How can i get a VOIP soft switch ?

We terminate call from middle East to Bangladesh, i'm asking for a total solution for my dealear and reseller and also for end user , from where our clients will check balance ,IVR ,calls details , and can recharge by themselves,|||You can find at this site http://www.download.com/3120-20_4-0.html鈥?/a> different prices and types.