Apparatus for mediating between a cellular telephony network and a wireless LAN, comprises a first adaptor for allowing signal exchange with the cellular telephony network, a second adaptor for allowing signal exchange with the wireless LAN; and a presence tracker associated with the adaptors for obtaining and storing a current location of a wireless device on any of the networks. The apparatus allows for mobile wireless devices to connect to wireless LANs and be able to register and receive services from their mobile operator, by treating the LAN in the same way as a foreign network in International roaming.
