I've try this on the previous setting it work (last 1 month) but It doesn't working now. Any idea how? It's seem like the modem is connected to TM DSLAM but doesn't login (I've provided a correct username and password, the link led is up and the data doesn't show a green light).

but It's still working if I using it as bridged (setup a dialler for it). Any idea how to ask the modem to login to TMNET? why the bridged work and the PPoE doesn't work? any idea??