| 摘要 |
A first interface unit receives an incoming signal notification addressed to a terminal apparatus. A generator generates a first message used to have the received incoming signal notification in a paging channel. A second interface unit outputs the generated first message to a base station apparatus corresponding to a paging area of the terminal apparatus. The first interface unit receives, from the base station apparatus, connection information indicating that a communication channel for data communication is established between the terminal apparatus and the base station apparatus. When the connection information is received, the generator generates a second message used to have the incoming signal notification included in the communication channel. The second interface unit outputs the generated second message to the base station apparatus that has established the communication channel with the terminal.
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