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<p class="MsoNormal"><span style="color:#1F497D">Yep, seen this one before and I believe I posted about it here previously.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Telstra are only allowing EF towards their SIP servers, thus avoiding to have to pay for the UNI-D ports and COS1 NBN traffic.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Then they’re selling a Netgear Router with a VoIP ATA Built in and essentially forcing customers to use Telstra for calls rather than another VoIP provider.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We got around this by using a non-Telstra router and re-writing the packets as they hit the router (from EF to BE) so that it would flow.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Greg<o:p></o:p></span></p>
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<p class="ImprintUniqueID"><font style="font-family:Calibri;font-size:10pt;color:Black;font-weight:bold;">Greg</font><font color="black" size="2" face="Calibri"> </font><font style="font-family:Calibri;font-size:10pt;color:Black;">Lipschitz</font><font color="black" size="2" face="Calibri"> |
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</font><font style="font-family:Calibri;font-size:10pt;color:Black;">The Summit Group</font></p>
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<p class="ImprintUniqueID"><font size="2" face="Calibri">E: </font><span style="font-family:Calibri;font-size:10pt;"><a href="mailto:Greg@thesummitgroup.com.au" title="Click to send email to Greg Lipschitz" target="" style="font-family:Calibri;font-size:10pt;"><span style="font-family:Calibri; font-size:10pt;">Greg@thesummitgroup.com.au</span></a></span><font size="2" face="Calibri"> | W:
<a href="http://www.thesummitgroup.com.au" title="" target="" style="">www.thesummitgroup.com.au</a></font></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-AU">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-AU"> AusNOG [mailto:ausnog-bounces@lists.ausnog.net]
<b>On Behalf Of </b>Dino Sosic<br>
<b>Sent:</b> Friday, 7 August 2015 2:02 PM<br>
<b>To:</b> ausnog@lists.ausnog.net<br>
<b>Subject:</b> [AusNOG] Telstra NBN - DSCP Filtering<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi guys,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Something I discovered after an extensive tshooting. Telstra service on NBN ( TID Service ) actually drops all non 0 marked DSCP markings. They say it’s actually NBN doing that, but I do not see this on other providers. I had phones trying
to register across the IPsec through that NBN, that were failing to do so as long as they were sending marked packets (phones mark it EF by default ). Once I remarked the voice traffic to DSCP 0(default), the SIP registered immediately. Some heavy traffic
manipulation or what? <span style="font-family:Wingdings">J</span> So much for unhindered transport from A to B.
<o:p></o:p></p>
<p class="MsoNormal">Interesting part was also, even though the voice traffic is inside the ESP packet, those packets get dropped, I am guessing due to size+DSCP marking copied to ESP packet. Anyone seen this before?<o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D;mso-fareast-language:EN-AU"><o:p> </o:p></span></p>
<p class="MsoNormal">Dino<o:p></o:p></p>
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