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

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

Variable DC feed characteristic in a subscriber line interface c

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

VDSL splitter

Telephonic communications – Subscriber line or transmission line interface

Video voice separation system

Telephonic communications – Subscriber line or transmission line interface

Voice and data communications

Telephonic communications – Subscriber line or transmission line interface

Voice communication link interface apparatus

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

Voice conference system using echo cancellers

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

Voice notification for a battery alarm in a network...

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

Voltage alternating switch circuit

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

Voltage and protection arrangement for a telephone...

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

Voltage reference filter for subscriber line interface circuit

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

Voltage regulator control circuit for a subscriber line interfac