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To operate effectively and protect passengers and staff, rail operators need reliable, future-proof, secure network infrastructure. As the ERTMS agenda advances, railway communications must also be totally interoperable across international borders. Kapsch CarrierCom’s end-to-end Railway Dedicated Network, short RDN, solutions are based on and exceed the GSM-R standard. They support the entire range of railway voice and data communication requirements. Performance is guaranteed at speeds exceeding 500 km/h (310 mph) without any communication loss, ensuring the safety of passengers and staff. We have been designing, building, deploying and supporting end-to-end RDN solutions based on the GSM-R standard for more than 20 years. Today, we are the industry leader, providing communication for around 83,000 kilometres of railway tracks across Europe, Africa and Asia.

Are you looking to deploy or upgrade your GSM-R network? Contact our experts to find out more.

Key benefits of our GSM-R portfolio include:



We have the technology portfolio and skillsets needed to deliver entire RDN projects, giving operators a single point of contact and accountability, reducing complexity and costs.



We offer an industry leading product portfolio, exceeding GSM-R standards, including railway core, access and transmission infrastructure, management tools, applications and terminals.

Railway dedicated


We meet rail industry requirements for the solution lifecycle, supporting all of our railway communications solutions for 15 years or more.

Future proof


We help railway operators migrate to all-IP infrastructure over time, making it easier to adopt new technologies with software-based upgrades. Our portfolio also builds the bridge to the next generation with VC and SCP.



We invest nearly 15% of our annual revenues in R&D, enabling us to build innovative, world-class railway communications solutions for railway operators that already carry the next generation inside.

Safe and secure


Our railway communications solutions help to maximize passenger safety through extremely high availability for mission-critical voice and data services, compliant with EIRENE standards for emergency alerts.

Driving new standards


We work with the ERA, the UIC, 3GPP, ETSI, Shift2Rail, UNIFE and others to drive the next-generation of railway communications solutions innovations. All our solutions are ERTMS-compliant and ready for the introduction of ETCS over GPRS.



Our railway dedicated services teams have the experience railway operators need to achieve success, from analysis, consulting, design, integration, installation, and training, to the maintenance and operation of entire networks.

Successful GSM-R Interoperability testing

Here you can find the test plans and the test reports from GSM-R interoperability testing between Kapsch CarrierCom, Nokia and other GSM-R vendors performed in the TEN 3rd call Research Project, funded by European Commission and supervised by UIC and ERA.


Our GSM-R portfolio includes:


Our RDN.core for railways is built on the 3GPP Release 4 architecture, which offers the highest levels of reliability and safety. Because it is an all-IP solution, railway operators can also adopt emerging network technologies simply and cost effectively. Our R4 core architecture was the first to be successfully deployed in the railway environment and is to this day the industry’s most proven solution, operating in 15+ countries worldwide. At the same time, our RDN.core is future-proof and ready for the next generation.


The RDN.transmission solutions give operators advanced transport capabilities that cost-effectively support the full range of voice and data services. Our solutions are designed to support the migration from legacy SDH technologies to IP-based networks. They increase network capacity and performance.


Our portfolio of terminals offers native integration with your Kapsch GSM-R infrastructure, giving operators guaranteed interoperability. Our terminals include handhelds and smartphones for operational and shunting purposes, zero-touch maintenance voice and data radios and dispatchers.


Our RDN.access portfolio incorporates the full range of access components operators need, including our next-generation ready RDN.base station. It can replace up to six last-generation base stations, reducing hardware requirements by up to 80%. Our access equipment supports TDM and IP traffic and thus helps operators protect their existing infrastructure investments and embraces new technologies such as 4.5G and LTE when the time is right.


Going beyond the applications required by GSM-R, Kapsch CarrierCom supports a range of high-value railway applications, from shunting and departure ready messaging to lone worker applications that help protect members of staff. tools

To ensure that operator’s mission-critical networks are always available, we provide a range of management and monitoring tools that seamlessly integrate with our GSM-R portfolio and are running via private cloud infrastructure, distributing workloads across virtual machines.

We offer railway operators the knowledge and skills required to plan, build, maintain and operate next-generation railway infrastructure that exceeds GSM-R standards. With years of experience deploying GSM-R, our service teams can take full responsibility for end-to-end project delivery.

Forward to the future of railway communications:

Next Generation
Check out our transmission networks

Download our white paper.

Read more

Our success in action:






track kilometers



ETCS level 2 projects



high-speed lines