H3C Technologies H3C Intelligent Management Center - Manual (Page 56)

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− Start Time—Time when the call started, in the format of YYYY-MM-DD hh:mm:ss.
− End Time—Time when the call ended, in the format of YYYY-MM-DD hh:mm:ss.
{
Quality Information-Basic Metrics
− Estimated Maximum Bandwidth (kB/s)—Maximum estimated bandwidth in Mbps
measured during the call.
− Estimated Minimum Bandwidth (kB/s)—Minimum estimated bandwidth in Mbps measured
during the call.
− Codec—Name of the codec for the call.
− Transport Protocol—Transport protocol of the call.
− Conversational MOS—Conversational clarity index for remote party.
− Number of RTP Packets—Number of Real-time Transport Protocol (RTP) packets sent in the
session.
− Average Packet Loss Rate (%)—Average fraction lost, computed over the duration of the
session.
− Maximum Packet Loss Rate (%)—Maximum packet loss rate measured during the call.
− Average Network Jitter (ms)—Average inter-arrival jitter in milliseconds measured by the
RTCP during the call.
− Maximum Network Jitter (ms)—Maximum inter-arrival jitter in milliseconds measured by
the RTCP during the call.
− Round-Trip Time (ms)—Average network propagation round-trip time measured by the
RTCP during the call.
− Maximum Round-Trip Time (ms)—Maximum network propagation round-trip time in
milliseconds measured by the RTCP during the call.
− Packet Drop Ratio of the Healer (%)—Ratio of audio packets dropped by a healer over total
number of audio packets received by the healer.
{
Quality Information-Audio Metrics
− Average MOS Degradation Value—Difference between the OverallAvg value and the
maximum possible MOS-LQO for the audio codec used in the session. This value is in the
range of 0.0 to 5.0. To create acceptable audio quality, make sure this value is less than
0.5.
− Healer Concealed Ratio (%)—Ratio of the number of audio frames with samples generated
by packet loss concealment to the total number of audio frames. This metric is reported for
audio streams when available.
− Echo Microphone In (%)—Percentage of time when echo is detected in the audio from the
capture or microphone device prior to echo cancellation. If a handset is used, this value
should be small.
− Echo Send (%)—Percentage of time when echo is detected in the audio from the capture or
microphone device after echo cancellation.
− Echo Returns—Echo returns reported for audio streams, when available. The smaller the
value, the smaller the echo. This metric is not reported for A/V conferencing servers or IP
phones.
− Echo Event Causes—Reasons of device echo detection and reported for audio streams,
when available.