Cisco's family of 10-Gbps symmetrical passive optical network (XGS-PON) Optical Network Terminals (ONTs) delivers flexible, high-performance broadband connectivity for a wide range of fiber-to-the-premises use cases, including residential spaces, Multidwelling Units (MDUs), Small. Cisco's family of 10-Gbps symmetrical passive optical network (XGS-PON) Optical Network Terminals (ONTs) delivers flexible, high-performance broadband connectivity for a wide range of fiber-to-the-premises use cases, including residential spaces, Multidwelling Units (MDUs), Small. Cisco's family of 10-Gbps symmetrical passive optical network (XGS-PON) Optical Network Terminals (ONTs) delivers flexible, high-performance broadband connectivity for a wide range of fiber-to-the-premises use cases, including residential spaces, Multidwelling Units (MDUs), Small Office/Home Office. This white box connects to a fibre-optic cable that runs to your house and enables you to access our FTTP fibre network for broadband and voice. There are several lights on the ONT, when these lights change colour or flash, it means something is happening. What do the lights on the Openreach fibre. g FTTP subscribers. This solution is ideal for a range of applications, including service providers delivering multigigabit speeds with the flexibility of an SFP+ downlink interface, and wholesaler/service provider partnerships that benefit from the seamless separation of acces and home networks. An Optical Network Terminal (ONT), sometimes referred to as an Optical Network Unit (ONU), is a device that is placed at the customer's premises and securely connects the incoming fibre supply to their firewall or router. Need advice? Call. For broadband access, we have already mass-produced all mainstream, standard-rate optical network terminals in accordance with the latest industry standards.