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

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

Telephone toll integrity checking system

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

Telephone trouble isolator

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

Telephone trunk line testing circuitry

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

Telephonic apparatus and input device for telephonic apparatus

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

Telephony based remote location monitoring

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

Telephony based remote location monitoring

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

Telephony interface device for providing diagnostic...

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

Telephony line test unit and method

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

Telephony test system with adjustable output impedance

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

Telephony Test Technique

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

Telephony testing system

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

Telephony testing system

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

Terminal device for subscriber telephone interconnection

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

Terminating call control method and system therefor in a digital

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

Termination circuit for network interface unit

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

Termination unit with maintenance facility

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

Test access and performance monitoring system and method for...

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

Test adapter tools for telephone cutover system

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

Test apparatus for a subscriber line