IP Telephony is the two-way transmission of audio over an IP network. When used in a private intranet or WAN, it is generally known as "voice over IP," or "VoIP." When the public Internet is the transport vehicle, it is referred to as "Internet telephony," however, all three terms are used synonymously.

Convergence or integration of data, voice, and video onto a single network can play a critical part in helping your company with the following:

Identify new ways to generate revenue

Reduce operational costs

Increase organisational flexibility

Generate a sustainable competitive advantage.

Another benefit of a converged network is that many new business applications that are now deployed on converged networks provide immediate ways to increase personal and workgroup productivity, while enhancing customer care and responsiveness.