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Cato
29-07-2013, 10:22 PM
So for the past week or so my internet connection has become extremely unstable.
Sometimes I get a disconnect every few hours, other times it keeps dropping every few minutes.

I'm on a Linksys WAG120N. Upgraded firmware, factory resets. Lowered MTU. Everything I could.

This is what my log looks like.


Mon, 2013-07-29 11:00:24 - LCP down.

Mon, 2013-07-29 11:00:28 - Terminating on signal 15.

Mon, 2013-07-29 11:00:28 - LCP down.

Mon, 2013-07-29 11:00:30 - Connection terminated.

Mon, 2013-07-29 11:00:30 - Connect time 11.4 minutes.



--- DSL Information ---
DSL Driver Version: 3.4.4.10.0.1
DSL VPI/VCI: 0/100
DSL Status: Up
DSL Mode: ADSL2+
DSL Channel: 0
DSL Upstream Rate: 1272 kbps
DSL Downstream Rate: 15757 kbps

Down up
DSL Noise Margin: 123 dB 122 dB
DSL Attenuation: 10 dB 69 dB
DSL Transmit Power: -380 dBm -405 dBm

Do these numbers look good?

I don't think it is the filters, because I removed phone/sky having only the router connected to the phone line.

wratterus
29-07-2013, 11:35 PM
Those modems are expensive junk unfortunately. Whether it's causing your issue in this case remains to be seen, but I wouldn't be surprised. Can you get hold of another modem to test with?

Cato
29-07-2013, 11:42 PM
Those modems are expensive junk unfortunately. Whether it's causing your issue in this case remains to be seen, but I wouldn't be surprised. Can you get hold of another modem to test with?

Well the modem hasn't given me any issues over the past 4 years now. Although it gets extremely hot.

I might have a crappy telecom provided Thompson somewhere, had a look for it today couldn't find it. But that was so terrible I had connect it to a much older router to have stable Wi-Fi connection which forced me to buy this one.

What's a good router these days?

wratterus
29-07-2013, 11:52 PM
If you've got 4 years out of it, you've done very well.

The Asus DSL-N12U is pretty decent for an All In One that won't break the bank.

Chilling_Silence
30-07-2013, 12:24 AM
^^ Pretty much sums it up. I'm amazed it lasted you 4 years.

The DrayTek DV2760 is good if you're looking to future-proof with VDSL2, or the DV2710Ne if you're after something that's cheaper and JUST for ADSL2+

The DSL-N12U isn't *too* bad, but I've found a few things with it lately that really bug me.

Have a bit of a read here : http://www.fixmybroadband.co.nz/disconnecting/

Cato
30-07-2013, 01:10 AM
Hum. I don't need VDSL.

I'd like to spend no more than $150 - would the N12U be the best on this list for given price?

https://www.computerlounge.co.nz/components/componentlist.asp?parttypeid=171&t=18

We have a lot of devices: TV, PS3, 2 phones, iPad, 3 laptops and a desktop. And probably another TV soon.

linw
30-07-2013, 09:17 AM
Wouldn't it be a good idea to ring your ISP before jumping to the conclusion that a new modem will fix things?

inphinity
30-07-2013, 09:21 AM
It depends what features are important to you. The DSL-N series are very solid imo, and if the DrayTek is out of budget, that's what I'd go for.

wratterus
30-07-2013, 09:42 AM
Yep for under $150 (well under $150 actually) it's what I would go for too.

dugimodo
30-07-2013, 09:44 AM
Those signal to noise figures seem totally bogus, 123 DB ?? I don't think that's even possible, is there a decimal point missing? (every 3 DB = half the power. a 12 DB margin is a signal 16 times stronger than the background noise). Did this happen before or after the firmware update?

+1 for talking to your ISP first, if nothing else they can eliminate any obvious line fault

inphinity
30-07-2013, 09:53 AM
Some earlier firmware revisions for the WAG120N did indeed miss a decimal from noise margin, though I thought they also missed it from attenuation, so may not be the case here.

SolMiester
30-07-2013, 11:19 AM
Those signal to noise figures seem totally bogus, 123 DB ?? I don't think that's even possible, is there a decimal point missing? (every 3 DB = half the power. a 12 DB margin is a signal 16 times stronger than the background noise). Did this happen before or after the firmware update?

+1 for talking to your ISP first, if nothing else they can eliminate any obvious line fault

I was looking to see if anyone had picked up on the line stats, they are off the wall!

wratterus
30-07-2013, 12:42 PM
Pretty sure it's just those modems missing some decimal points. The one I used to have was like that too.

Edit - the transmit power is well out of whack though.

Agent_24
30-07-2013, 04:49 PM
Wouldn't it be a good idea to ring your ISP before jumping to the conclusion that a new modem will fix things?

^^ This. Could well be your line turned to ****, corroded connection or such.

Cato
30-07-2013, 09:14 PM
Did this happen before or after the firmware update?

They were the same before the firmware update.

I saw a lot of people having similar issues with WAG120N.

Cato
30-07-2013, 09:38 PM
Telecom Modem says:


Link Information

Uptime: 0 days, 0:15:21

DSL Type: G.992.5 annex A

Bandwidth (Up/Down) [kbps/kbps]: 1.240 / 16.546

Data Transferred (Sent/Received) [kB/kB]: 0,00 / 0,00

Output Power (Up/Down) [dBm]: 12,5 / 0,0

Line Attenuation (Up/Down) [dB]: 1,0 / 4,5

SN Margin (Up/Down) [dB]: 12,5 / 12,0

Vendor ID (Local/Remote): TMMB / IKNS

Loss of Framing (Local/Remote): 13 / 0

Loss of Signal (Local/Remote): 1 / 0

Loss of Power (Local/Remote): 0 / 0

Loss of Link (Remote): 0

Error Seconds (Local/Remote): 21 / 0

FEC Errors (Up/Down): 0 / 140.773

CRC Errors (Up/Down): 0 / 0

HEC Errors (Up/Down): 0 / 0

linw
30-07-2013, 10:12 PM
At least those stats look more worldly than the other set.

Interesting to hear whether you still get the dropouts. Nothing like substitution to test for problems!

Cato
10-08-2013, 11:51 PM
Ok. Well it was stable for a day and then went to crap again.
Telecom apparently noticed 99 disconnections in the 24 hours they monitored my connection.

Had a technician come over, said there was nothing wrong with my line after testing it for 20 mins at the cabined and 10-15 mins at my place. He said my line will be monitored for a further 24 hours.

My connection went unstable again an hour after he left. Over the next 7 hours, I lost connection a further 47-odd times.

I get a few good hours, and then disconnections every other minute. Sometimes twice minute. :(

This has become a nightmare.

linw
11-08-2013, 10:00 AM
Have you had a line filter installed?

If not, presume you have disconnected everything in the house except the modem?

Agent_24
11-08-2013, 12:49 PM
Maybe you're getting interference from something on the power grid?

Cato
11-08-2013, 07:07 PM
Have you had a line filter installed?

If not, presume you have disconnected everything in the house except the modem?

I had filters, I replaced filters. I ran without filters.
Phone hasn't been plugged in for about a week now.

And yes, I have tried all the jack points around the house. This is the 3rd modem, I'm running right now.

17 disconnections in the past 4 hours. :(

linw
11-08-2013, 09:27 PM
By line filter I meant master filter that separates the house wiring from the ADSL connection.

Really frustrating for you.

Good luck.