Sverrir Olafsson

Method and apparatus for training linear equalizers in a PCM modem

LINE PROBE SIGNAL AND METHOD OF USE

Timing recovery for a high speed digital data communication system based on adaptive equalizer impulse response characteristics

Method and apparatus for training an echo canceler in a PCM modem context

Methods and apparatus for verifying transmit power levels in a signal point limited transmission system

Signaling mechanism for modem connection holding and reconnecting

Method and apparatus for canceling periodic interference signals in a digital data communication system

Control channel for modems

Method and apparatus for generating a line impairment learning signal for a data communication system

Quick connect parameter exchange