High-availability optical multi-carrier interface for operational expenditure reduction

In this paper, network maintenance costs are evaluated quantitatively to confirm the effectiveness of a scheduled maintenance scheme for optical networks. Numerical simulations show that truck-roll maintenance is drastically reduced with 2 redundant links. The scheduled maintenance scheme is cost effective when the truck-roll cost exceeds about 5 times that of scheduled maintenance and the transponder cost is less than about 20 times as much as the scheduled maintenance cost.