A system comprising: a plurality of nodes connected in a first wireless network; a plurality of access points connected to the first wireless network and to at least one second wireless network distinct from the first wireless network, the plurality of access points each respectively constituting an interface between the first wireless network and the at least one second wireless network, each of the access points having access parameters to the at least one second network, wherein: each of the access points is configured to advertise, to the nodes in the first network, the access parameters said access point has to the at least one second wireless network, the access parameters including an indication of access restrictions the corresponding access point currently has to the at least one second wireless network, respectively; each of the nodes is configured to maintain a list of the access parameters of each access point in the first wireless network based on the advertised access parameters respectively transmitted from the access points; each of the nodes is configured to determine whether data is to be transmitted to the second wireless network according to one of a first transmission mode and a second transmission mode based on the data to be transmitted and the list of access parameters maintained by that node; in the first transmission mode, the node is configured to determine to transmit the data to a first one of the access points having a lowest cost between the node and the first one of the access points; and in the second transmission mode, the node is configured to determine to transmit the data to a second one of the access points having fewer access restrictions to the second wireless network than the first one of the access points. a plurality of nodes connected in a first wireless network; a plurality of access points connected to the first wireless network and to at least one second wireless network distinct from the first wireless network, the plurality of access points each respectively constituting an interface between the first wireless network and the at least one second wireless network, each of the access points having access parameters to the at least one second network, wherein: each of the access points is configured to advertise, to the nodes in the first network, the access parameters said access point has to the at least one second wireless network, the access parameters including an indication of access restrictions the corresponding access point currently has to the at least one second wireless network, respectively; each of the nodes is configured to maintain a list of the access parameters of each access point in the first wireless network based on the advertised access parameters respectively transmitted from the access points; each of the nodes is configured to determine whether data is to be transmitted to the second wireless network according to one of a first transmission mode and a second transmission mode based on the data to be transmitted and the list of access parameters maintained by that node; in the first transmission mode, the node is configured to determine to transmit the data to a first one of the access points having a lowest cost between the node and the first one of the access points; and in the second transmission mode, the node is configured to determine to transmit the data to a second one of the access points having fewer access restrictions to the second wireless network than the first one of the access points. each of the access points is configured to advertise, to the nodes in the first network, the access parameters said access point has to the at least one second wireless network, the access parameters including an indication of access restrictions the corresponding access point currently has to the at least one second wireless network, respectively; each of the nodes is configured to maintain a list of the access parameters of each access point in the first wireless network based on the advertised access parameters respectively transmitted from the access points; each of the nodes is configured to determine whether data is to be transmitted to the second wireless network according to one of a first transmission mode and a second transmission mode based on the data to be transmitted and the list of access parameters maintained by that node; in the first transmission mode, the node is configured to determine to transmit the data to a first one of the access points having a lowest cost between the node and the first one of the access points; and in the second transmission mode, the node is configured to determine to transmit the data to a second one of the access points having fewer access restrictions to the second wireless network than the first one of the access points.