H04M 1 - Substation equipment, e.g. for use by subscribers

Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223)
01/1987
01/27/1987	CA1217261A1 Method and apparatus for sending a data message to a selected station during a silent interval between ringing
01/24/1987	CN86103937A 矿用无线电话 Mine wireless phone
01/24/1987	CN85101866A Telphone handset for a telephone set
01/20/1987	US4638126 Cradle switch for a telephone apparatus
01/20/1987	CA1216979A1 Base plate for telephone set base
01/20/1987	CA1216978A1 Telephone set
01/15/1987	WO1987000376A1 Telephone line access control
01/15/1987	DE3525018A1 Method for displaying the dialling operation on a telephone station
01/15/1987	DE3524523A1 Circuit for essentially equal-priority connection of at least two telephone terminals to a common line
01/15/1987	DE3524454A1 Circuit arrangement for connecting a plurality of telephone sets to a subscriber terminal of a telephone system
01/15/1987	DE3524014A1 Switching device for telephone terminals
01/14/1987	EP0208141A2 Waveform generators
01/14/1987	EP0208080A1 Personal alarm system providing handsfree operation
01/14/1987	EP0207942A1 Telephone aid
01/14/1987	CN85103519A Pulse/direct current multiplexing circuit in key telephone system
01/13/1987	US4636592 Speaker mounting for lined helmet
01/13/1987	US4636591 Integral transmitter and modular jack assembly for a telephone set
01/13/1987	US4636590 Method and apparatus for converting frequency signals representing characters to binary code
01/13/1987	US4636589 In-line telephone intercom system
01/13/1987	US4636585 Telephone installations
01/13/1987	US4635868 End of rewind detector for a telephone answering device
01/13/1987	CA1216689A1 Power line telephone extension system having transmitting coded signals between phones in the system, full duplex conferencing, call hold, multi- telephone extensions and intercom
01/08/1987	DE3524012A1 Arrangement on telephone handsets
01/08/1987	DE3522857A1 Circuit arrangement for a subscriber connection line
01/07/1987	CN86203111U Carrier wave telephone for railway coach
01/07/1987	CN85103345A Automatic telephone answering apparatus
01/06/1987	US4635255 Digital subscriber controller
01/06/1987	US4634960 Automatic linear compression circuit
01/06/1987	US4634816 Communications headset
01/06/1987	US4634814 Surge protected electronic switch for telephone voiceband circuits
01/06/1987	US4634813 Wire tap detection device
01/06/1987	US4634810 Station for the accommodation of a chargeable cordless telephone
01/02/1987	DE3522107A1 Method for alphabetical storage of speed-dialling addresses in telephone stations
12/1986
12/31/1986	WO1986007659A1 Telephone line interface circuitry for telecommunications equipment
12/31/1986	CN85205604U Magneto telephone line concentrator
12/30/1986	US4633044 Telephone handset comprising an adapter resiliently fixed for a transmitter or a receiver to a housing therefor
12/30/1986	US4633040 Personal branch exchange system
12/30/1986	EP0206391A2 Microcomputer controlled repertory dialer
12/30/1986	EP0206161A2 Automatic telephone line fault locator
12/24/1986	CN85103135A Circuit of telephone bell with electronic music
12/23/1986	US4631364 Communication system having dynamically assigned station set buttons
12/23/1986	US4631218 Upward projecting peripheral rim and slots on edge of rim; telephone apparatus
12/23/1986	CA1215796A1 Speakerphone linear comparator
12/17/1986	EP0205055A2 Channel selection in a multichannel access radio communication system without occurrence of interference
12/17/1986	CN86201443U Device for guarding against the user's calling for preset telephone number
12/16/1986	US4630257 Duplex speech transmission method and a system therefor
12/16/1986	US4629829 Full duplex speakerphone for radio and landline telephones
12/16/1986	US4629828 Signal transmission apparatus for steering operation board
12/16/1986	CA1215486A1 Current regulator pulse dialer with memory retention circuit
