HELP! Unfixed Freq Discon every 1,2,5 min for 1.5 month due DSL Modem critical errors

HELP! Unfixed Freq Discon every 1,2,5 min for 1.5 month due DSL Modem critical errors: ADSL/PPP down

DSL modem Disconnects like Dialup every 1,2,5 minutes with Detailed Modem System Logs & Critical Errors.
So I opened up a small window / tab to constantly see the modem status info (wireless so a bit away).

I keep getting -
ADSL Link Issue
PPP Down
PPP Authentication
ACS Timeout
Sometimes everythings there with WAN IP and still pages dont open.

Check out this modem log in Excel File: Multiupload.com - upload your files to multiple file hosting sites! and please advise how to fix this.. Emailed and Online complaints for 1.5 months now.

Status Closed
Docket No 93240
Tel/Mobile 2625XXXX
Booked by XXXX XXXXX
Booked on 2010-09-09 23:45:25
Type BroadBand Services
Complaint Brief DSL down every 2 to 5/10 minutes. ADSL Down / Authentication Issues/ PPP Down Issues/ Certificate Issues. I have the detailed ADSL modem System Log that shows all critical errors happening every 2 to 10 minutes. I can email that. Call me please: XXXXXX XXXXX

Remarks # line fault pl meet to s d e h r yadav
eth/batt[ 2010-09-10 04:41:25-dmxadrocb]

Your Complaint has been booked with following information
Reference Number: 93810
Tel : XXXXXXX
Booked on : 2010-09-15 21:22:46
Booked by : XXXXX XXXXX
Type : BroadBand Services
Complaint : Complained about line & DSL Internet many times with no fix for 1 month. As per prev Docket:93240 contacted SDE Mr.Yadav but no fix. Uploaded detailed DSL Modem System Log with Critical Errors every 2-5 mins here
http://www.multiuplo ad.com/UFJ36MYTSD
- Please read excel file with Issues

email : XXXXXX
You are requested to note your complaint reference number 93810 for tracking above complaint.

I had even emailed the DGMs but the email seems to have bounced.
Any ideas on how to fix this... Area is Andheri & Number from 625 exchange.

SNR & Attenuation on DSL Modem:

Downstream
Upstream

SNR Margin (dB):
12.6*
21.0*
Attenuation (dB):
32.5*
15.9*
Output Power (dBm):
-1.9*
0.0*
Attainable Rate (Kbps):
11936*
1068*
Rate (Kbps):
1020*
260*

Downstream Upstream
SNR Margin (dB): 4.1 17.4
Attenuation (dB): 32.5 15.9

Varies.. 2nd one happened and the connection went down. Now that 4.1 is 4.9 / 5 / 5.1 etc.

After a restart / 10 minutes

Downstream Upstream
SNR Margin (dB): 13.7 8.9
Attenuation (dB): 37.0 19.4

1.
Mention your modem/model/make/number.
2.
Try GDMT as mod mode. recheck snr attn d/l
3.
Ensure ALL phones connected ONLY to ADSL splitter Phone port.
4.
Check contacts for rusting/blackening/etc.
5.
Use new short cables for Rj11,

feedback.

Are you using your own Router or a MTNL one,name it.

Enter 192.168.1.1 in your Browser address bar. if the Box appears asking you for your username and password which seems to be the case. with you ...there is NOTHING wrong on your Computer, the problem lies in the Router onwards ..

Go to Start > Run cmd > Ok C:\Documents and Settings\Administrator>ping 192.168.1.1 -t Press Enter

You should get a
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165

Then ping 59.185.0.50 -t

you should get a similar reply

Has a Engineer ever come over and replaced your router with a test Router ?

Some routers work on 9 V or 12 V batteries there should never be any mismatch here...

Don't ever give these leaches any bribes ....

Call 1504 and ask for the Tel No of your Exchange DGM ..the operator will give it to you

Originally Posted by essbebe

1.
Mention your modem/model/make/number.
2.
Try GDMT as mod mode. recheck snr attn d/l
3.
Ensure ALL phones connected ONLY to ADSL splitter Phone port.
4.
Check contacts for rusting/blackening/etc.
5.
Use new short cables for Rj11,

feedback.

1. ADSL Modem + Wireless Router

Board ID: 96338W2
Software Version: 3.12.01.SI.0B.06_0949_062609
Bootloader (CFE) Version: 1.0.37-12.1
Firmware Version: DNA-A212-0001.01
Hardware Version: DNA-A212 1.2
Model Name: DNA-A212
Wireless Driver Version: 4.174.64.19.cpe1.0sd

Wonder if I need a Firmware change / update?

