发明名称 CASHCALLING AND VOICEMINING SYSTEM
摘要 <p>Methods and apparatus for providing telecommunications and empirically verifiable advertising are disclosed. A caller initiates a call by lifting a handset and dialing a toll-free telephone number. A credit or payment is issued to the caller for each minute the call continues. Brief commercial messages are played to the participants of the call to promote goods or services offered by a sponsor.</p>
申请公布号 WO2002051119(A1) 申请公布日期 2002.06.27
申请号 US2001044713 申请日期 2001.12.17
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