Viavi OneExpert DSL ONX-580, User Manual

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OneExpert DSL User's Guide
22052280, Rev. 015 April 2019
Chapter 15 Test Results
257
MOS
The following section describes the VoIP Audio Quality MOS (mean opinion score) results.
These results relate to one call.
R-value is a number that indicates the quality of speech, displayed as a percentage
(1=worst and 100=best).
• Conversational MOS – Current conversation quality, between 1 (bad) and 5
(excellent).
• Listener MOS – Current listener quality, between 1 (bad) and 5 (excellent).
• Conversational R Factor – Current conversation quality R factor.
• Listener R Factor – Current listener quality R factor.
• G.107 R Factor – Current G.107 R factor.
• Burst R Factor – Current burst R factor
• Gap R Factor – Current gap R factor
• Maximum Possible – The best possible conversation quality R factor for the
connection.
• Maximum Codec – The best possible quality coming through the codec.
• Packet Loss Degradation – Degradation factor due to Packet Loss.
• Codec Degradation – Degradation factor due to the Codec.
• Delay Degradation – Degradation factor due to Delay.
• Recency Degradation – Degradation factor due to recent events.
• Discard Degradation – Degradation factor due to Discard.
Network results
• Local Throughput Rate – Bit rate transmitted (TX) or received (RX) for the audio
and video portions of the call.
• Local Throughput Bytes – Total number of bytes transmitted (TX) orreceived (RX).
• Local Throughput Packets – Total number of packets transmitted (TX) orreceived
(RX).
• Local Throughput Packets OOS – Total number of packets that arrive out
ofsequence.
• Remote Throughput Bytes – The number of Bytes that the remote entityreports
that it has transmitted (sent via RTCP).
• Remote Throughput Packets – The number of Packets that the remote entity
reports that it has transmitted (sent via RTCP)