Results from Forrester's May 2005 survey of 652 US enterprises shows that the experience of early telecom adopters provides both later adopters and suppliers with important lessons. US organizations that have fully deployed new telecom technologies like MPLS, IP telephony, and site-to-site VoIP report that cost, scalability, availability, and manageability presented greater than anticipated obstacles to implementation. Moreover, these factors rise in importance with actual use.
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