The four key pillars to a Telecom Expense Management platform are:
Save money on carrier costs: Your TEM should automatically find inconsistencies in carrier invoices, billing errors, and more by continuously running telecom audits.
Make your team more efficient: When your TEM has a workflow engine,  you can save your team time and effort by eliminating the manual work of processing invoices, allocating costs, and performing accruals.
Gain full telecom visibility: TEM platforms should provide full visibility into your telecom-related expenses and services with detailed analytics and reporting down to individual service levels.
Centralize your telecom data: TEMs should centralize voice and network assets, expenses, usage, and services across all vendors with access for admins and cost-center managers.