M/Moo(infinite no of servers (m-1) (m:+1y m+2 2 Pn or n= N is Poisson distributed! L=/p;W=1p;a=0;W=0 Many applicationsM/M/¥ (infinite no. of servers) … 0 1 2 m-1 m m+1 l l l l l l l 3m m 2m (m-1)m mm (m+1}m (m+2)m … 0,1, 2,..... ! ( ) ( ) = × = - for n n e P n n m l m l • N is Poisson distributed! • L = l / m ; W = 1 / m ; Lq = 0; Wq = 0 • Many applications