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

Patents for H04M 1 - Substation equipment, e.g. for use by subscribers (168,223)
10/1988
10/11/1988	US4777644 Method and apparatus for testing telephone coin relays
10/11/1988	US4777469 Public terminal receptacle
10/11/1988	US4776553 Telephone cradle mount
10/11/1988	US4776120 Dial illuminator
10/06/1988	WO1988007797A1 Telephone call monitoring, metering and selection device
10/06/1988	WO1988007795A1 Mobile telephone
10/06/1988	DE3709539A1 Circuit arrangement for a telephone station with an earth connection
10/05/1988	CN87209418U Separating calling same line music magnetic stone telephone
10/04/1988	US4776009 Telephone handset having housings assembled without mechanical fasteners
10/04/1988	US4776008 Key-in sound-generating circuit
10/04/1988	US4776006 Multiplexed data channel controlled telephone system
10/04/1988	US4776005 Computer based information system for character display phone network
10/04/1988	US4776002 Method for prompting at a digital telephone station
10/04/1988	US4776001 Radio telephone system control apparatus and method
10/04/1988	US4776000 Telephone communications system with portable handsets
10/04/1988	US4775996 For providing wireless communications
09/1988
09/29/1988	DE3808055A1 Mikrofonhalterung Microphone holder
09/29/1988	DE3708667A1 Circuit arrangement for a telephone station with an answering machine
09/28/1988	EP0284401A2 Telephone equipment with multiple function
09/28/1988	EP0284325A2 Radio telephone
09/28/1988	EP0284324A2 Radio telephones
09/28/1988	EP0283853A2 A telephone system on a vehicle
09/28/1988	EP0283812A2 Cradle for a coin telephone
09/28/1988	EP0283645A2 Cordless telephone
09/28/1988	CN87216645U Branch suitable for telephone mounting in short range
09/27/1988	US4774722 Telephone line activity monitoring method and device
09/22/1988	DE3707894A1 Hand-held unit for testing telecommunications line systems
09/22/1988	DE3707771A1 Telephone receiver
09/21/1988	EP0282597A1 Wireless handset for a telephone set
09/20/1988	US4773091 Telephone handset for use in noisy locations
09/20/1988	US4773090 Sub-assembly for electrical apparatus and electrical apparatus including such a sub-assembly
09/20/1988	US4773088 Telephone amplifier with switchable gain control
09/15/1988	DE3707211A1 House interface point for cable television systems
09/14/1988	EP0282393A1 Device for the realization of the hands free function in a telephone set associated with the functions of gain switching and echo cancelling
09/14/1988	EP0282334A2 Loudspeaking telephone with a frequency shifting circuit
09/14/1988	EP0282158A2 Communication system
09/14/1988	EP0282087A2 Radio channel search system
09/14/1988	EP0281728A2 Telephone apparatus
09/14/1988	CN88100532A Volume control circuit for use in portable telephone or the like
09/14/1988	CN87207489U Electronic internal line automatic telephone system
09/13/1988	US4771454 Ruggedized ear protector and communications headset
09/13/1988	US4771453 Telephone subscriber station comprising an actuating device which actuates a cradle switch
09/13/1988	US4771452 Telephone call duration control
09/13/1988	US4771450 Method and apparatus for converting rotary signals to audiofrequency signals
09/13/1988	CA1242040A1 Cordless telephone apparatus having means for synchronizing channel scanning of fixed and portable units
09/08/1988	DE3706739A1 Accommodating element for control assemblies
09/08/1988	DE3706406A1 Device for simulating telephone sets or ancillary devices operating according to the ISDN system
09/08/1988	DE3706381A1 Electrical circuit arrangement to prevent the occurrence of loop dial pulses on the line wires of a telephone connection
09/07/1988	WO1988006823A1 Internal communication system
09/07/1988	EP0281386A2 Branched telephone system
09/07/1988	CN88101520A Omnidirectional self-adapting array signal processor
09/06/1988	US4769837 Device for adding intercom functions to a phone system
