LandOfFree - US Patents - Listing for Telephonic communications,Subscriber line or transmission line interface

Telephonic communications – Subscriber line or transmission line interface – Hybrid circuit

Interface means

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

Interference canceling method and apparatus

Telephonic communications – Subscriber line or transmission line interface

Interrupt mechanism using TDM serial interface

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

IP telephone with power source circuit

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

ISDN power source detection circuit

Telephonic communications – Subscriber line or transmission line interface

ISDN terminal adapter for access from analog signal equipment of

Telephonic communications – Subscriber line or transmission line interface – Protective circuit

Isolating circuit for telephone apparatus

Telephonic communications – Subscriber line or transmission line interface

Isolation amplifier with hook switch control

Telephonic communications – Subscriber line or transmission line interface – Hybrid circuit

Isolation of transmit and receive signals

Telephonic communications – Subscriber line or transmission line interface – Hybrid circuit

Isolation of transmit and receive signals in full-duplex...

Telephonic communications – Subscriber line or transmission line interface

Isolation system with analog communication across an...