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
Gain or input volume controller and method utilizing a...
Hazard prevention for telephone line interface circuits
High bandwidth phone line transceiver with capacitor isolation
High circuit density pots splitter assembly
High current protection circuit for telephone interface
High density telephone network interface unit
High density telephone network interface unit
High density telephone network interface unit
High-efficiency line driver
High-voltage protection circuitry in a data access arrangement