2. How do I invoke and maintain this GMDT Mode?

SNR - Crappy.. 6/8/10/11.. After escalating it with major departments they did a bunch of line cleaning and for one evening ...the SNR was 30..
But then the other MTNL telephone line (we have 2 lines..) was down. I did not know, mom complained and they came and fixed it that line.
And somewhere after my euphoric evening of SNR=30.. It was down to 10/11 again as of today.

3. Yes. The incoming wire into the house is first attached to the splitter. Then one goes into Modem, the other goes into EPABX.

The Modem then connects to a 24 port Gigabit Managed Switch that is wired to LAN for every room in the flat. (I know Geeky.. But i've never looked at WiFi as high performance & reliable when it comes to CONCRETE in Bombay.. V/s when I was in the US where apartments are mostly wood).

4. The MTNL guys came and finally did a bunch of CARBON CLEANING. Downstairs at building box, another place where theres a box away from Building.

5. New short cables for RJ11....?? Elaborate.. on what you mean.
Note: These cables have been untouched and working fine for a long time.

Originally Posted by DiscoverMT

Are you using your own Router or a MTNL one,name it.

Enter 192.168.1.1 in your Browser address bar. if the Box appears asking you for your username and password which seems to be the case. with you ...there is NOTHING wrong on your Computer, the problem lies in the Router onwards ..

Go to Start > Run cmd > Ok C:\Documents and Settings\Administrator>ping 192.168.1.1 -t Press Enter

You should get a
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165
reply from 192.168.1.1 bytes=32 time<1ms TTL= 165

Then ping 59.185.0.50 -t

you should get a similar reply

Has a Engineer ever come over and replaced your router with a test Router ?

Some routers work on 9 V or 12 V batteries there should never be any mismatch here...

Don't ever give these leaches any bribes ....

Call 1504 and ask for the Tel No of your Exchange DGM ..the operator will give it to you

Buddy... this is beyond ping issues.. and all that networking basics..
The ADSL Link & PPP & ACS Errors are happening big time in the Modem:

Did I mention I sent a 100 page document logging Critical DSL Modem Error Logs from my Modem to the MTNL Emails..?

Ok. What can I do / tell them to bring one of these SPECIAL.. TEST ROUTERS.. ? Or is this just another replacement router to see if it does better?

What batteries for the Routers are you talking about? They are plugged into Ac to DC Power adapters... Which has been working fine for ages..

UPDATE.... with more detailed info:

SNR at a high for a short bit.. maybe that afternoon / evening only.

10/4/2010 3:17

Code:

Statistics -- ADSL		
		
Mode:		G.DMT*
Type:		Interleave*
Line Coding:		Trellis On*
Status:		No Defect*
Link Power State:		L0*
		
	Downstream	Upstream
SNR Margin (dB):	33.0*	31.0*
Attenuation (dB):	27.0*	14.5*
Output Power (dBm):	-2.9*	16.6*
Attainable Rate (Kbps):	10592*	1336*
Rate (Kbps):	1024*	256*

Now the SNR is back down.... Poof... (Note SNR in first post.. was even lower)

Code:

Mode:		ADSL2+*
Line Coding:		Trellis On*
Status:		No Defect*
Link Power State:		L0*
		
	Downstream	Upstream
SNR Margin (dB):	11.2*	29.9*
Attenuation (dB):	30.5*	14.2*
Output Power (dBm):	-1.9*	0.0*
Attainable Rate (Kbps):	10968*	1152*
Rate (Kbps):	1020*	260*

UPDATE: These logs are from last few days after the SNR was temporarily at 30 for one evening.. Before that these Logs showed disconnects ever 2,5,10 mins.. more or less .. If lucky I'd get 45 mins.

Code:

System Log			
			
Date/Time	Facility	Severity	Message
1/1/2010 0:00	syslog	emerg	BCM96345 started: BusyBox v1.00 (2009.06.26-04:23+0000)
1/1/2010 0:00	user	crit	kernel: eth0 Link UP.
1/1/2010 0:00	user	crit	kernel: Line 0: xDSL G.994 training
1/1/2010 0:00	user	crit	kernel: Line 0: ADSL G.992 started
1/1/2010 0:00	user	crit	kernel: Line 0: ADSL G.992 channel analysis
1/1/2010 0:00	user	crit	kernel: Line 0: ADSL link up, Path 0, us=260, ds=1020
1/1/2010 0:00	daemon	crit	pppd[594]: PPP server detected.
1/1/2010 0:00	daemon	crit	pppd[594]: PPP session established.
1/1/2010 0:00	daemon	crit	pppd[594]: PPP LCP UP.
1/1/2010 0:00	daemon	crit	pppd[594]: PPP LCP UP.
1/1/2010 0:00	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.
10/4/2010 14:43	daemon	err	user: No server certificate found. Skip checking on certificate.
10/4/2010 16:25	user	crit	kernel: eth0 Link DOWN.
10/4/2010 16:26	user	crit	kernel: eth0 Link UP.
10/4/2010 18:40	daemon	err	user: informer: Post to ACS failed, Status = 3 error: illegal http response or read failure
10/4/2010 18:40	daemon	err	user: ACS Disconnect with error 3

