The present paper provides some new stochastic inequalities for the
characteristics of the M/GI/1/n and GI/M/1/n loss queueing systems. These
stochastic inequalities are based on substantially deepen up- and
down-crossings analysis, and they are stronger than the known stochastic
inequalities obtained earlier. Specifically, for a class of GI/M/1/n queueing
system, two-side stochastic inequalities are obtained.Comment: 17 pages, 11pt To appear in Stochastic Analysis and Application