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 28 and 29 May 2024, 10:00-12:00 and 13:00-15:00 CET.

Course Completion Certificate

To receive a course completion certificate, registered participants will need to attend the course and complete the course survey.

Course Fee

The course fee is US$1,999.

For group registrations, email [email protected].

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Duration: 2 days
Start date: 28 - 29 May 2024
$1,999.00 Per Participant

20% discount available for GSMA Members



Milja Hofman
Roaming Specialist and Owner, Roamingwise

Having twenty-three years of international roaming experience, Milja Hofman started her career with Telfort in The Netherlands as TADIG Tester and Product Manager International Roaming. After spending six years at the Data and Financial Clearing House MACH (now TOMIA) in Luxembourg, Milja started her own company Roamingwise in which she combines her enthusiasm for roaming, and training and consultancy. Her experience makes that Milja has a broad roaming knowledge which she uses in her current trainings and consultancy assignments.

Milja closely follows the GSMA working groups and teaches the GSMA standards. With Roamingwise Milja has supported many satisfied customers in the past thirteen years.



Julia Gullstrand
Head of Roaming and Interconnection, GSMA

Julia Gullstrand is a telecoms professional with 30 years’ experience in roaming and interconnection starting at UK mobile operator One2One. For the past 20+ years Julia has led the GSMA Working Group dedicated to developing agreement templates and charging models to enable the acceleration and rollout of mobile services worldwide. Julia holds an MBA in Telecoms from the Henley Management College.

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