VoIP的技术发展及其网络协议

With the development of information and network technology，Internet has entered the ordinary families，people have already been no longer satisfied with simple net surfing to get information，but need two-way interactive service, then VoIP technology has came into being. Due to its advantages such as low cost, flexible services, etc, IP phone is becoming one of the most rapidly developing technologies in the world. VoIP is a kind of technologies based on IP telephone, and promotes telephone increment services. The biggest superiority of VoIP is that it could widely use the environment that connect Internet with global IP, which provides more and better services than traditional services. Also it is the hottest topic of discussion in Internet application domain.