Do you have weak mobile coverage in your office or car park? Does the connection drop out as soon as you enter a tunnel? Having well-insulated buildings and lots of people gathered together in one place sometimes means we don't have the same experience indoors as outdoors. Remarkably enough, 80 per cent of the expenditure on network optimisation is spent outdoors, whereas 80 per cent of mobile phone and data traffic takes place indoors. VolkerWessels Telecom ensures that walls no longer form an obstacle and that continuous coverage can be guaranteed within buildings.