Course Duration


Course Objectives

With advancement of network development and increasing number of 3G/4G subscribers, operator’s revenue is facing intense pressure and International Roaming can be a significant source of revenue for the telecom operators. Roaming can expand their scope and help enhance their competitiveness, by improving subscriber satisfaction and loyalty, and attracting new subscribers. In addition, operators can increase revenue by providing services to subscribers served by other international operators.

This 5-day course offers an extensive knowledge on the technique and the business of International Roaming as well as its voice traffic analysis and ensure that all of the parties involved in the management and protection of roaming revenues understand their role and possess a clear framework.

After successful completion of this 5-day workshop participants will be able to

  • Understand International traffic management and roaming as business opportunities and learn on how to deal with necessary SLA.
  • Improve the planning and process of International Roaming.
  • Rethink the roaming strategy and know how to support it operationally.
  • Learn specific traffic cases, explanation of architecture supporting different roaming scenarios, analysis of protocols.
  • Understand SS7 Network along with GSM/3G/4G concepts and SIP Signaling.

Target Audience

This course is specially designed for professionals of mobile network operators, who need to understand the principles of roaming and roaming signaling in mobile networks. Telecommunications managers and personnel responsible for international traffic, roaming, commercial arrangements and settlements can also attend this workshop.

Course Curriculum

Module 1: Overview of Telecom Network
  • Mobile Communication
  • Evolution of Mobile Communication
  • GSM Network and its Architecture
  • GSM Network Components
  • GSM Protocols
  • 2G/3G End User Main Identities.
  • GERAN Nodes
  • UTRAN Nodes
  • LTE Network
  • IMS Networking and Architecture
Module 2: Introduction to Roaming
  • Mobile Roaming Explained
  • How Mobile Roaming Works
  • Type of Roaming: Voice, SMS, Data
  • Data Roaming
  • Inbound and Outbound Roaming
Module 3: Roaming Commercials
  • Impact of current trends on the international traffic market
  • The international wholesale market and its future
  • Regulation of Roaming Services

Course Curriculum

Module 4: Network Procedures
  • GSM Numbering Plan
  • GSM Mobile Service Management
  • GSM Security Management
  • GSM Call Flow
  • Call Setup (Monolithic MSC).
  • Call Setup (Split Architecture).
  • GSM Service Flow Analysis (Voice and Data)
  • Overview of 3G/4G Networks and MSS Nodes
  • MSC Server and MGW
  • GSM SMS Theory
  • SMS in Roaming Networks
Module 5: Signaling System No.7
  • Overview of SS7
  • SS7 Protocol Stack
  • ISUP Signaling
  • SCCP Basics and Routing.
  • SCCP Functional Structure
  • SCCP Connection-oriented Service.
  • SCCP Message Parameters.
  • SCCP Address Component.
  • Global Title Translation (GTT) – Routing
  • Mobile Application Part (MAP).
  • MAP – Context and Coding.
  • General Mobile Application Part (MAP) Structure.
  • SS7 Call and Media Gateway Control
  • 3G call flows
  • 4G call flows

Course Curriculum

Module 6: Case Study: GT Analysis
Module 7: Case Study: MAP Signal Traces Analysis
Module 8: Session Initiation Protocol (SIP) and CAMEL Roaming
  • SIP Basics and SIP Multimedia Session setup
  • SIP Signaling and Call Flow
  • CAMEL Signaling in Roaming Networks
Module 9: Case Study: Analyzing a SIP call (Using Wireshark Tracer)

Course Curriculum

Module 10: International Roaming
  • LTE Roaming
  • International Roaming
  • Roaming Traffic of Operator Revenue
  • Roaming Contracts between Operators
  • Network Implementation
  • HLR and SCCP Connections
  • Establishing International Roaming
  • IREG and TADIG Testing
  • Process Flow of International Roaming
  • Analysis of International Roaming Call Flow (Voice, SMS & GPRS)
  • Roaming for MVNO
Module 11: Charging in Roaming
  • Charging Principles
  • International Roaming Billing (CDR flows and TAP creation)
  • The Role of DCH and FCH in roaming
  • Convergence Billing on postpaid/prepaid roaming
  • Prepaid Roaming including call flows
  • Transferred Account Procedure
Module 12: Troubleshooting in International Roaming
  • Troubleshooting concepts in International Roaming
  • Roaming Fraud and Disputes
  • Location Updates Error Codes and its impact on Roaming
  • Local Breakout (LBO)

Course Curriculum

Module 13: Case Study: Sample CAMEL Traces
Module 14: Roaming Steering (SOR)
  • How it Works
  • Steering of Roaming Features
  • Blacklist
  • Network barring
  • Disable SOR
  • Roaming Anti-steering
Module 15: Roaming VAS Solutions
  • Virtual Home Environment (VHE)
  • Short Codes
  • Voicemail Tromboning
  • Welcome SMS

Public Schedule

Training Date
Workshop on Roaming and International Voice Traffic 5 Days 14th October - 18th October, 2019 Singapore
Workshop on Roaming and International Voice Traffic 5 Days 17th November - 21st November, 2019 Dubai, UAE



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