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    30 minutes of no connection at night?

    This is a discussion on 30 minutes of no connection at night? within the Sky Broadband help forums, part of the Sky Broadband help and support category; I appear to be seeing a regular 20-30 minute period around 10 to 10:30pm every night when my router drops ...

    1. #1
      gregh's Avatar
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      30 minutes of no connection at night?

      I appear to be seeing a regular 20-30 minute period around 10 to 10:30pm every night when my router drops the connection.

      Comes back fine, but wondered if anyone else was seeing anything similiar?

      regards,

      Greg


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    3. #2
      Stumpy's Avatar
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      Re: 30 minutes of no connection at night?

      Ours tends to happen around 8.30-9.30 ish ...

    4. #3
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      Re: 30 minutes of no connection at night?

      If this happens at around the same time every night it is probably because it is the peak usage time for your area.

    5. #4
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      Re: 30 minutes of no connection at night?

      Yup, that's what I reckoned. I don't mind so much if I can get reconnected straight away ... its the random Error 300's where I can be off for anything between 30 mins to several hours that are irritating, to say the least.

      But surely, getting disconnected at peak times shows that we do not have enough capacity in the exchange, which therefore needs upgrading?

    6. #5
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      Re: 30 minutes of no connection at night?

      You could post your detailed stats using the proceedure below to see if they show up anything obvious, these problems can be due to falling noise margins which can sometimes be improved upon.

      Go to the utility web site:Sky Netgear DG834GT utility version 0.4 Click the “Get” detailed modem stats button and click “OK”.
      Enter the router login user name and password.
      At the next screen, click the back button on your browser.
      Click the “Download” netgear.cfg button.
      What you do next depends on your operating system. On Windows XP, click the “Save” button to save the file to your hard disk. (If you click “Open”, you may find that the file association is one that doesn’t handle carriage returns the same way as the router, hence the reason for saying “Save”.)
      Open the file in WordPad (not notepad).

    7. #6
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      Re: 30 minutes of no connection at night?

      thanks, here are the detailed stats:

      /usr/sbin/adslctl: ADSL driver and PHY status
      Status: Showtime Channel: INTR, Upstream rate = 768 Kbps, Downstream rate = 4736 Kbps
      Link Power State: L0
      Mode: G.DMT
      Channel: Interleave
      Trellis: ON
      Line Status: No Defect
      Training Status: Showtime
      Down Up
      SNR (dB): 5.8 12.0
      Attn(dB): 47.0 28.0
      Pwr(dBm): 19.3 12.5
      Max(Kbps): 5312 1056
      Rate (Kbps): 4736 768
      G.dmt framing
      K: 149(0) 25
      R: 16 16
      S: 1 8
      D: 64 8
      ADSL2 framing
      MSGc: 1 1
      B: 149 25
      M: 1 8
      T: 1 1
      R: 16 16
      S: 1.1066 8.6153
      L: 1200 208
      D: 64 8
      Counters
      SF: 367395 367393
      SFErr: 359 0
      RS: 24982864 3122840
      RSCorr: 16682272 22
      RSUnCorr: 1838 0

      HEC: 252 0
      OCD: 2 0
      LCD: 0 0
      Total Cells: 69758631 0
      Data Cells: 240663 0
      Drop Cells: 0
      Bit Errors: 0 0

      ES: 325 0
      SES: 26 0
      UAS: 23 0
      Total time = 1 hours 44 min 36 sec
      SF = 367395
      CRC = 359
      LOS = 29
      LOF = 0
      ES = 325
      Latest 1 day time = 1 hours 44 min 36 sec
      SF = 367395
      CRC = 359
      LOS = 29
      LOF = 0
      ES = 325
      Latest 15 minutes time = 14 min 36 sec
      SF = 51578
      CRC = 202
      LOS = 1
      LOF = 0
      ES = 179
      Previous 15 minutes time = 15 min 0 sec
      SF = 52931
      CRC = 54
      LOS = 8
      LOF = 0
      ES = 60
      Previous 1 day time = 0 sec
      SF = 0
      CRC = 0
      LOS = 0
      LOF = 0
      ES = 0
      15 minutes interval [-30 min to -15 min] time = 15 min 0 sec
      SF = 52930
      CRC = 36
      LOS = 3
      LOF = 0
      ES = 34
      15 minutes interval [-45 min to -30 min] time = 15 min 0 sec
      SF = 52989
      CRC = 23
      LOS = 4
      LOF = 0
      ES = 24
      15 minutes interval [-60 min to -45 min] time = 15 min 0 sec
      SF = 52931
      CRC = 21
      LOS = 4
      LOF = 0
      ES = 17

    8. #7
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      Re: 30 minutes of no connection at night?

      Gregh .. I've just realised that you are on one of the unbundled packages. This doesn't bode well for me as I was assured by "customer services" that once I finally get transferred onto the LLU package, I would no longer have any disconnection problems .... hmmm.

    9. #8
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      Re: 30 minutes of no connection at night?

      You have got CRC errors and a very low noise margin.

      SF = 51578
      CRC = 202
      LOS = 1
      LOF = 0
      ES = 179

      Rule of thumb is CRC's should not exceed 0.1% of SF's transmitted so during the 15 minute period above your CRC's shouldn't ave exceeded 51, this is only a rough guide but does show you have problems.
      Your Noise Margin or SNR is 5.8, anything below 6 is likely to cause disconnections. I wouldn't mind betting at busy times of the day i.e. evenings it probably goe's down further and your errors prob go up.

      Anyway first step is to plug your router into the test socket behind the face plate of your BT master socket assuming it is an NTE5 which is the first socket as the line comes in. This will disconnect any extension wiring and connect you direct to the BT line hence isolating the fault to the BT line or your internal wiring. Run the router there for a few hours using the connection fairly heavily then take the stats again to see if there is any inprovement.
      Last edited by Koala5; 27-06-07 at 11:38 AM.

    10. #9
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      Re: 30 minutes of no connection at night?

      Quote Originally Posted by Koala5 View Post
      Anyway first step is to plug your router into the test socket behind the face plate of your BT master socket assuming it is an NTE5 which is the first socket as the line comes in. This will disconnect any extension wiring and connect you direct to the BT line hence isolating the fault to the BT line or your internal wiring.

      Yup I have the test socket on the master socket, how long do I need to leave it plugged in there, and do I need to be using the system? ie can I plug it in and go out for a few hours??

      thanks so far!

      regards,
      greg

    11. #10
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      Re: 30 minutes of no connection at night?

      Quote Originally Posted by gregh View Post
      Yup I have the test socket on the master socket, how long do I need to leave it plugged in there, and do I need to be using the system? ie can I plug it in and go out for a few hours??

      thanks so far!

      regards,
      greg
      Yes as long as the connection is kept busy i.e. download or something, if the connection is idle/no activity then the errors may not occur.

     

     
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