(Through the optimization of the previous stage, after the BSCs of CDBSC5B, CDBSC5, CDBSC3A, CDBSC3B, and CDBSC3E have been optimized, GSL resources have been used more rationally, and the high GSL usage rate of some BSCs has been alleviated to a certain extent; Some parameters have been optimized and verified, and some parameters have been significantly improved after optimization and adjustment. It is recommended to make reasonable optimization settings based on the actual network conditions in the entire network in the later stage.)