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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Initially we got reports from our outlying
offices using SIP that the calls were dropping. Initial traces showed that the
calls never dropped.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Then we have several offices around the
country and all joined on a conf bridge also using IM sessions. At random
intervals the call stayed up but we could not hear each other. We use a
Audiocodes mediant and started to see RTP offers changing in the middle of our
side of the calls. The IP was our IP to the Dash Atlanta SBC.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We called dash and they said that the
Denver SBC was having issues and they were rerouting a lot of calls to the
Atlanta SBC. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>We got a email from Dash shortly after
that saying the Firewall in front of the SBC was having problems and I guess
they bounced it…<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Anyway the RTP issues cleaned up..Gotta love
SIP<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><b><font size=2 color="#5bc8e6" face=Arial><span
style='font-size:11.0pt;font-family:Arial;color:#5BC8E6;font-weight:bold'>V/r</span></font></b><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
style='font-size:12.0pt;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=2 color="#5bc8e6" face=Arial><span
style='font-size:11.0pt;font-family:Arial;color:#5BC8E6;font-weight:bold'>Chris
Ledford<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color="#5bc8e6" face=Arial><span
style='font-size:8.0pt;font-family:Arial;color:#5BC8E6'>CCNA VOICE/CCSP</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color="#5bc8e6" face=Arial><span
style='font-size:8.0pt;font-family:Arial;color:#5BC8E6'>Comptia
A+/Net+/Linux+/Sec+</span></font><font size=2 color="#5bc8e6" face=Arial><span
style='font-size:11.0pt;font-family:Arial;color:#5BC8E6'><br>
</span></font><b><i><font size=2 color="#f1ab00" face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:#F1AB00;font-weight:bold;
font-style:italic'>T3 Engineer</span></font></i></b><font size=2 color="#f1ab00"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#F1AB00'><br>
<a href="http://navy.togetherweserved.com/profile/13552"><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>http://navy.togetherweserved.com/profile/13552</span></font></a></span></font><font
color=black><span style='color:black'> </span></font><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Alex Balashov
[mailto:abalashov@evaristesys.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, January 12, 2011
11:06 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Chris Ledford<br>
<b><span style='font-weight:bold'>Cc:</span></b> voiceops@voiceops.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [VoiceOps] RTP issues
to Dash Atlanta SBC</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Just to clarify, how do you know it's RTP drops that are the problem?
Do you have some means of intercepting the RTP streams at Dash's Atlanta
POP and checking the integrity of yours? Or are you getting this from
RTCP reports from their side?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If you are looking at the RTP as it leaves your own network and seeing
drops, you already know your problem and it has nothing to do with Dash.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>If none of the above, how do you know RTP is the problem, and not some
other issue (on their side or yours) that can cause quality anomalies, which I
presume to be the symptom leading to your diagnosis?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>--<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Alex Balashov - Principal<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Evariste Systems LLC<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>260 Peachtree Street NW</span></font></st1:address></st1:Street><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Suite</span></font></st1:Street>
2200</st1:address><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>Atlanta</span></font></st1:City>,
<st1:State w:st="on">GA</st1:State> <st1:PostalCode w:st="on">30303</st1:PostalCode></st1:place><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Tel: +1-678-954-0670<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Fax: +1-404-961-1892<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Web: <a href="http://www.evaristesys.com/"></a><a
href="http://www.evaristesys.com/">http://www.evaristesys.com/</a><o:p></o:p></span></font></p>
</div>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
On Jan 12, 2011, at 11:45 PM, Chris Ledford <<a
href="mailto:chris.ledford@cnxntech.com">chris.ledford@cnxntech.com</a>>
wrote:<o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>Sorry all I
meant to say RTP drops to the Atlanta SBC. I had a runaway tcpdump running when
I wrote it </span></font><font size=2 face=Wingdings><span style='font-size:
10.0pt;font-family:Wingdings'>J</span></font><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'> . My Bad.<u1:p></u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><u1:p> </u1:p></span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><font
size=2 color="#5bc8e6" face=Arial><span style='font-size:11.0pt;font-family:
Arial;color:#5BC8E6;font-weight:bold'>V/r</span></font></b><u1:p></u1:p><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <u1:p></u1:p><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><font
size=2 color="#5bc8e6" face=Arial><span style='font-size:11.0pt;font-family:
Arial;color:#5BC8E6;font-weight:bold'>Chris Ledford<u1:p></u1:p></span></font></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=1 color="#5bc8e6" face=Arial><span style='font-size:8.0pt;font-family:
Arial;color:#5BC8E6'>CCNA VOICE/CCSP</span></font><u1:p></u1:p><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=1 color="#5bc8e6" face=Arial><span style='font-size:8.0pt;font-family:
Arial;color:#5BC8E6'>Comptia A+/Net+/Linux+/Sec+</span></font><u1:p></u1:p><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 color="#5bc8e6" face=Arial><span style='font-size:11.0pt;font-family:
Arial;color:#5BC8E6'>EWC/CTTC(sw) USN<br>
</span></font><b><i><font size=2 color="#f1ab00" face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:#F1AB00;font-weight:bold;
font-style:italic'>T3 Engineer</span></font></i></b><font size=2 color="#f1ab00"
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:#F1AB00'><br>
<br>
<br>
<br>
</span></font><o:p></o:p></p>
<u1:p></u1:p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'><u1:p> </u1:p><o:p></o:p></span></font></p>
</div>
</div>
</blockquote>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>_______________________________________________<br>
VoiceOps mailing list<br>
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<a href="https://puck.nether.net/mailman/listinfo/voiceops">https://puck.nether.net/mailman/listinfo/voiceops</a><o:p></o:p></span></font></p>
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</blockquote>
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