What does that even mean? I think you have to at least get a grasp of what the essential concepts of unified communications are, how they might impact your organization, and what the potential benefit is to justify the upfront investment.
However, even after you address those issues and make some decisions about how to move forward with a unified communications deployment, there are still some fundamental questions to answer in terms of what your current network infrastructure can handle. The audio and video components of unified communications are bandwidth intensive and sensitive to things like latency and jitter. Building UC on a weak infrastructure is a recipe doomed for failure.
This article from Computing SA addresses this question specifically from an SMB point of view. What is the value or benefit of unified communications for small or medium businesses? In the end, the author poses a different question: “have you realised that you need it?”