VOS3000 Dialer call test, No Voice! One way audio! VOS3000 pin call no audio!

Hello all, Many of our client ask and face this issue. Actually the main issue is (if you dont have any blockage issue in your country ) vos3000 softswitch emp service. Normaly VOS3000 older versions like, or works mainly Centos 5.X – 32 bit. But most of datacenter not support this versions anymore, so what people do they simply install at centos 6.x – 32 bit.