tomers in a building on the backbone ring Typical total MRC/building (considers one end) $10,000 ($5,000 MRC per customer, but only $2,500 is generated at the building in question) Allocated ring cost per building/MRC (16 buildings) Allocated spur cost per building/MRC $1,500 Allocated CO equipment cost per building/MRC Allocated CPE cost per building/MRC Allocated riser costs per building/MRC $1,600 Allocated network management costs per building/MRC Allocated SGA (= 18% of revenue) $1,800 Allocated operations costs (= 17% of revenue) $1,700 Total costs $8,568 Net profit $1,432 Margin % Two 100-Mbps customers in a building on the backbone ring Typical total MRC/building (considers one end) $7,000 ($7,000 MRC per customer, but only $3,500 is generated at the building in question) Allocated ring cost per building/MRC (12 buildings) Allocated spur cost per building/MRC $1,500 Allocated CO equipment cost per building/MRC Allocated CPE cost per building/MRC Allocated riser costs per building/MRC Allocated network management costs per building/MRC Allocated SGA (= 18% of revenue) $1,260 Allocated operations costs (= 17% of revenue) $1,190 Total costs $6,676 Net profit Margin % Four 100-Mbps customers in a building on the backbone ring Typical total MRC/building (considers one end) $14,000 ($7,000 MRC per customer, but only $3,500 is generated at the building in question) Allocated ring cost per building/MRC (6 buildings) Allocated spur cost per building/MRC $1,500 Allocated CO equipment cost per building/MRC Allocated CPE cost per building/MRC Allocated riser costs per building/MRC $1,600 Practical Design and Economic Parameters Table 10-11 Financial Item cont. Results of Run 1 Allocated network management costs per building/MRC Allocated SGA (=18% of revenue) $2,520 Allocated operations costs (= 17% of revenue) $2,380 Total costs $10,489 Net profit $3,511 Margin % One 1,000-Mbps customer in a building on the backbone ring Typical total MRC/building (considers one end) $7,000 ($14,000 MRC per customer, but only $7,000