What are the quantifiable benefits of a software-defined access network (SDAN)? This operator is seriously considering SDN and NFV to simplify its fixed access network and operations, but it is hard to find a partner with the right expertise to help figure out what the business case might be. In order to get an answer to its questions, this operator asked Nokia to conduct an OPEX modelling exercise. This study quantifies the savings the operator would realize and helps to fully understand the implications of SDAN without resorting to hype.