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Level 0
Telecom Foundations
Start your telecom journey with the fundamentals of wireless communication, radio frequency, and networking protocols. No prior telecom experience needed.
16 interactive1 simulation4 labs3 quizzes
0%
0/24 lessons
How Cellular Networks Work
0/6Understand the end-to-end journey of a phone call and a data session, and see how cellular technology has evolved across generations.
What happens when you make a phone call
Trace the path of a voice call from your phone through cell towers, the core network, and out to the other party.
interactive3 min
What happens when you open a webpage on mobile
Follow a mobile data session step by step — from radio link setup to IP packet delivery and back.
interactive3 min
Cell towers, cells, and coverage areas
Learn how geographic areas are divided into cells, why towers are placed where they are, and what determines coverage.
interactive2 min
Frequency, bandwidth, and spectrum basics
Visualize how radio spectrum is sliced into frequency bands and why bandwidth directly affects data speed.
interactive3 min
1G to 2G to 3G to 4G to 5G at a glance
Watch the evolution of mobile generations — from analog voice to gigabit data — in an animated timeline.
interactive3 min
Quiz: Cellular basics
Test your understanding of cellular network fundamentals covered in this module.
quiz3 min
Radio Frequency Essentials
0/9Build a solid grasp of RF principles — from electromagnetic waves and propagation to antennas, MIMO, and link budgets.
What is RF and electromagnetic spectrum
Discover what radio frequency energy is, where it sits on the electromagnetic spectrum, and why it matters for telecom.
interactive2 min
Frequency bands used in telecom
Survey the key frequency bands — low-band, mid-band, and mmWave — and understand their trade-offs for coverage and capacity.
interactive3 min
Wavelength, frequency, and speed of light
Master the fundamental relationship between wavelength, frequency, and the speed of light with practical examples.
lab2 min
Signal propagation: path loss, fading, shadowing
See how radio signals weaken over distance, bounce off buildings, and fade through obstacles in an animated walkthrough.
simulation3 min
Decibels (dB) and dBm
Learn why engineers use logarithmic scales to express signal power and how to convert between dB, dBm, and watts.
interactive3 min
Antenna basics: gain, pattern, EIRP
Understand antenna gain, radiation patterns, and Effective Isotropic Radiated Power — the key metrics for any cell site.
interactive3 min
MIMO fundamentals
Visualize how Multiple-Input Multiple-Output antenna systems multiply capacity by using spatial streams.
interactive3 min
Lab: Calculate link budget for a cell site
Put theory into practice — compute a simplified link budget including transmit power, antenna gain, path loss, and receiver sensitivity.
lab5 min
Quiz: RF essentials
Validate your knowledge of RF fundamentals, propagation, antennas, and link budgets.
quiz3 min
Protocol & Networking Basics
0/9Get comfortable with the networking protocols that underpin every mobile network — from OSI layers and IP to GTP and telecom-specific signaling.
OSI model — 7 layers for telecom
Walk through all seven OSI layers with a telecom lens, seeing where each protocol fits in the mobile network stack.
interactive3 min
IP addressing and subnetting basics
Learn IPv4/IPv6 addressing, CIDR notation, and subnetting — the foundation of all data routing in mobile networks.
lab3 min
TCP vs UDP
Compare connection-oriented TCP with connectionless UDP through animated packet flows and see when each is used.
interactive2 min
DNS, DHCP, NAT
See how devices get IP addresses, resolve domain names, and share public IPs — essential services inside every mobile network.
interactive3 min
HTTP/2 and REST APIs — why 5G core uses them
Understand why the 5G Service-Based Architecture chose HTTP/2 and RESTful APIs over legacy telecom protocols.
interactive3 min
GTP — the backbone of mobile data
Follow a GTP tunnel from the base station through the core network and learn why tunneling is critical for mobility.
interactive3 min
SCTP and Diameter — signaling transport
Explore SCTP for reliable signaling delivery and the Diameter protocol used for authentication and policy in 4G/5G.
interactive2 min
Lab: Trace a packet from phone to internet
Follow a single data packet on its full journey — from your phone through radio, transport, core, and out to the internet.
lab5 min
Quiz: Protocols & networking
Test your grasp of networking fundamentals, telecom protocols, and the packet journey across the mobile network.
quiz3 min