million voice lines over the past five years. We completely phased out our PSTN network. At the same time we have modernized our core network by continuing the roll out of our Simplified Backbone Optical network (SIMBA) increasing our core-network capacity by factor 10. As a consequence, this year we vacated three buildings and sold our premises in Antwerp, leading to an incremental total of 14 phased-out buildings in addition to 19 building sold over the past five years.
IT & process simplification The redesign of the IT architecture is accompanied by the redesign of the processes to improve First Time Right and maximize efficiency gains. For example, the new mass market IT systems have drastically simplified the selling & ordering systems at Proximus. We are also simplifying our billing systems with the migration of mass market customers to a single platform.
energy in 4G antenna by activating Green ICT functionalities
switches phased out
3,400,000 voice lines migrated
Proximus Group Annual report 2017