LandOfFree - US Patents - Listing for Telephonic communications

Telephonic communications – Echo cancellation or suppression – Disable or inhibit function

Band-by-band full duplex communication

Telephonic communications – Echo cancellation or suppression

Band-energy near-end echo reducer for tonal signalling detectors

Telephonic communications – Plural exchange network or interconnection – Interexchange signalling

Bandwidth allocation of DPNSS networks

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

Bandwidth reduction in a VoIP network using music on hold

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

Base band echo cancellation using laguerre echo estimation

Telephonic communications – Audio message storage – retrieval – or synthesis

Base station capable of monitoring occurrence of interference on

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

Base station for a radio communication system

Telephonic communications – Audio message storage – retrieval – or synthesis

Base storage of handset's base registrations

Telephonic communications – Audio message storage – retrieval – or synthesis

Baseband signal processing unit and method of operating the same

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery boosted dial memory

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Using portable test set

Battery charging and signalling interconnect arrangement for cra

Telephonic communications – Terminal accessory or auxiliary equipment – Support or stand

Battery charging for a plurality of different cellular telephone

Telephonic communications – Audio message storage – retrieval – or synthesis

Battery charging, reset, and data transfer system

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed circuit

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed circuit

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed circuit for a pair of subscriber lines

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed circuit for a telephone system

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed circuit for supplying feed current to telephone set

Telephonic communications – Subscriber line or transmission line interface – Network interface device

Battery feed for telephone line cards