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.

《Visual c++ 项目开发案例 全程实录》（第二版）第三章 企业电话语音录音管理系统 配套源代码-The Visual c++ project development case full Record (Second Edition) enterprise telephony voice recording management system supporting source code

Implementing a telephony-enabled application using Avaya Telephony Services Application Programming Interface (TSAPI) requires an understanding of TSAPI core concepts of Session and Event Management, control services, and private data. This tutoria