Internet (connection) keeps dropping

[XeonRSA]

Okay so I've been having some problem with my internet lately. I've phoned both Telkom and my ISP (@lantic) but none of them have a solution for me, hoping you guys can help me out.

My internet keeps on dropping, by that I don't mean disconnecting. It stays connected (according to the router, Mega 200vwr), but yet there is no internet access. It started out only happening once or twice a day, but has now proceeded to happen every few minutes. As I said before, the router does not pick it up at all (all the lights stay on as usual).

I managed to run a cmd - ping test while this was happening

Pinging www.telkom.co.za [196.43.22.222] with 32 bytes of data:
Reply from 196.43.22.222: bytes=32 time=13ms TTL=243
Reply from 196.43.22.222: bytes=32 time=13ms TTL=243
Request timed out.
Reply from 196.43.22.222: bytes=32 time=14ms TTL=243
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Reply from 196.43.22.222: bytes=32 time=14ms TTL=243
Request timed out.
Request timed out.
Reply from 196.43.22.222: bytes=32 time=13ms TTL=243
Reply from 196.43.22.222: bytes=32 time=14ms TTL=243
Reply from 196.43.22.222: bytes=32 time=13ms TTL=243
Request timed out.
Reply from 196.43.22.222: bytes=32 time=23ms TTL=243
Reply from 196.43.22.222: bytes=32 time=14ms TTL=243

Can anyone please give me suggestions on what to do ?

Replacing the router is my last resort as I am currently broke

* I will try to give more detail if required.

 

[Pada]

Hi, could you log in on your modem's web interface and post your ADSL line stats here? The stats should include, line speed, noise/SNR margins and attenuation.

Secondly, try to post a trace route to www.telkom.co.za also, by running:
tracert www.telkom.co.za
from within the Command Prompt window.

 

[Dre21]

I have had this same issue yesterday... My line got upgraded to the 1mbps from the 384, but it wasnt syncing at 1mb

I called telkom to update my ADSL profile and reset the ports and it was syncing at 1mb and running fine, 20mins later it kept on dropping connection completely and would continue to do this every 10 mins or so, i called mweb and they told me there was a noise on the line of 47decibels, they told me to call telkom and ask them to redesign my line.

I did this and they redesigned it and also recreated the port, then i switched router back on and its still doing it and my noise margin is still very high 47decibels.. its really crap... my 384 was much more stable... doesnt help having a faster line if u can only use it a couple of minutes at a time....

 

[Pada]

Dre21:
47dB line attenuation isn't even that high. Perhaps you should try another ADSL modem (eg. D-Link DSL-2500U) or ask Telkom to downgrade your line to 512kbps.

Could you perhaps log in on your ADSL modem and post your ADSL line stats here?

 

[Tim the Techxpert]

Hi there,
Please provide your ADSL Statistics as Pada requested. It is a bit difficult to see what is going on from a ping report.
My line has been upgraded and I have had no issues at all.

Regards

Tim

 

[Dre21]

..................Downstream Upstream

SNR Margin : 19.5........ 14.0db

Line Attenuation: 47.5 ....... 19.0db

Data Rate: 1024 ....... 512 kbps

 

[biometrics]

SNR:

6dB or below is very 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 little or no sync problems
20dB-28dB is excellent
29dB or above is outstanding

Attenuation:

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

 

[ThumperZA]

Hi iv been having the exact same problems can you tell me how to show you my ADSL Statistics ?

 

[biometrics]

Every router is different. Log in and look for Status or Statistics.

Btw ppl, I found that my filter was dodgy, disconnect it and see if the values change. My SNR went from 6 yesterday to 14 today. No more disconnections. Replaced my filter and everything is fine now.

