Hi,
I have taken some wireshark results of VOIP calls between two computers.
The strange thing I notice is that the delta value seems to alternate between around 30ms and then every 2 or 3 packets goes to near 0ms. I am using the GSM 06.10 codec so I guess they are sending packets out every 30ms so I am expecting the delta value to fluctuate around the 30ms mark so was wondering what was causing it to go down to near 0ms every other packet or so?
This is giving strange results when calculating the mean delta manually in excel. Maybe I should neglect those very small values when calculating the mean delta?
Please see a section of my results below so you can see what I mean.
Thanks,
Packet/seq no., Delta, Jitter, Bandwidth
4932 32561 31.73 14.53 29.2
4933 32562 0.37 14.85 29.78
4936 32563 31.73 14.66 29.78
4937 32564 0.37 14.97 30.37
4939 32565 31.73 14.76 29.78
4942 32566 31.98 14.59 29.2
4943 32567 0.37 14.91 29.78
4946 32568 31.73 14.71 29.78
4948 32569 32.11 14.54 29.2
4949 32570 0.25 14.87 29.78
4952 32571 31.74 14.67 29.78
4953 32572 0.25 14.99 30.37
4955 32573 31.73 14.79 29.78
4958 32574 32.1 14.62 29.2
4959 32575 0.37 14.93 29.78
4962 32576 31.61 14.73 29.78
4964 32577 32.11 14.56 29.2
4965 32578 0.37 14.88 29.78
4968 32579 31.61 14.67 29.78
4969 32580 0.37 14.98 30.37
4971 32581 31.61 14.77 29.78
4974 32582 32.23 14.61 29.2
4975 32583 0.37 14.93 29.78
4978 32584 31.61 14.72 29.78
4980 32585 32.1 14.56 29.2
4981 32586 0.25 14.88 29.78
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