ORANGE, Conn.--(BUSINESS WIRE)--Tangoe, Inc. (NASDAQ: TNGO), a leading global provider of Connection Lifecycle Management (CLM) software and related services, announced that it has closed the acquisition of IBM’s Emptoris Rivermine Telecom Expense Management business. IBM’s Rivermine TEM business includes comprehensive fixed and mobile telecom expense management software and related services, as well as a global blue chip customer base. The business fits particularly well within the core of Tan