Are your RTP clients sending RTCP? MOS calculation depends on RTCP. You can look in rtpengine's log, at the end of the call the MOS score is logged together with other stream stats.

In more recent versions of rtpengine you can enable local RTCP generation and this should give you stats even if the clients don't send RTCP.

Cheers

Hi

Using Kamailio 5.4.4 on Debian Buster. I am trying to get feedback of the MOS scores at call end. However the variables are always <null>.

I have the modparams set as follows:

# ----- rtpengine params -----
modparam("rtpengine", "rtpengine_sock", "udp:localhost:2223")
modparam("rtpengine", "rtpengine_disable_tout", -1)
modparam("rtpengine", "rtpengine_tout_ms", 2000)
modparam("rtpengine", "rtpengine_allow_op", 1)
modparam("rtpengine", "mos_min_pv", "$avp(s:mos_min)")
modparam("rtpengine", "mos_max_pv", "$avp(s:mos_max)")
modparam("rtpengine", "mos_average_pv", "$avp(s:mos_avg)")
modparam("rtpengine", "mos_average_packetloss_pv", "$avp(s:mos_avg_packetloss)")
modparam("rtpengine", "mos_average_jitter_pv", "$avp(s:mos_avg_jitter)")
modparam("rtpengine", "mos_average_roundtrip_pv", "$avp(s:mos_avg_roundtrip)")

I am trying to log the values from within the dialog:end event_route:

event_route[dialog:end] {
    rtpengine_delete();
    xlog("L_INFO","mos_avg=$avp(mos_avg), packetloss_avg=$avp(mos_avg_packetloss), jitter_avg=$avp(mos_avg_jitter), latency_avg=$avp(mos_avg_roundtrip), sip_last_reply=$rs   - $ci\n");
    return;
}

Am I missing something? I have tried rtpengine_query and rtpengine_manage in place of the _delete and also tried placing this in the BYE handling section of WITHIN_DIALOG but no joy.

Any assistance much appreciated!

-Barry

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