We are one of the voip providers in US.we provide voip softswitches(Billing and Routing system's),gateways and route.
24 hours 7 days tech support
24 hours 7 days configuration support
24 hours 7 days online training
100% uptime guarentee for the server
Quick trouble shooting response 24/7
Level 3 colocation for the server
if you are interested then you can contact me on my MSN id