Reason #3 - VoIP does not require a full service IT department This may be the best reason to use hosted VoIP, but this is also another misconception holding back adoption. With legacy telephony, enterprises have long had a highly trained team of IT staff to maintain this service. In this world, voice was separate from data, which meant that the core IT staff had little understanding of telephony. For this reason, early implementations were problematic, as they did not recognize how the real-time nature of VoIP required special attention. This has since largely been solved, but it has created the widespread impression that VoIP is complex.