A generic acronym for Fiber To The X – a broadband network that uses optical fiber to provide all or part of the local loop used for the ‘last mile’ connection to the customer. X can be H – home, N – neighborhood, D – desktop, N – to the street cabinet or node, C – cabinet, P – premises, etc. Fiber can typically operate over quite long distances – typically 10 km or more, capable of delivering digital services, often broadband internet, at speeds of 1 Gb/s or more. However, the internet provider may well not be delivering the service at such a high speed.

See also: G.fast