Thread: Frequent disconnection

I too have the same problem.
When ever power fails or there is a power surge, the modem disconnects.
see this.



I have to click the "NOTE" icon to reconnect.
I use "Always On" mode for both Airtel and Bsnl.
Whenever i switch ISP's after selecting in WAN page, again i have to click the Note Icon.

Adsl splitter connects BB connection directly to modem.
If Phone is OK , and you don't hear a "Hiss " sound in the phone, assumed ADSL connections are OK.

Ensure you use additional ADSL splitter for each
extension phone in different rooms. ( if they are
connected directly to BSNL phone port )


http://i34.tinypic.com/s4c0me.jpg

Originally Posted by just4kix

As your SNR values are high and attenuation is low, there is no problem with the line. I suspect that your splitter may be faulty.

Thanks will keep that in mind....!

@esbebe
My SNR and Attenuation are :-

Code:

                                Downstream Upstream 
SNR Margin (dB):          6.3             17.4  
Attenuation (dB):         40.5            22.7  
Output Power (dBm):    12.3            19.1  
Attainable Rate (Kbps): 4326           1138  
Rate (Kbps):                2799           765

I hear a great "hiss" sound in my phone when modem is connected and there is no "hiss" sound when modem is not connected.
Is those figures OK...

Originally Posted by kirankumargb

i didnt understand it, may be you just wanted to say you are in dial up mode ie Bridge not PPPoE ok

Ya the one which prompts for username and password.

@limpcool
Please mention Modem model. presume MT882.

ADSL splitter as supplied by BSNL.
Phone Port / Modem Port / Line Port
If the Telephone Instrument Rj11 is connected to LINE,
and PHONE RJ11 to BSNL Wall Phone Junction,
this "HISS"
may be heard ( BB data signals ), when BB connected.

Also in Parallel telephones ( from different BSNL phone ports) without additional ADSl splitter..

Please disconnect all phones and check SNR/ATTN
preferably with present Mod selected .
.
You line contacts can be corroded/blackened/oxidized/have high resistance contacts for the high attenuation. Try new short rj11 cables with new connectors.
( of course, last but not least is BSNL line to your house! )

Originally Posted by superprash2003

connected via USB or LAN?? your SNR is awesome!! Post your SNR once more when you face disconnections..

I connect via Ethernet cable.

SNR [Upstream] - 31dB
SNR [Downstream] - 29.0dB

Attenuation [Upstream] - 11.0dB
Attenuation [Downstream] - 23.0dB

Originally Posted by just4kix

As your SNR values are high and attenuation is low, there is no problem with the line. I suspect that your splitter may be faulty.

How can I know if the splitter is faulty ?

Originally Posted by essbebe

@limpcool
Please mention Modem model. presume MT882.

ADSL splitter as supplied by BSNL.
Phone Port / Modem Port / Line Port
If the Telephone Instrument Rj11 is connected to LINE,
and PHONE RJ11 to BSNL Wall Phone Junction,
this "HISS"
may be heard ( BB data signals ), when BB connected.

Also in Parallel telephones ( from different BSNL phone ports) without additional ADSl splitter..

Please disconnect all phones and check SNR/ATTN
preferably with present Mod selected .
.
You line contacts can be corroded/blackened/oxidized/have high resistance contacts for the high attenuation. Try new short rj11 cables with new connectors.
( of course, last but not least is BSNL line to your house! )

@esbebe
My modem is UT300R2U.

Due to some repairing works in my home i had opened the splitter two day earlier, I had only opened the BLACK wires in it... then re joined them after the repair works.



Did i done anything wrong at the time of re-joining?
Will it be a problem if i join Left side wires to Right and vice-versa?
Will it be a problem if the wires were joined a little bit loose?
Thanks.

Originally Posted by brodbnd

How can I know if the splitter is faulty ?

Try a new one

@brodbnd,

a) Does your internet get disconnected when you received an incoming landline call or when you make one?
b) Do you get a hissing sound on the telephone while modem is switched on?
c) Does you SNR fluctuate many times?

If the answer to any of your questions is "YES", then check whether the splitter is connected at the first entry point of the telephone line. There should be no parallel telephone lines before the splitter.

The splitter must separate the voice and data circuit and data line should be connected to the modem. All telephones including parallel lines should be connected to the voice port of the splitter.

