ring error monitor(REM)

A function that collects ring error data from ring stations. The ring error monitor may log the received errors, or analyze this data and record statistics on the errors.; 收集環形網絡站環形差錯數據的一種操作程序。環形網絡差錯監控程序可記錄收到的差 錯，或分析這類數據并記錄差錯的統計值。