It accounts for the evolution from the voice centric GSM (2G) via the data traffic of GPRS and UMTS (3G) to the all-IP architecture in LTE (4G) and IMS as used for VoLTE. The course also introduces IoT and 5G. All topics are presented in a comprehensive – yet easily understandable – way. Essential principles, procedures, subsystems, nodes and protocols are described. Basic traffic cases are used to demonstrate the function and architecture of the different systems.


Technical education and/or at least one year of technical telecom experience is recommended.

3GPP Mobile System Overview

  • 2G, 3G and 4G – what is it all about and what’s the difference?
  • Circuit Switched vs Packet Switched services

GSM (2G) System Overview

  • Nodes and architecture of GSM
  • Terminals, Radio NW and Core: MS, BTS, BSC, MSC, VLR and HLR
  • Basic traffic cases; voice call setup and SMS
  • Mobility Management

The GSM Radio Interface

  • Time Division Multiple Access (TDMA)
  • Time slots, physical and logical channels
  • Radio Resource Management

General Principles in Mobile Networks

  • Radio Network vs Core Network responsibilities
  • User Identities
  • Registration / Attach
  • Security: authentication, encryption etc.
  • Cells, Areas, Mobility principles
  • Radio Resource Management
  • Control Plane vs User Plane

IP Introduction

  • IP networking principles
  • Routing, Switching
  • The TCP/IP protocol stack
  • IP addresses, DHCP, DNS

UMTS (3G) System Overview

  • Which are the 3G services?
  • Nodes and architecture of UMTS
  • UTRAN – the 3G Radio Access Network: Node B and RNC
  • Wideband-CDMA

Data over GPRS (2,5G) and UMTS (3G)

  • Nodes and architecture of the Packet Switched Core: SGSN and GGSN
  • Attach procedure
  • PDP Context Activation
  • Tunneling of user data for Mobile Broadband

LTE/EPS (4G) System Overview

  • 4G Services – all-IP
  • The Mobile Broadband Service
  • Nodes and Architecture of LTE
  • E-UTRAN – the 4G Radio Access Network: eNB
  • OFDM
  • EPC – the Evolved Packet Core: MME, SGW, PGW, HSS
  • QoS – Quality of Service
  • PDD Connection Setup and Data Transfer in LTE (Mobile Broadband)

Voice over IP using SIP

  • VoIP principles and services
  • OTT services vs Operator voice
  • SIP – the Session Initiation Protocol

IMS (the IP Multimedia Subsystem) and VoLTE

  • What is IMS and why do we need it?
  • Nodes and Architecture of IMS
  • Basic procedures: Registration and Invitation
  • The IMS Profile for VoLTE

Overview of 5G

  • What is new and different in 5G?
  • Virtualization, Network Slicing and Edge computing
  • The 5G System Architecture
  • 5G Use Cases: eMBB, URLLC and mMTC
  • Stand-Alone New Radio

Duration: 4 days


Classroom training: $2780

Virtual classroom training: $2780

Recorded training: $1950 Buy now

We offer substantial discounts for group bookings, and we have corporate rates with most of the operators and equipment suppliers in the world.

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