if you test speedtest can get 4Mbps...should be OK already...

not all 720p youtube can watch and stream smoothly...

try watching gangnam MTV and let me know if 720p is smooth to you...

i know for my case...not all 720p clip works...but confirm gangnam can watch 720p consistently because i watched it many times already...hehehe...

guys wanna ask.

anyone using xunlei offline here?

I'm planning to upgrade to 4mbps streamyx.

will it reach to the speed of 4mbps for download?

so far I'm using 1mb and it can still reach 100kbps or more for download.

The downstream SNR look good. This is capture on day time, or night time?
Should be while internet running good? U might want to capture it night time... mostly internet SNR got affected at night.

Also, your modem SNR value is changing, or constant? Some modem just show initial value, and never changing... the SNR value actually is constantly up/down... if you have a modem that show SNR value up/down, it more easy to debug.

Your SNR and Line Attenuation look good. If the value continue to stay at this, it should be fine.
Would it be Telekom side port / hardware problem?  Anyway, do your TPLink modem SNR value change from time to time to reflect the real SNR value? Not all modem support this, some modem only capture the value 1 time, and display that value forever although in real case it fluctuate. If your modem with real time SNR value display, it more easy to root-cause ur problem.

Wired? Wireless?

That baffles me, different router used, SNR margin is near perfect, wired. 
Ask technician come?

No problem in PG. Look good recently, after they fix the northern region exchange server issue.

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Added on December 7, 2012, 12:00 am

Your dc issue happen in night only? Can you try at day time? Just want to confirm is TM side problem, or your problem. If in day time (9am - 4pm) your streamyx is okay and no DC, and the DC happen in night time only, this would tell is electrical noise issue that causing the DC.

Check your route of telephone cable, from back of your house (for terrace, normally come from back) till the port. Is the phone line cross any electrical line, or power line. If yes, that electrical line always got ON at night only? When you keep facing DC, try off that particular electrical device and restart your modem, and monitor whether it DC again.....

Hope this help...  By the way, if possible, avoid the phone line cross any electrical power line. It induce noise.

Try observed another few day, not sure it due to TM service their gateway/exchange.
Anyway, previously I did faced the DC/slow issue, but after I re-route my phone line, all DC issue gone. Turn on modem for 1 week and no restart totally no problem... Speed also constant, except for TM issue where it impact all users...

You recognize all those 5 devices?

Try observed another few day, not sure it due to TM service their gateway/exchange.
Anyway, previously I did faced the DC/slow issue, but after I re-route my phone line, all DC issue gone. Turn on modem for 1 week and no restart totally no problem... Speed also constant, except for TM issue where it impact all users...

Cool, your problem solve!
One thing, why the cable burn but it only DC in certain fix time....

As long as the problem not come again, it consider solve and can enjoy your 4mbps lo.
ADSL technology is like that, noise and cable quality issue affect the speed. Actually ADSL can go up to 10mbps, but I guess telekom not dare to roll out, as will let people complaint till pengsan.

Some other country they offer service base on data quota, so the speed they give max to user.

This is the reason why telekom push for fiber to home, Unifi. As fiber optic once setup, it will consistent and no intermittent / noise issue. Anyway, I wait for Unifi come to my taman... argh...

Their issue at the DSLAM maybe

Did your neighbour encounter this problem ?

I think you can go for Cfm for your issue now

Anyway, did you use a proper wiring, splitter and etc

What is your ADSL quality in SNR and attenuation