But I have nothing in fs_cli

can't figure out why it did not reach freeswitch

I allow everything in iptables for PSTN ip address

add this ip to the access list under providers

mentax_: is FS running and listening on port 5060 within 192.168.2.3? If so, have you checked /var/log/messages to see if the requests are being blocked/dropped by the firewall?