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Dail-up hangs [Windows XP & 7]

  1. #1
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    Question Dail-up hangs [Windows XP & 7]

    Hello guys,

    Right to point :
    i am using windows 7, using my own batch script to prevent idle connections and to do redials if dropped, i face many dsl link drops during day and night time, sometimes windows show dial-up connection is connected but its not, when i try to disconnect it, it won't, finally means the whole windows dial-up software/thingy/api/system (whatever) hangs, but other things in whole OS works fine, the only known way is to restart pc to correct this problem.

    it happens in xp also but i am not using it anymore


    re-creation:
    i can easily recreate the problem by pulling dsl cable from router, means by doing it many times, just put inn - put out ( 10 times or 20 times like that), yes its just random problem, how ?? well i guess it happens when windows recognize that there is connections but its not actually there
    or
    we can say that sometimes windows can't recognize the disconnection and hangs the window dail-up thingy ( dail-up api technically ) when redialer detects that there is disconnection by pinging the google or yahoo and redials the connection, it creats conflict

    what's code in your batch file ?
    its just simple command
    Code:
    rasdial BSNL username password
    already tried:
    closing known services responsible for windows dial-up, network connections
    crashing explorer ( sometimes work, maybe due to unloading of some dll files )
    logg-off user and logon again ( sometimes work, not always)


    router:
    Atrie DB 108
    Lan card: onboard lan card, biostar (with amd cpu) & gigabyte (with intel cpu) 2 pc
    Cat 5 cable

    BSNL details:
    plan 750 unlimited
    speed 2mbps ( 220 KB/sec all the time)
    pole to home wire is new, pair changed already ( 20 times i guess)
    employees know me by my voice, they hate me very well !
    data usage per month : above 200 GB/month
    already tested more than 20 auto dial-up dialers and my some vb/batch scripts


    little about me:
    Electronics engineer
    using computers from more than 10 years
    can code in php, python, perl, bash/batch scripting some other little things too
    can handle linux/windows servers very well

    I hate windows, alas i need them for some particular work !!


    My snr is little low then expected, cuz exchange is 5Km away from here
    Code:
    Status  	 SHOWTIME 
    Mode 	G.DMT 
    Type 	Interleave 
     
                     	Downstream 	Upstream
    Rate (Kbps) 	            2048  	       512 
    SNR Margin (dB) 	  7.7  	               24.0 
    Attenuation (dB) 	  41.0  	       23.5 
    Output Power (dBm) 	    19.3        	11.6 
    Super Frames 	         198547  	  198545 
    Super Frame Errors 	   63  	             0


    Code:
    Windows IP Configuration
    
       Host Name . . . . . . . . . . . . : Its-Hidden
       Primary Dns Suffix  . . . . . . . : 
       Node Type . . . . . . . . . . . . : Mixed
       IP Routing Enabled. . . . . . . . : No
       WINS Proxy Enabled. . . . . . . . : No
    
    PPP adapter BSNL:
    
       Connection-specific DNS Suffix  . : 
       Description . . . . . . . . . . . : BSNL
       Physical Address. . . . . . . . . : 
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 117.***.***.134(Preferred) 
       Subnet Mask . . . . . . . . . . . : 255.255.255.255
       Default Gateway . . . . . . . . . : 0.0.0.0
       DNS Servers . . . . . . . . . . . : 218.248.255.196
                                           218.248.255.194
       NetBIOS over Tcpip. . . . . . . . : Disabled
    
    Ethernet adapter Router Connection:
    
       Connection-specific DNS Suffix  . : 
       Description . . . . . . . . . . . : Realtek RTL8139/810x Family Fast Ethernet NIC
       Physical Address. . . . . . . . . : 00-E0-1C-3D-08-0B
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 192.168.1.3(Preferred) 
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Default Gateway . . . . . . . . . : 
       NetBIOS over Tcpip. . . . . . . . : Enabled
    
    Ethernet adapter LAN Connection:
    
       Connection-specific DNS Suffix  . : 
       Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
       Physical Address. . . . . . . . . : 00-30-67-09-39-ED
       DHCP Enabled. . . . . . . . . . . : No
       Autoconfiguration Enabled . . . . : Yes
       IPv4 Address. . . . . . . . . . . : 192.168.0.1(Preferred) 
       Subnet Mask . . . . . . . . . . . : 255.255.255.0
       Default Gateway . . . . . . . . . : 0.0.0.0
       NetBIOS over Tcpip. . . . . . . . : Enabled

  2. #2
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    You are in bridge mode. In the bridge mode when the dsl drops wan shows connected status but if you try to disconnect it will take time as it can't connect to pppoe server. post your modem stats if line drops frequently make a complaint to the bsnl.

