It is possible to proceed with software product line adoption only once without major reinvestments and loss of time and money. In the literature, reported experiences of using the adoption models are not to be found, and especially the suitability of the models has not been reported. The purpose of this research is to compare known adoption models by formulating general evaluation criteria for the selection of an adoption model. Next an adoption model is selected for empirical research based on the context of a multimedia unit of a global telecommunication company. The empirical part consists of a case study analyzing the present state of adoption and producing plans for proceeding with the adoption. The research results can be utilized when selecting an adoption model for an empirical case and adopting a software product line in a software intensive organization.