If whatever said above is correct, and still there are problems, then splitter could be (note the underline) faulty. A splitter is very cheap and is available at most electrical stores for less than Rs. 40.

@limpcool
What you have shown in the picture,
is a very ordinary
two way telephone splitter.
phones are connected in parallel. to main line.

This Splitter to be added to the PHONE port
of the ADSL splitter supplied by BSNL.

Originally Posted by essbebe

@limpcool
What you have shown in the picture,
is a very ordinary
two way telephone splitter.
phones are connected in parallel. to main line.

This Splitter to be added to the PHONE port
of the ADSL splitter supplied by BSNL.

I am totally ZERO when it comes to dealing with hardwares or "hardware terms".
Anyway thanks for the reply.

hai freq disconnection only at one time is may be because of high useage at that time see that if the problem is through out the day . another problem may be connection problem from exg to your modem.

Originally Posted by essbebe

I too have the same problem.
When ever power fails or there is a power surge, the modem disconnects.
see this.



I have to click the "NOTE" icon to reconnect.
I use "Always On" mode for both Airtel and Bsnl.
Whenever i switch ISP's after selecting in WAN page, again i have to click the Note Icon.

Adsl splitter connects BB connection directly to modem.
If Phone is OK , and you don't hear a "Hiss " sound in the phone, assumed ADSL connections are OK.

Ensure you use additional ADSL splitter for each
extension phone in different rooms. ( if they are
connected directly to BSNL phone port )


http://i34.tinypic.com/s4c0me.jpg

The filter show here is of no use.
the ringing current passes thro to the ADSL modem, and that is Not healthy.

@mvssarma
please confirm you are referring this circuit/diagram..

http://i34.tinypic.com/s4c0me.jpg

The filter show here is of no use.
the ringing current passes thro to the ADSL modem, and that is Not healthy.

This is my second home 500+ connection in a different state, I am using the same modem that I used for my previous connection. I had some problems with the speed and some noise in my land phone with my second connection, so I opened the wall mounted box from where my landline was connected , stripped the wire properly and reconnected it and I never had a problem again. No disconnection. My night connectivity shows max of 2-3 disconnections (even no disconnections 90% of time within the 6 golden hours). Only one auto-connection from IE or IDM at logon and the connection lasts through out the free night time till shutdown.

For last 3 days my internet gets disconnected around 5 am. ADSL Light goes off and glows again after 2 mins. But I'm not able to reconnect again . I am in bridged mode and when I try to connect after that it shows Connecting to Wan Miniport PPPoE. But strangely I have seen that if I power off the modem and power on it again then I am able to get connected.

Strange problem. Never happened before.

Is my Modem faulty or it is a BSNL fault ?

Modem Configuration Details -

You may have to click the "NOTE" icon if seen ,
or even if green button is "ON" .

Originally Posted by essbebe

You may have to click the "NOTE" icon if seen ,
or even if green button is "ON" .

I am in bridged mode not PPPoE.

Originally Posted by brodbnd

For last 3 days my internet gets disconnected around 5 am. ADSL Light goes off and glows again after 2 mins. But I'm not able to reconnect again .

At same time means, did you check any other service is stopping your connectivity?

Originally Posted by brodbnd

I am in bridged mode and when I try to connect after that it shows Connecting to Wan Miniport PPPoE. But strangely I have seen that if I power off the modem and power on it again then I am able to get connected.

"Connecting to Wan Miniport PPPoE" Do you see this in your dialup computer?

well once disconnected, you need to make sure the ADSL link comes back , before you try to redial!!

Hello,

I have a BSNL UL750 for the last 2+ years and have a new problem of disconnection from every few minutes to an hour. BSNL guys have changed the modem, the line is said to have been cleared, changed the splitter, replaced internal cables with shorter cables and the port has been changed too. I have changed to GDMT mode as well.
I am in PPPOE mode and the modem now is a Quidway WA1003A. I am about 3-3.5 km from the exchange and have a good 256kbps when the line is connected.

Ping to yahoo returns a 'Request timed out' or 'Destination network unreachable' just before the DSL light goes off; the light comes back in a few seconds and gets a new IP.

I find a 'PPPD Terminated Through Signal' or 'Modem hangup' in the log as below. Please help!

