3,000 Links in Telco Network

When O2 Czech Republic (formerly Telefónica O2) sought a high-performance, future-proof microwave solution for its extensive telecom infrastructure, the stakes were high. The initial tender covered over 700 links across multiple frequency bands (10, 17 and 24 GHz) and required a solution that could seamlessly integrate with one of the most advanced networks in Central Europe.

Following a major restructuring, the O2 infrastructure was transferred to CETIN (Czech Telecommunications Infrastructure), which now operates the largest data network in the country, providing coverage to 99.6% of the Czech population. CETIN’s extensive network infrastructure is utilized by all three major Czech telecom operators — Vodafone, T-Mobile and O2 — as well as international ISPs such as Verizon and AT&T, facilitating connectivity for multinational corporations between their global and Czech-based operations.

The CETIN network includes:

• Nearly 6,000 base stations for mobile 5G and LTE
• A comprehensive combination of fixed infrastructure based on SDH, WDM, Ethernet and IP solutions designed to deliver high-speed, high-capacity connectivity
• Continuous growth driven by increasing demand for dependable last-mile connectivity and robust backhaul solutions, essential in a rapidly evolving digital landscape

Given this context, the challenge was clear: CETIN required a microwave solution capable of meeting extreme network demands, ensuring unparalleled reliability, enabling future network expansion and achieving this at highly competitive pricing.

With world-renowned microwave manufacturers competing for the contract, RACOM’s RAy microwave links went head-to-head against industry giants. After rigorous testing, RAy emerged as the clear winner.

According to Martin Králík, Director of NHK Solutions (RACOM’s local partner for the project), the choice was driven by:

• Unmatched sensitivity and interference resistance – Ensuring stability even in congested environments
• Extraordinary reliability and advanced diagnostics – Providing proactive maintenance capabilities
• Feature-rich design tailored for CETIN’s needs, including:
  • Optical and metallic user interfaces for flexible connectivity
  • Jumbo frame support for high-throughput applications
  • IP-TV optimized modem for seamless multimedia delivery
  • A broad range of DC power options for easy deployment

RAy microwave links were strategically deployed for last-mile corporate connections and as backhaul links supporting DSLAM nodes for ADSL (VDSL) connectivity. As a result, CETIN was able to:

• Extend its high-speed network coverage to more businesses and end-users
• Improve backhaul performance for critical network infrastructure
• Ensure seamless integration with major mobile and broadband providers, including O2, T-Mobile and other Tier 1 operators in the Czech Republic

The success of the initial contract led to CETIN extending its partnership with RACOM and NHK Solutions in 2017 for another three years and in 2020, the agreement was made indefinite — a testament to the trust and performance that RAy has delivered.

In 2024 CETIN took a proactive approach by adopting the new RAy3 in the 80 GHz band, offering 10 Gbps capacity with a large bandwidth reserve for future growth. This high-capacity solution is now being deployed almost exclusively for key network expansions, ensuring that CETIN remains ahead of the curve in delivering ultra-fast, scalable and future-proof connectivity. With RAy3-80 GHz, CETIN is not just meeting today’s network demands — it’s building the backbone for tomorrow’s digital landscape.

As of late 2024, over 3,000 RAy links have been delivered to CETIN, becoming a critical part of its infrastructure and supporting some of the most advanced telecommunications services in the country. With continuous innovation and long-term reliability, RAy has not only won the contract — it has secured its place as the backbone of one of Central Europe’s most advanced networks.

From tender victory to long-term trust — RAy continues to power the Czech Republic’s digital future.