NEC UNIVERGE SV9100 Manual page 30

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Note that there are other options available with the Microsoft Windows implementation of ping. The
most commonly used options are listed above.
Examples:
ping 192.168.2.100 -t
ping 192.168.2.100 -n 10 -l 40
ping 192.168.2.100
Pinging from an DT700 or DT800 IP Phone
The IP Phone has a version of ping within the Maintenance Menu.
Enter Maintenance Menu (Press Help key for 2 seconds)
Press 3 (Ping)
Enter the Destination IP Address that you wish to ping. (Use * for .)
Press OK.
If the ping is successful you see OK after each ping. If it fails you will see NG
Press the Exit button to return the phone to normal operation.
An example of ping usage:
A DT700 Phone unsuccessfully attempts to connect to the SV9100 as shown below:
From the diagram above we can see that there are several devices that could cause this connection
problem:
DT700 Phone (192.168.1.100)
Local Hub
Local router (192.168.1.1)
Leased line
Remote Router (192.168.2.1)
Remote Hub
SV9100 VoIPDB (192.168.2.100)
You will see that by pinging from the DT700 Phone and PCs, we can work out where the problem lies
by process of elimination. We start by pinging the nearest device and working outwards towards our
intended destination
Examples:
The DT700 can successfully ping all devices up to and including the local router. Anything beyond
Continually pings 192.168.2.100 until Ctrl-c pressed
Sends ten 40-byte packets to 192.168.2.100
Sends four 32-byte packets (default) to 192.168.2.100