The article deals with the queueing system of GI /G /1 type with individual service and batch arrival of customers. The method of integral equations on a half-axis [0, ∞) is applied to obtain new results for the actual waiting time w n of nth arriving customer. The transient and steady state as n tends to infinity are considered. Some simplifications and numerical results for M /M /1, M /E 2 /1, and M 2 /M /1 queueing systems are derived as well.