PTCL dissconnections

[blade]

AoA all....
I have a problem with my PTCL 4MB DSL connection.... i sometimes have random dissconnections...I use a ZTE 831D modem (the white one)
The line is directly coming into my room from the telephone pole and into the splitter....here is my SNR:

What seems to be the problem?
There are no joints in the cable... when the linesman comes to my place, he says ur line is fine.... the DSL 1218 helpline is useless... they never come...i cant figure out the problem of the random disconnections... its very annoying when i am gaming and this happens... plz help

 

[fareedusmani]

your line seems fine, maybe its because of voltage fluctuation?

 

[w00t]

^ that and how old is your modem?

 

[blade]

^ that and how old is your modem?

no voltage fluctuations... i have stabilizer... modem is quite old now... but i tried another friend's ZTE modem aswell... same problem happening....

 

[w00t]

Go to the customer services center, get the modem replaced. Try to get new fiberhome modes, they work quite well.

My first modem gave same problem after 1.5 years of use.

 

[MegamanEXE]

Welcome to the world of PTCL! I had this too. But it just fixed itself after some days. Sometimes it came again and stayed for 2-3 weeks and then just fixed itself again. I think it's all up to PTCL.

 

[StrikerX]

Your ADSL light goes off on modem or just internet?

 

[blade]

Your ADSL light goes off on modem or just internet?

the dsl light starts to blink and then reconnects instantly


Sent from my GT-I9000 using Tapatalk

 

[devnull]

That screenshot is COMPLETELY useless. Shows us the screenshot from the statistics page. It is most likely under "modem status" There you will find stats like

snr/ noise margin
line attentuation

 

[blade]

That screenshot is COMPLETELY useless. Shows us the screenshot from the statistics page. It is most likely under "modem status" There you will find stats like

snr/ noise margin
line attentuation

snr margin is there...and these are the only stats that show in modem status


Sent from my GT-I9000 using Tapatalk

 

[abobobilly]

Apparently your phone line is in quite good condition.
Your Modulation is ADSL2+ with pretty good SNR Margin and a 4MB/1 Up/Downstream.

There could be only TWO problems i can think of in this situation.
1. Your phone line is not in good health and may have some noise/distortion. If you are using a phone with your phone line then confirm it.
2. You are running your modem on Low Voltages, in which case use a better Adapter which could provide you with more mAh at less input V. (e.g 100-240V input; 0.5A Output)

 

[devnull]

Signal to Noise Ratio or SNR is a measure of how much noise there is in the phone line.

The thing about SNR is that it can vary due to many different factors. If you unhook the phone SNR will increase, if there is bad weather it might change, even the time of the day or night can have an affect on SNR. So what is very important for a good connection is a stable SNR. One that doesn't fluctuate all the time.

Anyway what's missing from the picture is the line attenuation. It's a measure of how much signal loss there is due to distance from the exchange. The lower the attenuation the better.

 

[StrikerX]

I don't think attenuation is the problem here but.... tell me blade does your SNR fluctuate?

 

[blade]

Apparently your phone line is in quite good condition.
Your Modulation is ADSL2+ with pretty good SNR Margin and a 4MB/1 Up/Downstream.

There could be only TWO problems i can think of in this situation.
1. Your phone line is not in good health and may have some noise/distortion. If you are using a phone with your phone line then confirm it.
2. You are running your modem on Low Voltages, in which case use a better Adapter which could provide you with more mAh at less input V. (e.g 100-240V input; 0.5A Output)

Yes i do use a phone... but i have tried the internet connections without the phone plugged in aswell... still it disconnects...
this adaptor uses 18v...

---------- Post added at 11:28 PM ---------- Previous post was at 11:28 PM ----------

I don't think attenuation is the problem here but.... tell me blade does your SNR fluctuate?

yes it ranges from 23 to 24.5

 

[Muaaz]

Since you have a good SNR, I think the problem might be with the cables. Try changing them, there might be a joint or two about which you might not know.

 

[StrikerX]

Yes i do use a phone... but i have tried the internet connections without the phone plugged in aswell... still it disconnects...
this adaptor uses 18v...

---------- Post added at 11:28 PM ---------- Previous post was at 11:28 PM ----------


yes it ranges from 23 to 24.5

Weird, that isn't enough of a fluctuation to cause a desync . I have no idea what problem you are having my friend!!

 

[abobobilly]

Signal to Noise Ratio or SNR is a measure of how much noise there is in the phone line.

The thing about SNR is that it can vary due to many different factors. If you unhook the phone SNR will increase, if there is bad weather it might change, even the time of the day or night can have an affect on SNR. So what is very important for a good connection is a stable SNR. One that doesn't fluctuate all the time.

Anyway what's missing from the picture is the line attenuation. It's a measure of how much signal loss there is due to distance from the exchange. The lower the attenuation the better.

There is a difference between SNR and SNR Margin. SNR Margin is ABOVE the minimum SNR limit which our copper lines normally need to sync our DSL ... if i am right.

SNR Margin here is 24db which is considered 'good enough' for a 4MB connection. (To be honest, i dont know what would the SNR value needed to sync a 4MB DSL)

Usually with our phone lines here, SNR varies A LOT and cannot be trusted from DSL statistics UNLESS strictly checked directly from the line. Which means SNR margin may be lower i.e. not enough to keep the dsl synced. (Suppose if it needs 15db to sync for a 1MB connection, then his SNR Margin is actually somewhere between 9 - 10db which would be 'good').

And SNR Margin decreases/varies A LOT when you are using a phone line.

Which is why i asked him to confirm if there was any scratching noise in phone line.

Attenuation wouldn't be much of a problem here because DSL Modulation being used here is ADSL2+ (G.dmt.Bis = ADSL2+) .... so it doesn't matter if the attenuation is not there. It will always be around 50 in this case anyway. Which would still be find as long it maintains a good SNR.

 

[kingsface]

I had exactly the same issue a month ago with same modem! Got new modem, problem was solved !

 

[blade]

I had exactly the same issue a month ago with same modem! Got new modem, problem was solved !

Which modem u using?

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[StrikerX]

Get a fiberhome modem blade. Its a white modem with PTCL logo on it. Very stable modem, have used a couple of PTCL modems & that was the best one.