Invention Grant
US08180331B2 System and method for in-band modem to modem communication 有权
带内调制解调器到调制解调器通信的系统和方法

System and method for in-band modem to modem communication
Abstract:
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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