10/4/2010 20:43	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/4/2010 20:43	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/4/2010 20:43	daemon	crit	pppd[594]: PPP server detected.
10/4/2010 20:43	daemon	crit	pppd[594]: PPP session established.
10/4/2010 20:43	daemon	crit	pppd[594]: PPP LCP UP.
10/4/2010 20:43	daemon	crit	pppd[594]: PPP LCP UP.
10/4/2010 20:43	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/5/2010 2:43	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/5/2010 2:43	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/5/2010 2:43	daemon	crit	pppd[594]: PPP server detected.
10/5/2010 2:43	daemon	crit	pppd[594]: PPP session established.
10/5/2010 2:43	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 2:43	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 2:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/5/2010 8:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/5/2010 8:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/5/2010 8:44	daemon	crit	pppd[594]: PPP server detected.
10/5/2010 8:44	daemon	crit	pppd[594]: PPP session established.
10/5/2010 8:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 8:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 8:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/5/2010 14:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/5/2010 14:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/5/2010 14:44	daemon	crit	pppd[594]: PPP server detected.
10/5/2010 14:44	daemon	crit	pppd[594]: PPP session established.
10/5/2010 14:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 14:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 14:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/5/2010 20:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/5/2010 20:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/5/2010 20:44	daemon	crit	pppd[594]: PPP server detected.
10/5/2010 20:44	daemon	crit	pppd[594]: PPP session established.
10/5/2010 20:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 20:44	daemon	crit	pppd[594]: PPP LCP UP.
10/5/2010 20:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/6/2010 2:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/6/2010 2:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/6/2010 2:44	daemon	crit	pppd[594]: PPP server detected.
10/6/2010 2:44	daemon	crit	pppd[594]: PPP session established.
10/6/2010 2:44	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 2:44	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 2:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/6/2010 5:11	daemon	err	user: ACS Connect Failed: Could not resolve host bootstrap.acs.mtnl.net.in

10/6/2010 8:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/6/2010 8:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/6/2010 8:44	daemon	crit	pppd[594]: PPP server detected.
10/6/2010 8:44	daemon	crit	pppd[594]: PPP session established.
10/6/2010 8:44	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 8:44	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 8:44	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

10/6/2010 14:44	daemon	crit	pppd[594]: Clear IP addresses. Connection DOWN.
10/6/2010 14:44	daemon	crit	pppd[594]: Clear IP addresses. PPP connection DOWN.
10/6/2010 14:44	daemon	crit	pppd[594]: PPP server detected.
10/6/2010 14:44	daemon	crit	pppd[594]: PPP session established.
10/6/2010 14:45	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 14:45	daemon	crit	pppd[594]: PPP LCP UP.
10/6/2010 14:45	daemon	crit	pppd[594]: Received valid IP address from server. Connection UP.

I have 100 pages worth of these logs through most of Aug-Sept.. These are recent few days only.

Then one goes into Modem, the other goes into EPABX.

how many phone lines used in EPABX.

could be the reason. try with a SINGLE phone connection.

Originally Posted by essbebe

how many phone lines used in EPABX.

could be the reason. try with a SINGLE phone connection.

2 phone lines coming from MTNL and going to a Powered EPABX.

That is irrelevant because it has worked without issues for almost an year.
I have also had Tata DSL on the same environment which was not affected by EPABX.

The whole point of attaching the ADSL Filter before connecting anything is to ISOLATE the phone & DSL bands.

Plus: It worked very well through that evening. As I said..

PROMINENT ISSUES:

- SNR Margin
- Errors that I have outlined & bolded in the DSL Logs.

I'd appreciate if you focus on that and maybe help on the clues that make sense not get distracted by extraneous information like the MTNL guys.

As soon as they walked in and found I was using a Central location in the flat to distribute Telephone via EPABX & Internet via Gigabit Switch. .. they started screaming.. Wolf! Wolf! ..

I know you're more wiser than this. As I've said. Those issues have been checked & resolved. The issues that remain I've outlined.

PS: Then again, just to satisfy your point and MY curiosity, I will in fact disconnect the MTNL Line 2 (which has DSL) from the EPABX completely and see what changes.

Though even if that improves something, we'd have to reconnect it and find one of these:
- Better ADSL Filter
- Better Modem
- Better signal from MTNL

- Better line PROTOCOL ??
PS: What about that ADSL protocal that you suggested?

