CASE STUDY CASE STUDY Tieto Case Study Seamless SIP Trunking Connectivity for a Cloud-based Unified Communications Service Tieto, a leading IT service company, operating throughout Northern Europe, selected the AudioCodes Mediant 3000 Enterprise Session Border Controller (E-SBC) to enable seamless interconnectivity with SIP trunks for customers of its Microsoft Lync-based managed Unified Communications and Unified Communications as a Servic

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