Sudden drop in sync speed

Heksmeester

Heksmeester

Senior Member
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Hi all,

I've noticed that about 2 days ago, my 4mb line has suddenly dropped to 2.5mb and refuses to sync any higher. I've had Telkom recreate my port with no luck, and they are insisting that "Anything above 2mbps is considered a good connection". My latency is through the roof, and I'm also experiencing frequent disconnects when it's raining. Could this be a line fault?

Regards,
 
SirSlothXCI said:
Hi all,

I've noticed that about 2 days ago, my 4mb line has suddenly dropped to 2.5mb and refuses to sync any higher. I've had Telkom recreate my port with no luck, and they are insisting that "Anything above 2mbps is considered a good connection". My latency is through the roof, and I'm also experiencing frequent disconnects when it's raining. Could this be a line fault?

Regards,
Click to expand...

Telkom people talking nonsense as always, there might be a line fault so maybe Assia has readjusted your line speeds so that your line remains stable, resetting your ASSIA profile is not going to help if there is a fault on the line, that is exactly why your speed was adjusted in the first place, for your line to cope with whatever imperfections are there on the line. Posting your line stats always helps so fellow forumites can give informed advice.
 
SirSlothXCI said:
Where can I find these stats? Not too clued up on these sorts of things. :erm:
Click to expand...
Adsl statistics or line stats, differs from router to router, should be on the same page as where your sync is.

Post SNR and attenuation figures.
 
Here you go.

ADSL

Mode: ADSL_2plus
Type: ATM
Status: Up

Downstream Upstream
Line Coding(Trellis): On On
SNR Margin (dB): 452 302
Attenuation (dB): 250 132
Output Power (dBm): 0 102
Attainable Rate (Kbps): 13720 744
Rate (Kbps): 2559 252
D (interleaver depth): 96 1
Delay (msec): 13.35 1.13

HEC Errors: 566 898
OCD Errors: 0 0
LCD Errors: 0 0

Total ES: 1083 0
 
SirSlothXCI said:
Here you go.

ADSL

Mode: ADSL_2plus
Type: ATM
Status: Up

Downstream Upstream
Line Coding(Trellis): On On
SNR Margin (dB): 452 302
Attenuation (dB): 250 132
Output Power (dBm): 0 102
Attainable Rate (Kbps): 13720 744
Rate (Kbps): 2559 252
D (interleaver depth): 96 1
Delay (msec): 13.35 1.13

HEC Errors: 566 898
OCD Errors: 0 0
LCD Errors: 0 0

Total ES: 1083 0
Click to expand...

F*k, that is one good line, not sure why ASSIA is destroying it.

Any noise on the line? Filters all good? If no you must PM telkomza and ask to be put onto fastpath, no reason to be on interleaved mode with such good stats.


Include the stats in the PM.
 
Last edited:
Thanks for the advice. I've PM'd TelkomZA. Is it a process to switch to fastpath or will it be instantaneous?
 
SirSlothXCI said:
Thanks for the advice. I've PM'd TelkomZA. Is it a process to switch to fastpath or will it be instantaneous?
Click to expand...

First your line gets "tested" and should it pass then it would be put on the exclusion list.

But yours will pass, it all depends on how fast someone can read a message and push a button.
 
I might be wrong but those numbers look unusual, is it really 452db for snr and 250 for attn or is there a decimal point missing in those numbers?
 
thechamp said:
I might be wrong but those numbers look unusual, is it really 452db for snr and 250 for attn or is there a decimal point missing in those numbers?
Click to expand...

No decimals missing. Copied it over exactly as is on the router stats page.
 
SirSlothXCI said:
No decimals missing. Copied it over exactly as is on the router stats page.
Click to expand...

In theory the higher the SNR the better but I have never come across and SNR OF 452db, as for the attenuation, 50 to 60 is bad enough for your line not to synch, I honestly don't understand how it would synch at 250db.

As I said before I am no expert and I might be wrong but I think those numbers are odd to say the least. Any response from TelkomZA?
 
thechamp said:
In theory the higher the SNR the better but I have never come across and SNR OF 452db, as for the attenuation, 50 to 60 is bad enough for your line not to synch, I honestly don't understand how it would synch at 250db.

As I said before I am no expert and I might be wrong but I think those numbers are odd to say the least. Any response from TelkomZA?
Click to expand...

SNR Margin (dB): 452 = 45.2
Attenuation (dB): 250 = 25.0
 
Just crappy sw in the router ------ leaves out the crucial decimal places to confuse us perfectionists.

I agree the figures could just as well have meant. 0.452 dB ...... or 4.52 dB
 
thechamp said:
As I said before I am no expert and I might be wrong but I think those numbers are odd to say the least. Any response from TelkomZA?
Click to expand...

Sorry about that, not too clued up about these things. :P I'm still awaiting a response from TelkomZA. Also just clarified the decimals and sent a new PM.
 
Well I'm not quite sure what happened, but when I logged on to the router this morning to have a look at the stats, I saw that it's now syncing at full capacity again and my latency is back to normal. I did log a fault with Telkom but they haven't arrived yet and TelkomZA hasn't responded to my PM.

It seems the issue just resolved by itself? :confused: :whistle:
 
SirSlothXCI said:
Well I'm not quite sure what happened, but when I logged on to the router this morning to have a look at the stats, I saw that it's now syncing at full capacity again and my latency is back to normal. I did log a fault with Telkom but they haven't arrived yet and TelkomZA hasn't responded to my PM.

It seems the issue just resolved by itself? :confused: :whistle:
Click to expand...

No it did not, somebody did something but Telkom being what it is no one will bother to give you feedback, before long you will be getting that sms telling you that your fault has been resolved, anyways happy days again for you.
 
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