LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Centralized switching system – Call distribution to operator

Implementation of call-center outbound dialing capability at a t

Telephonic communications – With usage measurement – Call charge metering or monitoring

Implementation of charging in a telecommunications system

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

Implementing an emergency services solution

Telephonic communications – Audio message storage – retrieval – or synthesis – Voice activation or recognition

Implicit area code determination during voice activated dialing

Telephonic communications – Special services – Call diversion

Implied principal busy status indicator for covered calls

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Improved data transmission via a public switched telephone netwo

Telephonic communications – Private or single line system – With paging

Improved page party system

Telephonic communications – Echo cancellation or suppression – Using digital signal processing

Impulse response setting method for the 2-channel echo...

Telephonic communications – Centralized switching system – Switching controlled in response to called station...

Impulse signal convertor

Telephonic communications – With usage measurement – Call charge metering or monitoring

IMS gateway systems and methods for online charging in IMS...

Telephonic communications – Special services – Service trigger

IMS subscriber access control

Telephonic communications – Plural exchange network or interconnection – With interexchange network routing

In-band signaling for routing

Telephonic communications – Plural exchange network or interconnection

In-band signaling for routing

Telephonic communications – Special services

In-bound call directed telephone station and method of...

Telephonic communications – Special services

In-bound call directed telephone station and method of...

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

In-building radio deployment technique for wireless personal com

Telephonic communications – Telephone line or system combined with diverse electrical... – To produce visual-graphic copy

In-house communication system for transmitting and receiving bot

Telephonic communications – Telephone line or system combined with diverse electrical... – Remote control

In-line control of telephony device

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

In-line switched telephone line tester