LandOfFree - US Patents - Listing for Telephonic communications,Substation or terminal circuitry

Telephonic communications – Substation or terminal circuitry – Sidetone control or hybrid circuit

System and method for adapting an analog echo canceller in a...

Telephonic communications – Substation or terminal circuitry – Visual signalling

System and method for cleaning the display screen of a touch scr

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

System and method for controlling a filter to enhance...

Telephonic communications – Substation or terminal circuitry – Wire distribution

System and method for distributing enhanced telephony...

Telephonic communications – Substation or terminal circuitry

System and method for generating a simultaneous mixed audio...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

System and method for low-power echo and NEXT cancellers

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

System and method for providing user feedback to couple an elect

Telephonic communications – Substation or terminal circuitry – Hold circuit

System and method to provide control of music on hold to the...

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

System for the processing of audio data used for music on...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Systems and arrangements for controlling modes of audio...

Telephonic communications – Substation or terminal circuitry – Noise suppression

Systems and methods for reducing noise in ADSL transmissions

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Technique for compensating for signal attenuation on a telephone

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Techniques for improving telephone audio quality

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Telecommunication device

Telephonic communications – Substation or terminal circuitry

Telecommunication line driver having synthesized output...

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Telecommunications end station with electrically controlled term

Telephonic communications – Substation or terminal circuitry – Wire distribution

Telecommunications network interface assembly

Telephonic communications – Substation or terminal circuitry – Conversion of signal form

Telecommunications off-hook and intrusion detection method...

Telephonic communications – Substation or terminal circuitry – Impedance matching or line equalizing

Telecommunications terminal card