高清、会议和网络增值应用成为IP电话的突破口VoIP的蓬勃发展,并不等于IP电话机波涛汹涌,原因是VoIP的实现方式众多,IP电话机只是这众多实现方式中的一个子集。IP电话机的一个竞争对手是计算机,一台连入互联网的计算机配上耳机和麦克风,即可通过特定的软件实现IP电话的功能,这种方式被称作软IP电话,是最早的IP电话实现方式。目前,MSN、QQ等即时通信工具也引入了语音聊天功能,广 HD, Conferencing, and Value-Added Networking As a Breakthrough in IP Telephony VoIP is booming and does not mean that IP telephony rages because of the many ways in which VoIP can be implemented, and IP telephony is just one subset of many of these implementations. One competitor to IP telephony is a computer. An Internet-connected computer, coupled with headphones and microphones, enables IP telephony through specific software. This is called a soft IP phone and is the earliest IP phone Method to realize. At present, MSN, QQ and other instant messaging tools also introduced voice chat function, wide