Access router admin page with static IP

I have a static IP and can access my servers from the outside world by port mapping. For e.g.: A service running on the 192.168.1.98:8080, can be accessed by going to {Static_IP}:8080, if I have mapped 8080 of the 192.168.1.98 to 8080 external port.

The IP of my router is 192.168.1.1, now, when I want to access the router admin page, I map 192.168.1.1:80 to port 80 on the static IP(external port), but I cannot access the router admin page from the outside world. How can I do this?

My router is Huawei HG630a.

I came to know that for this, I need to enable remote management, but can't seem to find it in the admin page. 
Please help.