Agilent Technologies N2620A User Manual
Page 119
Voice Testing with the FrameScope Pro
3
N2620A User’s Guide
101
Each iteration shown is based on the RTCP message exchanged
during the VoIP test.
•
The Inter-arrival Jitter, Total Packet Loss, and Packet Loss Ratio
are based on the received RTP packets. Packet Round-trip Delay
is based on the RTCP packet information.
•
R-Factor
and Mean Opinion Score are based on Inter-arrival Jitter,
Total Packet Loss
, Packet Loss Ratio, and Packet Round-trip Delay.
If no RTCP packet is sent, then Packet Round-trip Delay will be
set to zero.
•
Total Packets Sent
reports the number of packets sent from the
FrameScope Pro.
•
Total Packet Lost
is based on RFC 1889/3550 “Cumulative
Number of Packets Lost”.
•
Packet Loss Ratio
is based on RFC 1889/3550 “Fraction Lost”.
•
Total Packets Discarded
refers to the number of packets
dropped at the receiving side if there are errors in the RTP
header information.
•
Packet Discard Ratio
refers to the discarded packet ratio for
each RTCP interval.