[VoiceOps] VoIP passive monitoring appliances or software - any recommendations?
admin at marcoteixeira.com
Wed Feb 12 15:54:33 EST 2014
Check this one.
I tested it a couple years ago, on a SPAN port and it showed some usefull
info, with drilldown in calls, etc. And MOS too.
Em 12/02/2014 20:38, "Brian Knight" <ml at knight-networks.com> escreveu:
> $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.
> 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.
> 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.
> 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.
> 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?
> Alerting on bad call quality would be a nice-to-have addition.
> Any recommendation would be appreciated. Thanks in advance.
> -Brian Knight
> VoiceOps mailing list
> VoiceOps at voiceops.org
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