Abstract: In this paper, first-come, first served, multiple channel Poisson/exponential queueing system M / M / c with infinite waiting capacity is considered. For this model, we introduce a new procedure for construction of i) Shewhart’s control chart C1, ii) Control chart C3 for random queue length N using the method on skewness suggested by Shore(2000) and the control charts C1 and C3 are compared.