Facsimile apparatus

Fault protection for integrated subscriber line interface circui

Feed arrangement for a subscriber loop with multi-level...

Feeder circuit

Filter arrangement and method for telecommunication device

Filter arrangement for shaping a pulse propagated over POTS...

Filter system and method to suppress interference imposed...

Filters for a digital subscriber line system for voice communica

Flash-cut of speech processing features in a telephone call

Flexible data outlet

Flexible tributary unit protection method for a...

Floating digital loop carrier telephone interface

Frequency offset estimator for data modem

Frequency sensitive inductance device in POTS splitter design

Full-duplex speakerphone circuit including a control interface

Function for controlling line powered network element