Which three AVPs are needed to enable usage monitoring over Gx on the GGSN? seenagape 9 years ago Which three AVPs are needed to enable usage monitoring over Gx on the GGSN? (Choosethree.) A. Bearer-Identifier B. Monitoring-Key C. QoS-Information D. Granted-Service-Unit E. Usage-Monitoring-Level F. Usage-Monitoring-Support ← Previous question Next question →