The concept of network is changing from one of plumbing to platform. Using Internet Protocol (IP) at the core, companies can have a single, converged network that carries all data, voice, video and applications.
In an enterprise environment, this approach unites previously disparate organizations and systems, increases performance and reliability, provides new capabilities and greatly reduces costs.
With voice absorbed into the network as just another data type - voice over IP (VoIP) - voice networks will become obsolete. As evidenced by Skype, VoIP can effectively eliminate long-distance and video conferencing charges. This has presented a major disruption to every telecommunications company, forcing a reinvention as market demand (both commercial and consumer) rapidly shifts to providers who can offer converged services.