hmm, technician just came to check my line
says cannot support 4mbps, even cannot support 2mbps, because
SNR: 12.0db (must be > 15db)
Attenuation: 45.5db (must be < 40d)
nothing i can do about it, unless telekom upgrades the lines here -__-

but funny leh, my line is already capped at 2mbps (1mbps package) and can download at about 180kB/s.
is there really nothing i can do? or just wait for hsbb...