| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for changing a ringing tone of a mobile phone to a commercial. Ž<P>SOLUTION: People who want to change a ringing tone to a commercial are invited from among mobile phone owners, and commercial sponsors are invited simultaneously. In the commercial call system, mobile phone owners who agree to change a ringing tone to a commercial are regarded as registered members and paid a remuneration. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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