In-Class Example (Incremental Traffic Carried ) New proposed trunk dimensioning criteria: “Each trunk in a group must earn enough revenue to pay for itself based on its carried traffic in the 3 busiest hours over 250 business days of the year.” Revenue = $ 0.12 / minute in use Annual cost = $1890 Assuming A=10 E in the busiest 3-hour period and assuming a direct trunk group with no overflow: Find # trunks under new criteria What is the blocking? Recommended “traffic engineers” design? Show traffic engineered design still makes money