If we want to create WiFi zone in home and office. you can configure step by step. we have got from ISP User Name and Password and now we can configure router.
Step1: open any browser and browse 192.168.0.1 and press user name= admin and Password=admin
click > internet setup > WAN Access Type= select PPPoE > User name= ait.zms.bd Password=123456 > OK
Step2: Click wireless > Enable SSSID > SSID=Black Dimond > Mode=bgn > Pre-shared key =dimondworld > OK
Now we can use WiFi.