Which three AVPs are needed to enable usage monitoring over Gx on the GGSN? (Choose three.)
A. Bearer-Identifier
B. Monitoring-Key
C. QoS-Information
D. Granted-Service-Unit
E. Usage-Monitoring-Level
F. Usage-Monitoring-Support
Which three AVPs are needed to enable usage monitoring over Gx on the GGSN? (Choose three.)
A. Bearer-Identifier
B. Monitoring-Key
C. QoS-Information
D. Granted-Service-Unit
E. Usage-Monitoring-Level
F. Usage-Monitoring-Support