Method and apparatus for an active impedance feedback

Method and apparatus for an improved analog echo canceller

Method and apparatus for handling voice and data signals

Method and apparatus for impedance matching

Method and apparatus for providing variable attenuation to...

Method and apparatus for transient suppression in an...

Method and circuit for adapting the impedance of an analog...

Method and circuit for implementing an impedance, in particular

Method and configuration for forming a line termination of a tel

Method for matching an adaptive hybrid to a line

Method for selecting impedance setting for loop start trunk...

Method of selecting impedance setting for loop start trunk line

Method, device and system for output impedance calibration...

Methods and apparatus for providing reciprocal impedance convers

Methods and apparatus for providing reciprocal impedance convers

Modular attenuator

Multiplexing and demultiplexing of narrowband and broadband...