| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system capable of setting the ringer tone of a communication partner easily. SOLUTION: The communication system comprises means (S210, S220, and S230) for establishing communication connection, and a means (S240) for transmitting ringer tone data as first audio data of a voice transmission protocol after communication connection is established. COPYRIGHT: (C)2005,JPO&NCIPI
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