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

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

Public telephone set

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

Qualifying a telephone line for digital transmission service

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

Qualifying telephone line for digital transmission service

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

Qualifying telephone line for digital transmission service

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

Qualifying telephone lines for data transmission

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

Qualifying telephone lines for data transmission

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – For detection of eavesdropping device

Radio telecommunication network and method for unobtrusive call

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

Radio telephone base station with a monitoring apparatus

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

Rate adaptaptive subscriber line ("RADSL") modem and method of o

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

Real time call trace capable of use with multiple elements

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

Recording verification system

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

Reduced cost digital subscriber line (DSL) interface...

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

Reducing crosstalk between communications systems

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

Redundant alarm monitoring system

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

Redundant video alarm monitoring system

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

Release cause table for failed calls in SS7/ISDN Networks

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

Reliable, unattended, automated testing system and method...

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

Remote access for cable locator system

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

Remote access terminal