remote failure indication. A SONET port status indicator that activates when an line remote failure indication (LRFI) defect occurs and does not clear throughout the alarm integration period, which is typically 2.5 seconds. An LRFI defect occurs when bits 6, 7, and 8 of the byte are 110 for three consecutive frames. This occurrence begins the alarm integration period. If this period elapses without the detection of three consecutive frames in which bits 6, 7, and 8 show any pattern other than 110, the LRFI indicator activates. The LRFI indicator clears when a line alarm indication signal defect does not occur for a time interval equal to the alarm deactivation period (typically10 seconds).