Hi Vanderley, I also have the same symptoms on my network like the ones explained by User_2010, but I checked the formula and it doesn’t contain SDCCH_Abis_fail_call in it. Here is the formula used.
100*sum(sdcch_radio_fail+sdcch_rf_old_ho+sdcch_user_act+sdcch_netw_act+sdcch_bcsu_reset+sdcch_bts_fail+sdcch_lapd_fail)/sum(sdcch_assign BSC Traffic+sdcch_ho_seiz).
can you please help?