Netopia 435 Reference Manual page 201

10-8 Netopia ISDN Router Reference Guide
In the example below, a Netopia ISDN Router is sending Ping
packets to another host, which responds with return Ping packets.
Note that the second return Ping packet is considered to be late
because it is not received by the Netopia ISDN Router before the
third Ping packet is sent. The first and third return Ping packets are
on time.
send Ping packet 1
Netopia
receive return Ping packet 1
Netopia
send Ping packet 2
Netopia
send Ping packet 3
Netopia
receive return Ping packet 2
Netopia
receive return Ping packet 3
Netopia
Packets Lost: The number of packets unaccounted for, shown in
total and as a percentage of total packets sent. This statistic may
be updated during the Ping test, and may not be accurate until after
the test is over. However, if an escalating one-to-one
correspondence is seen between Packets Out and Packets Lost,
and Packets In is noticeably lagging behind Packets Out, the
destination is probably unreachable. In this case, use STOP PING.
Round Trip Time (Min/Max/Avg): Statistics showing the
minimum, maximum, and average number of seconds elapsing
between the time each Ping packet was sent and the time its
corresponding return Ping packet was received.
receive Ping packet 1
send return Ping packet 1
receive Ping packet 2
send return Ping packet 2
receive Ping packet 3
send return Ping packet 3
host
host
host
host
host
host