1. Method for determining statistical crosstalk models based on published DSL deployment data Jack Douglass, Paradyne International Chair TIA TR30.3 Nov 4 to 8, 2002, ETSI TM6 TD42 024t42 Presentation jdouglass@paradyue.com

2. Procedure for Creating IC Tables Obtain published network data Calculate country weighting Calculate the percentage of DSL lines Determine the Probability of the number of pairs carrying disturbers P(x ≤ r) Graph the CDF for each country from the data –The bold lines on the y axis at Cumulative Distribution (CD) values of 50%, 70%, 85% and 95% –Determine number of disturbers for each CD/Severity Level (A, B, C, and D) –Values from the graph are rounded to the nearest whole number. Repeat procedure for each type of xDSL System for –residential –business Create Impairment Combination (IC) tables from the Cumulative Distribution –General European IC tables that considers the overall distribution of disturbers based on country weighting. –Country specific IC tables

3. Distribution of DSL Lines by Country

4. Cumulative Probability — 25 Pair Binder

5. CDF — 25 Pair Binder

6. Cumulative Probability — 50 Pair Binder

7. CDF—50 Pair Binder

10. IC Table — Residential

11. IC Table — Business

12. Summary A Statistically based European network model using the NMC methodology can be created using the procedure outlined in this document. Published Operating Company data is needed –Total number of lines per country –Total number of lines per country for each type of xDSL service Residential Business –Total number of lines per country for each type of xDSL service project for the year XX Residential Business