采用东进D系列模拟电话语音卡编写的DTMF通信控制程序，与下位机完成数据传输。-Dongjin D analog telephony card prepared by the DTMF communication control program, and the next crew to complete the data transmission.

用java编写的模拟固定电话的消费系统，希望会对大家有用，，谢谢！-Written with java analog fixed-line consumer systems, we hope will be useful, thank you!