Could someone pls help me, I wanna create a simulated model of a VOIP network,I wanna carry out a performance evaluation of ATM vs SIP and H.323in VOIP networks using NS 2.To this effect I wanna design a VOIP network using ATM backbone so I wanna know if I can use NS to design the ATM protocol for VOIP networks and if not NS,pls does anyone know what I can use to to that?Thanks
