<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Hello Brian,<div><br></div><div>of course I would recommend our own solution for passive monitoring. </div><div>Have a look at <a href="http://www.voipfuture.com">www.voipfuture.com</a>, or get in touch with <a href="mailto:eyal.ullert@voipfuture.com">eyal.ullert@voipfuture.com</a> .</div><div><br></div><div>Some highlights:</div><div><br></div><div><ul class="MailOutline"><li>High performance probes scaling for up to 10Gbit/s tapped network links, based on standard HP servers</li><li>More than 120k concurrent media streams per second analyzed</li><li>Fixed 5-second time-slices reporting media quality for every media stream</li><li>Correlation of media streams with SIP signaling</li><li>Statistics that can be used for SLA agreements with enterprises </li><li>Over 400 KPI values and metrics that can be used for quality based routing or fast troubleshooting </li><li>Web based user interface to access measurement data from any browser. No client Java dependencies.</li><li>Economic database cluster based on PostgreSQL scaling to a multi tera-byte data warehouse if needed, while saving customers reoccurring license fees</li><li>Interfaces to integrate quality metrics to CDR/billing applications, customer care centers, etc...</li></ul></div><div><br></div><div>Let me know if you have further questions.</div><div><br></div><div>Regards,</div><div>Michael</div><div><br><div><div>Am 12.02.2014 um 21:15 schrieb Brian Knight <<a href="mailto:ml@knight-networks.com">ml@knight-networks.com</a>>:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div>$DAY_JOB is at a national ISP/NSP where we resell VoIP services. We do peering with the VoIP carrier at one of our remote POP's. We are looking for a better way to be able to monitor the handoff of those calls to our carrier over that peering link.</div>
<div><br></div><div>We have quite a bit of instrumentation within our walled garden to tell us about call quality. We can monitor our QOS policies to ensure packets aren't being dropped by intermediate routers. If the customer uses our routers to terminate their SIP session, we can pull call quality stats from those routers as well. We can also use our own office telephones to make and receive test telephone calls, and we can of course run Wireshark captures from the switches to which those phones are connected.<br>
</div><div><br></div><div>However, we can't say for certain that the customer's RTP traffic actually made it on the wire connecting us to the VoIP provider, nor can we say that the traffic is being transmitted and received properly. The peering link is connected to a Cisco 12k router on our side, so there is no way (afaik) to mirror the port, as on a switch.</div>
<div><br></div><div>For the moment, I am envisioning that we'll need to deploy a server running Wireshark to the remote POP. It will need two network interfaces; one connected to a management network, the other a capture interface. The capture interface will connect to a network tap, and the network tap connected in-line between our router and the patch panel.</div>
<div><br></div><div>Wireshark is probably adequate for what we need. But I'm wondering if there is any software or an appliance that would do the job better. Given the usual details - calling number, called number, date and time - we want to be able to quickly inspect traffic and dig into the details of the stream. Do we see any missing packets from the media stream? What is the MOS score of a particular call? Do we see any missing packets coming from us? Any missing packets from the provider?</div>
<div><br></div><div>Alerting on bad call quality would be a nice-to-have addition.</div><div><br></div><div>Any recommendation would be appreciated. Thanks in advance.</div><div><br></div><div>-Brian Knight</div></div>
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font-size: 11px; "><colgroup><col width="160"><col width="10"><col width="250"></colgroup><tbody><tr><td colspan="3"><br>Kind regards / Mit freundlichen Grüßen</td></tr><tr><td colspan="3"><span style="font-weight: bold; font-size: 15px; ">Michael Krüger</span><br>Head of Development</td></tr><tr height="20"><td colspan="3"><hr><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; border-spacing: 0px; "><span class="Apple-style-span" style="font-family: Arial, sans-serif; font-size: 11px; border-spacing: 2px; "><br class="Apple-interchange-newline"><table border="0" class="" style="font-size: 11px; "><tbody class=""><tr class=""><td colspan="3" align="left" class=""><b class="">VOIPFUTURE GmbH</b> Wendenstraße 4 20097 Hamburg Germany</td></tr><tr class=""><td colspan="3" align="left" class=""><b class="">Phone</b> +49 40 688 900 168 <b class="">Mobile</b> +49 151 11763660 <b class="">Fax</b> +49 40 688 900 199</td></tr><tr class=""><td colspan="3" align="left" class=""><b class="">Email</b> <a href="mailto:michael.krueger@voipfuture.com">michael.krueger@voipfuture.com</a> <b class="">Web</b> <a href="http://www.voipfuture.com">http://www.voipfuture.com</a></td></tr><tr height="10" class=""><td colspan="3" class=""> </td></tr><tr class=""><td align="left" colspan="3" class=""><b class="">CEO </b>Jan Bastian<br></td></tr><tr class=""><td align="left" colspan="3" class=""><b>Commercial Court </b>AG Hamburg HRB 109896<br><b>VAT ID</b> <span class="Apple-style-span" style="border-spacing: 0px; 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