改程序用vc++实现了语音电话的功能，可以帮助读者清楚语音电话的实现过程，原理。此外该程序适合想对语音电话有进一步提高认识的读者只用。内涵各个模块的实现。功能齐全。-Change procedure using vc++ to achieve the function of voice calls, voice telephony implementation process, the principle can help the reader.In addition, the program