Nortel DMS-100 Series Application Manual page 390
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- Replacement procedures (1100 pages) ,
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- Manual (543 pages)
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9-2 How SPMS index values are calculated
The value R is converted into an index with the help of a curve defined by
five points. The curve consists of straight line segments joining these points.
The points are as follows in table 9-1 and the curve in figure 9-1.
Table
Index points
R value
0
R95
R80
2 x R80
4 x R80
297-1001-330 Standard 11.04 June 1998
Note: The SPMS R95 and R80 values may be changed at any BCS to
represent the correct network performance as seen in the field.
9-1xxx
Index value
100
95
80
50
0
Field interpretation
Perfect result.
Average of daily R values not exceeding R80,
observed in the SPMS calibration sample.
Only 1% of observed daily R values in the
calibration sample were larger.
Indication of poor performance.
Serious deviation from the normal. Exact
extent of deviation is not relevant.
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