Thread: Weird problem. Frequent disconnection

I am having a weird problem. My snr margin goes very less.
SNR Margin 5.5db 6.0db and the net gets disconnected..

When i call through my land line. The snr margin increases and it becomes
SNR Margin 31.5db 31.0db


Can u please explain where the problem is?? I am getting frequent disconnections. I have been having this for past one month..

When i checked the signal strength through bsnl line man ,The signal strength is very good.

Also my land line signal is good,,

Without splitter i tried to connect,But still there is same problem//

Signal to Noise Ratio (SNR)

The SNR should be higher than 20 though anything above 10 is just enough. The Attenuation should be as low as possible. But if the attenuation starts going higher than 40 and SNR going down below 10, it is time to complain about the line condition to BSNL.





Check the Wires

The leading-in cable (drop wire) from the junction box (DP box) to your house should be as straight as possible, should be of a single length without any joints. The wires should not be coiled anywhere and should be away from electrical lines. With these types of irregularities, i.e with joints or coiled or near power cables, your phone might work fine but the DSL link may not hold and work satisfactorily.

Splitters and Parallel telephones

Never by-pass the splitter. The splitter does the job of separating the high frequency ADSL signals from low frequency telephone signals. If the splitter is not installed correctly, the broadband connection is likely to go down every time the phone rings. Any parallel phone connections should be after the splitter and not before it. The line from the exchange should first enter into the splitter’s Line jack. The phone should be connected only to the phone jack of the splitter. The ADSL modem should be connected to the modem/DSD jack of the splitter. A two way jack may be connected to this phone jack to install your parallel telephones. The wire leading into the modem should not be running parallel or close to electrical wiring.

Any other parallel telephone line/ extensions
in any other room ?
Is there a "hiss"noise in the telephone ?

Feedback.
Mention your modem model/make number

No parallel phone lines.. But when snr is low hisss sound is there..
Automatically snr gets corrected when i call from land line.

When the line man came to check everything was fine..

Check ADSL splitter may be faulty.

But when snr is low hisss sound is there.

.
Mention modem/model/make number.
Check whether you have interchanged the
Ports. BSNL line goes to LINE
telephone to PHONE . port.
feedback.

Modem : UT-300R2U
The modem and phone line is already taken correctly as per the advice only.

post statistics adsl data
Save as JPG screenshot .
upload at tinypic.com
give the link here. ( drop http)
/i32.tinypic.com/123wer5/jpg EXAMPLE

2.
What is the model/make of the telephone ?

3. Connect cable RJ11 from PHONE port to
ADSL modem PORT,
and Telephone to Modem Port.
Result :
(a) internet did not work
(b) internet /Phone did not work
(c) Phone only works
(d) internet works phone dead
(e) none of the above
(f) new result ! report.

Now everything is fine.

ADSL status shows the ADSL physical layer status.
ADSL Firmware Version: E.37.5.3
Line State: Showtime/Data
Modulation: -
Local/Remote Tx Power: 1.13 dB / 1.84 dB

SNR Margin 33.5db 30.0db dB
Line Attenuation 20.0db 6.5db dB
Loss of Signal 0 0
CRC Errors 283 643
Data Rate 2048 256 kbps
Latency Fast Fast

LAN -Ethernet
MAC Address 00:18:02:93:3E:9D
IP Address 192.168.1.1
Subnet Mask 255.255.255.0
DHCP Server Enabled
NAT Enabled
LAN -USB
MAC Address 00:18:02:93:3E:9D
IP Address 192.168.1.2
Subnet Mask 255.255.255.0
DHCP Server Enabled
NAT Enabled
WAN
Virtual Circuit PVC 0
Connection Connected
IP Address 59.92.71.221
Subnet Mask 255.255.255.255
Default Gateway 59.92.64.1

I will get the statistics when it disconnects.

Update 1000AM
Congrats.

Now everything is fine

Phone Ok. ADSL splitter ok snr OK.


No changes were made.

3. 3. Connect cable RJ11 from PHONE port to
ADSL modem PORT,
and Telephone to Modem Port.
Result : Phone only works/Net doesnt works..

