Diagnostic technique for determining fault locations within a digital transmission system

摘要: An in-service line monitoring technique to detect and isolate marginal failed digital transmission equipment within a telecommunication system having at least two end terminals. At selected terminal repeater locations, error detector monitors the bit rate for each location. The detected BER is truncated include most significant digit exponent of BER. stored then encoded back command center usually located an terminal. one displayed upon request. By being able monitor any location or direction, maintenance personnel are determine when link in beginning deteriorate well before complete path failure occurs.