I just noticed in the SNRs I posted above:
SNR - 30: It was with GDMT
SNR - 10 & Lower: It was with ADSL2+

As per my recent reading GMDT+ is an older standard than ADSL2+.

Also in the DSL Section of settings all of the said protocols are "Checked" for usage.
Are you saying I should disable other protocols and enable only GMDT?

i have this exact same problem my friend and true.... the MTNL guys are unable to solve this problem...plz contact me or post here plz we are two ppl with the exact same problem perhaps we can help each other find solution! ty

which mode should it be kept on ADSL or GMDT? and also how to change the modes?

Please delete your emailID to avoid spam.
You can send a PM ( Private message) to @crashnburn_in
( Click USERCP on top)
( which we hope he will read , as well as this thread .)

I somehow missed this thread , and did not respond to his post.

It is likely he has solved the problem, and may not be a frequent user of this forum and you may not get a response.

Para two;

which mode should it be kept on ADSL or GMDT? and also how to change the modes?

Prefer GDMT See under Advanced options DSl menu.
Give details of your modem. number etc.

here are the details
Model Name T2-B-Gawv1.4U10Y-BI
Firmware Version 10.4.3.12.12
Serial Number 00261550ad73

Its a teracom build wifi type II however its not the modem fault coz i got the old modem replaced for this one!
Current SNR
SNR (Downstream) 25.55 dB
SNR (Upstream) 34.5 dB
Drops to 6-8 D/S and 12-15 U/S please help us there are so many such posts but unsolved!

And the type is ADSL2+ but no option to change that mode in PortStatistics-->DSL-->Advanced only information is there

my modem does not have direct option to change adsl2+ to gdmt
This is the configuration page with chekboxes and links to change BisM something something attributes

ADSL Supported Annexes
This page lists various ADSL supported capabilities.Capabilities can be configured by selecting checkboxes.

Common Settings
Basic Attributes


Annex Specific Settings
Capability

AnnexA AnnexA Attributes

T1413A

A2Plus BisA Attributes

A2

M2Plus BisM Attributes

M2

Okay this is going to get auto merged here the line disconnected and see the SNR
SNR (Downstream) 6.45 dB
SNR (Upstream) 15.5 dB

Test to be done in this condition:
MTNL Junction Rj11==>> ADSL Splitter
Adsl splitter Phone Port == > Rj11==>> telephones ( max 3 or 4 only )
Modem Port Rj11 to Modem Router.

Un check all buttons except top 2 and last button adsl2

can u tell me which ones from these plz
AnnexA ;
T1413A ;
A2Plus ;
A2 ;
M2Plus ;
M2 ;

i still did as you asked i only checked 1st, 2nd and last checkboxes but still in the advanced tab it says Connected Standard ADSL2+ i clicked "Apply" button then...do i have to click "Start" button?
okay it happened thanx and sorry for my noobishness....ill see if it stil disconnects and anyways since its been more than 2 months i had told them we will cancel your service and take other ISP so now they said do not worry we will give you a direct line from some place they have in my society!

However after changing to GDMT my speed test results became half i have an upto 4MBps plan so is that the cause? GDMT supports 8Mbps(=1MBps) or 8MBps?

And the wires are configured in the way you said thanx for your help

Gdmt will work for 8Mbps ( 1MBps) download max.
!
4MBps is same as 32Mbps speed . ( 4 x 8= 32 0 confirm.

Check connection status and find SNR ATTN values improved or not?

The ringer sound in your telephone ? Loud/medium/Low ?

Check speed here twice.. Mention mode mode selected.


Also cross check here to avoid confusion about Bytes./BIts

so 1MBps is the download speed right ? not the browsing max?

Since you like to ask questions only .and will not respond to suggestions /info asked by members,Unlikely you will get further response from me .

confirm this problem solved: for thread completion.
HELP! Unfixed Freq Discon every 1,2,5 min for 1.5 month due DSL Modem critical errors: ADSL/PPP down

Originally Posted by essbebe

Since you like to ask questions only .and will not respond to suggestions /info asked by members,Unlikely you will get further response from me .

confirm this problem solved: for thread completion.
HELP! Unfixed Freq Discon every 1,2,5 min for 1.5 month due DSL Modem critical errors: ADSL/PPP down

This stuff keeps coming and going every few months. What suggestions am I missing?

I am doing a bit more research and fixing on this in a few weeks.

Originally Posted by crashnburn_in

This stuff keeps coming and going every few months. What suggestions am I missing?

I am doing a bit more research and fixing on this in a few weeks.

I'm unaware of how my problem was solved but this i finally opted for a direct drop wire from my flat to junction box or sumthing and since then has been superfine

It cud be lose wires sockets or poor lining/ overheating of modem
I'm merely stating the popularly known causes.

Facing similar issues again