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The High-Capacity Central VoIP switch designed by Netas, provides infrastructure and oppurtunities for integration of TDM/ATM networks and new generation IP technologies. Firstly, this new VoIP switch has been deployed for transformation of residental lines into IP networks. While the residental line network transformation is going on, it is seen that the central switches also require more trank carriers...
Internet protocol (IP) is emerging as a ubiquitous protocol for communications and applications. IP-based services aims to provide consumers anytime-anywhere access to content over range of electronic devices and to integrate services & content, to tie them together. This paper presents an overview of various network architectures and their evolution to include an all IP based infrastructure fuelled...
This paper will discuss how the evildoers use communication technology to commit the crime such as the crime facts and crime techniques. The analysis will be focused on the security of Internet phone and organize a prevention method of Internet phone call attack and the attention points of setting up a Internet phone. At the same time, the importance of digital evidence and digital forensics will...
In this paper, the technology of auxiliary VLAN is discussed. When IP phones are connected to the existing switch-based campus area network, the data traffic and voice traffic are present on the VLAN at the same time. To avoid a significant reduction on the quality of the VoIP traffic, the voice traffic is separated from the data traffic on an auxiliary VLAN. In an IP PBX, there are three frame types...
This paper defines network function and information flow to process the calls between Wibro and mobile phone, Wibro and wired phone which is resulted from number portability of Wibro VoIP by using NPSS. This paper also defines new number portability system, network function, information interface packet and system function according to the requirement of number portability.
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