Huawei WD22GTMUB OptiX OSN Telecom System Card / Module

The Huawei WD22GTMUB is a GTMU (GSM Transmission, timing and Management Unit) main control board for the BBU3900 and BBU3910 baseband units used in the BTS3900 GSM base station. The GTMU controls and manages the entire base station, handling fault, configuration, performance and security management and monitoring the fans and power modules. It generates and distributes the base station’s reference clock in GSM mode, and provides the transmission interfaces to the transport network, one electrical and one optical FE port plus four E1/T1 carriers, together with the CPRI ports that connect the BBU to the radio frequency units (RFUs). The board is mandatory in the BBU and occupies the main control slot. Supplied refurbished, the WD22GTMUB is a reliable spare for GSM BTS3900 sites still in service. Pricing is available on request.