Domain: empirix.com
Stories and comments across the archive that link to empirix.com.
Comments · 7
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Cheap options and Expensive optionsCheap option: Linux box hooked up to an ethernet tap at interconnects with the telco's lines. Run ethereal's tethereal in ring buffer mode (making sure that individual files are under 2GB). You are only limited by hard drive space in how much you can store. When viewing the dumps, use etheral > 0.10.10 and go to Statistics->Voip Calls. It will allow you to choose specific calls and even graph things such as latency, jitter, etc. Since you will be dealing with lots of very large files, I recommend using tcpslice (which usually ships in distros with tcpdump) to grab specific chunks that you would like to look at.
Expensive option:Empirx Hammer XMS. It does all of the above with a nice web interface plus it gives you RTP quality metrics like r-factor and MOS. It's not cheap, but I've used and it does a good job (it is basically a SuSE Linux box with some networking gear running their network monitoring software).
All of the above I have tested only with SIP/RTP traffic. If you youse MGCP or H.323, I can't personally vouch for either of the above solutions, though both support them.
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Please learn how to make links.Your blatant plug would be even blatanter if you would learn how to make links.
<a href="http://www.empirix.com">Empirix</a>
(without the trailing ";" put there by Slashdot) yields: Empirix -
Re:Stress testing
You wouldn't need to buy 10 times as much hardware, there are very good Companies out there that does combined Web and Voice testing of your new Voice Response Systems combined with your internal Web application servers.
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A nice alternative to Mercury Interactive..
...is Empirix. They have a whole portfolio of webtest products available. Nice stuff.
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one (commercial) solution
I used to work for empirix on a product which I think is still called e-Test Suite. One of the components, e-Load, does precisely what you describe, and there are some other nifty tools in there too.
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Why not just do it all in software?
This thing is huge. I was thinking of something around the size of a 5 port hub for $50. If it's as big as a computer why not do it in software a la Linux style? Hell, you could probably get away with writing a couple of shell scripts to generate traffic and some deliberately bungled iptables mods. Put that on a Linux Router Project floppy disk and your done. Oh, wait a minute. I wonder selling a big box with little chips inside is more profitable? Hey! -
Two Things...Two things forgotten in the review:
- A picture should be mandatory, especially after that intro text ("tech editors were already exchanging a flurry of e-mail messages about how cool the device looks")
- Price. Sorry, can't seem to find one. Urgh.
;^)