Let’s put the whole thing in equation to make the concept more clear.
Total Remoting object life time = LeaseTime + (Number of method calls) X
If we take NumberOfMethodCalls as one.
Then default Remote Object Life Time = 5 + (1) X 2 = 10 minutes (Everything is in minutes)
“LeaseManagerPollTime” defines the time the sponsor has to return a leasetime extension.