| 摘要 |
PROBLEM TO BE SOLVED: To enable users to mutually speak without feeling the presence of data on the outside by sharing data between terminals through a server device. SOLUTION: When information received by a portable telephone A is transferred to a voice data preserving server device 20, that information is stored in the server device 20. Another portable telephone set B can read out the information of the portable telephone set A stored in the server device 20. Oppositely, the portable telephone set A can read out information received by the portable telephone set B. Therefore, users can mutually speak without feeling the presence of data on the outside.
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