the MS power transmit is not changing during ongoing call and the value is 5dbm. .

    RXL-FULL-dl:  -47 dBm, RXL-SUB-dl:  -47 dBm RXQ-FULL-dl: 0, RXQ-SUB-dl: 0

    RXL-FULL-ul:  -47 dBm, RXL-SUB-ul:  -47 dBm RXQ-FULL-ul: 0, RXQ-SUB-ul: 0

uplink-power-target -75

Well, As long as you are getting -47dB on the UL, and the UL power target is -75dB  the MS is not going to be instructed to increase TX power.

ms max power is the max power the MS uses for initial access to the cell. After that, the power control kicks in and tells tells the MS to drop down.

Put some serious attenuation on your UL (or put your MS in a tinfoil bag or something, so that you get less than your uplink-power-target and see if MS power increases on your show lchan (or better - configure the meas-feed and use meas-vis or try using this: https://gitlab.tic-ac.org/keith/meas_web