QCI 5 for IMS Signalling and QCI 1 for Voice Made QoS Concrete
VoLTE QoS became easier to understand when I separated the persistent IMS signalling bearer from the dedicated low-latency bearer created for voice media.
QoS
Gx Charging Rules Only Made Sense After I Followed the TFT
A charging rule becomes concrete when its packet filters are followed all the way into bearer treatment.
Dedicated Bearers Stopped Feeling Abstract Once I Traced the Create Bearer Request
Tracing a Create Bearer Request tied policy, QoS and user-plane classification together in one procedure.