LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Transmission system for telephone communications or data transfe

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Including fault responsive disconnection of tested component

Transmission system having stand-by line switching facility

Telephonic communications – Supervisory or control line signaling – Signal receiver

Transmission system with improved tone detection

Telephonic communications – Supervisory or control line signaling – Signal receiver

Transmission system with improved tone detection

Telephonic communications – Supervisory or control line signaling

Transmission system with improved tone detection

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network

Transmission trunk multichannel dispatch system with priority qu

Telephonic communications – Audio message storage – retrieval – or synthesis

Transmission trunked radio system with voice buffering and off-l

Telephonic communications – Substation or terminal circuitry – Amplifying

Transmit by-pass cable

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – With blocking of normal usage

Transmit power control for DSL modems in splitterless...

Telephonic communications – Transmission line conditioning – Interference suppression

Transmit power scaling for far-end crosstalk reduction

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Transmit/receive arbitrator

Telephonic communications – With check operated control – Other than coin

Transmitter for accessing pay-type telephones

Telephonic communications – Terminal – Housing or housing component

Transmitter for communication equipment

Telephonic communications – Terminal – Housing or housing component

Transmitter/receiver comprising bone-conduction speaker

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Transmitting message playback concurrent with speakerphone...

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy

Transmitting method in facsimile

Telephonic communications – Special services – Reserved call

Transparent call discrimination (TCD) method and apparatus

Telephonic communications – Special services – Reserved call

Transparent caller interactive attendant bypass system

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Transparent inband signaling