Unstable ADSL line - noise?

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Penquin

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I'm trying to help my cousin sort out his ADSL. Sometimes he is getting quite a lot of desyncing, even more so when the weather is bad and then some days it will be fine again. I checked his stats on the router and I'm guessing it's noise related as the SNR is quite low. The router is a Billion 7300GRA, line stats as follow:


DSP Firmware Version DMT FwVer: 3.10.17.0_A_TC, HwVer:T14F7_5.0
DMT Status Up
Operational Mode ADSL G.DMT
Upstream 512 kbps
Downstream 4096 kbps
SNR Margin (Upstream) 12.0 db
SNR Margin (Downstream) 8.0 db
Line Attenuation (Upstream) 30.0 db
Line Attenuation (Downstream) 55.0 db

Also something interesting to note, when he switches off his HTPC in the lounge, the router would lose sync as well and then resync again. Any ideas on how to get the line more stable, without having to drop the speed. Can one report a fault to Telkom to come and check the line? Could it be the internal phone line wiring generating the noise. Will a different ADSL router help?
 
I've been through this with telkom before. After 7 months of fighting, having them run new cables to my house, swopping ports, movings DSLAM's, trying different modems, ect ect.... I gave up.

Lower your speed, it's the only way. Drop it to 2Mb and not only should that line be stable enough but you'll also save your cousin many hours of his valuable time. Btw, who's his ISP? Because with shaping and FUP's, he probably won't even notice a drop in speed..
 
He is with Afrihost as ISP 4Mb uncapped and recently moved the line there as well. He doesn't want to drop the speed, as they are a rather active internet house, with lots of downloads, video streaming and online gaming from about 3 PC's. He wanted to increase to 10Mb, but it looks like the exchange doesn't support 10Mb yet.
 
Kayoss said:
I've been through this with telkom before. After 7 months of fighting, having them run new cables to my house, swopping ports, movings DSLAM's, trying different modems, ect ect.... I gave up.

Lower your speed, it's the only way. Drop it to 2Mb and not only should that line be stable enough but you'll also save your cousin many hours of his valuable time. Btw, who's his ISP? Because with shaping and FUP's, he probably won't even notice a drop in speed..
Click to expand...

Not always the case, my brother's line used to sync at 1Mb then with the upgrade to 2Mb he would lose sync regularly and his sync never went over 1.5Mb, he logged a call, Telkom came out and found that one of the wires was broken about 80m down the road, they repaired it, he's now syncing at 2Mb with an attainable rate of 8.7Mb

Penquin said:
He is with Afrihost as ISP 4Mb uncapped and recently moved the line there as well. He doesn't want to drop the speed, as they are a rather active internet house, with lots of downloads, video streaming and online gaming from about 3 PC's. He wanted to increase to 10Mb, but it looks like the exchange doesn't support 10Mb yet.
Click to expand...

A decent router should help him keep a 4Mb sync, he won't get anything more than that though he's just too far from the exchange even if it did support 10Mb
 
Hi There,
As Afrihost is managing line as well as ASP place the call with them and get it checked out. Dropping the speed with those stats is going to provide some stability.
Remember also that uncapped also means complying with the fair usage policy and they will apply that as I know from personal experience.
You may be picking up some interference if unplugging devices causes it to re-sync so if you can move the router further away and make sure it is not on the same electrical circuit as current spike is switching on and off may be causing it.

If you want to check given the stats you have the maximum sync rate look at the link here

Regards Tim

Follow me on @TechXpertTim
 
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