A network node, a coordination node, a management node, a communication system and method for operating a communication system having a first type of communication network and a second type of communication network, wherein a request message identifying a network node in the first type of communication network is sent to the coordination node in the first type of communication network by the management node in the second type of communication network, the network node is removed from the first type of communication network by the coordination node, the removed network node is included in the second type of communication network by the management node, and a data interchange is performed between the management node and the network node inserted in the second type of communication network.