RETRIEVAL OF USER EQUIPMENT CAPABILITIES BY APPLICATION SERVER

摘要

The present invention provides a method for establishing a call with a user device or from the user device in a wireless communication system including a first wireless network and a second wireless network. The second wireless network relates to the first wireless network. The wireless communication system includes a serving node and an application server capable of communicating with the serving node. The method comprises a step of receiving a message (the message includes information for the network capability of the user device) from the serving node in the application server and a step of determining whether to anchor the call in the second wireless network or the first wireless network according to the information for the network capability of the user device in the application server. [Reference numerals] (1.1,1.2) User device network capability query; (1.3,1.4) User device network capability provision