Loading courses…
4G LTE Essentials
Voice communication demands consistent low latency and minimal jitter, which the default best-effort bearer cannot guarantee. When a VoLTE call is established, the PCRF instructs the PGW to create a dedicated bearer with QCI 1 parameters. QCI 1 specifies a guaranteed bit rate bearer with priority level 2 and a maximum packet delay budget of one hundred milliseconds. This ensures the LTE scheduler always reserves sufficient radio resources and prioritizes voice packets over background data traffic.
Try these first, even if you're not sure. Guessing primes your brain.
Voice and web both run over IP. Should they get equal treatment?
Two bearers exist. How does the phone pick the right one per packet?
What if voice bearers stayed open forever after calls?
Answer all 3to continue — it's OK to be wrong.