On Fri, Apr 3, 2009 at 10:12 AM, Sebastian Mellmann < sebastian.mellmann at net.t-labs.tu-berlin.de> wrote: > Hi everyone! > > After each call 'pjusa' prints some information about the past call. > > An example summary looks like this: > > [DISCONNCTD] To: sip:30.30.30.1;tag=04YY1YX4-0S0HH2yi7LWNBSZ8mXDD9jy > Call time: 00h:01m:01s, 1st res in 71 ms, conn in 71ms > SRTP status: Not active Crypto-suite: (null) > #0 PCMU @8KHz, sendrecv, peer=30.30.30.1:4000 > RX pt=0, stat last update: 00h:00m:01.243s ago > total 2.7Kpkt 444.3KB (555.4KB +IP hdr) @avg=58.1Kbps/72.7Kbps > pkt loss=276 (9.0%), discrd=1 (0.0%), dup=0 (0.0%), reord=0 (0.0%) > (msec) min avg max last dev > loss period: 20.000 22.258 60.000 20.000 6.820 > jitter : 0.000 0.337 1.750 0.750 0.278 > TX pt=0, ptime=20ms, stat last update: 00h:00m:01.555s ago > total 3.0Kpkt 488.8KB (611.0KB +IP hdr) @avg 64.0Kbps/80.0Kbps > pkt loss=308 (9.2%), dup=0 (0.0%), reorder=0 (0.0%) > (msec) min avg max last dev > loss period: 340.000 513.333 720.000 480.000 56.446 > jitter : 0.125 0.208 0.250 0.125 0.058 > RTT msec : 0.762 1.252 2.817 2.817 0.705 > > I'm not sure what the 'loss period' and 'jitter' values mean. > How can I interpret those values? > I know what 'jitter' means, but not in this case. > > Loss period means the period on which we didn't have audio, due to packet loss. There are some definitions/explanations in RFC 3357, not sure if this helps or not. But the main use in our case is to have some understanding about the nature of the packet losses, i.e. if we have total of 10 packet losts, the loss period helps us to know whether these losses are random/one by one (in this case the loss period would be 1 frame/20ms) or in a burst (in this case the loss period would be more than 1 frame). I'm not sure which part of jitter that's not clear. cheers Benny > Thanks in advance for help! > > > Regards, > Sebastian > > _______________________________________________ > Visit our blog: http://blog.pjsip.org > > pjsip mailing list > pjsip at lists.pjsip.org > http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20090403/79a91cda/attachment.html>
