NEC UNIVERGE SV9100 Manual page 31

that point fails. This would suggest that the Leased Line or remote router has a problem.
The local PC (192.168.1.101) can ping all devices apart from the DT700. DT700 cannot ping
anywhere. This would suggest that there is a problem with the DT700 or its connection to the
switch/hub.
5.3 Packet Traces
It is possible to use a packet trace utility (also known as "Sniffers") to determine what data is being
transmitted and received on an Ethernet network. These can be particularly useful to determine the
cause of connection issues or voice quality issues.
The packet trace utility has to be run on a PC connected to the same hub (not a switched hub) that
the SV9100 or IP Phone is connected to.
There are many utilities available that will allow you to run a packet trace on a network. One such
utility is Wireshark. This is a software application distributed under a GNU general public licence
(see www.wireshark.org). This allows the files to be captured and saved in a standard format for
analysis later. This utility is supplied on the Technical CD.
A sample trace file is shown below.
Part 1: VoIP Reference Manual 31