- Tech News & Insight
- November 14, 2025
- Hema Kadia
CAFโs signalling division and Cellnex demonstrated that OPTIO, a modular and multi-bearer CBTC platform, operates reliably on a private 5G network in both lab and field conditions, including challenging scenarios such as tunnels. The system already supports WiโFi and LTE; adding 5G confirms a multi-access design that lets operators choose



