The current pace of technology development is such that it is unusual for the technical configuration of a service to remain constant throughout the lifetime of a business plan. Instead, a model must allow for the change of equipment models or suppliers over time. In a ‘brown field’ development, you may consider replacing existing infrastructure with a more up-to-date and efficient solution, depending on the age of the existing assets.
Close the Results program, switch back to the Editor, close any previous models and re-open the WiMAX-DSL02 model.