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Transmission Technologies

LTE International Roaming

Course Objectives:

After successful completion of this training, participants will be able to:

  • Understand the fundamentals of SS7 network, MTP3/M3UA based and GT based routing
  • Implement effective routings in SCCP-GT level in relation to International Roaming
  • Appreciate the different MAP protocols and related interfaces
  • Appreciate ISUP signaling and some call flows
  • Understand GSM/UMTS/LTE Concepts which includes Numbering Plan, Mobile Service Management and Security Management
  • Learn the basics of SIP signaling
  • Understand the requirements of International Roaming, including call flow analysis
  • Understand Roaming Networks, roaming types, network flow, its interconnections, analysis and troubleshooting
  • Learn the essentials of steering of roaming, and local break-out

Pre-Rrequisite for Participants:

A basic knowledge of Mobile Communication and basic SS7 Signaling will be required

Who Should Attend?

Managers, Engineers, or any Technical persons working in Core Networking, Billing, Interconnection, QoS, Switching, Roaming, VAS department.

Duration and Training Format

4-day instructor-led training.

Course Outlines:

  • Understanding Evolution of Mobile Communication (GSM to IMS Networks)
  • Overview of GSM Network/Components/GSM Interfaces/Protocols
  • GSM Numbering Plan, GSM Mobile Service Management, GSM Security Management
  • Overview of 3G/4G Networks/ MSS Nodes (MSC Server and MGW)
  • Introduction to Roaming Networks
  • Inbound and outbound Roaming
  • GSM Service Flow Analysis (Voice and Data)
  • Signaling System No. 7 Overview and ISUP Signaling
  • Fundamentals of SCCP Routing, GT Analysis
  • Understanding GSM MAP Signaling
  • 3G call flows
  • 4G call flows
  • Case Study: GT Analysis
  • Case Study: MAP Signal Traces Analysis
  • Basic GSM SMS Theory
  • Understand SMS in Roaming Networks (Inbound and Outbound Roaming)
  • Understand Basics of CAMEL Signaling in Roaming Networks
  • Introduction to LTE Roaming
  • Basic SIP Signaling and Call Flow
  • Case Study: Analyzing a SIP Call (Using Wireshark Tracer)
  • Understand International Roaming Implementation
  • Network Implementation (HLR & SCCP Connections)
  • Establishing International Roaming (Commercial, IREG, TADIG testing and documentation used such as AA.12, AA.13, AA.14, IR.21 and used test cases)
  • Understand Process Flow of International Roaming
  • Convergence Billing for postpaid and prepaid roaming
  • International Roaming Billing (CDR flows and TAP creation)
  • Understanding the Role of DCH and FCH in Roaming
  • Dealing on Fraud and Roaming Disputes
  • Analysis of International Roaming Call Flow (Voice, SMS & GPRS)
  • Understand Prepaid Roaming including call flows
  • Case Study: Sample CAMEL Traces
  • Understand Steering of Roaming (Method of Steering)
  • Steering of Roaming Features (blacklist, network barring, disable SOR)
  • Location Update Error Codes and its impact on Roaming
  • Understanding Local Breakout (LBO)
  • Troubleshooting concepts in International Roaming
  • Roaming value added services (VHE,short codes, Voice Mail tromboning)

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