This article explains How to Configure PPPoE Connection in Tenda FH303 Wireless Router. Its management IP is 192.168.0.1.
Step 1 : Log in Tenda FH303 wireless router
Password : admin
Tips: The default wireless security key is "12345678".
Step 2 : PPPoE Setting on Tenda FH303 router
Internet Connection Setup -> Click "Advanced".
Advanced -> Internet Connection Setup
There are 6 ways to install the Internet: PPPoE, Static IP, DHCP, PPTP, L2TP, PPPoE Dual Access. Usually we choose PPPoE.
PPPoE Username and PPPoE Password are both provided by your ISP.
Click the "OK" button to save your settings.
Now, you should be able to connect to the Internet normally.