<font size=2 face="sans-serif">This was one I stumbled on the web sometime
back, I can't find the back reference for it :\<br>
<br>
</font><font size=3><b>SNR is Signal to Noise Ratio</b> (aka Noise Margin
or Signal to Noise Margin)<br>
Relative strength of the DSL signal to Noise ratio. 6dB is the lowest dB
manufactures specify for modem to be able to synch. In some instances interleaving
can help raise the noise margin to an acceptable level. The higher the
number the better for this measurement.</font>
<p><font size=3>6dB or below is bad and will experience no synch or intermittent
synch problems<br>
7dB-10dB is fair but does not leave much room for variances in conditions<br>
11dB-20dB is good with no synch problems<br>
20dB-28dB is excellent<br>
29dB or above is outstanding</font>
<p><font size=3><b>Loop Att. is Line Attenuation</b><br>
Measure of how much the signal has degraded between the DSLAM and the modem.
Maximum signal loss recommendation is usually about 60dB. The lower the
dB the better for this measurement.<br>
20dB and below is outstanding<br>
20dB-30dB is excellent<br>
30dB-40dB is very good<br>
40dB-50dB is good<br>
50dB-60dB is poor and may experience connectivity issues<br>
60dB or above is bad and will experience connectivity issues</font>
<p><font size=3><b>Output Power</b><br>
How much power modem (upstream) or DSLAM (downstream) is using. Maximum
recommended is about 15dB. The lower the power the better for this measurement.</font><font size=2 face="sans-serif"><br>
<br>
Cheers,<br>
Adam<br>
</font>
<br>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">Travis <mallik@internode.on.net></font>
<br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">Jason Reid <jasereid@gmail.com>,
</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Cc:
</font><font size=1 face="sans-serif">"AusNOG@lists.ausnog.net"
<AusNOG@lists.ausnog.net></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">30/09/2014 05:47 PM</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">Re: [AusNOG]
DSL Line Stats</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Sent by:
</font><font size=1 face="sans-serif">"AusNOG"
<ausnog-bounces@lists.ausnog.net></font>
<br>
<hr noshade>
<br>
<br>
<br><font size=3>I always thought this was a pretty good explaination:<br>
</font><font size=3 color=blue><u><br>
</u></font><a href=http://www.kitz.co.uk/adsl/linestats.htm><font size=3 color=blue><u>http://www.kitz.co.uk/adsl/linestats.htm</u></font></a><font size=3>
</font>
<br>
<br><font size=3>On 25 September 2014 17:12, Jason Reid <</font><a href=mailto:jasereid@gmail.com target=_blank><font size=3 color=blue><u>jasereid@gmail.com</u></font></a><font size=3>>
wrote:</font>
<br><font size=3>I'd also be interested in this.</font>
<br>
<br><font size=3>Regards</font>
<br><font size=3>Jason Reid</font>
<br><font size=3><br>
<br>
On Thursday, 25 September 2014, Jacob Kino <</font><a href=mailto:jacob@interconnekt.com.au target=_blank><font size=3 color=blue><u>jacob@interconnekt.com.au</u></font></a><font size=3>>
wrote:</font>
<br><font size=3>Hi All,</font>
<p><font size=3> </font>
<p><font size=3>Someone in our team has asked for a good document to explain
DSL line stats, primarily in the context of interpreting wholesale DSL
line stats reports.</font>
<p><font size=3> </font>
<p><font size=3>I had a look at our carrier’s product definition document
but it doesn’t seem to speak much about layer 1, wondering if anyone had
a good reference they could point to, ideally that has some real world
reference values in an Australian context.</font>
<p><font size=3> </font>
<p><font size=3>Cheers,</font>
<p><font size=3> </font>
<p><font size=3>Jacob</font>
<p><font size=3> </font>
<p><font size=3><b>Jacob Kino</b></font><font size=1><br>
<br>
<br>
<br>
Suite 5, 25-27 Izett St<br>
Prahran, VIC, 3181<br>
Hi <b><br>
e-mail </b>jacob@interconnekt.com.au
<b><br>
phone</b> 1300 852 842<b><br>
fax </b> 03 9011 6298<b><br>
www </b> </font><a href=http://www.interconnekt.com.au/ target=_blank><font size=1 color=blue><u>www.interconnekt.com.au</u></font></a><font size=1>
</font>
<p><font size=3> </font>
<p><font size=3 color=#8f8f8f><br>
<br>
-- <br>
Jason Reid</font><font size=3><br>
<br>
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