ONT: A vital device in fibre-optic networks to get to digital services

February 9, 2026by admin

As connectivity undergoes evolutionary changes in most parts of the world and digital data becomes the new currency of our networked future, demands for faster and more reliable connections are growing by the day. But there works an intricate infrastructure to enable seamless data-transmission. Optical Network Terminal (ONT) is an integral constituent of fibre-optic infrastructure. An ONT is an effective way to harness internet in fibre-optic technology. It is a device that connects directly to an Internet Service Provider (ISP) to get the fibre-optic internet-connection in homes and offices. In fibre-optic technology, modems or routers can’t be used to get internet, an ONT or Optical Line Terminal (OLT) and a Fibre-router are must. Popularly known as Fibre Box, the ONT is an essential facet of the fibre-optic installation process, wherein it plays an interface between the fibre-network and the end-user’s premises or devices. The ONT receives the optical signal from the ISP’s fibre-optic network and converts it into data, which is used by the end-user’s devices. Its functionality includes signal-conversion, power-management and network-management. It can be used as the main network switch, which enables high-speed internet-connection for multiple connected devices. With the ONT-support, optical signals are less prone to interference and connections are more secure and consistent, facilitating an uninterrupted internet-access. Upgradation of the bandwidth is also easily possible for service-providers. The service-providers working for BharatNet, world’s largest rural broadband project, have set up Wi-Fi hotspots, connected to fibre-optic network with the support of ONTs.

Polycab Telecom, a division of Polycab India Ltd., is best-known for the delivery of major telecom infrastructure projects, with capabilities to roll out large telecom Infrastructure projects for both, Broadband and Wireless Networks. We’ve been regularly delivering our services for BharatNet, one of Govt. of India’s ambitious projects that is on course to connect every Indian village to opportunity-filled digital future. In BharatNet Phase-II, we achieved back-to-back timely completion of projects in Gujarat and Bihar, doing mostly Underground Cable Installation. Under Phase-II itself in Tamil Nadu, we’ve laid OFC-based network across nearly 13,920 kms, with almost 85% being aerial and the rest underground, as mandated by the TANFINET, a Special Purpose Vehicle (SPV) instituted by the state. Under BharatNet Phase-III, we’re already on our way to develop, upgrade, operate and maintain the middle-mile network in Karnataka, Goa and Puducherry under Package 4 and in Bihar under Package 7.