ENGLEWOOD, Colo.--(BUSINESS WIRE)--CSG International, Inc. (NASDAQ: CSGS), a global provider of interactive transaction-driven solutions and services, met with clients, partners, and analysts from 28 countries in Lisbon for its annual EMEA conference. This year’s event addressed current transformational industry shifts and the changing role of telecom operators in the digital age. The telecommunications industry, like most industries, is in a state of technological and economic flux driven by i
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