 

[ThumperZA]

DSL Firmware Version E.25.41.55 A
DSL State Connected
Downlink rate 1903800
Uplink rate 755600
SNR (downstream) 6.20 dB
SNR (upstream) 8.0 dB
Line Attenuation
(downstream) 39.5 dB
Line Attenuation
(upstream) 39.0 dB
Connection Standard ADSL2

 

[GreenArrow]

i had the same problem last night, and everyday for a month a few weeks ago hellopeter.com helped.
These are my statistics if it is any help at all.
ADSL Link Downstream Upstream
Connection Speed 2048 kbps 512 kbps
Line Attenuation 49.0 db 30.5 db
Noise Margin 9.9 db 12.0 db

 

[Pada]

ThumperZA:
Something is horribly wrong with your stats. Usually the upstream line attenuation value is about half that of the downstream line attenuation.

Also, given that your downstream line attenuation is 40dB (or less), you should at least be able to get 4Mbps with a decent ADSL modem.
You can give the D-Link DSL-2500U or TP-Link W8960N a try.

Before you replace the ADSL modem, I'd suggest that you test your ADSL connection again without any filters or telephones connected. With your upstream line attenuation being that high, I'm almost certain that you have a faulty/incorrectly installed POTS filter.

 

[ThumperZA]

@Pada can i PM you if I need further information? I ordered D-Link DSL-2640 Adsl Modem + Wireless Router, Who should i contact with this problem? I have my line via Telkom and im using Mweb 4mbps uncapped account.

 

[Pada]

ThumperZA:
You're welcome to send me a PM.

If you have a D-Link DSL-2640 that showed those statistics, then I'd suggest that you start by removing the filter(s) and phone(s) (including fax & alarm), so that it is just the ADSL modem that is connected and checking the stats again.
Generally the D-Link ADSL routers include very good modem chipsets.

There are other things that may influence the ADSL connection's stability - like certain electrical appliances that may have a high EMI (Electromagnetic Interference) - eg. CCFL (cold cathode fluorescent lights). So try and keep the telephone cable going from the modem to the Telkom box as small as possible and keep it away from other electrical stuff that aren't shielded properly!

 

[ThumperZA]

Hi iv tested the router indifferent parts of the House, and the Line Down&Up gets higher, would this problem only be caused by appliances filters etc not the actual line itself?

 

[Pada]

The problem could also be caused by the line, but that high upstream line attenuation is suspiciously like a filter or some kind of interference.
Moving the ADSL modem around in the house shouldn't change the attenuation by more than 1dB - unless your house is like larger than 1000m^2

 

[ThumperZA]

I think it has to be the Line nothing has changed here and i have used it without the filter and no phone plugged in no luck, would I just get hold of Telkom? what would i report?

 

[XeonRSA]

Soz guys been a bit busy,

Connect Mode ADSL2+, auto-fallback
Modulation G.Dmt.BisPlusAuto
Tx Attenuation Bis_0D8
DSP Firmware Version E.67.5.33
Connected true
Operational Mode G.Dmt
Annex Type ADSL2A
Upstream 512000
Downstream 4096000
CO Vendor P

Downstream Upstream
SNR Margin 20.5 dB 12 dB
Line Attenuation 33.0 dB 19.0 dB
CRC Errors 20152 0
Latency Fast Fast

And Pada I've run a tracert but it fails right after connecting/pinging my router.

 

[Tim the Techxpert]

Hi ThumperZA
Trying the router in different locations and having the attenuation increase is an indication that the connection in the house is not good or you are putting the router near to electrical influences. As Pada suggested remove all the filters, connect the router on the shortes cable possible and re-look at the statistics.
If the attenuation down is still pretty much the same as the attenuation up then you are going to have to report a fault with the ADSL provider.

Regards

Tim

 

[Pada]

XeonRSA:
Your stats look good, apart from the many CRC errors.

Try running:
tracert -d 8.8.8.8

I'd also suggest that you try removing all your filters and telephones to see if that doesn't change your situation. If that didn't help, then perhaps borrow another ADSL modem.
If that didn't help either, then report the fault with Telkom, and just keep escalating it till it is resolved.

You can always try and ask your neighbours if they're not also experiencing the same issue.