Finisar Surveyor, Руководство пользователя

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11-15
Multi-QoS
Call Range Graphs and Summaries
11
Field Descriptions for Call Range Summaries
The following tables provide brief descriptions of all table columns for call range
summaries. Only the metric of interest will be displayed in the table. For example,
if you are looking at calls in a specific range for Call Jitter, RTCP Jitter and other
metrics will not be displayed.
Table 11-4. Call Range Summary Field Descriptions
Table Column Description
Protocol H.323, SCCP, SIP, or Unknown. A protocol type of Unknown means that Sur-
veyor recognizes packets that belong to a call, but because of incomplete or
non-standard information in the packets, Surveyor cannot determine the pro-
tocol type.
Frame ID Frame ID of the first frame from which the conversation was detected. This
field is useful when doing post-capture analysis. If there is a need for in-depth
analysis of a specific call the first frame associated with a call can be quickly
determined.
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 determine the User R-factor.
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 Network R-factor.
Jitter * Maximum jitter, measured in milliseconds, for all channels within a call. The
value is calculated by Surveyor. Surveyor uses the formula described in RFC
1889 to calculate jitter.
Dropped
Packets Maximum number of dropped packets for all channels within a single call. The
value is calculated by Surveyor.
RTCP Jitter Maximum jitter, measured in milliseconds, for all channels within a call. This is
the jitter value reported in RTCP packets.
RTCP Dropped
Packets Maximum number of dropped packets for all channels within a single call. This
is the number of dropped packets reported in RTCP packets.
Status Status of the call. The Status is either “Active” or “Complete”.
Source Address The IP source address of the initiator of the call.
Dest Address The IP destination address of the receiver of the call.
Start Time Time at which the call was started.
Stop Time Time at which the call was completed.
Call Setup TIme Time that was taken for the call to be setup (the time taken from the start of
the call until the phone rings).
Total Call Time Duration of the call from Start Time to Stop Time.