| 摘要 |
The invention comprises a method for registering and deregistering user equipment from a communications system and comprises the steps of sending a request to a first node to register or deregister the user equipment from or to the communications system, determining at the first node to determine if the request is a request to register or a request to deregister, and carrying out at one least predetermined operation at a second node only if the request is a request to register. |
