M/M/1/∞/∞

M/M/c/∞/∞

$P_0$

$1-\rho$

${\left[{\displaystyle \sum _{k=0}^{c-1}\frac{1}{k!}{\left(\frac{\lambda }{\mu }\right)}^k+\frac{1}{c!}\frac{1}{1-\rho }{\left(\frac{\lambda }{\mu }\right)}^c}\right]}^{-1}$

$P_n$

$\left(1-\rho \right){\rho }^n$

$\{\begin{array}{l}\frac{1}{n!}{\left(\frac{\lambda }{\mu }\right)}^n{P}_0\left(n\le c\right)\hfill \\ {\left[c!\left(1-\rho \right)\right]}^{-1}{\left(\frac{\lambda }{\mu }\right)}^n{P}_0\left(n>c\right)\hfill \end{array}$

$L_q$

$\frac{\rho \lambda }{\mu -\lambda }$

$\frac{{\left(c\rho \right)}^c\rho }{c!{\left(1-\rho \right)}^2}{P}_0$

$L_s$

$\frac{\lambda }{\mu -\lambda }$

$L_q+\frac{\lambda }{\mu }$

$W_q$

$\frac{\rho }{\mu -\lambda }$

$\frac{L_q}{\lambda }$

$W_s$

$\frac{1}{\mu -\lambda }$

$\frac{L_s}{\lambda }$