ree public network, private network and private network with guest access. 10.2.1.3. Internet Available field The Internet Available field is included in the Interworking element. This field informs mobiles if access to the Internet is available at the access point, which may not be the case in environments where the operator (e.g. a museum) may limit Wi-Fi access to only local content. 10.2.1.4. BSS Load element The BSS Load information element contains information on the use of the radio channels and the number of associated mobiles on the access point. The mobile uses this information when selecting a network. 10.2.2. Information elements provided by the ANQP server 10.2.2.1. 3GPP Cellular Network element The information element 3GPP Cellular Network contains the identity of the 4G mobile network. It allows the mobile to check from its universal subscriber identity module (USIM) if the Wi-Fi network operator has a roaming agreement with the 4G mobile network operator. The identity of the 4G mobile network consists of the mobile country code (MCC) and the mobile network code (MNC) allocated to the operator. 196 Wi-Fi Integration to the 4G Mobile Network If the information element 3GPP Cellular Network matches any identity stored in the mobile, then it prioritizes this access point for the association. 10.2.2.2. NAI Realm element The information element NAI Realm provides a list of domains identified by the network access identifier (NAI) for service providers that can authenticate a mobile with either a user ID or a password or a certificate. Each entry in the NAI Realm list can identify the EAP (Extensible Authentication Protocol) methods that are supported for authentication. 10.2.2.3. Roaming Consortium element The information element Roaming Consortium provides a list of roaming consortium identifiers and service provider partners with roaming agreements. The information element Roaming Consortium is broadcasted in the management frame Beacon or transmitted in the Probe Response frame. A mobile may request 