Source: https://www.proximus.be/dam/jcr:2961c683-f69d-4fed-abd0-0578877b6414/cdn/sites/iportal/documents/pdfs/res/contractfiche/contractfiche-en/Pack-business-customers/CS_Pack_BusinessFlexPremium_MultiLine_EN~2022-03-01-06-21-34~cache.pdf