Feasibility studies in telecommunications regard the identiication, among other things, the beneits to be gained by migrating a network technology to new or novel technologies. The company Movistar , is not the exception. It is currently supporting local CoreORE (Bogota) on SDH Transmission. The amount of trafic carried indicates a saturation of the channel, which involves using external carriers and does not guarantee reliability in service. This article describes the study of the projection on the local CoreORE, migrating to DWDM technology. The methodology is based on trafic studies, CoreORE scalability, scalability at the commercial level; comparing the behavior of the network to check that it has been implemented, taking into account variables such as availability and QoS parameters.