Call Waiting Service Realization Of VOIP And Voice Encryption Research

At present, Internet has already developed into the global information network; its scale and user's quantity are second only to the public telephone network (PSTN) and cable television network. Already existing traditional telecommunication networkand network of new generation will also coexist in quite a long time. So no mattertechnically or on the service, the integration of traditional PSTN and IP data networkhas already become the inexorable trend of network development. VoIP technology isexactly a result merged in PSTN and IP network.VoIP is the media of utilizing IP network to be transmitted as the pronunciation, realize a kind of brand-new communication technology of pronunciationcommunication, refer to in general and utilize international Internet to be apronunciation telephone of the media. The technology that it adopts is referred to asVoIP (Voice over IP), namely convey the pronunciation in IP network. Technically, IPnetwork telephone whether taking IP as sign network divide into groups take andtaking multimedia as sign network business totalization two heavy major results thattechnology merge.In addition, with the maturity of the technological condition, the integration ofthe network is becoming the main trend of telecommunication development. Thetelecommunication network faces a problem now, that is how to exchange net thetraditional circuit to carry out the transition to the network of dividing into groups, thesoft-switch concept has offered an effective way for solving this problem, it is soft-switch main in ones that design philosophy for service/control and transmission/access not separating, join through the standard protocol between every entity andcommunication. Can be in case of not carrying on bigger change to the originalnetwork through soft-switch, carry on interconnection of the network of the originaldifferent protocol of use, and thus meet the requirement of unification of three nets.This paper introduces the development of VoIP, basic composition unit of VoIP system, the difference between VoIP and traditional PSTN at first; then then introduced the Voice Gateway software structure of Maipu. Finally in this system call-waiting for the application of functional design, interface procedures and follow-up test results.Along with the constant development of voice communication, voice security issues have gradually become more important. In this paper, I do some research about information hiding. Introduce the basic concept of information hiding, the study background and status; given a specific classification system to hide system, introduce the digital signature technology; make the hidden digital signature technology and information technology, presents a new voice authentication method.