BF-TR950 is a carrier level DMR Trunking base station designed with unit module, featured enhanced extensibility and rich functions. It supports failure fallback mode, inter-site call handling, whole site backup, and allows backup station to automatically take over to deliver enhanced reliability. BF-TR950 incorporates a perfect backup mechanism for key components of base station-controller, carrier, power supply, etc. Besides, it can also allow an online main module change to sustain long time