Source: https://www.proximus.be/dam/jcr:1d49da94-13e7-4608-8f3e-7a13a97ca284/cdn/sites/iportal/documents/pdfs/sme/Raccordement-d-immeuble---appartements-dans-une-zone-o--la-fibre-optique-est-pr-sente-.pdf~2017-10-11-13-25-43~cache.PDF