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<title>CRC/HEC errors and packet loss? in Canadian Broadband</title>
<link>http://www.dslreports.com/forum/r18431058</link>
<description></description>
<language>en</language>
<pubDate>Wed, 25 Nov 2009 05:56:00 EDT</pubDate>
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<item>
<title>Re: CRC/HEC errors and packet loss?</title>
<link>http://www.dslreports.com/forum/remark,18434141</link>
<description><![CDATA[<A HREF="/useremail/u/761126"><b>piotrick</b></A> : Thanks for the info diskace!<br><br>TilhasBB, I'm using a SpeedTouch 780WL.  Here are my line stats since rebooting the modem yesterday:<br><br> Link Information<br>    <br>Uptime: 1 day, 0:12:35 <br>Modulation: G.992.1 annex A <br>Bandwidth (Up/Down) [kbps/kbps]: 800 / 5.056 <br>Data Transferred (Sent/Received) [MB/MB]: 56,82 / 137,18 <br>Output Power (Up/Down) [dBm]: 11,5 / 19,5 <br>Line Attenuation (Up/Down) [dB]: 24,0 / 43,0 <br>SN Margin (Up/Down) [dB]: 14,0 / 10,5 <br>Vendor ID (Local/Remote): TMMB / ALCB <br>Loss of Framing (Local/Remote): 0 / 0 <br>Loss of Signal (Local/Remote): 0 / 0 <br>Loss of Power (Local/Remote): 0 / 0 <br>Loss of Link (Remote): 0 <br>Error Seconds (Local/Remote): 51 / 0 <br>FEC Errors (Up/Down): 0 / 0 <br>CRC Errors (Up/Down): 0 / 34.050 <br>HEC Errors (Up/Down): 0 / 13.702<br><br>I think I might try disconnecting all the phones this weekend to see how it goes.  Bell changed my exterior line over a year ago and put in a new demarc due to crackling on the line (and an eventual dead line as it actually broke).]]></description>
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<pubDate>Fri, 01 Jun 2007 19:32:39 EDT</pubDate>
</item>

<item>
<title>Re: CRC/HEC errors and packet loss?</title>
<link>http://www.dslreports.com/forum/remark,18431713</link>
<description><![CDATA[<A HREF="/useremail/u/589037"><b>diskace</b></A> : Just to complete, i think CRCs errors are more important to watch than HECs. CRCs use a more advanced method of checking for errors in data transmission.]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,18431713</guid>
<pubDate>Fri, 01 Jun 2007 12:36:08 EDT</pubDate>
</item>

<item>
<title>Re: CRC/HEC errors and packet loss?</title>
<link>http://www.dslreports.com/forum/remark,18431584</link>
<description><![CDATA[<A HREF="/useremail/u/589037"><b>diskace</b></A> : Yes, CRC errors mean the Cyclic redundancy check is not the same as sent by the remote host. Thus, the packets are corrupted or damaged and need to be re-received. This can lead to packet drop. It is normal to have a few CRC errors since communications is not 100% stable and lots of factors can affect transmission. Problems start when there is too much of them over a short period of time.<br><br>HEC errors are also important to watch. Header error checksum can also lead to packet drop.<br><br>You might want to test what TilhasBB suggested to see if it is improving.<br><SMALL>--<br>Electronic Box Inc, Certified Geek.<br><br>First they ignore you, then they laugh at you, then they fight you, then you win - Gandhi</SMALL>]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,18431584</guid>
<pubDate>Fri, 01 Jun 2007 12:10:22 EDT</pubDate>
</item>

<item>
<title>Re: CRC/HEC errors and packet loss?</title>
<link>http://www.dslreports.com/forum/remark,18431553</link>
<description><![CDATA[<A HREF="/useremail/u/181043"><b>TilhasBB</b></A> : What modem are you using?<br><br>Can you try with no phones connected, modem in different locations or at demarc (where phone comes into bell) what are the stats there?]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,18431553</guid>
<pubDate>Fri, 01 Jun 2007 12:03:29 EDT</pubDate>
</item>

<item>
<title>CRC/HEC errors and packet loss?</title>
<link>http://www.dslreports.com/forum/remark,18431058</link>
<description><![CDATA[<A HREF="/useremail/u/761126"><b>piotrick</b></A> : Hi Everyone,<br><br>I just wanted to know if either CRC or HEC errors can cause packet loss on a DSL line.  <br><br>I am receiving several CRC and HEC errors on my line (a couple hundred thousand after a 7 day period) and a couple thousand of "local errored seconds".  These are only appearing on my downstream.<br><br>I'm on the 5mbit profile.  My downtstream attenuation is 43, and my downstream noise margin fluctuates between 10.0 and 12.0 throughout the day.<br><br>My connection is very stable, however I get some packet loss when I play Counter-Strike 1.6 (yes, I know it's old lol)]]></description>
<guid isPermaLink="true">http://www.dslreports.com/forum/remark,18431058</guid>
<pubDate>Fri, 01 Jun 2007 10:39:27 EDT</pubDate>
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