The funding, the biggest-ever project finance deal for an optic fibre network in the EMEA region, is led by UniCredit, Societe Generale and BNP Paribas.

Open Fiber, jointly owned by CDP and utility Enel, also said its two shareholders would grant a maximum further 950 million euros.

Open Fiber is building a wholesale-only fast internet network across Italy which will rival the network of former phone monopolist Telecom Italia.

Italian politicians have called for closer ties between the two companies to avoid duplication and allow the companies to speed up investments.

(Reporting by Stephen Jewkes)