ADSL connection problem, bad ADSL signal, no phone signal

Do you have a problem with a stable ADSL connection with TOT, TT&T, 3BB or whatever Internet Service Provider in Phuket / Thailand?

Here is what you should check first:

Do you have a proper phone line from outside your house in to the house, than here is usually the bottle neck of the signal?!

Usually you have a signal display in the interface of your ADSL modem which shows you the SNR Margin and the Line Attenuation / Loop Att..

Here is the information what the SNR Margin and the Line Attenuation / Loop Att. should be to work fine.

If the signal is below (for SNR Margine) or above (for the Line Attenuation) you should definitely change first the phone line wiring in to your house and when this is done and there is still a problem, your ISP needs to check the phone line coming to your house!

SNR is Signal to Noise Ratio (aka Noise Margin or Signal to Noise Margin)

Relative strength of the DSL signal to Noise ratio.

6dB is the lowest dB manufactures specify for modem to be able to synch. In some instances interleaving can help raise the noise margin to an acceptable level.

The higher the number the better for this measurement.

6dB or below is bad and will experience no synch or intermittent synch problems
7dB-10dB is fair but does not leave much room for variances in conditions
11dB-20dB is good with no synch problems
20dB-28dB is excellent
29dB or above is outstanding

Loop Att. is Line Attenuation

Measure of how much the signal has degraded between the DSLAM and the modem.

Maximum signal loss recommendation is usually about 60dB. The lower the dB the better for this measurement.

20dB and below is outstanding
20dB-30dB is excellent
30dB-40dB is very good
40dB-50dB is good

50dB-60dB is poor and may experience connectivity issues
60dB or above is bad and will experience connectivity issues

Output Power

How much power modem (upstream) or DSLAM (downstream) is using. Maximum recommended is about 15dB.

The lower the power the better for this measurement.

Click here for the Wikipedia information about the Noise Margin (SNR Margine)

If you still have ADSL / Land line phone problems, just let us know and we will assist you to get the job done.

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