12. sccp channel table column descriptions -28 – Finisar Surveyor User Manual
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11-28
Surveyor
User’s Guide
Table 11-12. SCCP Channel Table Column Descriptions
Table Column
Description
Channel
Channel type, Audio, Video, or Data.
Min User R Factor
The lowest User R-factor calculated during a sampling interval for a call.
User R Factor
Voice quality measure expressed as a numeric value between 0 and
94. The value is calculated by Surveyor. Surveyor uses a formula that
includes packet loss, jitter, transmission delay, and recency to deter-
mine the User R-factor.
Max User R Factor
The highest User R-factor calculated during a sampling interval for a
call.
Min Network R Factor
The lowest Network R-factor calculated during a sampling interval for a
call.
Network R Factor
Voice quality measure expressed as a numeric value between 0 and
94. The value is calculated by Surveyor. Surveyor uses a formula that
includes packet loss, jitter, and transmission delay to determine the Net-
work R-factor.
Max Network R Factor
The highest Network R-factor calculated during a sampling interval for a
call.
Estimated MOS
A conversion of the combined R-factors to a Mean Opinion Score. The
MOS maps to a purely subjective evaluation of call quality where users
rate speech samples on a scale of 1 to 5.
Src Addr
IP address of the caller
Src Port
UDP port of the caller
Dst Addr
IP address of the callee
Dst Port
UDP port of the callee
Sync Source
Synchronization Source. Internal number identifying the source.
Packet Count
Packet Count. The value is calculated by Surveyor.
Byte Count
Byte Count. The value is calculated by Surveyor.
Dropped Packets
Packets Dropped. The value is calculated by Surveyor.
Codec
Codec/Decoder type. (DataType in H.245)
Jitter (ms)
Jitter in milliseconds. The value is calculated by Surveyor. Surveyor
uses the formula described in RFC 1889 to calculate jitter.
Min Jitter (ms)
Minimum Jitter in milliseconds. The value is calculated by Surveyor.
Surveyor uses the formula described in RFC 1889 to calculate jitter.
Max Jitter (ms)
Maximum Jitter in milliseconds. The value is calculated by Surveyor.
Surveyor uses the formula described in RFC 1889 to calculate jitter.