Openserve, a subsidiary of the Telkom Group, is South Africa's largest telecommunications infrastructure provider.

Deutsche Telekom (DT) is one of the largest telecommunications providers in Europe.

Sunrise Communications AG is a prominent telecommunications company providing mobile and fixed-network services under its own brand as well as through various mobile communications providers.

Vodafone Italy operates across several domains, including mobile and fixed subscribers, IoT, TV services, and extensive fiber networks.

Schweizerische Bundesbahnen (SBB), or Swiss Railways, operates one of the world’s most sophisticated and busiest railway networks, with a train passing on average every 7 minutes.

Nokia Mediation offers modern billing mediation for digital telcos.