Thread: Possible Reasons for disconnection

hey i recently purchsed the 750 unlimited plan from bsnl.i have noticed that every 10-15 min my connection disconnects.i need help in locating the exact reason for for disconnection so that i can try and fix it.
Modem type is:UT300R2U
Type I i.e

same problem for home 500c plan

i would also like to add that the DSL light remains on its the internet light which gets dropped on and off....

Go for ppoe connection, which is stable, some how error free.

I am taking from my experience.....i had this prob...... checked my modem after the disconnection,it was so hot...... i removed pc external fan and placed over the modem....and checked.......The problem got solved.....please try this method.....befor going to any step

Originally Posted by robert_0007

Go for ppoe connection, which is stable, some how error free.

where can i get a guide for ppoe connection

try this link---
BSNL BROADBAND MAIN MENU

also in your modem settings look for SNR values in overview/status tab.if any SNR value is below 10 you will face frequent disconnections.

if the internet light is flickering then its ok and you need not to worry about internet light..

but if it is dropping connection frequently then you can try to check SNR value and apart from that check your
firewall setting
modem idle timeout
run spyware check

and we really face lot many problems on PPPoE as well... somewhere its same but provides better connectivity...

[/QUOTE]
also in your modem settings look for SNR values in overview/status tab.if any SNR value is below 10 you will face frequent disconnections.[/QUOTE]

yes my SNR value is below 10 what next as a solution?

would also like to add that my connection has been PPoe enabled

low SNR values indicates line problem.make sure that telephone line coming into house goes directly into the splitter & no phone is connected before splitter.check that line has no cuts/joints & you should not hear any background noise in telephone.if everything is alright on your end then you need to get your line checked by bsnl & they will fix the problem.

thank you for your help!! i think the issue is with my telephone line i just checked the wire has got stretched at 1 point to an extent that the plastic covering itself has peeled and exposed the wires rectifying it now. also is it possible to change the wire personally as bsnl is known for bad customer service i dont expect them to respond soon. the juncton box is very near my house and as i live in a private house dont think changign it will be a issue....please advice.

also is SNR value same as SNR margin....i failed to find anything called SNR value and now after wire change i am getting 8db-downstream and 12db-upstream so is this SR value a sum of both as i pressume?

changing telephone wire personally is not a good idea unless you have some prior experience in such things.first try with what you are doing to rectify that joint & see if SNR improves.if it does then no problem.

Originally Posted by whitestar_999

changing telephone wire personally is not a good idea unless you have some prior experience in such things.first try with what you are doing to rectify that joint & see if SNR improves.if it does then no problem.

please read my edit on previos post it might be a possible end to the problem nvm ill post it here again ill compy paste from my router

Mode: ADSL2+
Line Coding: Trellis On
Status: No Defect
Link Power State: L0

Downstream Upstream
SNR Margin (dB): 7.1 11.6 (varies between8-12)
Attenuation (dB): 24.5 37.4
Output Power (dBm): 12.3 0.0
Attainable Rate (Kbps): 15648 220
Rate (Kbps): 8189 250
MSGc (number of bytes in overhead channel message): 60 12
B (number of bytes in Mux Data Frame): 24 13
M (number of Mux Data Frames in FEC Data Frame): 1 16
T (Mux Data Frames over sync bytes): 10 2
R (number of check bytes in FEC Data Frame): 16 14
S (ratio of FEC over PMD Data Frame length): 0.0973 24.7273
L (number of bits in PMD Data Frame): 3371 77
D (interleaver depth): 384 2
Delay (msec): 9 12

Super Frames: 39045 27040
Super Frame Errors: 0 0
RS Words: 25770270 56595
RS Correctable Errors: 71238 17
RS Uncorrectable Errors: 0 N/A

HEC Errors: 0 0
OCD Errors: 0 0
LCD Errors: 0 0
Total Cells: 12092320 150338
Data Cells: 236132 53896
Bit Errors: 0 0

Total ES: 39 0
Total SES: 32 0
Total UAS: 460 0


ithis snr value is classified as downstream and upstream SNR margin so is SNR vlaue its sum ?

Mode: ADSL2+

mode should be G.dmt.change it to G.dmt & then see if SNR values improves.SNR here means SNR margin values indeed & they are different for upstream & downstream.both values must be above 10 for smooth connection.

where can i switch ADSL2+

nvm what among these should be enabled?and what not

Select the modulation below.
G.Dmt Enabled
G.lite Enabled
T1.413 Enabled
ADSL2 Enabled
AnnexL Enabled
ADSL2+ Enabled
AnnexM Enabled

Select the phone line pair below.
Inner pair
Outer pair

Capability Bitswap Enable
SRA Enable

in "select modulation" uncheck/disable all others except G.dmt.

i tried what you told me above but the speeds fell drastically. earlier when adsl2+ was enabled i used to get speeds of 30-35kbps on torrents ,but now the speeds have fallen to a mere 20kbps.....also i have requested bsnl for a wire change hope they come soon.

don't uncheck options like bitswap,annexM but only other modes like ADSL2,T1.413,Glite.take a look here for various modes---
http://www.indiabroadband.net/bsnl-b...html#post35302

Checked my SNR value it is 20 and the Attn. 15, but still this problem updated my MT841 firmware, but of no help. what could the reason be then?? of spl mention is that during peak hours this happens most frequently

also check that mode is G.dmt not ADSL2/2+ in settings.however if the problem is not there during off hours then most probably problem is with bsnl network.