NEC DS2000 4-Slot Cabinet from Phone Line
Click on picture for larger image.
The 4-Slot KSU provides universal PCB slots and the system's power supply. Up to 48 ports, (up to 24 trunks and up to 40 extensions, maximum combined 48). System mounts on the wall and has a flip-off cover and removable side panel for easy access.
First slot requires a 16DSTU PCB (Part. Nr. 80021A). Cabinet accepts either A or non-A PCBs series power supply. DS2000 is subject to "Load factors". You can check your configuration to ensure you have enough power supplies HERE.
When you purchase your NEC phone system from Phone Line, you can expect the best available service as well as the great price.