Those who have earned this badge have developed a good understanding of Transport Network Layer QoS (Quality of Service). They know how the LTE QoS attributes (including QCI values) are mapped to the Transport Layer (including the DSCP - Differentiated Services Code Point), and how DiffServ operates in support of overall end-to-end Quality of Service. They understand the architecture of both LTE / EPS and the Transport Network, and the common points for implementation.