Abstract: The study represents the necessity of the decentralization in communications for ensuring high quality communications that are starting to use the broadband networks rather than Public Switched Telephone Network (PSTN). Further, the main modern technologies and solutions that can be used for such communications’ implementation are considered. Skype and P2PSIP are the examples of such solutions. On the basis of these technologies, the conclusion that there are two main types of the decentralized architectures is drawn: peer network (full decentralization) and hybrid hierarchical network. Hereafter, the choice for hybrid hierarchical network, on the basis of comparison of these architectures by quality criteria and simplicity of development and support was made. This scheme has lesser "survivability" but it has lesser variability in a way that facilitates software development.