LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Digital longitudinal balance measurement

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

Digital loop carrier module for proactive maintenance...

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing

Digital loop carrier system

Telephonic communications – Centralized switching system – Switching controlled in response to called station...

Digital loop carrier system with automatic reprovisioning of ded

Telephonic communications – Repeater

Digital loop carrier system with enhanced call handling and...

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Digital loudspeaking telephone

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of trunk or long line

Digital measurement of amplitude and phase of a sinusoidal signa

Telephonic communications – Terminal – Housing or housing component

Digital mobile phone with a plurality of switchable...

Telephonic communications – Supervisory or control line signaling – Signal receiver

Digital multifrequency signal receiver

Telephonic communications – Telephone line or system combined with diverse electrical...

Digital musicians telephone interface

Telephonic communications – Audio message storage – retrieval – or synthesis – Indication or notification of message

Digital notification and response system

Telephonic communications – Substation or terminal circuitry

Digital portable telephone set

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

Digital radio telephone

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

Digital radio telephone apparatus having automatic answering/rec

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

Digital radio transmission system

Telephonic communications – Audio message storage – retrieval – or synthesis

Digital radiotelephone apparatus

Telephonic communications – Terminal accessory or auxiliary equipment – Support or stand

Digital recorder reversible mount for a telephone

Telephonic communications – Terminal accessory or auxiliary equipment – Telephone receiver support

Digital recorder reversible mount for a telephone

Telephonic communications – Special services – Conferencing

Digital recording of IP based distributed switching platform