Hi! I have two vendors Huawei (2G,3G,4G) and Ericsson (2G,4G).
So the problem is: CSFB is very slow from any vendor and if CSFB is succesfull after call end fastreturn takes about 10-15 seconds from 2G to LTE, and about 7 seconds from 3G to LTE. It doesn’t matter which vendor the CSFB worked from, the Fast Return will still be very long.
On 2G E/// Fastreturn is activated
FAST RETURN TO LTE AFTER CALL RELEASE DATA CELL FASTRETLTE XXXXX ACTIVE RLEFC:CELL=XXXXX,ADD,EARFCN=XXXX,LISTTYPE=IDLE; RLESC:CELL=XXXXX,EARFCN=XXXX,MINCHBW=0,EMRR=1; RLSRC:CELL=XXXXX,EARFCN=XXXX,RATPRIO=6,HPRIOTHR=5,LPRIOTHR=22,QRXLEVMINE=13;
What can be the problem? I forgot to activate something, or I need to change thresholds?