Experiment 1: First look at the RTP clock (Time) differences

Time difference in RTP clock values

Conclusion: 160 audio samples per frame, with a frame time of 0.20 ms
⇒ 8 K sample/second sampling rate – consistent with ITU-T G.711 PCMA encoding

Transcript

So, if I take a first look at this data. And in this case, I plot the time in RTP clock units versus the relative frame number, and I see it's absolutely flat at 160 audio samples per frame.  And if I look at my data that is consistent with the fact that I'm sending 20 milliseconds worth of sample data at 8 kiloseconds per-sample, [SORRY] 8K samples per second.  That leads to 160 samples being in each one of these packets that I'm sending.  And that's exactly consistent with the ITU-T G.711 pulse code modulation with A-law coding CODEC that I'm using.