LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Supervisory or control line signaling – Substation originated

Adjustable-period dual-tone multifrequency generator

Telephonic communications – Special services – Call waiting

Adjusting music length to expected waiting time while caller...

Telephonic communications – Centralized switching system – Call distribution to operator

Adjustment of call selection to achieve target values for...

Telephonic communications – Centralized switching system – Call distribution to operator

Administering multiple target ACD systems

Telephonic communications – Centralized switching system – Call distribution to operator

Administration and control of an automatic call distributor...

Telephonic communications – Audio message storage – retrieval – or synthesis – Interacting voice message systems

Administration tool for supporting information technology...

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

Administrative control and security of modems

Telephonic communications – With check operated control – Other than coin

Administrative monitoring system for calling card fraud preventi

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

ADSI web browser for retrieving internet data files

Telephonic communications – Echo cancellation or suppression

ADSL communication system having echo canceller and method...

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

ADSL filter

Telephonic communications – Subscriber line or transmission line interface – For line length compensation

ADSL front-end in a low voltage process that accommodates...

Telephonic communications – Subscriber line or transmission line interface

ADSL integrated line card with digital splitter and POTS CODEC w

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

ADSL loop qualification systems and methods

Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal

ADSL receiver high pass filter architecture

Telephonic communications – Audio message storage – retrieval – or synthesis – Interaction with an external nontelephone network

Advanced call screening appliance

Telephonic communications – Special services – Call diversion

Advanced call sequencing service

Telephonic communications – Audio message storage – retrieval – or synthesis – Multimedia system

Advanced call waiting and messaging system

Telephonic communications – Special services – Call waiting

Advanced call waiting processing