<div dir="auto"><div dir="auto"><br>+1 for MTR<div dir="auto"><br></div><div dir="auto">also iperf in both directions. <div dir="auto"><br></div><div dir="auto">And if the only tool you have is ping. Change ping frequency and packet size to match G711. Ping each individual hop along the way, that you can, and look for discrepancies.</div><div dir="auto"><br></div><div dir="auto">Keep in mind it's ICMP so it will get deprioritized, but if it works fine sometimes and other times it does not, it's a load or fault-at-load that causes it to go karplunk.<br></div><div dir="auto"><br></div><div dir="auto">My favourite real life experience troubleshooting network weirdness was with a fortune 1000 client's network team early in the VoIP era. Same type of time-of-day weirdness.</div><div dir="auto"><br></div><div dir="auto">They were swearing up and down that their network gear was clean and was not running high on memory or cpu use... Until we painstakingly determined that it must be the network gear.... At which point they found their queue limits were too low for VoIP. The reason their network gear was clean was because it was ignoring packets when it got busy. That was a decade+ ago, I am sure the current network requirements have evolved (video and all)... But still... </div><div dir="auto"><br></div><div dir="auto"><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Nov 15, 2023, 9:19 a.m. Richard Jobson via VoiceOps <<a href="mailto:voiceops@voiceops.org" target="_blank" rel="noreferrer">voiceops@voiceops.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto">You either need to monitor the segment of the network surrounding the packet loss to isolate it<div><br></div><div>2. or you could use an active tool such as our VPP to make PESQ measurement to call from endPoint into your net work, and proven end to end exactly where & where the problem is happening.<br><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Oct 30, 2023, at 12:44 PM, Pinchas Neiman via VoiceOps <<a href="mailto:voiceops@voiceops.org" rel="noreferrer noreferrer" target="_blank">voiceops@voiceops.org</a>> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">Not too experienced, but my 2 cents<div><br></div><div>If it's based on a faulty router.<br><div>do a traceroute in the morning and in the afternoon a few days maybe you will find a correlation to a specific route.<br></div><div><br></div><div>In morning hours try to ping every hop from the traceroute with BIG packets so you could find how far you can get without packet loss.</div><div><br></div><div>the latter will also help If it is based on congestion</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Oct 30, 2023 at 2:07 PM Izzy Goldstein - TeleGo via VoiceOps <<a href="mailto:voiceops@voiceops.org" rel="noreferrer noreferrer" target="_blank">voiceops@voiceops.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">HI team</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">we recently noticed packet loss happening every morning from 6AM to 11AM, our MOS drops during that time<br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">our datacenter in garden City Long island (formerly Webair / now Opti9) claims it is outside of their network and can't do anything - but they have been unable to identify where the loss is occurring </div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">so i have 2 questions</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">1) </div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">Is there anyone in this group using the same datacenter, and if so, do you have any RTP issues ? </div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">maybe the issue is with one of our SIP providers, etc and not the Datacenter directly</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">2)</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">What's a good tool / method to determine where the packet loss is happening ?</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)">i am using VoipMonitor - but willing to start using other tools to find the root cause</div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"><br></div><div class="gmail_default" style="font-family:arial,sans-serif;font-size:small;color:rgb(0,0,0)"> <br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><span style="font-size:12.8px"><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-size:13.3333px;font-family:arial;color:rgb(67,67,67);background-color:transparent;font-weight:700;vertical-align:baseline;white-space:pre-wrap">Izzy Goldstein </span></p><p dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt"><span style="font-size:13.3333px;font-family:arial;color:rgb(67,67,67);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">Chief Technology Officer</span><span style="font-size:13.3333px;font-family:arial;color:rgb(67,67,67);background-color:transparent;font-style:italic;vertical-align:baseline;white-space:pre-wrap"> - 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</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div><b>Pinchas S. Neiman</b></div><div>Software Engineer At ESEQ Technology Corp.</div><div>845.213.1229 #2</div><img width="200" height="68" src="https://ci3.googleusercontent.com/mail-sig/AIorK4z1Lx063u893FlkIV1C3aJbVPjgKnaA2Xu8q_iPdyFOnK_JX05usgghpAIwmPqB-1t-3fdaShNHoCPf7fFwa1twYZt-xjsBZheqmsCQrg"><br></div></div></div></div></div></div></div></div></div></div></div></div></div></div>
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</blockquote></div><div data-smartmail="gmail_signature">Ivan Kovacevic<br>Chief Revenue Officer and Co-CEO<br><br>STAR TELECOM - Cloud Communications and Customer Experience Solutions <br><br>Toronto - Canada | Fort Lauderdale - USA | Belgrade - Serbia<br>O: +1 855-782-7835 x723 | M (CAN) +1-647-771-4773 | M (USA) +1-954-305-5665 | <a href="mailto:ivan.kovacevic@startelecom.ca">ivan.kovacevic@startelecom.ca</a> <br><a href="http://www.startelecom.ca">www.startelecom.ca</a><br> </div></div>
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