Network: Any physical infrastructure network that forms a telecom-related network and occupies physical space in/on the ground.
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Openreach G.fast network. Openreach demonstrated G.fast in June 2017; commercial rollout began with 40 locations by June 2018, offering up to 330Mbps over hybrid copper-fibre (Source), (Source).
BT sells broadband over Openreach G.fast where available. Openreach demonstrated G.fast in June 2017; commercial rollout began with 40 locations by June 2018 (Source), (Source).