发明名称 |
System and method for the synchronized transmission of tone sequences |
摘要 |
<p>A computer implemented method for transmitting dual tone multi-frequency (DTMF) tones is disclosed. The method includes sending an indication to a mobile device to start a cyclic ring back tone including ring and pause periods. The delay incurred to send a DTMF back tone to the mobile device is estimated. The server schedules the transmission of the DTMF tone to be received at the mobile device during a pause period of the cyclic ring back tone and the DTMF tone is sent as scheduled.</p> |
申请公布号 |
EP2355536(A1) |
申请公布日期 |
2011.08.10 |
申请号 |
EP20100151558 |
申请日期 |
2010.01.25 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
LIM, MIRANDA BING YING;SIDDIQUE, GIBRAN;OLIVER, BRIAN ALEXANDER;KRAMARENKO, VALENTINA IQOREVNA |
分类号 |
H04Q1/45;H04L27/30;H04M1/50;H04M3/42;H04M19/02 |
主分类号 |
H04Q1/45 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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