  3. #3
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    SNR Margin (dB) 7.7 24.0
    Attenuation (dB) 41.0 23.5
    see this......wait checking for link.

    http://i51.tinypic.com/2441h0y.jpg
    2.
    try PPPoE mode. You have tariff plan.
    3.
    Modem appears to be similar to New UT300r2u or Beetel 220BX.
    4.
    try google dns
    8.8.8.8 and 8.8.4.4

  4. #4
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    @mvb4u, thanks for info, but which modem stats ?
    u mean this ?

    img543.imageshack.us/img543/3411/20101009115247.jpg


    @essbebe, yes i already know that, but its really varies alot, at present snr is changing at each refresh from 5.3 Db to 6.5 db, which is too low
    sometimes it goes upto 15 or 20 also, like when i called bsnl last time, it performs very well in front of them so they can't really decide what to do in this matter, they just change pairs and pairs and pairs... they have no clue !!
    Last edited by THiS; 9th October 2010 at 12:27 PM.

  5. #5
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    I mean SNRMargin and Line attenuation which were posted by earlier I didn't noticed, to have a stable dsl connection your SNRMargin should be above 12db but your line has poor SNRMargin figures insist on the line staff to show consistent SNRMargin above 12db.

  6. #6
    Junior Member v.Na5h's Avatar
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    Same problem!!!!

    Still no solution
    | BSNL HOME 500 | D: 212KB/s - U: 76KB/s |

  7. #7
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    1.There is no further feedback from other posts./users.
    2.From the ipconfig /all data provided by@THIS
    (a)the DNS servers appear to be from Delhi. .
    DNS change was recommended.

    (b)also to check cause of poor snr values.

    3.

    What is the error message you get error 651 etc ?
    4.
    when connection is lost modem system log can be checked to find out how connecction failed at that particular time.>
    5.
    Mention the modem/model/make/number for records.

  8. #8
    Junior Member v.Na5h's Avatar
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    Quote Originally Posted by essbebe View Post
    What is the error message you get error 651 etc ?

    no error message...when u redial it after diconnection there is no response at all..as it already shows connected
    neither can u disconnect it

    4.
    when connection is lost modem system log can be checked to find out how connecction failed at that particular time.>

    i dont mind the discn. the only thing i want is that i should be able to reconnect it afterwards

    sometimes windows show dial-up connection is connected but its not, when i try to disconnect it, it won't, finally means the whole windows dial-up software/thingy/api/system (whatever) hangs

    so no network problem here
    Last edited by v.Na5h; 9th May 2011 at 07:31 PM. Reason: Automerged Doublepost
    | BSNL HOME 500 | D: 212KB/s - U: 76KB/s |

  9. #9
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    5.
    Can you post screenshot (jpg)of the Dialer window as annexure ?

    6.
    As I am On "Always On" PPPoE tried to set up. "Dialer"and experienced same problem. .Windows 7 Professional.

    7.
    Will set up another modem for "Bridged " mode and feedback later.

    Last edited by essbebe; 10th May 2011 at 01:02 AM.

  10. #10
    Junior Member cyberboy_909's Avatar
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    BSNL details:
    plan 750 unlimited
    speed 2mbps ( 220 KB/sec all the time)
    is thr any such plan exists ?? as per my knowledge , plan 750 has unlimited usage with 512 Kbps bandwidth( 64 KBps ) bt not 2Mbps(220 KB/sec all the time)

    .:Unlimited Home Only:.

    and fr the problem u stated chk out if u hv any joints in our telephone line ( from pole to ur home )
    Last edited by cyberboy_909; 10th May 2011 at 02:01 PM.

  11. #11
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    Windows 7 professional SP1..
    Set up "Dialer" mode"
    seems ok.
    (1) clicked the "wifi icon" in Taskbar and selected
    "Dialup and VPN"
    "Broadband LAN" "connect" to get the dialer window.
    seems no problem.
    (2)Also created shortcut in Desktop.


    Para two:
    Ipconfig /all shows auto selected Ip address 169.xx.xx.xx.
    "obtain Ip address automatically " selected.
    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Marvell Yukon 88E8055 PCI-E Gigabit Ether
    net Controller
    Physical Address. . . . . . . . . : 00-1D-BA-1C-4A-18
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Autoconfiguration IPv4 Address. . : 169.254.134.10(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.0.0
    Default Gateway . . . . . . . . . :
    NetBIOS over Tcpip. . . . . . . . : Enabled
    Never used dialer mode due to VOIP/ wifi setup.
    Changing modem for normal setup.

