[VoiceOps] VoIP Testing

[Lee Riemer]

You’ll need to be aware of what level of traffic you’re trying to mirror into the Pi.  The onboard NIC is riding the USB bus which you’ll then share with the external USB NIC.  If the Pi is receiving too much data, it’ll drop packets.  This would appear as an RTP problem even if there isn’t one since RTP packets would be lost.  Also consider the packets per second that the Pi CPU can interrupt for.  20ms = 50pps

From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Shripal Daphtary
Sent: Wednesday, May 24, 2017 9:43 AM
To: Christopher Aloi; Mark Wiater
Cc: voiceops at voiceops.org
Subject: Re: [VoiceOps] VoIP Testing

Thanks! Going to check it out!
On Wed, May 24, 2017 at 10:42 AM Christopher Aloi <ctaloi at gmail.com<mailto:ctaloi at gmail.com>> wrote:
You can use a USB to ethernet dongle on a raspberry pi to bring up two NICs.  I have a VoIP monitor capture node in our lab built this way and it works well.



On Tue, May 23, 2017 at 5:21 PM Shripal Daphtary <shripald at gmail.com<mailto:shripald at gmail.com>> wrote:
Mark, what type of device are you using as the sensor?

I've been looking for a raspberry pi with two Ethernet interfaces but I can't seem to find one.

I'm assuming we need on port for port mirror traffic and one for internet access to send the data back to voipmonitor.



Thanks,

Shripal

> On May 23, 2017, at 3:49 PM, Mark Wiater <mark.wiater at greybeam.com<mailto:mark.wiater at greybeam.com>> wrote:
>
>
>> From time to time we have some remote clients who are facing voice quality issues on their endpoints and I have no real good way of troubleshooting or pin pointing the problem.
> While it's not completely free, I couldn't live without voipmonitor for this very use. I install a sensor in the client network on a mirror port or on the phone system and get to see exactly what they see, from a voip perspective.
>
> The collection software is open source but the gui is invaluable.
>
>
>
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