1. Sample Telecommunication Applications

2. Some Applications Applications Applications Classify a phone line/customer as a business or residential customer Classify a phone line/customer as a business or residential customer Will build predictive model for called customer, who may not be an AT&T customer. Will build predictive model for called customer, who may not be an AT&T customer. Classifying inbound service by types of use (voice, fax, modem) Classifying inbound service by types of use (voice, fax, modem) Identify telemarketers Identify telemarketers Uses: Marketing, revenue prediction, impact of changes (e.g., do not call list for telemarketing) Uses: Marketing, revenue prediction, impact of changes (e.g., do not call list for telemarketing)

3. Distribution of Weekday Calls by Hour

4. Comparison of Weekday Calling Patterns

5. Call Durations

6. Market Segments

7. Enterprise Miner Workspace

8. Some Results Segment 0Segment 1

9. More Results Segment 2Segment 3

10. Application 2 Identify how inbound (toll-free) service is used Identify how inbound (toll-free) service is used Is an inbound line being used for: Is an inbound line being used for: Voice Voice Fax Fax Data/Modem Data/Modem Useful for identifying trends and prediction Useful for identifying trends and prediction Fax usage has dropped significantly since last study, most likely to increased use of the Internet Fax usage has dropped significantly since last study, most likely to increased use of the Internet Useful for Marketing Useful for Marketing For example, for new fax services For example, for new fax services

11. Segmentation of Inbound Lines

12. Type of Usage by Segment

13. Distribution of Usage Fax and modem lines show opposite trends. Fax lines become more common in the low-usage segments while modem lines become less common in these segments. Fax usage grows to 5% in segment 8, but this contributes very few minutes

14. Summary Results for AT&T Toll-Free Lines

15. Chronological Comparison