    Dialup window available even when connected in wifi mode or "always On " mode.


    When selected error 651 etc.
    Last edited by essbebe; 10th May 2011 at 07:46 PM.

  12. #12
    Platinum Member whitestar_999's Avatar
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    Autoconfiguration IPv4 Address. . : 169.254.134.10(Preferred)
    169.254.x.x is the default ip to be set by xp/vista/win 7 if you setup the tcp/ip properties in automatic ip mode for the very first time.the way to do it is set the ip to manual,select an ip say 192.168.2.4 & apply.after that you can change it back to automatic & windows will remember to get the ip in the earlier selected range only i.e.192.168.2.x.

    Dialup window available even when connected in wifi mode or "always On " mode.
    this is also expected.on win 7 multiple network connection are expected so it is designed in this way.e.g.a wifi connection as your primary connection while a dialup as backup.the reason why win 7 failed to recognize that both connections use same modem & thus should give a modem busy error might be because of the presence of wifi router alongwith modem confusing win 7.
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  13. #13
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    There is a"BUG" as reported when we try to use "Dialer" mode.
    Stimulating conditions again later.
    System freezes as reported.

  14. #14
    Platinum Member whitestar_999's Avatar
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    @essbebe,there should be an option"use this as my default internet connection"in dialup connection properties.uncheck it & then see if it helps.also see that IE is not running while doing these tests.if any doubt then check in task manager process iexplore.exe is not running.
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  15. #15
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    use this as my default internet connection in dialup connection properties....
    Not available. Searching ......
    IE not used ( not active) .l.... will recheck Internet options /connections
    later.
    India Broadband Forum

    in Windows 7. Network settings are different.
    http://www.indiabroadband.net/attach...1&d=1305029906

    Last edited by essbebe; 10th May 2011 at 07:46 PM.

  16. #16
    The Wizard meetdilip's Avatar
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    @ OP

    Why not try PPPoE ? Is there any particular interest in bridge mode ?

  17. #17
    Platinum Member whitestar_999's Avatar
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    @essbebe,in network & sharing center,on left hand side click on option"change adapter settings".on the new page all network connections will be listed(active/inactive).right click on bsnl dialup connection & you will get option either "set default" or "cancel default".

    P.S.@meetdilip,no particular interest in bridge mode even though i prefer it.i am merely interested in this problem.
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  18. #18
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    Problem Dialup hangs
    See Post No 6.
    Stimulating Dialer Mode in Windows 7 Pro.
    As I have VOIP/WIFI usage my modem is set for PPPoE mode only
    ( userID/PW stored/entered in wan page ).
    The dialer window in Post No appears if selected even in this mode.
    If I click connect, system freezes.
    The "Monitor+Fork"icon is common.


    For wifi different Icon.

    @whitestar_999
    Please see FAQ ( at the end) in tutorial link. already seen .
    Question How can I delete a connection?

    Answer Open Network and Sharing Center, click Change adapter settings and right click on a connection you want to delete and click Delete.
    Assume Dialer mode is made in Windows 7. No other mode. wifi'"always On"
    and give comment/s for problem above.

  19. #19
    Platinum Member whitestar_999's Avatar
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    @essbebe,so what was the result of switching between default & cancel default option for the bsnl dialup connection.
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  20. #20
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    @v-na5h
    any update?
    In modem have you selected "Bridged" mode?


    @whitestar_999

    Problem is this. Post No 8.
    sometimes windows show dial-up connection is connected but its not, when i try to disconnect it, it won't, finally means the whole windows dial-up software/thingy/api/system (whatever) hangs

    switching between default & cancel default .....
    Wanminport connection . disabled.
    http://www.indiabroadband.net/attach...1&d=1305031670
    Last edited by essbebe; 10th May 2011 at 07:45 PM.

