here are parameters as declared in OMC-R for TFO feature for the cell with high Inc_HO_Cong
FORCE_TFO_HR_WHEN_LOADED=TFO HR preferred
KEEP_CODEC_HO=try to maintain codec for TFO calls only
There is no TRX declared as Half Rate. I think maybe the pb was for incomming calls wich were half rate, force_tfo_hr_when_loaded is tfo_hr_preferred, then, en_tfo_match is disable, so, from hr to fr couldn’t match the codec and somehow it is counted as congestion. After I disabled TFO (en_tfo=disable) the congestion was decreased. But still not sure that tfo caused all this, it should be failure, not congestion. Thnx.