An effective Telecom Expense Management (TEM) program manages the full lifecycle of a telecom expense. It focuses on eight major service domains which include inventory management and change control, sourcing, procurement and fulfillment, invoice management, expense management (including validation and optimization), usage chargeback, payment, and reporting which provides business intelligence.Enterprises do not have to take on the challenge of managing all these domains on their own, and they don’t need to go to one firm to buy all of these solutions. There are pros and cons to consider in having a single TEM supplier that can perform all of these functions or using specialists for particular areas. Regardless of which approach an enterprise selects, an effective TEM program transitions decentralized processes into a unified approach to manage telecom expenses. TEM programs foster better communication among different groups and unification of telecom expense management functions to drive better results. The standards and KPIs must meet the criteria of openness and the measures must be quantifiable, universal, and consistent. These metrics align with business value and tie directly to program ROI.