  21. #21
    Platinum Member whitestar_999's Avatar
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    @essbebe,since i don't have a wireless router this the best i can do to test.i connected modem set in pppoe to laptop running win 7 via lan.then i created a dialer for bsnl.after i got connected through lan port showing connectivity as internet in system tray i dialled the bsnl dialup connection.after some seconds i got the error 651 with countdown of 60 seconds to redial.i clicked cancel.no hang ups during this process.btw the pic in your previous post show a green tick over the wan miniport(pppoe)which means it is set as your default connection.you can right click to cancel default.this problem of dialer hanging on win 7 i only experienced while i was using airtel gprs dialup.if you can reproduce this error please give detailed conditions & if possible only using modem & no wifi so i can reproduce it too.
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  22. #22
    Junior Member v.Na5h's Avatar
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    Quote Originally Posted by essbebe View Post
    @v-na5h
    any update?
    In modem have you selected "Bridged" mode?
    a lots of people have this problem..
    maybe a windows bug
    only option is to update it to sp1..and hope the bug is rectified there

    yeah i have selected bridged mode
    | BSNL HOME 500 | D: 212KB/s - U: 76KB/s |

  23. #23
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    windows 7 SP1
    can you post ipconfig /all data as given in Post No 1 ?
    In modem select Obtain DNS automatically.
    Omit all tunnel bluetooth data.
    Only PPP and ethernet.

    Mine : IPV4 address : already discussed.
    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Marvell Yukon 88E8055 PCI-E Gigabit Ether
    net Controller
    Physical Address. . . . . . . . . : 00-1D-BA-1C-4A-18
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Autoconfiguration IPv4 Address. . : 169.254.134.10(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.0.0
    Default Gateway . . . . . . . . . : *Blank!
    NetBIOS over Tcpip. . . . . . . . : Enabled
    PS: after setting modem in Bridging mode, unable to access modem settings.
    tried. 192.168.1.1 also dynamic Ip address from net ! checking up.
    Internet working.
    Last edited by essbebe; 10th May 2011 at 09:13 PM.

  24. #24
    Junior Member v.Na5h's Avatar
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    Quote Originally Posted by essbebe View Post
    windows 7 SP1

    PS: after setting modem in Bridging mode, unable to access modem settings.
    tried. 192.168.1.1 also dynamic Ip address from net ! checking up.
    Internet working.
    yeah that happens ...just reset the modem...

    i always use bridged mode...and till now havent figured out how to open the modem page
    i always reset the modem to acess the page...
    | BSNL HOME 500 | D: 212KB/s - U: 76KB/s |

  25. #25
    Platinum Member mickey's Avatar
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    i think this "freeze" happens with every modem on windows..
    dont know what the....
    job takes the child away.

  26. #26
    Platinum Member whitestar_999's Avatar
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    Quote Originally Posted by mickey View Post
    i think this "freeze" happens with every modem on windows..
    dont know what the....
    i never faced any such issue on xp & win 7.

    Quote Originally Posted by v.Na5h View Post
    yeah that happens ...just reset the modem...

    i always use bridged mode...and till now havent figured out how to open the modem page
    i always reset the modem to acess the page...
    it is essbebe you are talking about!
    Is God willing to prevent evil, but not able? Then he is not omnipotent.
    Is he able, but not willing? Then he is malevolent.
    Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?

  27. #27
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    Ok.
    I have gone back to "AlwaysOn" PPPoE mode in Modem
    {userid/pw stored/entered in WAN Page of modem }
    and restored my wifi /voip connections as usual.

    I did not have any problem in above settings for past one year.

    Para two:
    For members/users who read only the last post !!!
    Problem posted by @v.Na5H in Post No 8
    sometimes windows show dial-up connection is connected but its not, when i try to disconnect it, it won't, finally means the whole windows dial-up software/thingy/api/system (whatever) hangs
    Last edited by essbebe; 11th May 2011 at 01:07 AM.

  28. #28
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    @v.Na5h.
    "Dialer mode" working without any problem.
    can also acccess the modem settings. 192.168.1.1 without reset.
    stable connection.
    Mode: ADSL2+
    Line Coding: Trellis On
    Status: No Defect
    Link Power State: L0

    Downstream Upstream
    SNR Margin (dB): 32.1 28.6
    Attenuation (dB): 18.5 9.9
    Output Power (dBm): 11.8 0.0
    Attainable Rate (Kbps): 22952 876
    Rate (Kbps): 2042 507
    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Users\Kavika>ipconfig /all

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : KK-SONY
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    PPP adapter Broadband Dialup:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Broadband Dialup
    Physical Address. . . . . . . . . :
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    IPv4 Address. . . . . . . . . . . : 117.193.33.178(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.255
    Default Gateway . . . . . . . . . : 0.0.0.0
    DNS Servers . . . . . . . . . . . : 218.248.255.147
    218.248.255.146
    NetBIOS over Tcpip. . . . . . . . : Disabled

