Download Speed

[Jumbo chilli]

Hi all,

I had been using TT&T maxnet indy( 2MB ) connection for a while and recently upgraded to premier for downloading large size of files.

When I was on indy, I was able to get download speed from 40 to 150KB/sec most of days.

Now, I'm on PREMIER and getting about 45-155KB/sec when I'm lucky.

I complained about my connection and one of maxnet engineers on the phone asked me to check internet speed on "SPEEDTEST.COM".

The test result says my download speed was 1340 kbps and upload was 219kbps.

However, this engineer(?) on the line told me I was getting very good connection.

So, the question is,

What sort of download speed should I be expecting on 2mb maxnet premier connection?

Thanks.

J.C

[Jumbo chilli]

Oh, forgot to mention,

In addition to getting slow download speed, I also get disconnected every 30-40min.

J.C

[moo9]

Hi

I also changed recently from Indy 2048 to Premier 2048 and honestly I do like Premier much better than Indy.

Higher Stability, better speed.

Though don't know what is wrong with your connection.

Good Luck

Moo9

[NHJ]

give us the value of the line aswell as the synchro.

[Jumbo chilli]

give us the value of the line aswell as the synchro.

I'm sorry, I'm practically blind person in terms of hightech thingys, please forgive me for my ignorance.

Could you please tell me with terms that is familiar with a person like I am, or tell me where to, how to find those-value of line and synchro-?

Thanks

JC

[Jumbo chilli]

Hi

I also changed recently from Indy 2048 to Premier 2048 and honestly I do like Premier much better than Indy.

Higher Stability, better speed.

Though don't know what is wrong with your connection.

Good Luck

Moo9

Where do you live moo9?

That's what I thought would happen.

By the way, I live in Chiang Mai.

JC

[NHJ]

hi,

this is found in the modem/routeur, depending of the brand those informations can be in different pages in the routeur's interface.

here's how this look usually :

Downstream Upstream

SNR Margin

:

24.5 24.0 db

Line Attenuation

:

39.5 22.0 db

Data Rate

:

2048 512 kbps

[monty]

Normally premier package should give better/ more stable speeds then what you get.

It might indeed be a line problem, especially since you also have disconnects!

The above is on a 3M/512 kbps Maxnet Premier line, and is entirely within specs.

Remember that on ADSL, when getting 80% of rated speed, this is considered a virtually perfect line (due to overhead).

So a 2M line (=2048 kbps) should test at between 1600 and 1700 kbps.

Every router has an ADSL status screen, often under different names, but what you are looking for is something like this:

In short the line attenuation, buth up and downstream, should never be higher then 60 dBm. The lower this number, the better.

The margin should be at least 12 dBm, both up and down stream, the higher this number, the better.

The numbers I give above will give you a working although not entirely stable connection. Depends a little on the brand of your router, some of them perform better on marginal lines.

In the same screen you can also see at what speed your router connects. If the line is not good enough to support the speeds your subscribed to, then your modem will gradually lower the speed at which it tries to connect until it can get a working connection. (the lower the speed, the easier it is for your modem to connect on a bad phone line).

[Jumbo chilli]

At this very moment, I'm getting 65KB/s.

What a day!

J.C

[Jumbo chilli]

Thanks monty,

I don't know if it is info you,ve mentioned above, but here it goes.

ADSL Status

ADSL status shows the ADSL physical layer status.

ADSL Firmware Version: 6.00.01.00 - 6.00.01.00 - 6.00.04.00 Annex A - 01.07.2b - 0.54

ADSL Software Version: V3.02B01T01.EU-A.20061023

Line State Connected

Modulation ADSL_G.dmt

Annex Mode Annex A

Max Tx Power -38 dBm/Hz

Item Downstream Upstream Unit

SNR Margin 12 6 dB

Line Attenuation 51 31 dB

Data Rate 1792 864 kbps

thanks

J.C

[Jumbo chilli]

Item Downstream Upstream Unit

SNR Margin 12 6 dB

Line Attenuation 51 31 dB

Data Rate 1792 864 kbps

Does it mean I should be getting this speed or am I getting it now?

My download manager says current download speed is 66.3KB/s

J.C

[monty]

Item Downstream Upstream Unit

SNR Margin 12 6 dB

Line Attenuation 51 31 dB

Data Rate 1792 864 kbps

Does it mean I should be getting this speed or am I getting it now?

My download manager says current download speed is 66.3KB/s

J.C

Your phone line is definitely not capable of supporting the package you subscribed to.

Your line attenuation is OK'ish, but your SNR margin is way too low, only 6dB on the up stream.

