Should I trust the router's "Attainable rate"?

[Kwerty]

Here's my router stats:

Mode: ADSL_2plus
Traffic Type: ATM
Status: Up
Link Power State: L0

Downstream Upstream
Line Coding(Trellis): On On
SNR Margin (0.1 dB): 102 116
Attenuation (0.1 dB): 480 275
Output Power (0.1 dBm): 75 26
Attainable Rate (Kbps): 6272 1032

Path 0 Path 1
Downstream Upstream Downstream Upstream
Rate (Kbps): 2048 511 0 0

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Here's some history:

I had a stable 4Mbit connection a year or two ago. Then Telkom enabled the 10Mbit speeds. I synched at 8Mbit but I DC'd quite frequently. I changed it to 6Mbit and all was well.

Then last year some time after some heavy rain the DSL lost synch again. I was in Stellenbosch at the time so my dad called Telkom and they set the synch profile to 2Mbit.

Now FFWD to a week ago. I replaced my Telkom router with a TP-Link TD-W8960N. My SNR margin has gone up quite a lot and I have read that these routers deal quite well with keeping synch at low margins.

My question is: Do you think that I'll be able to handle 4Mbit again? I read somewhere (I think it was Pada) that with each Mbit you increase you lose a couple of dB's.

Also, will reporting a line fault help with the losing of synch when it rains (only happens in very heavy rain) and also maybe improve my stats a bit?

Thanks

 

[agentrfr]

Realistically, you only need an SNR margin of about 6 for a stable connection. I've seen some guys push it all the way to 3 and still never DC, but at my house I run fine with an SNR margin of 6.1dB. So yeah, with your attenuation of 48dB a 6meg synch should be possible.

Reporting it to telkom won't make a difference unless your line is actually dead dead dead, no phone or very crackly voice. Try removing the ADSL from the POTS filter and have it plug directly into the socket, and see if it still desynchs. It might be the telephone that is the problem.

As far as the rain problem goes, ask a techie next time you see one closeby your house that you think that the splice connectors on the pole are rusted becuase when it rains you lose your ADSL. It is a quick fix and you might be lucky that he goes and does them. Ask your neighbours if the same thing happens to them when it rains. If it does then the splicings are probably rusted.

 

[FNfal]

First off if you were getting a stable 6 megs some thing must have changed .
Either the under ground cable has a fault on it or the drop wire from the pole to your place .Now the wire going to your place could be going through trees and eventually that will cause a fault by chaffing on the insulation on the cable and wearing through causing a partial short when it rains and eventually all the time.
Ask them to test your line they can see if there is a condition on your telephone line when you phone them.(not the ADSL the telephone line.)

 

[JohnJuniorV3]

My aunt on 8mb , snr is 4-5 and she has very stable connection! Checked her stats and shows she was connected for 14 days without disconnection! But I know sometime this past week she was connected to one of the MSAN 40mb exchange !! It's 30m away, ps it's not a fibre cabinet it's the actual thing! So when I visit I will check again!

 

[Kwerty]

Cool, thanks for the replies.