Studies And Design On VoIP Based On NGN

Great changes have been made with the development of Internet,communication have to consider providing more multimedia to attract consumer.VoIP telephony based on IP network offers a new way to shorten distance among the people with low price.And the new-generation VoIP network appeard with the birth of SoftSwitch technology based on multimedia communication.The question is researched and discussed in detail in this article,the questions are suggested.MEGACO protocol is introduced which is adopted by VoIP system communication with the core of softswitch technology.After analyse the process of calling based MEGACO protocol,we design a system model of VoIP in business.NAT/firewall penetration technology,user SBC,certification of security and the design of the Integrated Access Gateway are researched telatively in article.The results of study have great value of reference to actual development and application in business of VoIP technology in this thesis.