Source: https://www.proximus.be/dam/jcr:289e76e8-32e0-49fd-8bf6-54bc98606a60/cdn/sites/iportal/documents/pdfs/res/contractfiche/contractfiche-en/Pack-business-customers/CS_Pack_BusinessFlex_CallConnect_EN~2021-07-15-09-12-34~cache.pdf