It is difficult to build a solution if you don’t know the requirements. User requirements are the least technical and also the most subjective. Your task is to gather requirements (User, Application, Device and Network) to complete this project with the help of techniques such as questionnaire, one-on-one interviews with users, Call Centre management, and staff members.Application requirements can be determined from application information, experience, testing and represent what is needed by applications to successfully operate on the system. Device requirements are related to performance characteristics of network and their location information. With the help of diagrams and flow charts, categorise all these requirements in groups and create an assessment plan for the Call Centre network.