The document discusses the business case for VoIP and MoIP. It defines key terms and outlines the business case, noting potential cost savings from moves/changes, long distance, and total cost of ownership compared to legacy systems. It then discusses benefits of MoIP like improved productivity, collaboration, and geographic flexibility. A case study on a MoIP trial at the City of Winnipeg is presented, highlighting feature usage. The future is seen to involve convergence of applications over various access methods and devices, represented by XoIP. Non-IT savings alone may not justify adoption, and productivity gains must be measured to strengthen the business case.