H3C Technologies H3C Intelligent Management Center - Manual (Page 57)

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− Received Noise Level (dB)—Received noise level in units of dB that is reported for audio
streams when available. Average energy level of received audio is classified as noise, mono
signal, or the left channel of stereo signal. To create acceptable call quality, make sure this
metric is less than 35 dB. This metric is not reported for A/V conferencing servers or IP
phones.
− Received Signal Level (dB)—Received signal level in units of dB. This metric is reported for
audio streams when available. Average energy level of received audio is classified as mono
speech or left channel of stereo speech. To create acceptable call quality, this metric must be
less than 30 dB. This metric is not reported for A/V conferencing servers or IP phones.
− Burst Duration (ms)—Average duration in milliseconds for bursty transmissions. A "bursty"
transmission is a transmission where data flows in unpredictable bursts, as opposed to a
steady stream. This metric measures data flow between the client and the server.
− Average Burst Density—Average density of bursty transmissions during the call.
− Average Burst Gap Duration—Average interval between bursty transmissions during the
call.
− Average Burst Gap Density—Average gap density for bursty transmissions during the call.
− Average Degradation Jitter—MOS degradation caused by jitter during the call.
− Maximum Degradation Value—Maximum MOS degradation during the call.
− Minimum Received MOS—Minimum received MOS value during the call.
− Minimum Sent MOS—Minimum sent MOS value during the call.
− Average Sent MOS—Estimated MOS value of sent audio during the call. This value is
determined by the codec used, observed packet loss, and observed network jitter.
− Average Received MOS—Estimated MOS value of received audio during the call. This
value evaluates the audio quality and is determined by the codec used, observed packet
loss, and observed network jitter.
− Minimum Overall MOS—Minimum of MOS-LQO wideband during the call. This value
evaluates the audio quality and is determined by the codec used, observed packet loss, and
observed network jitter.
− Average Overall MOS—Average of MOS-LQO wideband, based on the audio codec used,
the observed packet loss and inter-arrival packet jitter.
− Degradation Caused by Packet Loss—Average fraction of the DegradationAvg that was
caused by packet loss.
{
Quality Information-Video Metrics
This area appears only when the call is an audio and video call.
− Average Video Packet Loss (packets/s)—Average number of video packets lost per second
during the call.
− Average Frames Received (packets/s)—Average number of video frames received per
second during the call.
− Average Video Frame Loss (%)—Average percentage of video frames lost as they are
displayed to the user, including frames recovered from network losses.
− Dynamic Capability (%)—Percentage of time that the client is running under capability of
less than 70% of expected capability for the CPU.
− Low Frame Rate Time—Percentage of time of the call when the frame rate is less than 7.5
frames per second.
− Low Resolution Time—Percentage of time of the call when resolution is low.