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

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

Loop test apparatus and method

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

Loop-back test system using a suppressed ringing connection

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

Low power control apparatus for a coin operated telephone

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

Maintenance operations console for an advanced intelligent netwo

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

Maintenance operations console for an advanced intelligent netwo

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Using portable test set

Maintenance terminal of a validation and identification unit

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

Maintenance termination unit

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

Maintenance termination unit

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

Maintenance termination unit

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of network terminating interface – subscriber trunk...

Maintenance termination units

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Using portable test set

Maintenance unit for modular public telephone

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Monitoring

Master-slave microprocessor control circuit

Telephonic communications – Diagnostic testing – malfunction indication – or electrical...

Measurement deferral and aggregation for extensible test...

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of data transmission

Measurement device for communication

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

Measurement of signal quality

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

Measurement of transmission quality of a telephone channel

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

Mechanism for controllably enabling test set to assert off-hook

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

Mechanism for controlling operation of telephone metallic loop m

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of centralized switching system

Media gateway bulk configuration provisioning