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Topic # 60923 5-May-2010 21:11
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Line Mode     G.DMT       Line State      Show Time 
Latency Type     Interleave      Line Up Time     00:00:27:51
Line Coding     Trellis On      Line Up Count     1

Statistics     Downstream     Upstream
Line Rate     8160 Kbps     992 Kbps
Attainable Line Rate     9376 Kbps     1096 Kbps
Noise Margin     16.1 dB     12.0 dB
Line Attenuation     4.0 dB     2.5 dB
Output Power     7.8 dBm     12.2 dBm
K (number of bytes in DMT frame)     256      32
R (number of check bytes in RS code word)     0      0
S (RS code word size in DMT frame)     0.5      1
D (interleave depth)     2      1
Super Frames     98293      98235
Super Frame Errors     1      0
RS Words     13367974      0
RS Correctable Errors     0      0
RS Uncorrectable Errors     0      0
HEC Errors     1      0
OCD Errors     0      0
LCD Errors     0      0
Total Cells     32159154      0
Data Cells     844289      0
Bit Errors     0      0
Total ES     1      1
Total SES     0      0
Total UAS     13      13




Now I know there is people around that can understand all this, just wondering if anyone here can check those stats and tell me if anything jumps out as being wrong or a problem etc?

The reason I ask is I'm having issues with our broadband, and it appears to be related to the line itself. Telecom has been out twice in the last two months, the latest today(Wed) but I'm still getting annoying issues such as drop outs, disconnections, timeouts. The modem appears to be still connected, but nothing works, I have tried 3 different ADSL modems, namely the Thomson Telecom provided, an Old Dlink DSL 504g and a brand new Dynalink 1320, all have the same issues, I have swapped filters, Telecom two months ago re-terminated the jackpoints in the house and replaced all jackpoints, we dont have an alarm, Sky or anything similar.

Today they changed the port at the exchange which has fixed one issue, taking 30 minutes to sync up, but the other issues are still there, will be ringing them back tomorrow as its still not fixed.

Plan: Telecom Bigtime
Speed: used to be 7mb down and 600kb up, its now 4mb down and 800kb up.

The latest batch of issues has been happening for the past 4 days. Prior to that it was fine.
Anybody offer any help?




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2028 posts

Uber Geek
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  Reply # 327120 5-May-2010 21:35
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It's hard to read in that format, but the stats look OK to me. Nothing leaps out at me anyway, but I'm not a DSL expert.

When you get dropouts, does the modem report disconnects? Are you sure you've got the filters on properly? I guess if Telecom have been out twice then they'd have looked at that, but one phoneline without a filter could cause you all sorts of problems.

Have you tried something simple like replacing the cable used between your wall jack and your modem? Also the CAT5 between your modem and your router?

Can you tell us more about the exact issues you're getting? Is it just some websites timing out? Everything stops working? Can you still ping things under a fault condition? What have Xtra said, do they see your session logging in and out? They should be able to look at their Radius records. If you are logging in and out on a regular basis, then I'd be looking at getting Telecom out again.

Hope this helps.





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Ultimate Geek
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  Reply # 327126 5-May-2010 21:47
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muppet: It's hard to read in that format, but the stats look OK to me. Nothing leaps out at me anyway, but I'm not a DSL expert.

When you get dropouts, does the modem report disconnects? Are you sure you've got the filters on properly? I guess if Telecom have been out twice then they'd have looked at that, but one phoneline without a filter could cause you all sorts of problems.


No it doesn't thats what is strange, the modem just sits there as if its still connected and even the admin panel reports it as being connected. As for the filters, yes have already replaced all, there is 3 jack points in the house, but only 2 are used, 1 for the DSL only and the other for a Phone and a St Johns Medical alarm(already isolated and tested that, not the problem)

As for cables, yes have already swapped out the cables no difference. The cable from the modem to the switch is Cat5e and has been changed twice.

muppet: Have you tried something simple like replacing the cable used between your wall jack and your modem? Also the CAT5 between your modem and your router?

