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

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 subscriber loop or terminal

Active strapping and switching device for telephone line testing

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

Adapter for coupling together two subscribers' lines to a teleph

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

Adaptive expansion table in a digital telephone receiver

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

Adaptive wireless cell coverage

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

ADSL loop qualification systems and methods

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

Advanced intelligent network (AIN) functionality for electronic

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

Advanced intelligent network based computer architecture for con

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

Aircraft cabin telephony test unit

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

Alarm and test system for a digital added main line

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

Alarm and test system for a digital added main line

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

Alarm information transmission system for coin telephone

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

Alarm mechanism

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

Alarm notification system and method for a telephone switch

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

Alarm system backup

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

Alarm system tester

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

Alerting device for telephones

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

Analog self-test circuitry for a trunk interface

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

Analog/digital telephone test set