US Patent 10462729 Roaming management

A method of operating an interconnect server for a roaming network, the roaming network having a plurality of cellular networks and a plurality of hotspot networks formed of wireless access points, the interconnect server being connectable to a routing server within each of the plurality of cellular networks and to a routing server within each of the plurality of hotspot networks, wherein the plurality of hotspot networks are operable to allow subscriber devices of the plurality of cellular networks to connect to a wireless access point forming part of the hotspot network and access the device's subscriber cellular network, is disclosed.