This document is to serve as guidelines only for best practice results.
Packet Loss is the event where one or more packets are not received by the intended recipient as expected due to congested network or failure in transmission.
The following should be measured and presented for packet-loss:
|GREEN||Packets lost per second||No Loss - < 1%|
|YELLOW||Packets lost per second||> 1%|
|RED||Packets lost per second||> 5%|
Latency is the measure of delay on the network, usually measured in milliseconds and for round trip time.
|IDEAL||Less than 100ms|
|NO GOOD||More than (>) 450ms|
NOTE: VidyoProxy will not support latency greater than (>) 200ms>
Jitter is a measure of the variability over time of packet latency across a network. A network with constant latency has no variation (or jitter). Packet jitter is expressed as an average of the deviation from the network mean latency.
hen jitter occurs during video/audio communication the effect is lost audio, halted audio, unnatural audio.
It is highly desirable to eliminate or minimize such events during live video/audio communications.
Monitoring the jitter provides an indication of the quality of the network.
|IDEAL||No Jitter, latency is relatively consistent, less than (<) 10ms|
|WORKABLE||Jitter less than 100ms|
|NO GOOD||Jitter more than (>) 200ms|
Available bandwidth is the amount of bandwidth available to the client. The client statistics show the maximum available that the client may use, not the full amount available to the client host system.
For Vidyo, the uplink bandwidth is more straight-forward. For downlink, it is very subjective, and depends on what is being viewed (the number of participants, window size, etc).
|Best for HD Tx||1-1.2 MB Up/Send|
|Best for SD Tx||600-800 KB Up/Send|
|OK Tx||400-600 KB Up/Send|
|MED Tx||250-400 KB Up/Send|
|LOW Tx||150-250 KB Up/Send|
|NO GOOD Tx||Less than 150 KB Up/Send – Audio Only|
NOTE: Add 200KB when data sharing
|IDEAL HD Rx||4 MB Down/Receive|
|IDEAL SD Rx||2-2.4 MB Down/Receive|
|OK Rx||400 KB -2 MB Down/Receive|
|MED Rx||250-400 KB Down/Receive|
|LOW Rx||150-250 KB Down/Receive|
|NO GOOD Rx||Less than 150 KB Down/Receive – Audio Only|