2G, 3G, 4G Course
This course provides comprehensive mastery of 2G, 3G, and 4G networks end-to-end. Delve into GSM, UMTS, LTE architecture, signalling, mobility, QoS, VoLTE, and multi-RAT interworking. Equip yourself to design, optimise, and troubleshoot real telecom networks with full confidence and expertise.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain a clear, practical understanding of 2G, 3G, and 4G mobile networks from end to end. Master identifiers, radio fundamentals, GSM, UMTS, LTE architectures, signalling flows, QoS, mobility, security, multi-RAT interworking, troubleshooting with traces, key 3GPP specs, and modernisation strategies for confident network design and optimisation.
Elevify advantages
Develop skills
- Master 2G/3G/4G call flows by tracing voice, SMS, and data end-to-end.
- Analyse GSM, UMTS, and LTE cores, mapping network elements, roles, and links.
- Decode signalling traces quickly, including NAS, S1AP, GTP, MAP, and ISUP.
- Plan multi-RAT modernisation, refarming spectrum, sizing capacity, and ensuring QoS.
- Troubleshoot KPIs swiftly, resolving drops, access failures, and throughput problems.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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