Echo signal reduction-correction procedure for telecommunication network, involves detecting quality values of each terminal based on which countermeasures for echo reduction is estimated

摘要

The signal sensor is assigned to communication terminals, for detecting properties based on echo signals. The quality values are estimated based on the output of sensor. The countermeasures required for reducing echo signals to a previously specified value, are estimated based on the quality values. The echo signals in specific switching equipment is minimized based on the countermeasures.