How to connect my CCTV DVR to my RADMAX RAD 400 wireless modem

I have a CCTV DVR with ststic IP set on it. I want to connect this to my wireless router radmax rad 400.

ststic ip on DVR is 192.168.2.5, Subnet mask 255.255.255.0, Default gateway 192.168.2.4
Web port on DVR is 80

On My wireless router
IP address is 192.168.2.1
Subnet mask 255.255.255.0
Default gateway 192.168.2.4
Web port is 80

All my computer systems connecting through wireless router are not able to connect to DVR.

All systems which are connected direclt through LAN ie without wireless router are connecting to DVR