Sync loss

[StrikerSA]

Been having this problem for ages, and apologies if it's been dealt with before.

Since the end of January my ADSL line has been losing sync at random intervals, and it was particularly bad up until April. Since then, it seems to have vanished but every now and again it keeps coming up. It is especially bad on Sundays and early Mondays. Since I really want to get to the bottom of this, I was wondering if I could pinpoint whether it is the modem or line.

Here is my modem status (from a Mega 105RW):

Modem Status

Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 381
US Margin 12
DS Margin 27
Trained Modulation ADSL_2plus
LOS Errors 0
DS Line Attenuation 46
US Line Attenuation 24
Peak Cell Rate 301 cells per sec
CRC Rx Fast 0
CRC Tx Fast 0
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path
DSL Statistics

Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

Is there anything funny with it? And how I can monitor it should the sync problem come up again? I've tried using Routerstat but the program keeps hanging up on me.

 

[StrikerSA]

Okay, I've had another sync loss, so here is the modem stats after that happened.


Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 381
US Margin 23
DS Margin 5
Trained Modulation ADSL_2plus
LOS Errors 72
DS Line Attenuation 45
US Line Attenuation 23
Peak Cell Rate 301 cells per sec
CRC Rx Fast 474
CRC Tx Fast 533
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path

 

[fragtion]

One moment your downstream noise margin (signal:noise) is 27, which is great, the next moment it's 5... that's almost certainly your problem: noise on the line. Next time your connection drops, pick up the phone and listen if you can hear any interference... also try unplugging everything on that phone line except the adsl modem, and try plug the modem as close to the demarcation point (point where the line from outside enters your house) as possible. If that doesn't help, report a fault to telkom saying your line has a noise problem

 

[StrikerSA]

Thanks! I'll try that out when it happens again.

 

[StrikerSA]

Okay, I've listened to the phone when the connection dropped and there is this kind of humming noise in the background. Is that normal?

 

[fragtion]

Okay, I've listened to the phone when the connection dropped and there is this kind of humming noise in the background. Is that normal?

No, sounds like AC interference or something. Get Telkom to come have a look