In testing voice audio of phone calls, I had previously used some bash scripting. As the test was making automated phone calls via SIP/VOIP, I would record a pcap off the interface traffic. The script would then read the pcap and parse out the audio (RTP) to a file, which Continue Reading
The goal here was to test WebRTC and Flash’s RTMFP technology, getting an indicator for audio quality on each run. The test suite would have to incorporate latency into the tests, where the latency can be set up before the test is run, and torn down when the test is Continue Reading
The question came up today, about tshark… specifically if tshark/wireshark is smart enough to know which SIPP call is being captured in the media. By default, no. However, you can get around this to run simultaneous jobs if you design your architecture to make use of Virtual Machines. In my Continue Reading
I had a need for an internal tool where I work. The premise is that our company buys and stores various numbers that they lease out later. However, if those numbers do not have activity in a certain amount of time, they can become deactivated. In the past, the company Continue Reading
For many people this project is going to be Easy. It’s very simple. The idea for this came from a situation at work. I am a sole user of a command line SIP/VOIP tool called SIPP. The tool is incredibly complex. It took me many weeks to get it up Continue Reading
I’ve created a Presentation that goes over these points as well:http://prezi.com/-29ebxieb4ek/copy-of-rtp-re-assembly/ *UPDATE*I found this awesome work, using google’s translate api, to transcode the audio to text:http://cheateinstein.com/category-shell/using-google-voice-api-to-transcribe-audio/I’ve now used this at the final end of the process, to verify the text heard is what is expected!! I’ve been working on this Continue Reading
After following a lot of different tutorials (some of which worked some of which didn’t), I came up with a shell script using a couple tools to scrape a packet capture file, pull out the rtp packets, and then convert them back into audio. For me this will be useful in Continue Reading
NOTE: This is a very old article. It makes use of simple scripts and Jenkins. I later built out many better solutions utilizing programming methodologies. However, this is still a great article for referencing as a start point. Jenkins in this case was used to kick off various jobs/scripts. I’ve Continue Reading
After reskinning Jenkins, adding in some more functionality, and graphing capabilities, the SIP testing tool looks like this:
This is a walk through on what it took to get a single SIP load test generated, using SIPP. Getting the first one was hard, so I wanted to document these steps in case it helps anyone else, and for future reference. Tools There’s not a lot of SIP load Continue Reading
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