Hi Suresh
1.You can cange each n every POC parameter.Its rather better to stick to the recomended values.
2.The DL PDCH can carry maximum 16 TBF’s & the UL PDCH can carry maximum7 TBF’s
3.RTT is measured as the time between request to request establish complete.
4.Yes,these parameters will help for sure.
Br\\
Bijoy