A system configured to be installed in an aircraft, the system comprising a first functional domain and a second functional domain. The first and second functional domains are configured to provide a first and service, respectively. The system further comprises a wireless access point configured to be externally managed by a controller and configured to communicate with a mobile terminal. The system comprises a controller configured to communicate with the wireless access point, the first and the second functional domains, configured to control the wireless access point and configured to control wireless access of the mobile terminal to the first and second functional domains. Further, the use of such a system in an aircraft, an aircraft comprising such a system and a method of controlling wireless access of a mobile terminal to a first functional domain and a second functional domain in an aircraft are disclosed.