The high-level knowledge about the 2G/3G network structure, nodes, and procedures for various scenarios is highly recommended. For background knowledge, we recommend Apis GSM/UMTS/EPS System Overview.

Course content

Network introduction

  • Overview of 3GPP UMTS core network
  • Brief overview of functions of various nodes
  • Protocols used on different interfaces
  • 3GPP network evolution in different releases

Basics of SS7

  • Overview of Signalling System No. 7
  • SS7 protcols in fixed and mobile networks
  • Functions of Message Transfer Part
  • Functions of Signalling Connection Control Part

Transport: ATM & IP

  • Basic ATM concepts
  • Usage of AAL2 and AAL5 in 3GPP networks
  • Application of Signalling ATM Adaptation Layer
  • Basic IP concepts
  • Overview of transport protocols: UDP, TCP, SCTP
  • RTP and RTCP for real-time traffic transport

GTP-C version 1

  • GTP variants and versions
  • Location management procedures
  • Tunnel management procedures
  • Mobility management procedures
  • Path management procedures

Mobile Application Part

  • MAP interfaces in 3GPP networks
  • MAP operations for mobility, call handling, supplementary services management, recovery, etc.
  • MAP versions: handling and negotiation of application context names and versions


  • CAMEL phases in different 3GPP releases
  • Triggering of CAMEL call/session handling
  • CAMEL subscription information records, their types and parameters
  • Example CAMEL operations

H.248 – Gateway Control Protocol

  • Applications for H.248/MEGACO
  • The H.248 model: terminations, contexts, commands
  • H.248 packages
  • Transport of H.248 messages


  • Basic BICC concepts, messages, and procedures
  • Q.1970/Q.1990 tunnelling
  • Forward and backward through-connection
  • Overview of basic SIP protocol
  • SIP-I option for Nc interface
  • Session Description Protocol
  • SDP usage for Nb interface data flows

User data transfer

  • Nb interface user plane frame protocol
  • AMR and AMR-WB formats and transport
  • Transcoder-free and tandem-free operation
  • Tunnelling of packet-switched user data with GTP-U
  • Collapsed core network architecture: direct data transfer between GGSN and UTRAN

Signalling scenarios

  • A number of signalling scenarios is discussed and analysed step-by-step throughout the course, investigating individual messages and their parameters:
  • Call setup variations, using ISUP, BICC, SIP-I, and CAMEL
  • Mobility scenarios using MAP
  • PDP context handling using GTP

Duration: 3 days


Classroom training: € 2410

Virtual classroom training: € 1680

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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