12/10/1986	EP0204409A2 Two piece modular receptacle and method of making same
12/10/1986	EP0204155A1 Modem with power-off ring detection
12/10/1986	CN86203765U Safe spark-type anti-noise electronic telephone set
12/10/1986	CN86201441U Automatic switching exchange for wired-and radio-telephone
12/09/1986	US4628152 Method and apparatus for transmission of telephone calls to a portable, wireless telephone set
12/09/1986	CA1215187A1 Handsfree circuit for telephone instrument
12/09/1986	CA1215163A1 Electro-acoustic calling devices
12/03/1986	EP0203882A2 Telephone, especially a car telephone
12/03/1986	EP0203819A2 Cordless telephone system
12/03/1986	EP0203680A2 Electrical device including a printed circuit
12/03/1986	EP0203476A1 Telephone set for table and wall operation
12/03/1986	EP0203394A2 Electronic music/voice ringer circuit for telephone
12/03/1986	EP0203132A1 Acoustic signal attenuator
12/03/1986	EP0203077A1 Rotatable electrical connector for coiled telephone cords
12/03/1986	EP0110888B1 A cordless telephone system
12/02/1986	US4626633 In-line switched telephone line tester
12/02/1986	US4626631 Dual line adapter for telephone answering machine
12/02/1986	US4626626 Interface for a telephone set
12/02/1986	US4626623 Method and apparatus for telephone access security
12/02/1986	CA1214890A1 Apparatus for detecting pick-up at a remote telephone set
11/1986
11/26/1986	EP0151168A4 Telephone trunk barring device.
11/25/1986	US4625274 Microprocessor reset system
11/25/1986	US4625080 Remote video recorder programming apparatus operating over telephone lines
11/25/1986	US4625079 Method and apparatus for activating through phone telecommand an announcer-recorder, and for selectively activating through the sending of codes consisting of signals at least another automatic call attention phone device
11/25/1986	CA1214529A1 Rotatable electrical connector for coiled telephone cords
11/20/1986	WO1986006915A1 Installation with portable, wireless telephone sets
11/19/1986	CN86101885A Speakerphone control circuit having low gain states and method for controlling gain of speakerphone
11/19/1986	CN85205848U User's terminal for single channel carrier wave equipment
11/19/1986	CN85109020A Full duplex speakerphone for radio and landline telephones
11/19/1986	CN85103954A Office line holding circuit with an automatic release function for direct connection telephone system
11/18/1986	US4623762 Static discharge snubber circuit for silicon controlled rectifier (SCR) type telephone hold devices
11/18/1986	US4623759 Telephone line voltage actuated switch
11/18/1986	US4623758 Hybrid system for recording voice and data signals
11/12/1986	CA1213992A Method and circuitry for encoding telephone ringing signals
11/11/1986	US4622695 Channel scan allocation arrangement
11/06/1986	WO1986006570A1 Single line telephone communication system
11/05/1986	EP0200209A2 Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
11/05/1986	EP0199831A1 Telephone answering apparatus with call recording
11/05/1986	CN85108662A Digital loudspeaking telepnone
11/05/1986	CN85103511A Active antinoise earmuff and microphone
10/1986
10/29/1986	EP0199627A1 Circuit for the suppression of the Larsen effect in the false call zone for a subscriber telephone set
10/28/1986	US4620070 Telephone line tester
10/28/1986	US4620067 Telephone wall caddy
10/28/1986	US4620065 Automatic telephone answering and recording apparatus
10/28/1986	US4620064 Pocket sized telephone line data communication systems
10/28/1986	US4620063 Ring signal detector
10/28/1986	CA1213349A1 Telephone hearing aid
10/22/1986	EP0198176A2 Method for informing a telephone subscriber of the existing states of his connection
10/21/1986	US4618917 Integral phone light accessory
10/21/1986	US4618742 Method and apparatus for decoding audiofrequency information sent through rotary dialing
10/21/1986	US4618207 Two piece modular receptacle

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