Thread: Unstable internet connection.

I have Home UL 750 plan.
I am running Vista 32bit.
I have a Linksys router connected to BSNL modem Smart AX MT 880. Linksys was setup to check the connection (Internet) every 30 sec and confirm that the connection is alive.

Problem is,
Internet keep diconnecting every 10 min or 15 min for a min or 2 and then comes back again. Sometimes, it wont come back for about 20 min and then comes back again automatically and sometimes, the problem wont occur for a day or 2 and then problem starts again.

TCP setting on the Network Card is "Obtain IP Automatically" and Roter is running the DHCP Server.

My phone line seems to be OK with Dial Tone when I loose the net.

Any Clue?

Thanks for help in advance.

It may be due to the problem of your tele line. Poor SNR values.

@srekar
quick options ;
Disable IPV6 from TCP/IP page.
2. Select GDMT instead of ADSL2 + ( if selected )
3. Ensure All Phones in all rooms connected
ONLY after the ADSL splitter.
( for each extension phone you can use ADDITIONAL ADSL splitter)
4. Post ADSL data from Summary page.
Only mod selected snr attn line speed rate rest data
not required.

5 Test only with the modem for stable connection.

6. . Links websites etc if required can be given
http://210.212.160.18/broadband-conf/type1.htm
7. FEEDback for ====>>> more.

1) If you are having any disturbances along with the dial tone, then you will have to "check your lines for faults". Just complain in your local telephone exchange about the problem, and they will check to see if there is any faults with any of the lines, and will replace them if necessary.

2) All other devices like fax machine or other telephone sets must be connected after th splitter.

How to connect parallels after the splitter:


3) Disconnect all other devices that are connected to your phone line so that your modem is the only device connected to the phone line (via an ADSL splitter). Reboot and retry connecting.

4) If nothing solves your problem, connect the modem directly to the phone rosette (refer to the above picture if you are unaware what it is), to test if the splitter is having any problem.

Thanks a lot for all who replied. I like this forum.
Before I saw the replies here, I changed the modem and router place to down stailrs from upstairs and observed a stable connection comparably.

As of now, it seems like problem is with the upstairs phone lines.

Few months back, I wired the phone lines from down stairs to upstairs along with RJ45 lines thinking that I will replace the modems from downstairs to upstairs.

From the day, I changed them to upstairs, I had this problem of frequent disconnections.

few hours back, I plugged the modems back in downstair phone line port and it seems like connection is OK now. I will update about the connection stability again here.

I will see the SNR ratio (in both places, upstairs and downstairs) and post the results again here to compare.

Tahnks a loooooot for the help.

What you need to keep in mind is that you must have the splitter at the first entry point of the telephone line in the house. Refer pic above.

Originally Posted by dhaneshv

1) If you are having any disturbances along with the dial tone, then you will have to "check your lines for faults". Just complain in your local telephone exchange about the problem, and they will check to see if there is any faults with any of the lines, and will replace them if necessary.

2) All other devices like fax machine or other telephone sets must be connected after th splitter.

How to connect parallels after the splitter:


3) Disconnect all other devices that are connected to your phone line so that your modem is the only device connected to the phone line (via an ADSL splitter). Reboot and retry connecting.

4) If nothing solves your problem, connect the modem directly to the phone rosette (refer to the above picture if you are unaware what it is), to test if the splitter is having any problem.

thnxx for such a useful post ...............
specially liked the pic attached .............. really makes the point clear .........

Originally Posted by eruptionjoojo

thnxx for such a useful post ...............
specially liked the pic attached .............. really makes the point clear .........

Thank You!!

Thanks for the repo just4kix!

Really helpful pic

Rep awarded

Not sure why I am not able to connect to modem using ip 192.168.1.1.
I connected the Modem directly to PC, typed 192.168.1.1 in the browser address bar and got "Page Not Found" error.

Pinged form cmd window (ping 192.168.1.1) and got no reply.

I tried from 3 different mechines (XP and Vista) from 2 browsers, IE and Firefox.

I even resetted the modem thinking that it will reset the IP to default one (192.168.1.1) But no use. Did all usual stuff like clearing cache, restarting PC, reinstaling browser and all.

Any clue??

What result are you getting when you try to ping?
(i) Request Timed Out?
(ii) Destination Host Unreachable?

1) Check whether the NIC is corrupted (Device Manager>Network Adapters).
(i) If it is not there, it has to be installed again.
(ii) If it is corrupted, reinstall it.

2) Try resetting the modem again, even if you have done it once as you said.

3) Check whether the RJ-45 from the modem is connected to the NIC card of the computer.

4) Give your feedback, or the present condition (if it was not solved).

@srekar
goto the TCP/IP in local area connection
and keep it to "Use the following IP address"
IP Address : 192.168.1.10
Subnet mask : 255.255.255.0
Default gateway : 192.168.1.1

keep this setting and try from browser it should work...!

@srekar

I am running Vista 32bit.
I have a Linksys router connected to BSNL modem Smart AX MT 880

.
Reset the modem with power on.
You seem to have tried everything.
Try to exchange the modem at BSNl or test it in their office.
Link given earlier I hope>
h t t p://210.212.160.18/broadband-conf/type1.htm

Thanks Kiran. Thanks to all again for help.
I tried the solution given by Kiran and it worked fine. Given static ip to NIC and I am able access the modem settings page now.

Now coming back to the original problem of frequent internet connection drops, here is the Modem data,
----------------------------------------------------------------------
Model Name MT880 Firmware Version V200R001C01B020 Jul 16 2004

ADSL Line Status
ADSL State Show Time Data Path Interleave
DSP Version C.87.2.7 Operation Mode G.DMT
Upstream DownStream
ADSL Link Speed 512 ADSL Link Speed 2048
SNR 22 SNR 32.5
CRC 0 CRC 0
FEC 0 FEC 0
HEC(ATM Layer) 0 HEC(ATM Layer) 0

WAN Channel
PVC VPI/VCI IP Address Gateway Subnet Encapsulation Status Note

PVC 0 0 / 35 --- --- --- Bridged

---

PVC 1 8 / 35 --- --- --- Bridged

---

PVC 2 0 / 100 --- --- --- Bridged
---
PVC 3 0 / 32 --- --- --- Bridged
---
PVC 4 8 / 81 --- --- --- Bridged
---
PVC 5 8 / 32 --- --- --- Bridged
---
PVC 6 14 / 24 --- --- --- Bridged
---

LAN Channel
MAC Address IP Address Subnet Mask Speed Duplex Status
00:0F:A3:35:CA:56 192.168.1.1 255.255.255.0 100BT Full

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


I connected the modem directly to PC, but connection is not stable.

Any Suggestions?

The problem was resolved by the Dept.
Issue was there in the control room as a MDF went bad. They replaced it and now the connection is more stable than before.

Thanks for all who helped me in this thread. I learned a lot suh as SNR and all, which I never cared for. -- Thanks for the help.