09/06/1988	US4769836 Dialing tone generator employing low frequency oscillator
09/06/1988	US4769835 Method of and circuit arrangement for inserting dialling intervals between stored dialling digits
09/06/1988	CA1241784A1 Circuit for switching between balanced networks
09/06/1988	CA1241782A1 Mf signal transmitting control apparatus/method for use in cordless telephone system
09/01/1988	DE3705816A1 Selector device for a telephone unit for connecting a plurality of telephone stations to a common telephone line
09/01/1988	DE3705778A1 Terminal for a telecommunications switching system with a membrane potentiometer
09/01/1988	DE3705678A1 Telephone answering machine
09/01/1988	DE3705562A1 Telecommunication line unit
09/01/1988	DE3705554A1 Arrangement for communications terminals for users with impaired vision
09/01/1988	DE3705238A1 Terminal device with a movable slide which carries a keypad
08/1988
08/31/1988	EP0280381A1 Anti-Larsen effect gain control circuit in a telephone amplifier
08/31/1988	EP0280061A2 Hinged holder for a portable service apparatus
08/31/1988	CN88101334A Portable radio apparatus having battery saved channel scanning function
08/30/1988	US4768226 Lock for pushbutton phone
08/30/1988	US4768225 Telephone station set for table wall operations
08/30/1988	US4768220 Channel selection in a multichannel access radio communication system without occurrence of interference
08/30/1988	US4768219 Cordless telephone
08/30/1988	US4768218 Radio key telephone system having a common signaling channel
08/30/1988	US4768217 Public telephone set
08/30/1988	CA1241473A1 Two-module telephone terminal and modules for this terminal
08/30/1988	CA1241471A1 Apparatus for generating a multi-frequency signal
08/25/1988	WO1988006386A1 Telephone network coupler
08/25/1988	DE3712324C1 Monitoring circuit for an ancillary telephone device
08/25/1988	DE3704738A1 Terminal device with a slide which carries a keypad and which releases a further keypad or display device
08/24/1988	EP0279697A2 Portable radio apparatus having battery saving channel scanning function
08/24/1988	EP0279233A2 Keyboard for a mobile radio telephone
08/24/1988	EP0137806B1 Speakerphone control circuit
08/24/1988	CN87216071U Simple telephone
08/23/1988	US4766433 Optical card-key data connector
08/23/1988	US4765076 Advertising apparatus for telephone and information display apparatus
08/18/1988	DE3803488A1 Telephone system
08/18/1988	DE3703447A1 Selective switching mechanism for one for several telephones - has logic circuit responding to engaged-reset state of sets to open-close MOSFET gating circuitry
08/18/1988	DE3703430A1 Hand-piece for telephone receiver - has sound input holes only around outer edge of microphone to allow sector-type arrangement
08/17/1988	EP0278429A2 Circuit arrangement for a substation in telecommunication systems, especially in telephone systems
08/17/1988	CN87215934U Perfume telephone disinfector
08/16/1988	US4764966 Method and apparatus for voice detection having adaptive sensitivity
08/16/1988	US4764958 Telephone magnifier attachment
08/16/1988	US4764957 Earpiece, telephone handset and headphone intended to correct individual hearing deficiencies
08/16/1988	US4764954 Automatic gain control in a loudspeaker telephone set
08/16/1988	US4764951 Auto dialer for use with telecopiers or the like
08/16/1988	US4764950 Snap-on network interface unit
08/11/1988	DE3702509A1 Method for a mobile electronic ancillary dialling device on telephone stations
08/09/1988	US4763356 Touch screen form entry system
08/09/1988	US4763355 Combined writing and signaling instrument
08/09/1988	US4763354 Key telephone system
08/09/1988	US4763352 Secure holder for a desk top coin operated telephone
08/09/1988	CA1240430A1 Telephone apparatus with a fixed telephone station coupled to a mobile and detachable handset
08/03/1988	EP0277031A2 Volume control circuit for use in portable telephone or the like

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