The number of VoIP-telephony users is growing every year and, according to In-Stat, last year it grew by 34 million: from 16 million subscribers to more than 50 million. At the same time, the number of chatters on the phone via the Internet in Europe increased by 14 million, While in the US in 2006 – by 4 million.
Based on the information from previous years, In-Stat analysts forecast an increase in the user VoIP market from $ 15 billion to $ 44 billion over five years. However, they note, America’s share will not exceed 18%.
In 2011, about 38% of all households connected via broadband communication channels will use VoIP and will be aware of how to setup VoIP for business.
Most companies today are introducing IP-telephony in smaller or larger scale – from pilot projects to full-scale transition.
At the same time, nearly 80% of IT specialists believe that each project of the new technologies implementation should have a commercial justification, especially in the face of complex macroeconomic situations, reducing the budgets and minimization of IT staff.
However, the preparation of such a justification is often a difficult task due to the inability to accurately estimate the costs of implementing and operating a new technical solution beforehand.
Transferring to VOIP means choosing a new telecommunications paradigm – in this, it is fundamentally different from adding a new PBX or network with new routers to an existing TDM system.
For such an analysis one should use the information about costs of various companies for the creation of local IP-telephony systems and the introduction of VOIP-technologies in global networks. In this paper, we consider current trends related to the deployment of VOIP in medium and large systems, and the corresponding costs.