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.
VoLTE
Walking a VoLTE Call End to End Connected the EPC, IMS and RTP Pieces
Following one VoLTE call from LTE attachment through IMS registration, SIP session setup, bearer creation and RTP finally connected the year's separate labs.