Newest courseRAN Optimisation & Performance

Why the call does not get in, why it drops, and why it is slow — told apart on evidence, with the denominator checked before the verdict.

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4G LTE Essentials

Real-world: Why VoLTE calls sound better than 3G

lab2 min

Lesson 26 of 33

Card 1 of 617%

Warm-up: Guess before you learn

Try these first, even if you're not sure. Guessing primes your brain.

A codec cuts everything above 3 kHz. How do "s" and "f" sound?

Both phones support HD, but calls sound narrowband. Why?

After narrowband and wideband voice, what comes next?

Answer all 3to continue — it's OK to be wrong.

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