hosted by fitting voice into your network zeus kerravala vice president enterprise infrastructure the yankee group yankeegroup com advisory and consulting services delivered experienced analysts conducting original research global view interpreted applied to local market conditions easy direct frequent client analyst interaction allowing interpretation application of our guidance analystdirectsm defining voip peer internet based ip enabled pbx managed centrex consumer corporate service provider offering is transformational similar migration from mainframes distributed computing 0 5 years early adopter making look like tdm 3270 emulators focus on technology concerns availability reliability security tco more important than roi 10 mass adoption applications growth value prop isvs integration what s possible laggers standardization removing cost efficiency status in organization no interest not deployed but trials departmentally fully across company