Hi Santos,
I got reply from ISP, it was configuration issue.
interface FastEthernet0/0
ip address X.X.X.X. 255.255.255.XXX secondary
ip address X.X.X.X 255.255.255.XXX
ip access-group 110 in -- Removed this line by ISP
ip access-group 110 out -- Remove this line by ISP
ip flow ingress
ip flow egress
duplex auto
Issue got resolved.
Many Thanks.