L3188I:CELL_FCTRL_LEV_DOWN
The cell flow control is performed through a double-timer mechanism. If a triggering event occurs when timer T1 is running, the triggering event is ignored. If timer T1 is not running when a triggering event occurs, the flow control level increases by one unless it reaches the highest level. At the same time, timers T1 and T2 (T2 > T1) are started. If timer T2 expires, the flow control level decreases by one. If the flow control level is not zero after the decrease, then timer T2 is restarted.
This measurement provides the number of times that the timer T2 expires.
Integer number or integer.
This counter is incremented by one when the timer T2 expires during the cell flow control.
This is an original counter without involving any formula.