For many years, communications network equipment manufacturers performed most of the lab testing efforts when designing and certifying their gear for use in the field by their customers.  Now that fiber optic systems are the norm around the world for driving communications, many of the equipment users themselves are testing potential devices before deployment to determine the best solution for their own unique needs.  Financial service providers, utilities, local governments, and smaller regional internet providers have recognized that having even a small and efficient lab setup where they can simulate their network and train technicians can go a long way in optimizing their operations.