Cellusys and RoamsysNext Automate IR.21 Data Updates within Steering of Roaming System

Cellusys and RoamsysNext, two established leaders in the roaming industry, have joined forces to provide an automated configuration of the Cellusys Steering of Roaming system based on IR.21 data from the GSMA RAEX Tools solution. This ensures Cellusys customers the most accurate and efficient steering without the need for manual intervention when IR.21 data changes by their roaming partners, as well as an enhanced roaming experience for their subscribers.

RoamsysNext manages the GSMA RAEX Tools solution where the standardised IR.21 data is exchanged between MNOs. The IR.21 data includes architecture and routing specifications for each network which are crucial for steering configuration. For Cellusys customers that are also GSMA members, RoamsysNext can now automatically convert IR.21 data into the correct format to be implemented in the Cellusys Steering of Roaming System directly.

“With an ever-increasing strain on roaming resources, coupled with an increase in roaming complexity, operators must embrace automation. This collaboration between Cellusys and Roamsys is a significant step in this direction, greatly enhancing operational efficiency, accuracy and standardisation of roaming managements” emphasised Daniel McTague, CTO at Cellusys.


From October 16 to 19, RoamsysNext will be participating in WAS 18 in the beautiful city of Šibenik, Croatia, hosted by Infobip.
Johannes Kaiser, Priit Rohusaar, Adrian von Wendt and Lorena Chiappino are looking forward to meeting all our colleagues, customers, and friends at one of our favorite industry gatherings.
Additionally, we will share insights into the new Roaming Gateway and RAEX functionality during the workshops on Monday and Thursday.
See you soon!

As telecom professionals continue to work toward enhancing roaming services, the partnership between Cellusys and RoamsysNext is set to provide a solution which streamlines operations, ensures compliance and enhances the subscriber experience for both IPX providers and MNOs.

Improved automation and standardisation in roaming processes such as network configurations, IREG and TADIG testing are long overdue. Cellusys recently introduced an automated testing and launch tool that has garnered significant industry interest and is currently in the feedback and development stage. Collaboration between RoamsysNext and Cellusys aligns well with their shared goal of optimising inter-operator roaming processes and systems within the industry.

We are confident that this partnership will make a significant impact on the industry, showcasing our commitment to innovation and providing effective tools and solutions to Mobile Network Operators.

Michael Grasmück, CEO RoamsysNext


Cellusys Solutions, trusted by over 1 billion subscribers worldwide, empower CSPs with total signalling control in order to drive profitability. Our roaming and analytics solutions are 5G SA ready, and ensure unparalleled VoLTE roaming quality for subscribers. We specialise in interconnect signalling, delivering versatile, robust solutions for 5G, VoLTE, signalling security, anti-fraud, roaming, analytics, and IoT.

Recognized as the top Steering of Roaming provider as well as the #1 most trusted, reliable, and simple to work as rated by users, Cellusys Roaming is the preferred choice for many MNOs, carrier groups, and IPX providers.

“The team is a crucial asset”

It has been an exciting year for RoamsysNext. And as 2023 is coming to an end, we took the opportunity to talk with CEO Michael Grasmück about the past year, the growing team that becomes more and more international, and the comeback of an industry institution.

Reporting at a glance: The RoamsysNext Dashboards

The RoamsysNext tools offer many reporting functionalities of which the dasboards play an important role. Learn more about using them in practice to identify bottlenecks, visualize your team's performance and bring a smile to your management's faces.

Load More Posts