Can you tell us more about the exact issues you're getting? Is it just some websites timing out? Everything stops working? Can you still ping things under a fault condition? What have Xtra said, do they see your session logging in and out? They should be able to look at their Radius records. If you are logging in and out on a regular basis, then I'd be looking at getting Telecom out again.

Hope this helps.



The issues are weird, its like someone turns off or disconnects the modem, but the modem says its still connected, all websites are affected, so is all other traffic including ping, tracert and ssh. I have several computers in the house and all show the same issues.

I have noticed though that it appears ok in the afternoon and only starts the issue from around 8pm onwards through to mid morning the following day.




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  Reply # 327128 5-May-2010 21:49
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Hmm sounds like you've tried most of the obvious stuff, might want to get a master splitter installed that will definately remove internal wiring / intereference as the cause.




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  Reply # 327130 5-May-2010 21:52
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What stands out to me is your modulation method?  "G.DMT"?  Your line speeds suggest that you are possibly on a ADSL2+ exchange so should be on G.992.5 annex A (this is what my Telecom Thomson wireless router is at).  

It would also be best to check with Telecom Broadband what "profile" you are on, it should be set to what ever your exchange is capable of (ADSL or ADSL2+) as well as whether "Inter-leaving" is on or off (on = more stable, off=lower latency, but possible less stable)

Also , your line attenuation levels seem quite low? (not sure if this is actually good or not).  The Noise margins seem ok.

When you say "Plan: Telecom Bigtime Speed: used to be 7mb down and 600kb up, its now 4mb down and 800kb up." ...

do you mean on a speed test?  This is your through-put speed and wouldn't necessarily match your "connect rate".

So what modem is that result from?  Can you perhaps try a different modulation method?
How far are you from the exchange?






 

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  Reply # 327137 5-May-2010 22:05
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Yes that's odd, G.DMT is a form of ADSL1, if you're connected to an exchange or cabinet that has ADSL2+ gear you should be connecting with that protocol.

What does the telecom wholesale maps site say about your address?
http://www.telecomwholesale.co.nz/maps

However you said they already did a port reset, which should have fixed profile issues.



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  Reply # 327141 5-May-2010 22:12
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We are on the Linwood Exchange in Christchurch which has been upgraded to ADSL2+ but the cabinet we are on isnt due till Dec 2010. yes the speed test is from speedtest.net which I know isnt great for tests.

I'm on the Dynalink RTA 1320 I think it is, its brandnew and ADSL2+ capable. As for modulation I cant find that modulation in the admin panel.

Firmware: 3.64y
ADSL2+ : A2pB025c.d20h





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  Reply # 327157 5-May-2010 22:36
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crazed: We are on the Linwood Exchange in Christchurch which has been upgraded to ADSL2+ but the cabinet we are on isnt due till Dec 2010. yes the speed test is from speedtest.net which I know isnt great for tests.

I'm on the Dynalink RTA 1320 I think it is, its brandnew and ADSL2+ capable. As for modulation I cant find that modulation in the admin panel.

Firmware: 3.64y
ADSL2+ : A2pB025c.d20h



Pretty sure the Dynalink RTA 1320 is supplied by TelstraClear?  A friend is on TC and he got one when he signed up.

Perhaps check the stats in the other routers you have, see if they are similar.

The thing is, if you are on standard ADSL, you should connect at no more than 7616 down and about 800-900 up.   I am still a bit curious about the profile Telecom has, but see what the other routers come up as... 

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  Reply # 327159 5-May-2010 22:40
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just another observation : Firmware: 3.64y is australian firmware?

refer http://www.dynalink.co.nz/asset-listings/firmware-listing?firmware_id=18205




479 posts

Ultimate Geek
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  Reply # 327164 5-May-2010 22:47
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gi99a: just another observation : Firmware: 3.64y is australian firmware?

refer http://www.dynalink.co.nz/asset-listings/firmware-listing?firmware_id=18205



You are correct there, will sort that. The modem was purchased online and is not ISP supplied.




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  Reply # 327166 5-May-2010 22:52
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Your line stats look good.

