OKI C3200n Led Printer "waste toner box needed soon" Questions

...waste toner box replaced soon" What does it mean and where is the waste toner box in the copier machine? Your machine catch's excess toner and puts it in a container and needs you to replace/empty it ...

Waste Toner Cartridge too. If the belt needs replacing then that will need replacing soon after as in this machine both are rated to 50,000 pages.. The Transfer Belt us BU200, the Waste Toner is WT200