Mweb Uncapped ADSL Line Issue

[Ak_Akhil]

I currently have the 2mbps premium uncapped which I have had for several years. I am having an issue with extremely low download speeds (0.25mbps or less). I contacted mweb they have reset the line twice in 3 days which made the speed reach 1.6mbps which is fine but after a 5+- hours the download speed is back to 0.25mbps.

What could cause this issue on my side? Or is it on mwebs side?

 

[Gordon_R]

Speed issues on ADSL are almost always caused by line noise, rather than anything your ISP can control. You will need to help yourself, by reading some of the sticky threads in this forum.

You should start by looking at the signal to noise ratios on your modem, in order to make any kind of progress: https://mybroadband.co.za/vb/showthread.php/186156-Understanding-SNR-and-Attenuation-Rates

Somewhere under DSL/Connection/Details you will find numbers such as SN margin (up/down) and CRC errors. With those in hand, someone here should be able to help you (if you can't understand the sticky thread). On newer MWeb modems the data can be accessed remotely, so the agent may have already looked at the numbers.

Factors such as your distance from the exchange, and the quality of the copper will be important, but you should be able to maintain 2Mbps under normal circumstances.

Resetting the line is obviously not working, so logging a call to Telkom may be necessary. However, there are no guarantees that they will be able or willing to do anything. Check all the junctions and filter connection inside your property first.

 

[Ak_Akhil]

Speed issues on ADSL are almost always caused by line noise, rather than anything your ISP can control. You will need to help yourself, by reading some of the sticky threads in this forum.

You should start by looking at the signal to noise ratios on your modem, in order to make any kind of progress: https://mybroadband.co.za/vb/showthread.php/186156-Understanding-SNR-and-Attenuation-Rates

Somewhere under DSL/Connection/Details you will find numbers such as SN margin (up/down) and CRC errors. With those in hand, someone here should be able to help you (if you can't understand the sticky thread). On newer MWeb modems the data can be accessed remotely, so the agent may have already looked at the numbers.

Factors such as your distance from the exchange, and the quality of the copper will be important, but you should be able to maintain 2Mbps under normal circumstances.

Resetting the line is obviously not working, so logging a call to Telkom may be necessary. However, there are no guarantees that they will be able or willing to do anything. Check all the junctions and filter connection inside your property first.

Upstream 512000

Downstream 2048000

SNR Margin(Upstream) 12 dB

SNR Margin(Downstream) 21.5 dB

Line Attenuation(Upstream) 15.0 dB

Line Attenuation(Downstream) 33.0 dB
CRC Errors(Upstream) 10

CRC Errors(Downstream) 0

Latency(Upstream) Fast

Latency(Downstream) Fast


This is copied from my modem. From the look of it most of the stats point to good / very good unless i'm reading it incorrectly.

 

[Gordon_R]

This is copied from my modem. From the look of it most of the stats point to good / very good unless i'm reading it incorrectly.

The figures look OK. The key is that line noise is often intermittent, so you have to monitor over a period of time (not just after the line has been reset).

If your speed diminishes at certain times of day, that would be congestion at the exchange, or throttling by your ISP.

 

[Ak_Akhil]

The figures look OK. The key is that line noise is often intermittent, so you have to monitor over a period of time (not just after the line has been reset).

If your speed diminishes at certain times of day, that would be congestion at the exchange, or throttling by your ISP.

This decrease in speed to 0.25mbps has only happened recently(2-4 months) If I don't reset the adsl line which I only did on Friday cause I couldn't stand the speed decrease and only after we did that we experienced the speed increase for 5 hours so I don't understand how it could be related to line noise if Mweb just have to reset the line and suddenly the speed increases immediately for a period of time.

We used to get the throttle after 7pm which is understandable the speed would go from 1.8 to 0.7 which is not bad but now we have 0.25mbps no matter what time or how much we use. It is labeled as not throttled on Mwebs site and we do follow the FUP policy.

 

[Gordon_R]

The symptoms you describe are consistent with intermittent line noise.

ADSL is an adaptive system, that analyses all of the available frequencies, and discards those that are the noisiest.

If the line noise varies across a range of frequencies, eventually you will be left with only a handful of usable channels (giving you 0.25Mbps), instead of the normal 40-80 channels (6-10Mbps).

Resetting the line begins the adaptive process from scratch, giving you higher speeds for a whole, until noise levels defeat the process again.

Edit: The details vary slightly if you are using ADSL2+ modulation.

 

[xodosman123]

Get the free afrihost 1gb account and test with that then you will know...

also could be a device that is draining the internet from your side.

 

[beesboertjie]

 

[Gordon_R]

Forgot to ask: Do you have a landline telephone with dial-tone? Listening for noise will give a good indication of any intermittent noise.

If one of the wires in the twisted pair is broken, this will completely interrupt the low frequency voice signal circuit, but still allow a very weak high frequency ADSL signal to get through (inductive resonance).

Not likely to explain your symtoms, but may be relevant for others.

 

[Ak_Akhil]

We have a slight noise but this only happened recently after a storm. The internet speed has been slow for a much longer time

 

[Gordon_R]

We have a slight noise but this only happened recently after a storm. The internet speed has been slow for a much longer time

Interesting but not always conclusive, since ADSL frequencies are above the threshold of human hearing (othwise you would not be able to talk and surf the web at the same time).

Any change in the line errors produced by your modem? If its not noise, then its time to escalate the problem.

also could be a device that is draining the internet from your side.

Edit: Also forgot to ask, are you use a hard-wired connecting cable or wireless? Have you tried turning off wi-fi?

 

[Ak_Akhil]

I have tried with both wired and wireless connection. No tasks are running in the background as I always check task manager to see whats using my internet and disable wifi on my phone.

I am going to try the HomeUnlimited package cause I am currently paying R375 p/m + telephone line which is R600+- in total which is the same price as 4mbps with Telkom. Trying to cancel with Mweb is pain at the moment.