TN51AUX is a system auxiliary interface board applied to Huawei OSN8800 T32 and OSN8800 T64. TN51AUX part number is 03020JUL, some other version like TN11, TN12, TN16, TN21, TN22 and TN52 with different system compatibility and feature supported. TN51AUX have only one feature code 01 It enables flexible coverage along railway lines, especially tunnels and bridges. It consists of a Baseband Unit (BBU) and a number of Remote Radio Units (RRUs). .High quality HUAWEI WD2DUBBPE200 03057153 UBBPe2 Universal Baseband Processing Unit e2 for Huawei BTS DBS BBU3900 BBU3910 BBU5900.All these are provided at the best possible price.