LandOfFree - US Patents - Listing for Telephonic communications,Diagnostic testing, malfunction indication, or electrical...,Of trunk or long line

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

Design and architecture of an impairment diagnosis system...

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

Detecting make-break clicks on a telephone line

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

Detection of bridge taps by frequency domain...

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

Detection of bridged taps by frequency domain reflectometry

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

Determining the composition of subscriber loops from...

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

Digital facility simulator with CODEC emulation

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

Digital key telephone system and extension terminal device...

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

Digital kick meter and graphical user interface (GUI)

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

Digital telephone link margin verification

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

Direct access test unit for central office

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

Display panel overlay structure and method for tracing...

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

Electronic looping systems for telecommunications system...

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

Electronic private branch exchange

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

Extrapolation of location and amplitude of noise sources on...

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

Facility type determination technique

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

Fault detection in broadband cable systems

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

Four pair cable test set

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

Hand-held telecommunication loop testing device