Open The Web Browser and type 192.168.1.254 in browser address box
A user name and password window will appear the user name = admin and Password = password , (after modem reset to factory setting) i don't know why , i read from manual ebook original CD the default password = admin

WEB Configuration

Hardware Connecting
DSL Modem Billion
Bipac 5112s, modem from
telekom tmnet