LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Centralized switching system – Call distribution to operator

“Pull” architecture contact center

Telephonic communications – Special services – Service profile

“Roaming” method and apparatus for use in...

Telephonic communications – Subscriber line or transmission line interface

2-wire/3-wire converting apparatus

Telephonic communications – Call signal generating

20 Hz ring generator using high frequency PWM control

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

2nd level power fault testing apparatus for testing...

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

2nd level power fault testing apparatus for testing...

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

3-Way call detection system

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

3-way call detection system and method

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

3-Way call detection system and method

Telephonic communications – Audio message storage – retrieval – or synthesis – Display of message related information

3D view of incoming communications

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

5 volts single power supply ADSL analog front end design

Telephonic communications – Special services – Anonymous party

800 number callback

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

9-1-1 Switched access system

Telephonic communications – Emergency or alarm communications – Central station with plural substations

911 emergency voice/data telecommunication network

Telephonic communications – Emergency or alarm communications

911 status system and method

Telephonic communications – Terminal – Housing or housing component

AA battery cellular phone

Telephonic communications – Special services – Anonymous party

Abandoned call control and indication

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network

Abbreviated and enhanced dialing apparatus and methods particula

Telephonic communications – Supervisory or control line signaling – Substation originated

Abbreviated and enhanced dialing apparatus and methods particula