This review gives you some useful info near the bottom on how to telnet in & a list of commands.
(Except, at least on mine, it should be
"Click on Start > Run and type in: telnet 192.168.2.1 then press OK" rather than192.168.1.1)
"adsl connection --up" should then do what you want.
plusnet ADSLMax
Life is what happens while you're busy making other plans. (John Lennon)