R in M/M/1 For M/M/1,we already know that ·So,R for M/M/1is: x=X=2 2 R= 2 Why it is not equal to 1/u,given the PASTA property? R(t) residual service time X3 t X2 Weigiang Sun Communication Networks 8Weiqiang Sun Communication Networks R in M/M/1 • For M/M/1, we already know that 8 2 2 1 2 X X ;     • So, R for M/M/1 is: 2 2 1 2 Xi R          • Why it is not equal to 1/μ, given the PASTA property? R(t) residual service time t X1 X1 X2 X3 X4 X2 X3 X4