| 05/11/1994 | WO1994010787A1 Arrangement for controlling the channel search of a transmitter-receiver pair |
| 05/11/1994 | WO1994010786A1 Process for programming a base station using a mobile unit |
| 05/11/1994 | WO1994010785A1 Process for combining transmitter-receiver pairs of a cordless communications system to form a communicating unit |
| 05/11/1994 | WO1994010784A1 Process for managing a multitude of mobile stations that are registered in a base station in a cordless communications system |
| 05/11/1994 | WO1994010783A1 Cordless telecommunication apparatus |
| 05/11/1994 | WO1994010781A1 Display telephones with automatic repertory dialler control system |
| 05/11/1994 | WO1994010759A1 Switchable attenuation device |
| 05/11/1994 | EP0596710A2 Improvements relating to maintenance termination units |
| 05/11/1994 | EP0596623A2 Electronic cancellation of ambient noise in telephone receivers |
| 05/11/1994 | EP0596171A1 Integrated circuit voice recorder with endless loop |
| 05/11/1994 | EP0596158A1 Digital telephone set with a plurality of interconnected circuit modules |
| 05/11/1994 | EP0596079A1 Telecommunication device operating under an enhanced tdd protocol |
| 05/11/1994 | DE4237396A1 Controlling two interconnected appts. parts of communications transmitter - using transmission module and I=O module in each appts. part for repeated signal exchange |
| 05/11/1994 | CN2164619Y Recorder for telephone |
| 05/11/1994 | CN2164618Y Sterilizing deodorisation cover for telephone receiver |
| 05/11/1994 | CN2164617Y Automatic assembly machine for installation gold wire on telephone socket |
| 05/11/1994 | CA2147973A1 Switchable attenuation device |
| 05/10/1994 | US5311588 Call progress detection circuitry and method |
| 05/10/1994 | US5311587 Sensor circuit for telephone line |
| 05/10/1994 | US5311575 Telephone signal classification and phone message delivery method and system |
| 05/10/1994 | US5311573 Facsimile apparatus |
| 05/10/1994 | US5311175 Method and apparatus for pre-identification of keys and switches |
| 05/05/1994 | DE4236778A1 Verfahren zum Zusammenschluß von Sende-/Empfangseinrichtungen eines Schnurlos-Kommunikationssystems zu einer kommunikationsfähigen Einheit A method for concentration of transmitting / receiving devices of a cordless communication system to a communication-enabled unit |
| 05/05/1994 | DE4236777A1 Verfahren zur Verwaltung von mehreren, in einer Basisstation registrierten Mobilstationen eines Schnurlos-Kommunikationssystems Process for managing a number of registered mobile stations in a base station of a cordless communication system |
| 05/05/1994 | DE4236774A1 Schnurlos-Telekommunikationsgerät Cordless Telecommunications Equipment |
| 05/05/1994 | DE4236744A1 Electrical blocking device for telephone subscriber's appts. - has polarity reversing component allowing outgoing call connections to be blocked electrically while still allowing incoming call connections |
| 05/05/1994 | DE4236408A1 Schaltbare Dämpfungsvorrichtung Switchable attenuation device |
| 05/05/1994 | DE4236176A1 Image call-up answering device for paperless central archives - stores and plays back image and speed information on VTR, and has LCD display on ISDN telephone to indicate programme menu |
| 05/05/1994 | DE4235453A1 Verfahren zur Signalklassifizierung bei FDM-Funkübertragungssystemen Method for signal classification in FDM radio transmission systems |
| 05/04/1994 | EP0595534A2 Compact loudspeaker assembly for telephone set |
| 05/04/1994 | EP0595514A2 Piezoelectric transducer |
| 05/04/1994 | EP0595483A1 Methods and apparatus for automatic switching between transmission of a spectrally redundant outgoing signal and reception of an incoming signal |
| 05/04/1994 | EP0595457A1 Noise cancellation apparatus |