Communication of data by means of telecommunications; Data transmission services over telecommunications networks; Digital network telecommunications services; Fibre optic telecommunications services; Hire of telecommunications installations; Operation of telecommunications systems; Operation of wide-band telecommunications networks; Optical fibre telecommunications services; Providing telecommunications connections to a global computer network; Provision of telecommunication facilities; Switching network services (telecommunications); Telecommunications; Telecommunications routing and junction services; Communications services for the exchange of data in electronic form; Electronic data exchange services