What happens is, when your modem connects it'll try to determine what speed it can connect at while having a 12 dB (or thereabouts) snr margin.

Which in your case was 1792 kbps (instead of the 2048 you subscribe to).

Your upstream could also not get realized, it should 1024, but your router manages only to squeeze 864 kbps out of your line.

Now what invariably happens is that over time, sometimes just a few minutes, the snr margin drops further. With your margin of 6 dB your transmissions will be riddled with errors resulting in constant re-transmission of data trying to get the stuff down to your PC correctly. Hence the low speeds.

In your case it's the upstream having the biggest trouble, but upstream is just as important for the system, in determining your data arrived error-free at your PC. If your upstream has errors, the system will think there's errors in the downloads and will simply re-transmits the packets of which it thinks they are wrong. Which results big amounts of traffic of no use to you!

Maybe 1 dB less on the margin and your router will give up, disconnect, and then try to re connect.

Some routers will just stop working and will only start again when you reboot them!

BTW SNR means signal to noise ratio. A phone line picks up noise along the way and the snr indicates how good the modem can distinguis between the noise and the actual ADSL stream.

The SNR margin indicates how much spare snr there is until your router can't hear the difference between noise and data. There has to be spare margin, since noise is not stable and goes up and down.

[monty]

To follow up, there are two things you can do:

Double check your phone lines in your house for bad connection, or replace altogether, and check that all other phone equipment (phones, faxes, dial up modem, everything!) is behind an ADSL filter.

No equipment should be before the ADSL filter on an ADSL capable system!

Alternatively, ask Maxnet to downgrade you packages to 1 Mbps/512 kbps.

Although the package is slower, you'll get a stable connection resulting in better speeds then you'll get now, and get rid of the disconnects.

[Jumbo chilli]

Item Downstream Upstream Unit

SNR Margin 12 6 dB

Line Attenuation 51 31 dB

Data Rate 1792 864 kbps

Does it mean I should be getting this speed or am I getting it now?

My download manager says current download speed is 66.3KB/s

J.C

Your phone line is definitely not capable of supporting the package you subscribed to.

Your line attenuation is OK'ish, but your SNR margin is way too low, only 6dB on the up stream.

What happens is, when your modem connects it'll try to determine what speed it can connect at while having a 12 dB (or thereabouts) snr margin.

Which in your case was 1792 kbps (instead of the 2048 you subscribe to).

Your upstream could also not get realized, it should 1024, but your router manages only to squeeze 864 kbps out of your line.

Now what invariably happens is that over time, sometimes just a few minutes, the snr margin drops further. With your margin of 6 dB your transmissions will be riddled with errors resulting in constant re-transmission of data trying to get the stuff down to your PC correctly. Hence the low speeds.

In your case it's the upstream having the biggest trouble, but upstream is just as important for the system, in determining your data arrived error-free at your PC. If your upstream has errors, the system will think there's errors in the downloads and will simply re-transmits the packets of which it thinks they are wrong. Which results big amounts of traffic of no use to you!

Maybe 1 dB less on the margin and your router will give up, disconnect, and then try to re connect.

Some routers will just stop working and will only start again when you reboot them!

BTW SNR means signal to noise ratio. A phone line picks up noise along the way and the snr indicates how good the modem can distinguis between the noise and the actual ADSL stream.

The SNR margin indicates how much spare snr there is until your router can't hear the difference between noise and data. There has to be spare margin, since noise is not stable and goes up and down.

Thankyou very much for your VERY informative post.

I guess I am getting the picture.

J.C

[Jumbo chilli]

To follow up, there are two things you can do:

Double check your phone lines in your house for bad connection, or replace altogether, and check that all other phone equipment (phones, faxes, dial up modem, everything!) is behind an ADSL filter.

No equipment should be before the ADSL filter on an ADSL capable system!

Alternatively, ask Maxnet to downgrade you packages to 1 Mbps/512 kbps.

Although the package is slower, you'll get a stable connection resulting in better speeds then you'll get now, and get rid of the disconnects.

O.K, I'll follow your instruction and let you know what outcome is like.

Big Thanks.

J.C

[Jumbo chilli]

I followed the instruction, but the improvement was not quite visible-there surely be though.

Having no option but dialing 1103.

One guy from TT&T showed up this morning and checked all cable inside and outside, check this, that...etc, etc.

He downgraded my download speed to 17?? from 2048 and also downgraded upload speed to 512 from 1024.

He said it is the best option I have at this location-approx. 3.5 km from something very important THING.

Apparently I'm living little too far from the THING.

Now I'm back online and getting 27KB download speed.

Well, What can I say!

J.C

Edited November 20, 2008 by Jumbo chilli