Finisar Surveyor Manuel D’Utilisation

11-15

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.

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.