Course Overview

This two-day course will provide attendees with a full overview of the various aspects involved in launching and managing a VoLTE roaming relationship.

Day one will cover the adaptions to the roaming agreement, wholesale and retail charging, and TAP, as well as basic network architecture. Day two will focus on the more technical aspects of the roaming agreement, including SIP signalling, IMS, the IREG test process, and the issues most commonly encountered.

The course will be delivered over Microsoft Teams.

Key Learning Objectives

By the end of the course, attendees will:

  • Understand the VoLTE network architecture and the roaming call flow.
  • Know which amendments to make to the standard roaming agreements and RAEX documents.
  • Understand how VoLTE roaming is included in TAP.
  • Find out how the wholesale and retail model changes compare to legacy roaming.
  • Learn about SIP and IMS.
  • Understand the call flow of the IREG test cases.

Our Industry Experts

The course will be delivered by the following industry experts:

  • Milja Hofman, Roaming Specialist and Owner, Roamingwise
  • Joshua Odoteye, Technical Roaming Specialist, Roamingwise
  • Julia Gullstrand, Head of Roaming and Interconnection, GSMA

Who Should Attend This Course?

This course is suited for anyone involved in either the commercial or the technical aspects of the roaming business, including roaming managers, IREG testers, and TADIG testers.

Course Prerequisites

A basic understanding of the general international roaming processes will be useful.

Course Dates and Times

The course will be delivered over Microsoft Teams on 14-15 May 2025, 10:00-12:00 and 13:00-15:00 CET.

Course Fee

The course fee is US$1,999.

For group registrations, email [email protected].

Course Overview

This two-day course will give attendees an introduction to the international roaming industry.

On day one attendees will learn what steps they need to follow to establish an effective business relationship with a roaming partner, from signing the roaming agreement to the testing process to the Commercial Launch Letter (CLL). Day two will focus on the commercial aspects of roaming, including wholesale and retail pricing; the VoLTE roaming launch process and the challenges it poses; and fraud risks and how to minimize them.

The course will be delivered over Microsoft Teams.

Key Learning Objectives

By the end of the course, attendees will:

  • Have a general understanding of the international roaming industry.
  • Know how the roaming launch process works.
  • Understand the differences between a direct roaming relationship and a roaming hub.
  • Know how to calculate costs and margins for roaming services.
  • Have an understanding of VoLTE roaming.
  • Be aware of various roaming fraud risks and how to minimise them.

Our Industry Experts

The course will be delivered by the following industry experts:

  • Milja Hofman, Roaming Specialist and Owner, Roamingwise
  • Julia Gullstrand, Head of Roaming and Interconnection, GSMA

Who Should Attend This Course?

This course is suited for anyone who recently joined a roaming department as a roaming manager or roaming coordinator as well as any finance, fraud, IREG or TADIG professionals involved in roaming operations. MVNOs and IoT providers with an interest in establishing roaming relationships would also benefit from attending this course.

Course Dates and Times

The course will be delivered over Microsoft Teams on 10-11 November 2025, 10:00-12:00 and 13:00-15:00 CET.

Course Fee

The course fee is US$1,999.

For group registrations, email [email protected].

For any any queries about our course catalogue, please send us an enquiry