COMMUNICATION SYSTEM AND COMMUNICATION METHOD

A communication system for providing a wireless terminal with access to a network, the wireless terminal storing an identification number for accessing a first network, the communication system being configured to receive a connection initiation request from the wireless terminal while the wireless terminal is located in a second service area of a second network, the second service area being different from a first service area of the first network; select, in response to the connection initiation request, a gateway of a third network connected to the second network; and send a gateway ID of the selected gateway toward the second network. A method and a non-transitory computer-readable storage medium storing a program are also disclosed.