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Thread: I lose my broadband connection during peak times

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    Almost in control. autopilot's Avatar
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    I lose my broadband connection during peak times

    I have a very on/off relationship with my broadband.

    Almost every day it goes down at about 5:30ish and is off all evening until the early hours of the morning. During the day time it's pretty stable.

    An engineer came out and said it was due to the line length. This seems odd to me, yes it is long, but if it was purely a line length issue then surely it would go off at other times. The fact that it's only peak times makes me wonder if its something to do with how busy the exchange gets.

    The BT engineers that come around never really seem to now much about ADSL. He suggested it was re-graded to "IPmax" (i had to inform him that it's actually called ADSL MAX).

    Does anyone here now much about this kind of thing? Would going onto Max help? Any idea why it's only during 'peak' times that it goes down?

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    HEXUS.social member Agent's Avatar
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    Whats your atten. / SNR values in the daytime ?
    Quote Originally Posted by Saracen View Post
    And by trying to force me to like small pants, they've alienated me.

  3. #3
    adam1701
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    i had problems similar to that... where the speed would be rubbish in the evenings, like 512kbps rather then 8mb.

    i spent agies on the phone to my isp and eventually they referred it to BT who fixed it within 24 hours.

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    Almost in control. autopilot's Avatar
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    Quote Originally Posted by Agent View Post
    Whats your atten. / SNR values in the daytime ?
    The engineer did mention it, but i did not write it down. Anyway of finding out?

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    Network|Geek kidzer's Avatar
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    My router tells me, via a telnet session, it's probably avaliable via the web interface too, but telnet is easier for me.

    Have a look in your router/modems web interface, it might list it there.

    Good luck
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    Does he need a reason? Funkstar's Avatar
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    most routers should show it, my Netgear DG834G does (main page, show statistics. in case anyone is interested).

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    Network|Geek kidzer's Avatar
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    and if your using a voyager 205, you can find it via telnet by doing the following:

    Start -> Run -> type 'cmd' and hit enter -> type 'telnet' and hit enter -> type 'o [router IP here, e.g. 192.168.1.1] -> enter your username and pw -> type 'get dsl params' and the values will be there.

    Not sure if anyone has a Voyager 205, but hopefully it'll help someone out
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    Almost in control. autopilot's Avatar
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    I have a BT Home Hub, just had a poke around but cant see it anywhere.

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    The firmware on the HomeHub is very limited...

    As always with BT you have to tell them at least 3 times before they recognise there is a problem...

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    Get this, if you have a crap SNR environmental factors like flourescent bulbs can cause your connection to crap out.

    Try to notice if your loss of service coincides with anything locally being switched on or changed.

    If you have a low SNR your sync rate can be lowered to bring the SNR up and stop your disconnections....some ADSL is bettter than no ADSL.

    And you are right about BT engineers, they do the bare minimum unless you force them to do stuff by not letting them close a fault and telling them you are not happy with the line.

    Bottom line is you have to complain more to BT to get more checks on your line done.

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    Almost in control. autopilot's Avatar
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    I have some info regarding att. and SNR. It was in the event log off my home hub when the connection was re-established.

    xDSL linestate up (downstream: 576 kbit/s, upstream: 288 kbit/s; output Power Down: 14.0 dBm, Up: 11.5 dBm; line Attenuation Down: 63.5 dB, Up: 31.5 dB; snr Margin Down: 3.5 dB, Up: 7.0 dB)

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    Quote Originally Posted by autopilot View Post
    I have some info regarding att. and SNR. It was in the event log off my home hub when the connection was re-established.
    Your SNR is VERY low there. Generally less than 10 is a sure recipe for problems. I fint the SNR on my broadband gets worse at busier times. Do you know how far you are from the exchange?
    Your attenuation looks high aswell. Both those add up to a crap broadband service
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    that's poor mate.

    looks like you've already been put on a 512k profile which is the bare minimum for broadband. An SNR at 3.5db on the minimum rate is a poor show.

    as was said before 10db is considered the minimum although i have seen eu's work quite happily at 6 as they have good quality copper.

    BT need to run a line test with no equipment fitted and faceplate removed at your end.....i bet they find a fault on the line.

    if i was to stick my neck out i'd say you have a fault on the line which is seriously pulling down the signal, then some sort of atmospheric is killing it off completely.

    as you say, it can't be a long line issue as you have noticed it is pretty consistent about the time it goes off - long lines are the most random of faults.

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    forgot to add - for line attenuation your looking at anything above 50 and below 85 as being good.

    31.5 shows there is aproblem on your line.

    the attenuation is calculated from the measured resistances and capacitances of your line.

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    Almost in control. autopilot's Avatar
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    Although i am about 2k from my exchange, i now know my line length is 6.7km. From what i understand, that's very long. I might be screwed then

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    The late but legendary peterb - Onward and Upward peterb's Avatar
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    Quote Originally Posted by Augustus View Post
    forgot to add - for line attenuation your looking at anything above 50 and below 85 as being good.

    31.5 shows there is aproblem on your line.

    the attenuation is calculated from the measured resistances and capacitances of your line.
    Er no. Attenuation, which is measured in dBs, should be low, ie 33dB attenuation is considerably less than 50dB - the dB is a logarithmic scale, so an increase in attenuation by 3dB represents a halving of signal power. SNR (signal to noise ratio) should be high.

    (my figures are 17.5 loop attenuation, 28.5 SNR which supports 2Mb/s flawlessly - I'm about 1Km from my exchange))

    That said, it does look as if there is some sort of loss on your line, which should be escalated by your ISP to BT for investigation.
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