LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication

Detection of carrier mis-routing in telephone systems

Telephonic communications – With usage measurement – Call traffic recording by computer or control processor

Detection of common information elements in PSTN call...

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

Detection of deviations in monitored patterns

Telephonic communications – Centralized switching system – With generating of call associated substation signal

Detection of ground or loop start configuration in telephone loo

Telephonic communications – Subscriber line or transmission line interface – Power supply

Detection of low tip/ring currents in a line powered DAA

Telephonic communications – Supervisory or control line signaling – Signal receiver

Detection of multifrequency tone signals

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Detection of TDD signals in an automated telephone system

Telephonic communications – With check operated control – Fraud or interference prevention

Detection of telephone number spoofing

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

Detection of the speech activity of a source

Telephonic communications – Audio message storage – retrieval – or synthesis

Detector for use with an automatic disconnect feature in a telep

Telephonic communications – Terminal – Housing or housing component

Detent assembly for housing cover

Telephonic communications – Emergency or alarm communications

Determining a local emergency dial-string

Telephonic communications – Telephone line or system combined with diverse electrical... – Having transmission of a digital message signal over a...

Determining and disclosing the indentity of telephone caller

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

Determining echo return loss in echo cancelling arrangements

Telephonic communications – Centralized switching system – Call distribution to operator

Determining expected call waiting time in a call center queue

Telephonic communications – Centralized switching system – Call distribution to operator

Determining statistics about the behavior of a call center...

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

Determining the composition of physical structures from...

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

Determining the composition of subscriber loops from...

Telephonic communications – Emergency or alarm communications – Central office responsive to emergency call or alarm

Determining the geographical location from which an...