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 00-1E-3D-EC-F7-12
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Marvell Yukon 88E8055 PCI-E Gigabit Ether
    net Controller
    Physical Address. . . . . . . . . : 00-1D-BA-1C-4A-18
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv4 Address. . . . . . . . . . . : 192.168.1.2(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Wednesday, May 11, 2011 1:05:59 AM
    Lease Expires . . . . . . . . . . : Thursday, May 12, 2011 1:05:59 AM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DNS Servers . . . . . . . . . . . : 192.168.1.1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Para two:

    UPDATE:
    Stimulated disconnection.
    Dial up reconnected automatically.
    Last edited by essbebe; 11th May 2011 at 09:25 AM.

  29. #29
    Platinum Member mickey's Avatar
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    Quote Originally Posted by essbebe View Post
    sometimes windows show dial-up connection is connected but its not, when i try to disconnect it, it won't, finally means the whole windows dial-up software/thingy/api/system (whatever) hangs
    i am also telling about the same thing.. but i think, this happens because of some hardware failure in general.. the computer thinks that the modem is connected but the modem isnt.
    job takes the child away.

  30. #30
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    Quote Originally Posted by mickey View Post
    i am also telling about the same thing.. but i think, this happens because of some hardware failure in general.. the computer thinks that the modem is connected but the modem isnt.

  31. #31
    Junior Member v.Na5h's Avatar
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    that dial-up hang doesnt happen always
    sometimes it get reconnected...

    it just occurs ocassionally
    | BSNL HOME 500 | D: 212KB/s - U: 76KB/s |

  32. #32
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    Quote Originally Posted by v.Na5h View Post
    that dial-up hang doesnt happen always
    sometimes it get reconnected...

    it just occurs ocassionally
    May be the problem was due to use of Download Manager
    schedulers etc ?

    Everytime the link failed, system automatically redialed. and reconnected.
    i dont mind the discn. the only thing i want is that i should be able to reconnect it afterwards
    Post No 8.

    May be I again selected "connect" sometimes.
    The System did not hang or freeze ..

  33. #33
    Junior Member
    Join Date
    Jan 2011
    Posts
    5

    Default

    Many are still facing this problem, including me:

    h t t p://answers.microsoft.com/en-us/windows/forum/windows_7-networking/if-my-adsl-connection-disconnected-by-the-provider/4c6ee182-620b-4283-9f3a-dabe38b269a6


    Steps to recreate:

    1. ADSL Modem: WAN Type -> Bridged Mode

    2. User name/pass dialed through WAN Miniport (PPPOE) / rasdial

    3. Connection established / internet access available

    4. Link fails on ADSL modem a few times / ADSL Link down

    5. WAN Miniport (PPPOE) adapter hangs

    6. WAN Miniport (PPPOE) adapter doesn't disconnect on clicking the disconnect button. WAN Miniport (PPPOE) adapter doesn't show reconnect dialog, shows connected even when there's no internet connectivity. Cannot be disconnected using rasdial.

    7. Only restarting the PC, solves it.

    OS: Win7 32 SP1 + latest updates

    Its very random, happens only after ADSL link fails 'n' no. of times.

  34. #34
    LEARNER
    Join Date
    Aug 2007
    Posts
    15,263

    Default

    Please check here settings.


    I am On PPPoE mode,
    I clicked connect , and after error 651 redial etc
    In adapter settings
    wan miniport shows disconnecting!
    Ethernet connection "connect" greyed.cannot be clicked !!
    I am connected to Internet and surfing !!!

  35. #35
    Bronze Member
    Join Date
    May 2009
    Posts
    139

    Default

    On your modem, there will be a light called something like DSL or ADSL or maybe something else. Point being, when you unplug the cable from this modem, this light will go out. Does it go out when you get the disconnection / pppoe connectoid hanging???

    Try these:
    >> plug in the modem into the phone jack without a splitter does it improve the connection?
    >> unplug all other devices on the phone line, and keep only the adsl modem connected, does this improve the situation?
    >> is your modem kept near a 2.4ghz device such as a microwave oven or a cordless telephone or a CRT tv/monitor? move it away from that and see if it improves the situation
    >> get another modem from a friend's, and try using that for a couple of hours / days?
    >> check out the cable that comes from the DP to your home, does it have more than one joint? are the leads spaced far enough to prevent a short circuit?

    being an engineer yourself, you can logically determine where the problem lies, after going through the steps above.

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