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 Date: 2015-09-16 03:33:32Business Information technology management Professional studies IT service management Outsourcing Marketing Quality of experience Streaming Telecommunications engineering Service-level agreement Quality of service Voice over IP |
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From Service Level Agreements (SLA) to Experience Level Agreements (ELA): The Challenges of Selling QoE to the User Martín Varela† , Patrick Zwickl∗ , Peter Reichl∗ , Min Xie‡ , Henning Schulzrinne§ † VTT