Pasting some statistics:

Modem Status
Connection Status Connected
Us Rate (Kbps) 864
Ds Rate (Kbps) 2400
US Margin 8
DS Margin 25
Modulation GDMT
LOS Errors 0
DS Line Attenuation 39
US Line Attenuation 22
Path Mode Interleaved

DSL Statistics
Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0
-----------------
DSL Network Statistics

Tx PDUs 34704
Tx Total Bytes 5228697
Tx Total Error Counts 0

Receive
Rx PDUs 42276
Rx Total Bytes 21001730
Rx Total Error Counts 15

--------------------------

DSL in Sync

DSL out of sync

DSL Carrier is down

DSL in Sync

DSL Carrier is up

PPPD Terminated Through Signal

Connection terminated.

Doing disconnect

ppp0

pppd 2.4.1 started by root, uid 0

Got connection: c60d

Saved Session ID: 0

Connecting PPPoE socket: 00:e0:fc:60:40:a8 c60d nas0 0x1000d378

Default Asymmetric MTU for ppp0 1500

Connect: ppp0 {--} nas0

ppp0

WAN IP address 59.93.78.57

PPPoE Connect with IP Address 59.93.78.57

PPPoE Connection Successfully Established

PPPoE Connect with Gateway IP Address: 59.93.64.1

WAN gateway 59.93.64.1

primary DNS address 218.248.240.180

secondary DNS address 218.248.240.79

ppp0

Modem hangup

Connection terminated.

Doing disconnect

Terminated: Modem Hang-Up

pppd 2.4.1 started by root, uid 0

Got connection: 3d2c

Saved Session ID: 0

Connecting PPPoE socket: 00:e0:fc:60:40:a8 3d2c nas0 0x1000d378

Default Asymmetric MTU for ppp0 1500

Connect: ppp0 {--} nas0

ppp0

WAN IP address 59.96.98.1

PPPoE Connect with IP Address 59.96.98.1

PPPoE Connection Successfully Established

PPPoE Connect with Gateway IP Address: 59.96.96.1

WAN gateway 59.96.96.1

primary DNS address 218.248.240.180

secondary DNS address 218.248.240.79

DSL out of sync

DSL Carrier is down

DSL in Sync

DSL Carrier is up

PPPD Terminated Through Signal

Connection terminated.

Doing disconnect

ppp0

pppd 2.4.1 started by root, uid 0

Got connection: 7402

Saved Session ID: 0

Connecting PPPoE socket: 00:e0:fc:60:40:a8 7402 nas0 0x1000d378

Default Asymmetric MTU for ppp0 1500

Connect: ppp0 {--} nas0

ppp0

WAN IP address 59.93.75.0

PPPoE Connect with IP Address 59.93.75.0

PPPoE Connection Successfully Established

PPPoE Connect with Gateway IP Address: 59.93.64.1

WAN gateway 59.93.64.1

primary DNS address 218.248.240.180

secondary DNS address 218.248.240.79

I notice the US DS come to as low as 8 and 12
Is this the same as SNR?

---------------------------------------------------------
Modem Status
Connection Status Connected
Us Rate (Kbps) 864
Ds Rate (Kbps) 2400
US Margin 8
DS Margin 12
Modulation GDMT
LOS Errors 0
DS Line Attenuation 39
US Line Attenuation 22
Path Mode Interleaved


DSL Statistics
Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

Please try these values

IP - 192.168.1.2

Subnet mask - 255.255.255.0

Default gateway -192.168.1.1

Screen shots and procedure here

http://www.indiabroadband.net/broadb...nectivity.html (How to repair - Limited or No connectivity)

I also had these frequent disconnection issues a few weeks back. When i looked modem status then, it had very strange DSL syncing speeds

Us Rate (Kbps) 864
Ds Rate (Kbps) 11000

some thing like this. My DS Margin was always hopping around 1-8. And I also noticed that i was never able to connect in ADSL2Plus mode. Now since a couple of weeks everything changed, now i have

Us Rate (Kbps) 512
Ds Rate (Kbps) 2048

I think these figures make sence. Upload max speed : 512 Kbps and Download max speed 2 mbps. DS Margin have a healthy 10-25 range. I think BSNL might have been testing with something IPTV ??, as it needs higher transmission rates ?

But anyhow your DS Line Attenuation : 39 is pretty high. I guess there is definitely some problem in the line.

@Glass

Default Asymmetric MTU for ppp0 1500

In WAn or LAN settings page change to 1492.
if no improvement try lower numbers upto 1400.
Feedback please.

strange , inspite of all that , your SNR is still 8 which is pretty low. that could well be your problem