Handover of a mobile node between networks of different technologies in a mobile ip telecommunications system

The present invention relates to a telecommunications system for providing mobile internet protocol related communications services to mobile nodes via a plurality of access networks. Each of the access networks includes an access gateway for controlling the connection to the access network according to the mobile node, the communication services are provided within internet protocol communications sessions having different levels. The system includes the mobile node from the mobile node to the current includes a mobility manager operable to receive link quality evaluation messages are (MNE) providing an indication of a currently available link quality from re-registering the access network. The mobility manager also operates in conjunction with a communications session level in response to the link quality currently available from an application server to manage a communication service to receive application server messages for changing a communications session level. Mobility manager receives access network evaluation operates to messages from the access gateway of each of the access network that the mobile node communicates. Mobility manager of the first access network and a second access network of said first and second access networks of the other one subscription change or communications session level of the first mobile node of the first mobile node from one of the access network, The instruction to change. Changing the change or communications session level of the subscriber is busy state of the first access network or second access networks, the line currently being experienced by the mobile node, the quality, the applications server messages, and the first mobile node according to the subscribed quality of service level is performed. The quality of service for communications sessions of mobile nodes can be maintained in the mobile IP v4 / v6 stack as not controlled independently from the wireless local area network (QLAN) access network. In addition, the access network congestion may be busy is released by controlling the communications bandwidth used by mobile nodes.