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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Telecom Foundations

OSI model — 7 layers for telecom

interactive3 min

Lesson 16 of 24

Card 1 of 714%

Warm-up: Guess before you learn

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

Instagram runs the same on WiFi, 5G, and hotel WiFi. How?

Data travels wrapped in nested headers. Why nest them?

Video call stutters. Why ask "which layer is failing" first?

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

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