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

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

Nonintrusive speech level and dynamic noise measurements

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

Off-hook signal and dial pulse generating circuit and a method f

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

OmniTester

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

Open power loop detector for transmission line elements

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

Operational test device and method of performing an operational

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

Operations monitoring system

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

Optical transport concentrator audit system and method

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

Order wire device having function for reducing noise in communic

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

Order wire in telephone communication system

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

Outage reporting for a telecommunications system

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

Pair gain test unit for use in a combined telephony/video co-axi

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

Parallel-connected dialing signal transmission inhibiting...

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

Parallel-connected dialing signal transmission-inhibiting device

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

Pay telephone monitoring system

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

Payphone having master and slave modes

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

Perfected protection and cutting unit by rotational control devi

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

Performance monitoring of DS0 channel via D4 channel bank

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

Performance monitoring of DSO channel via D4 channel bank

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

Performance monitoring system for T1 telephone lines