Refer first your e-mail you tell me that about requirement you need to connect CCTV DVR with 3G router and see you cameras when away from outside local area network?
I would like to advise you about the requirement you must have WAN IP (Public IP) form your ISP first. I saw your WAN IP Address is 10.193.180.55 this is a Private IP.
Because of the present mobile ISP in Thailand always give customer Private IP which can't use for connect CCTV DVR form outside.
Please you contact your ISP about WAN IP first. If your ISP can give you Public IP then you can use Archer MR200 for success your requirement. If ISP can't give you public IP ,then we will not have the way to success your requirement.