[What is inside an ADSL splitter.?
i50.tinypic.com/2vv6m4y.gif
[IMG][/IMG]http://adslm.dohrenburg.net/troubleshoot/splitter.php

This little device is not a dodecahedron, there are no mystical powers hidden inside this little device. The function of the splitter is to separate and block any unwanted frequencies to reach the phone and adsl modem. The filter/splitter was designed to be a low pass filter acting upon the phone section

The splitter is needed to block DATA signals entering the phone therby reducing the signal.
Modem can be connected directly to PHone lin of BSNL.

If BSNl phone junction has some addl
components in that box ( yellow type) they have to be by passed.
Seems your ADSl splitter is Ok as
3.3 blocked the data signals completely.

@deepmohan;

link image is not visible

I also tested, then reloaded the picture.
http://adslm.dohrenburg.net/images/
Now it is seen. new link given.

If BSNl phone junction has some addl
components in that box ( yellow type) they have to be by passed.whats is this thing

Old Bsnl Junction Box was a black one and they
used to screw the connections to telphone.

Later An yellow Box witha RJ11 Port was given.
Inside this there will be aprinted board with resistence and condensers and a fuse too !
supposed to be alightening arrestor ! This will attenuate/degrade/reduce the data signals.


A very useful web site with plenty of information.
book mark this.

[QUOTE=essbebe;259436][What is inside an ADSL splitter.?
http://adslm.dohrenburg.net/images/splitter-diagram.jpg
adslm.dohrenburg.net/images/splitter-diagram.jpg

link image is not visible.

If BSNl phone junction has some addl
components in that box ( yellow type) they have to be by passed.

whats is this thing

@deepmohan

Originally Posted by essbebe

[What is inside an ADSL splitter.?
http://adslm.dohrenburg.net/images/splitter-diagram.jpg
adslm.dohrenburg.net/images/splitter-diagram.jpg
link image is not visible.
whats is this thing

For replies please see
Post No 11. updated.
waited to avoid automerge.

Still the problem is there,

SNR margin goes below 7 and net gets disconnected .
When i call from land line to any number the snr automatically gets up tp
32 and gets connected.

After some time snr gets dropped again and net gets disconnected.

@dolphin7
When i call from land line to any number the snr automatically goes up to 32 and gets connected.
1
Your post No 8.I think enough info has been provided here so far.
2
Your feedback now gives no new information.
3
What kind of Phone you use ? Model ?

4
Any other extension phones in other rooms ?
5.
What is the Mod mode selected ?

If Adsl2 + uncheck this in access control page.

6. Give details of the DNS you use.

7. Keep the phone OFF cradle . and test.
Do not dial

4
Any other extension phones in other rooms ?
No extensions

5. What is the Mod mode selected /?
If adsl2 + uncheck this in access control page.
It was adsl2+ .Changed to G.dmt ..
Still disconnections are there..

NOw i doubt abt the modem ..
Is it possible to check whether the problem is in modem or not??

check in a friend's Bsnl Connection with modem set in "Dialer" mode.
( In WAN page select "Bridged" instead of PPPoE . Save reboot. wait for two minutes. . Use dialer to connect with friend's ID PW)
Check the SNR/ATTN data.

Or borrow his modem and test your connection.

same problem here

just to make sure.. you just have 1 telephone and this telephone is connected after your splitter? the telephone line to the modem is connected to the modem socket of the splitter and the telephone line to the phone is connected to the telephone socket of the splitter?? and you still face fluctuating SNR

Originally Posted by jaishankar

same problem here

out of thread : a useful program/application.
Giveaway of the Day - free licensed software daily. Glary Utilities Pro - Glary Utilities Pro is Powerful and Top all-in-one utility to fix, speed up, maintain and protect your PC.

tried g.dat but connection fails on binatone dt845w modem.....

Attenuation d/l is high 49 db.. Snr just marginal. value. should increase.
compare this:

http://www.indiabroadband.net/attach...m-bsnl-net.jpg
http://www.indiabroadband.net/attach...ci-status1.jpg

Modulation shown is adsl2 +
change to ADSL2 or GDMT and recheck
Check ALL phones connected only to ADSL splitter PHONE port
Check cabcle connectors for blackening/rusting/oxidization etc.
Try new cables ( short length )
Appears you are far away from Exchange say 5 to 6 Kms . confirm.

http://tinyurl.com/essbebe2