System for application server autonomous access across different types of access technology networks

A method of providing wireless telecommunication services, implemented in at least one network node, the method comprising:

• maintaining a mobility policy and a list of a plurality of access networks which are available for the wireless transmit/receive unit (WTRU) to connect, wherein at least two of the plurality of access networks are based on different access technologies;
• communicating with the WTRU via a first access network using Internet Protocol (IP);
• obtaining a permanent identity for the WTRU:
• sending mobility-related information regarding the first and the second access network to the WTRU based on the mobility policy and the permanent identity;
• and
• communicating with the WTRU via a second access network using IP in response to a transition of the WTRU from the first access network to the second access network;
• wherein at least one of the first access network and the second access network is included in the list of the plurality of access networks.