A success of network integration project depends on how well we are able to provide a network implementation fulfilled with customer's requirements within an established budge. As its environment have become enlarged and distributed, the interested parties will be increased and as its customer's technologies have become generalized through a lot of learning opportunities, the requirements will be increased and its qualities will be better. Therefore, it is getting difficult to satisfy their requirements and maintain its qualities. Effectively managing conditions that are able to have effects on resources and schedule at the early requirement analysis stage due to the requirement changes at the end of the project, we are about to offer a service quality and requirement management that can fulfill with customer's requests.

  Operational strategy for inventory control in the distribution system has been given attention. If an individual enterprise implements the strategy, it is not easy to gain scale merits because of limited quantity or burden of inventory. In this study, w