The media statistics command allows you to estimate the values of the packet loss, jitter, and the Round Trip Time (RTT) statistics based on RFC-3550.
voice service voip media statistics
show call active voice show call active voice | i LostPackets show call active voice | i RoundTripDelay show call active voice | i PlayDelayJitter show voip rtp connections show call history voice last 2 | i RoundTripDelay show call history voice last 2 | i LostPackets
Router# debug voip rtcp sub-rtcp VOIP RTCP Subrtcp debugging is on Oct 16 19:35:26.870: SUBRTCP:tx SR (15.5.34.5-17893)->(15.5.34.158,17795) rtcp-intv(5002 ms) Oct 16 19:35:26.870: SUBRTCP Sender Report dump Length - 32: 80 FA 00 07 0F 25 22 05 80 C8 00 05 C8 DE 5D 7E DE C6 2A 6D 00 00 00 00 00 00 00 00 00 00 00 00 Oct 16 19:35:26.878: SUBRTCP:tx SR (15.5.34.5-16991)->(15.5.34.6,18745) rtcp-intv(5005 ms) Oct 16 19:35:26.878: SUBRTCP Sender Report dump Length - 32: 80 FA 00 07 05 CD 22 05 80 C8 00 05 C8 DE 5D 7E E0 D2 59 C1 00 00 00 00 00 00 00 00 00 00 00 00
Router# debug voip rtp statistics VOIP RTP Statistics debugging is on Oct 16 19:38:20.000: RTP[15.5.34.6-0x1B5B2298]: loss(0) jitter(5 ms, 5992 us) Oct 16 19:38:22.556: RTP[15.5.34.6-0x1B5B2298]: loss(0) jitter(8 ms, 8054 us)