Make and answer phone calls Detect tone and pulse digit from the phone line Capture Caller ID Support blind transfer, single-step transfer/conference, consultation transfer/conference, hold, unhold. Control of the local phone handset

source code for OFDM modem using sound card

数据通信 声卡PSK 调制解调 声卡通信 数据发送 文件传输-Data the the communication sound card PSK modem sound card communication data sent File Transfer

能测试音频调制器的软件，可以参考一般的原理和结构。-This is the source code for sound modem and may be used for reference to understan d the principle and structure.