You can monitor VSWR of cell through the VSWR’s threshold that defined in each cell
There are 2 case alarm of VSWR: Alarm Normal, Urgent. If Normal, nothing happen. But Urgent, cell will be offaired.
But this alarm depend on BTS system, according to me, this not true
Measure by Site master is the best way to define VSWR
You can ask ur vendor for this parameter in ur system, due to different interface in each BSS system. Note: should put 1.2 value in normal alarm ^^