For traffic balancing using HO DCS - DCS / GSM - GSM : means same layer, you can using PBGT HO parameter DCS - GSM / GSM - DCS : means different layer, you can using interlayer HO relat ed parameter (i attach MML command doc for your reference) or you may set CRO for DCS bigger than GSM to attract more traffic to DCS and re duce ping-pong HO, or you can enable LOADHOEN parameter to 'yes' for traffic load-sharing handover. all parameter related you can find on the attachment. _____________ The same layer of Cell, you can optimize with PBGT HO Threshold, CRO or load han dover support parameters but difference layer cell G9 and G18 you can use InterLayer HO Threshold & EDGE DL HO Threshold Inter-Layer HO Threshold:30 EDGE DL HO Threshold:25 Inter-Layer HO Hysteresis:3 1- When G18 stand for Serving Cell -RxLev of GSM1800 lower than-83dBm will HO to GSM900 trigger by EDGE HO=-85dBm 2- When G18 satnd for Neighbor -RxLev of GSM1800 greater than-77dBm, GSM9000 Can HO to GSM18000 trigger by Inte r-Layer HO ______________________________ Depending on your settings, retuning some parameters among the below listed may help you achieve the desired Traffic Balance; CRO Load HO Allowed Load HO Threshold Inter-layer HO Threshold REXLEV_ACCESS_MIN Tch Traffic busy Threshold(%) AMR TCH/H Prior Cell Load Threshold Edge HO UL RX_LEV Threshold Edge HO DL RX_LEV Threshold AMR DL RX_LEV Upper Threshold AMR DL RX_LEV Lower Threshold AMR UL RX_LEV Upper Threshold AMR UL RX_LEV Lower Threshold DL RX_LEV Upper Threshold DL RX_LEV Lower Threshold UL RX_LEV Upper Threshold UL RX_LEV Lower Threshold UL Expected Level at HO Access _____________________________________