Nortel DMS-100 Series Maintenance Manual page 118

2-42 Functional overview
Figure 15 Summary of real-time overload symptoms
The XLCM maintains data about overload that allows the XLCM to provide a
summary about the overload period. The figure above describes this summary.
This summary appends to the overload exit message of the CM. When the CM
is at CCM04 or later, this information appears in a modified PM180 LCM out
of Overload log.
This feature is active in XLCMs, and in International XLCMs with extended
memory and XPM04 or later loads. The new logs apply when CCM04 is
installed in the CM.
This feature detects real-time overload. The overload status can be reported to
the CM. When the CM receives the overload state report, real-time can be
preserved. The preservation of real-time allows the XLCM to function
according to the operating model, memory block limited.
The real-time Overload Detection and Protection subsystem is integrated into
the current Memory Block Overload System. When the system detects
real-time trouble, the system begins memory block reduction. The system
297-8361-550 Standard 04.02 December 2004
RT OVLD: LOW (2/9, 55)
( Expanded to binary )
7 6 4
5
0 1 0 1
A rating from 0 to 3 to show how much of the overload
was observable in the timer task slips.
A rating from 0 to 3 to show how much of the overload was
observable by size of the set message queue.
3 2 1 0
BITS
0 1 0 1
If 1, a maintenance request was
slow to complete.
If 1, a maintenance request did not
complete within a maximum allowable
time.
A rating from 0 to 3 to show how much of the
overload was observable in the idler.