LandOfFree - US Patents - Listing for Telephonic communications,Diagnostic testing, malfunction indication, or electrical...,Testing of network terminating interface, subscriber trunk...

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

2nd level power fault testing apparatus for testing...

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

Apparatus and method for characterizing the loading pattern...

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

Apparatus and method for multiplexing communication signals

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

Apparatus for monitoring telecommunication transmission

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

Automatic bypass switch for signal conductor

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

Automatic line defect detector

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

Circuit for detecting abnormality in feeder

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

Diagnostic checking of an inter-messaging network

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

Electronic trigger switch for maintenance termination unit

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

Electronic trigger switch for maintenance termination unit

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

Graphic user interface method and apparatus for testing a...

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

Ground fault detector for T1 span equipment

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

Inter-circuit line fault location in telecommunication networks

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

Interface device for testing a telecommunication circuit

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

Interface device for testing a telecommunication circuit

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

Line sharing multipoint pots splitter controllable line...

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... – Testing of network terminating interface – subscriber trunk...

Method and apparatus for fault segmentation in a telephone netwo

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

Method and apparatus for fault segmentation in a telephone netwo