Colombian service providers may do so in four ways. The first is by "cross-border supply," which is where the service moves. In this case, neither the consumer nor the provider must move to the other territory. Is includes such things as conducting consultancy, receiving calls to an attention or call center, and providing advice via telemedicine. The second method is known as "consumption abroad," which occurs when the consumer moves to another country to receive the service. This includes such things as tourism. The third method is known as "commercial presence," which is when capital moves, such as through a subsidiary of a company. This is related to foreign direct investment and is covered in the Investment Chapter. Finally, the fourth method is known as "presence of natural persons," in which the service provider moves, temporarily, to another country to provide the service. This includes such things as training or repair services.