发明名称 |
SYSTEM AND METHOD FOR IN-BAND MODEM TO MODEM COMMUNICATION |
摘要 |
Systems, methods and programmed instructions are disclosed useful for transmitting signals representing data messages to and from a wireless handheld telephony device along a first call leg of a communication session previously established between the wireless handheld telephony device and at least one second telephony device, the communication session being controlled by a call control server.
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申请公布号 |
US2011244835(A1) |
申请公布日期 |
2011.10.06 |
申请号 |
US20100754790 |
申请日期 |
2010.04.06 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
GEORGE RICHARD JOHN;SIMMONS SEAN BARTHOLOMEW |
分类号 |
H04W4/00 |
主分类号 |
H04W4/00 |
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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