Possible nax line speed at 58 dB noise margin of 11.1 dB

[McClaw]

Hi Guys

Just over a month ago our overhead telkom lines where stolen.

After spending a whole bunch of money digging a trench, telkom put a new UG line in, and our loop to the exchange is now about 500m shorter. (was 6.5Km)

Before the line theft I was able to maintain a constant sync of 2048 Kbps at between 6 and 8 Noise margin. (at line attenuation of 62 dB) [using a netgear DGN2200]

I am currently getting a steady 11.1 dB to 11.4 dB Noise margin at 58 dB.

Do you guys think I'll be able to upgrade to 4Mb?

 

[km2]

Going to guess probably not, since 6km is still mighty far from the exchange, but maybe you can get it up to 3Mbps.

http://www.coolwebhome.co.uk/calc/calculator.php?param=BP0E49o8lCo4x446IoEXbDI9II6uaBKeDlaUMb7oQJk%3D

 

[ponder]

Contact TelkomZA in this thread http://mybroadband.co.za/vb/showthread.php/544781-TelkomZA/page9 and ask if you could test a 4Mb/s profile on your line for a short duration just to verify if it will work.

 

[RudderVator]

At this moment in time it will be impossible to get a stable sync with 4 mbps
Your SNR is simply too low already at 2 mbps.
Not to mention your line noise of 58db that is incredibly bad.
On most modems you will need an SNR of at least 6db to be able to have a stable connection.

The only thing i can suggest you do since you already replaced your line between you and the exchange and with a distance of 6Km you won't really get anything better out of your line.
Is that you can try a different modem especially if your modem is a few years old.
When i replaced my old billion 5102G modem that was about 7 years old with a new TP-Link W8968 my downstream SNR jumped up from 17db to 26db!
It didn't make a difference to my line noise but if you can squeeze out an extra 5-7db of SNR you might be able to get 4mbps.