便携电话机(1)的分组数据存储部(12)在分组数据比分组呼叫确立应答信号先被接收到的情况下，将分组数据存储到存储器。

If the packet data is received earlier than the packet call establishment response signal, a packet data storing part (12) of the mobile telephone unit (1) stores the packet data into a memory.

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之后在接收到分组呼叫确立应答信号的情况下，分组数据存储部(12)从存储器读出分组数据并从存储器删除。

Thereafter, when the packet call establishment response signal is received, the packet data storing part (12) reads the packet data from the memory and deletes it therefrom.

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