Yes We Can !
One BTS can be configured with different capacities.
It depends how many TRX modules are installed in the BTS cabinet.
1 TRX = (in average) 7 voice calls at the same time.
One BTS can accommodate, depending on which vendor you’re using, at maximum between 12 and 24 TRX.
So, one BTS can carry between 8×12 to 8×24 calls at the same time.
Multiply those values by 2 if you are using Half Rate codec. (1 TRX can carry 14 half-rate voice calls)