I don't think there is one VoIP product that dominates the market today. The major vendors (Cisco, Lucent and Nortel) each have a number of different products that serve different roles. If VoIP service through Windows became widely available and used, then this could become the dominant VoIP product.
Dig Deeper on Network Infrastructure
Related Q&A from Ted Studwell
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.