User's Manual

CHAPTER 2. System Overview

2-12

Disabling Zero Code Suppression (ZCS)

The SPI-2L10 collects statistics data and generates statistics files periodically.

The WSM collects these statistics files. A statistics file is composed of the header used to

indicate a statistics group and its detailed index (for example, a specific carrier, sector, CPU,

port, etc.) and the statistics data for that index.

In a statistics period, the statistics data for a specific index can become zero in a statistics

file in the following cases:

y When the index does not actually exist in the configuration.

y When the index exists in the configuration but its statistics data collected during that

period is zero.

Therefore, the Disabling ZCS function, which sets the zero data flag in the sub index

header, is provided to recognize the two cases separately.