Your line speed is this part

Statistics Downstream Upstream
Line Rate 8160 Kbps 992 Kbps

which is full speed for a ADSL1 connection.

You say it's like the modem is turned off but still seems connected.

Does that mean you can still access the modems admin panel from your computer or do you mean that you can't see the modem admin screen with your browser but the modem lights, DSL and PPP are still on?


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  Reply # 327169 5-May-2010 22:56
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crazed:
gi99a: just another observation : Firmware: 3.64y is australian firmware?

refer http://www.dynalink.co.nz/asset-listings/firmware-listing?firmware_id=18205



You are correct there, will sort that. The modem was purchased online and is not ISP supplied.



Actually 3.64y is correct firmware for the RTA1320. That link is to RTA1046W

http://www.dynalink.co.nz/asset-listings/firmware-listing?firmware_id=18221



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Ultimate Geek
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  Reply # 327172 5-May-2010 23:01
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teletek: Your line stats look good.

Your line speed is this part

Statistics Downstream Upstream
Line Rate 8160 Kbps 992 Kbps

which is full speed for a ADSL1 connection.

You say it's like the modem is turned off but still seems connected.

Does that mean you can still access the modems admin panel from your computer or do you mean that you can't see the modem admin screen with your browser but the modem lights, DSL and PPP are still on?



Yes I can still access the admin panel and it says the modem is still connected.

Firmware, yes noticed it was wrong product.




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  Reply # 327175 5-May-2010 23:13
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sorry guys, my bad, googled the firmware only.
Australian ADSL is different to NZ ADSL in regards to some settings (VPI,VCI etc). o it is imporatnt to ensure it is the NZ firmware version.

Sometimes, there can be problems if you are too close the the ADSL equipment (cabinet or exchange) and Telecom sometimes have to adjust your profile. There must have been something noticed for them to change the port?

Can Telecom confirm they still see your dropouts?

Have you tried the other routers to see what stats they show?



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  Reply # 327177 5-May-2010 23:17
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crazed:
teletek: Your line stats look good.

Your line speed is this part

Statistics Downstream Upstream
Line Rate 8160 Kbps 992 Kbps

which is full speed for a ADSL1 connection.

You say it's like the modem is turned off but still seems connected.

Does that mean you can still access the modems admin panel from your computer or do you mean that you can't see the modem admin screen with your browser but the modem lights, DSL and PPP are still on?



Yes I can still access the admin panel and it says the modem is still connected.

Firmware, yes noticed it was wrong product.


Next thing to do would be to do a tracert and save it.

Your looking for the next hop out of the modem, which should be the ASAM at the end of your line. i.e the port.

Next, I suggest you turn on the Logging feature on the RTA1320 and set to debug level.

You can log to LOCAL or REMOTE or both. LOCAL will store in the router but can cause it to get a bit slow when you access the admin panel after a while.

I usually use REMOTE and point to a computer on the LAN with KiwiSyslog Daemon running to collect the output.

You can download from http://www.kiwisyslog.com/

Let that run overnight and see what it's done in the morning.

I would expect you to see it hasn't dropped based on those line stats you originally posted.

Next time you can't access the net see if you can ping your ASAM using the Ping test in the RTA1320 and that will prove the router to port connection is still up.

Then try the next hop from your tracrt save to see how far you can get before it fails.

With the debug output to the syslog you should be able to narrow it down as I would be really surprised if its a line fault from what you've explained so far.












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Ultimate Geek
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  Reply # 327178 5-May-2010 23:18
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gi99a: sorry guys, my bad, googled the firmware only.
Australian ADSL is different to NZ ADSL in regards to some settings (VPI,VCI etc). o it is imporatnt to ensure it is the NZ firmware version.

Sometimes, there can be problems if you are too close the the ADSL equipment (cabinet or exchange) and Telecom sometimes have to adjust your profile. There must have been something noticed for them to change the port?

Can Telecom confirm they still see your dropouts?

Have you tried the other routers to see what stats they show?




Yes Telecom have confirmed the have noticed the drop outs on their logs for our connection. As for the other routers, Will try that in the morning, although stats are similar for all.




CraZeD,
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