You must tell the messaging system to start collecting traffic data before the system can format that data into a report. Reports can be produced for the current day or hour. Therefore, you can start running traffic reports almost as soon as traffic collection is activated. However, data for the full range of reporting periods (such as 192 hours, 8 days, or 13 months, depending on the report) is not available until that many hours', days', or months' worth of traffic data has been collected.
To activate traffic collection for the system and to define the prime time hours for collection: