Adaptive transmission line impedance matching device and method
Automatic balancing circuit for longitudinal transmission system
Balanced transmission device
Circuit for electronically generating a call impedance
Communication interface having combined shaping of receive...
Compatibility circuit for telephone headset
Data signal attenuator and systems and methods for using same
Generic line impedance matching circuit using decomposed...
High performance telephone instrument with combination pulse and
Impedance blocking filter circuit for digital subscriber...
Impedance compensation in interfacing a modem to a telephone...
Interface for a telephone set
Low-pass filtering device with integrated insulator and...
Method for automatically adapting levels of signals...
Office line interface circuits
Programmable plain old telephone line impedance matching...
Regulator for impedance balance of a transmission wire pair
Signal line driving circuit with self-controlled power...
Speech circuit for subscriber telephone apparatus
Subscriber line interface circuit having an impedence synthesize