A system for managing a communication service within communication networks using multiple access technologies, the communication service being used by a user equipment comprising at least one network interface, wherein the system comprises: at least a first and a second access node and one resource management function being adapted to monitor a network resource information of one or more access nodes, wherein the user equipment is connected with and has access to the first access node; characterized by further comprising a user profile management and authorisation authentication accounting function being adapted for storing information about a user profile and a connectivity parameter of the network interface of the user equipment, an application control function being adapted for providing a service requirement information, a resource and admission control function being adapted for receiving the service requirement information from the application control function, and for inquiring the network resource information from the resource management function; wherein the resource management function, the user profile management and authorisation authentication accounting function, the application control function, and the resource and admission control function being provided on the access network side; wherein the resource and admission control function is adapted to communicate with the user profile management and authorisation authentication accounting function before the user equipment contacts the second access node, to select an access node for the network connection of the user equipment from the first access node and the second access node based on the service requirement information and the network resource information, and to reserve a transport resource available for the user equipment on the selected access node. at least a first and a second access node and one resource management function being adapted to monitor a network resource information of one or more access nodes, wherein the user equipment is connected with and has access to the first access node; characterized by further comprising a user profile management and authorisation authentication accounting function being adapted for storing information about a user profile and a connectivity parameter of the network interface of the user equipment, an application control function being adapted for providing a service requirement information, a resource and admission control function being adapted for receiving the service requirement information from the application control function, and for inquiring the network resource information from the resource management function; wherein the resource management function, the user profile management and authorisation authentication accounting function, the application control function, and the resource and admission control function being provided on the access network side; wherein the resource and admission control function is adapted to communicate with the user profile management and authorisation authentication accounting function before the user equipment contacts the second access node, to select an access node for the network connection of the user equipment from the first access node and the second access node based on the service requirement information and the network resource information, and to reserve a transport resource available for the user equipment on the selected access node.