If you were at VoN 2004, then you would think that VoIP is the greatest thing since well, dot.con. A revolution, perhaps! Instead it is more of an evolution. Art Rosenberg of The Unified-View has come out a study which says something to the same effect.
Since all leading voice telecommunications providers are now delivering IP-based telephone system products for an IP network environment, their existing TDM customers are depending on them to support their migration to converged communications. In particular, new voice application products that support a selective migration from legacy TDM equipment are making migration implementation more flexible and cost-effective.