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

Device for inducing a wink in a telephone system

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

Device for measuring analog telephony signals

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Of hybrid or echo suppressor or canceller

Device for measuring echo return loss in a two-two wire line sys

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

Device for monitoring a switch

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

Device for providing dual monitoring of digital equipment

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

Device for remotely testing a twisted pair transmission line

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

Device for sequentially altering a communication line for remote

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

Device for testing telecommunication terminals, in particular mo

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

Diagnosing fault patterns in telecommunication networks

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

Diagnostic channel wakeup sequence for network managed fractiona

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... – Of data transmission

Diagnostic device for a telephone system

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

Diagnostic device for troubleshooting remote digital feature pho

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

Diagnostic mechanism for monitoring operational status of remote

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

Dial line monitor and control unit

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

Digital and synthesized speech alarm system

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

Digital bypass for telephone system

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

Digital exchange system with function of displaying operation st

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

Digital facility simulator with CODEC emulation