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uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed. |
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#1
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![]() Have posted this on ADSLGuide forum earlier but would welcome any comments from this NG. After many months of trying to get ADSL, (I currently have Home Highway), I approach BT again after getting an "amber" signal on my ISDN digital line and they tell me they are coming to connect everything on 17th December. On a recent previous attempt I gleaned from them that my line apparently registers 62.3 db noise and I would like to hear from anybody who has any knowledge of ADSL with that level of noise. My feelings are that it is only a little noisier than the 60db level for extended reach and should not degrade too much. Am I right to feel delighted with my news or will this prove to be another disappointment?? (It is Christmas after all!!) Many thanks J Lowe |
#2
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![]() "John Lowe" wrote in message ... Have posted this on ADSLGuide forum earlier but would welcome any comments from this NG. After many months of trying to get ADSL, (I currently have Home Highway), I approach BT again after getting an "amber" signal on my ISDN digital line and they tell me they are coming to connect everything on 17th December. On a recent previous attempt I gleaned from them that my line apparently registers 62.3 db noise and I would like to hear from anybody who has any knowledge of ADSL with that level of noise. My feelings are that it is only a little noisier than the 60db level for extended reach and should not degrade too much. Am I right to feel delighted with my news or will this prove to be another disappointment?? (It is Christmas after all!!) Many thanks J Lowe I was told I was well over 60db when I was turned down (can't get anyone to tell me exact figure). You'd think that would mean 70 or something, but as it's a logarithmic scale I think 62.3 would be nearly double 60db(?) |
#3
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![]() John Lowe wrote: Have posted this on ADSLGuide forum earlier but would welcome any comments from this NG. After many months of trying to get ADSL, (I currently have Home Highway), I approach BT again after getting an "amber" signal on my ISDN digital line and they tell me they are coming to connect everything on 17th December. On a recent previous attempt I gleaned from them that my line apparently registers 62.3 db noise and I would like to hear from anybody who has any knowledge of ADSL with that level of noise. My feelings are that it is only a little noisier than the 60db level for extended reach and should not degrade too much. Am I right to feel delighted with my news or will this prove to be another disappointment?? (It is Christmas after all!!) I thought the 60dB limit refers to attenuation (loss) and the the signal-to-noise limit is something else? |
#4
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![]() John Lowe wrote: Have posted this on ADSLGuide forum earlier but would welcome any comments from this NG. After many months of trying to get ADSL, (I currently have Home Highway), I approach BT again after getting an "amber" signal on my ISDN digital line and they tell me they are coming to connect everything on 17th December. On a recent previous attempt I gleaned from them that my line apparently registers 62.3 db noise and I would like to hear from anybody who has any knowledge of ADSL with that level of noise. My feelings are that it is only a little noisier than the 60db level for extended reach and should not degrade too much. Am I right to feel delighted with my news or will this prove to be another disappointment?? (It is Christmas after all!!) Many thanks J Lowe If nothing has changed since the last time it would appear that you are going to fail the line test again. |
#5
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![]() Zapp Brannigan wrote: John Lowe wrote: Have posted this on ADSLGuide forum earlier but would welcome any comments from this NG. After many months of trying to get ADSL, (I currently have Home Highway), I approach BT again after getting an "amber" signal on my ISDN digital line and they tell me they are coming to connect everything on 17th December. On a recent previous attempt I gleaned from them that my line apparently registers 62.3 db noise and I would like to hear from anybody who has any knowledge of ADSL with that level of noise. My feelings are that it is only a little noisier than the 60db level for extended reach and should not degrade too much. Am I right to feel delighted with my news or will this prove to be another disappointment?? (It is Christmas after all!!) Many thanks J Lowe I think your statement of 63db is only slightly more than 60db is slightly flawed, it's a non-linear scale. 62.3db is ALOT noiser than 60db. On a semi-related note. I got my broadband enabled today, and looking in my router stats, it shows the following: SNR Margin 33.5 Does this value relate to the line noise of 60db anyhow? is 33.5 any good? Well if it's accurate you can have a 2meg circuit, but as to how it will actually affect your service.......very little if anything |
#6
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![]() On Tue, 9 Dec 2003 11:03, "Kráftéé" wrote: If nothing has changed since the last time it would appear that you are going to fail the line test again. don't you ever trim qhat you quote ? A couple of lines after some lengthy quoting isn't ideal, IMHO :-) Peter M. |
#7
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![]() my stats a Downstream Upstream SNR Margin 22.3 31.0 dB Line Attenuation 56.1 31.5 dB Errored Seconds 45 1 Loss of Signal 0 0 Loss of Frame 0 0 CRC Errors 59 1 Data Rate 576 288 kbps Latency FAST FAST So there is no hope for me |
#8
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![]() Peter Morgan - 0870 432 9631 wrote: On Tue, 9 Dec 2003 11:03, "Kráftéé" wrote: If nothing has changed since the last time it would appear that you are going to fail the line test again. don't you ever trim qhat you quote ? A couple of lines after some lengthy quoting isn't ideal, IMHO :-) Peter M. Pity about your caps & spellchecker isn't it... |
#9
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![]() NAZGUL wrote: my stats a Downstream Upstream SNR Margin 22.3 31.0 dB Line Attenuation 56.1 31.5 dB Errored Seconds 45 1 Loss of Signal 0 0 Loss of Frame 0 0 CRC Errors 59 1 Data Rate 576 288 kbps Latency FAST FAST So there is no hope for me It would help if you hadn't snipped what you are replying to. As it stands it looks ok for RADSL but nothing else, but what are you alluding to?.... Remember this isn't a chat room & the order of messages, the retention of postings & even the loss of postings will differ from one server to another so including what you are replying to _IS_ a very good idea, despite what certain posters attempt to say... |
#10
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![]() In article , Kráftéé writes Zapp Brannigan wrote: John Lowe wrote: J Lowe I think your statement of 63db is only slightly more than 60db is slightly flawed, it's a non-linear scale. 62.3db is ALOT noiser than 60db. not if you're a human:- (perception goes as log(stimulus) - Weber-Fechner law is it?) and if you're a telecomms engineer you'll know that:- max bit rate (per Hz of bandwidth) goes as log(1+signal-to-noise ratio) so decibels is what you want for both sums -- robert w hall |
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