Arris NVG595, Руководство администратора

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For Line 1 and Line 2 :, the two available phone lines, the Call Statistics page displays the following informa-
tion:
Call Statistics - Line 1 and Line 2
Last Call/Cumulative – Incoming/Outgoing
RTP Packet Loss Real-time Transport Protocol packets dropped
RTP Packet Loss percentage Percent of Real-time Transport Protocol packets dropped
Total RTCP Packets Total Real-time Transport Control Protocol packets
Average Inter Arrival Jitter This is calculated continuously in milliseconds as each data packet is received and
averaged.
Max Inter Arrival Jitter This is the maximum value in milliseconds recorded as each data packet is received.
Sum of Inter Arrival Jitter This is calculated continuously in milliseconds as each data packet is received and
totalled.
Sum of Inter Arrival Jitter
Squared This is calculated continuously in milliseconds as each data packet is received and the
total is squared.
Sum of Franc Loss Fraction Lost: The fraction of RTP data packets lost since the previous SR or RR packet
was sent. This fraction is defined to be the number of packets lost divided by the num-
ber of packets expected. This will be calculated on every RTCP SR packet. Sum of the
fraction lost is calculated with all the RTCP packets.
Sum of Franc Loss Squared Fraction lost is squared with every RTCP SR or RR packet. Sum of all this will give the
Sum of Franc Loss Squared.
Max One Way Delay One Way Delay will be calculated in milliseconds on every RTCP SR or RR packet. This
value is (systime - lsr - r) / 2
lsr means last SR timestamp
r means delay since last SR.
Sum of One Way Delay The sum of all the one way delays calculated in milliseconds on every RTCP packet is
displayed as Sum of One Way Delay.
Sum of One Way Delay
Squared One Way Delay is squared with every RTCP SR or RR packet. Sum of all this will give the
Sum of One Way Delay Squared.
Avg Round Trip Time Average time in milliseconds from this local source to destination address and back
again for all logged calls
Max Round Trip Time Maximum amount of time in milliseconds from this local source to destination
address and back again for all logged calls
Sum of Round Trip Time Sum of time in milliseconds from this local source to destination address and back
again for all logged calls
Sum of Round Trip Time
Squared Sum squared of time from this local source to destination address and back again for
all logged calls