Thnks for responding.
I used my phone with the field test software.
e.g. On my phone i can see BCCH 115 and BSIC 47
And if i check on the BSC, then i see that there is a sector with the BCCH 115 neirby but with a different BSIC, the BSIC 47 and freq 115 belongs to a different cell in another city. I have checked several sectors, all with the same problem.
On my phone i have also seen a BSIC 49. How is that possible, i thought that the range is 00-77.